Merge: new Statistics module

Close #827

* commit '17a26155cdf0150ea9d8cf915311f16fafa6354a':
  - client: convert average processing time to milliseconds
  + client: handle clear statistics
  + client: update time interval notice
  + client: add notice to the time interval input
  + client: functional components for dashboard
  * client: fix missed translations
  * client: change the result message after adding a filter
  + client: handle the new statistics format
  + client: handle time interval for statistics
  + openapi: add /stats_config, /stats_info methods
  * openapi: update /stats method
  + statistics: store in separate file
  * stats: remove old code
  + config: "statistics_interval" setting
  + /control/stats_config, /control/stats_info

AGHTechDoc.md

@@ -37,6 +37,11 @@ Contents:
 * Services Filter
 	* API: Get blocked services list
 	* API: Set blocked services list
+* Statistics
+	* API: Get statistics data
+	* API: Clear statistics data
+	* API: Set statistics parameters
+	* API: Get statistics parameters
 
 
 ## First startup
@@ -863,3 +868,111 @@ Request:
 Response:
 
 	200 OK
+
+
+## Statistics
+
+Load (main thread):
+. Load data from the last bucket from DB for the current hour
+
+Runtime (DNS worker threads):
+. Update current unit
+
+Runtime (goroutine):
+. Periodically check that current unit should be flushed to file (when the current hour changes)
+ . If so, flush it, allocate a new empty unit
+
+Runtime (HTTP worker threads):
+. To respond to "Get statistics" API request we:
+ . load all units from file
+ . load current unit
+ . process data from all loaded units:
+  . sum up data for "total counters" output values
+  . add value into "per time unit counters" output arrays
+  . aggregate data for "top_" output arrays;  sort in descending order
+
+Unload (main thread):
+. Flush current unit to file
+
+
+### API: Get statistics data
+
+Request:
+
+	GET /control/stats
+
+Response:
+
+	200 OK
+
+	{
+		time_units: hours | days
+
+		// total counters:
+		num_dns_queries: 123
+		num_blocked_filtering: 123
+		num_replaced_safebrowsing: 123
+		num_replaced_safesearch: 123
+		num_replaced_parental: 123
+		avg_processing_time: 123.123
+
+		// per time unit counters
+		dns_queries: [123, ...]
+		blocked_filtering: [123, ...]
+		replaced_parental: [123, ...]
+		replaced_safebrowsing: [123, ...]
+
+		top_queried_domains: [
+			{host: 123},
+			...
+		]
+		top_blocked_domains: [
+			{host: 123},
+			...
+		]
+		top_clients: [
+			{IP: 123},
+			...
+		]
+	}
+
+
+### API: Clear statistics data
+
+Request:
+
+	POST /control/stats_reset
+
+Response:
+
+	200 OK
+
+
+### API: Set statistics parameters
+
+Request:
+
+	POST /control/stats_config
+
+	{
+		"interval": 1 | 7 | 30 | 90
+	}
+
+Response:
+
+	200 OK
+
+
+### API: Get statistics parameters
+
+Request:
+
+	GET /control/stats_info
+
+Response:
+
+	200 OK
+
+	{
+		"interval": 1 | 7 | 30 | 90
+	}

client/package.json

@@ -6,7 +6,7 @@
     "build-dev": "NODE_ENV=development ./node_modules/.bin/webpack --config webpack.dev.js",
     "watch": "NODE_ENV=development ./node_modules/.bin/webpack --config webpack.dev.js --watch",
     "build-prod": "NODE_ENV=production ./node_modules/.bin/webpack --config webpack.prod.js",
-    "lint": "eslint frontend/"
+    "lint": "eslint client/"
   },
   "dependencies": {
     "@nivo/line": "^0.49.1",

client/src/__locales/en.json

@@ -4,7 +4,6 @@
     "upstream_parallel": "Use parallel queries to speed up resolving by simultaneously querying all upstream servers",
     "bootstrap_dns": "Bootstrap DNS servers",
     "bootstrap_dns_desc": "Bootstrap DNS servers are used to resolve IP addresses of the DoH/DoT resolvers you specify as upstreams.",
-    "url_added_successfully": "URL added successfully",
     "check_dhcp_servers": "Check for DHCP servers",
     "save_config": "Save config",
     "enabled_dhcp": "DHCP server enabled",
@@ -67,18 +66,22 @@
     "disabled_protection": "Disabled protection",
     "refresh_statics": "Refresh statistics",
     "dns_query": "DNS Queries",
-    "blocked_by": "Blocked by Filters",
+    "blocked_by": "<0>Blocked by Filters</0>",
     "stats_malware_phishing": "Blocked malware/phishing",
     "stats_adult": "Blocked adult websites",
     "stats_query_domain": "Top queried domains",
     "for_last_24_hours": "for the last 24 hours",
+    "for_last_days": "for the last {{count}} day",
+    "for_last_days_plural": "for the last {{count}} days",
     "no_domains_found": "No domains found",
     "requests_count": "Requests count",
     "top_blocked_domains": "Top blocked domains",
     "top_clients": "Top clients",
     "no_clients_found": "No clients found",
     "general_statistics": "General statistics",
-    "number_of_dns_query_24_hours": "A number of DNS quieries processed for the last 24 hours",
+    "number_of_dns_query_days": "A number of DNS queries processed for the last {{count}} day",
+    "number_of_dns_query_days_plural": "A number of DNS queries processed for the last {{count}} days",
+    "number_of_dns_query_24_hours": "A number of DNS queries processed for the last 24 hours",
     "number_of_dns_query_blocked_24_hours": "A number of DNS requests blocked by adblock filters and hosts blocklists",
     "number_of_dns_query_blocked_24_hours_by_sec": "A number of DNS requests blocked by the AdGuard browsing security module",
     "number_of_dns_query_blocked_24_hours_adult": "A number of adult websites blocked",
@@ -300,7 +303,6 @@
     "client_deleted": "Client \"{{key}}\" successfully deleted",
     "client_added": "Client \"{{key}}\" successfully added",
     "client_updated": "Client \"{{key}}\" successfully updated",
-    "table_statistics": "Requests count (last 24 hours)",
     "clients_not_found": "No clients found",
     "client_confirm_delete": "Are you sure you want to delete client \"{{key}}\"?",
     "filter_confirm_delete": "Are you sure you want to delete filter?",
@@ -361,5 +363,19 @@
     "encryption_certificates_source_path": "Set a certificates file path",
     "encryption_certificates_source_content":"Paste the certificates contents",
     "encryption_key_source_path": "Set a private key file",
-    "encryption_key_source_content": "Paste the private key contents"
+    "encryption_key_source_content": "Paste the private key contents",
+    "stats_params": "Statistics configuration",
+    "config_successfully_saved": "Configuration successfully saved",
+    "interval_24_hour": "24 hours",
+    "interval_days": "{{count}} day",
+    "interval_days_plural": "{{count}} days",
+    "domain": "Domain",
+    "answer": "Answer",
+    "filter_added_successfully": "The filter has been successfully added",
+    "statistics_logs": "Statistics and logs",
+    "statistics_retention": "Statistics retention",
+    "statistics_retention_desc": "If you decrease the interval value, some data will be lost",
+    "statistics_clear": " Clear statistics",
+    "statistics_clear_confirm": "Are you sure you want to clear statistics?",
+    "statistics_cleared": "Statistics successfully cleared"
 }

client/src/actions/index.js

@@ -1,11 +1,10 @@
 import { createAction } from 'redux-actions';
-import round from 'lodash/round';
 import { t } from 'i18next';
 import { showLoading, hideLoading } from 'react-redux-loading-bar';
 import axios from 'axios';
 
 import versionCompare from '../helpers/versionCompare';
-import { normalizeHistory, normalizeFilteringStatus, normalizeLogs, normalizeTextarea, sortClients } from '../helpers/helpers';
+import { normalizeFilteringStatus, normalizeLogs, normalizeTextarea, sortClients } from '../helpers/helpers';
 import { SETTINGS_NAMES, CHECK_TIMEOUT } from '../helpers/constants';
 import { getTlsStatus } from './encryption';
 import Api from '../api/Api';
@@ -246,27 +245,6 @@ export const getClients = () => async (dispatch) => {
     }
 };
 
-export const getTopStatsRequest = createAction('GET_TOP_STATS_REQUEST');
-export const getTopStatsFailure = createAction('GET_TOP_STATS_FAILURE');
-export const getTopStatsSuccess = createAction('GET_TOP_STATS_SUCCESS');
-
-export const getTopStats = () => async (dispatch, getState) => {
-    dispatch(getTopStatsRequest());
-    const timer = setInterval(async () => {
-        const state = getState();
-        if (state.dashboard.isCoreRunning) {
-            clearInterval(timer);
-            try {
-                const stats = await apiClient.getGlobalStatsTop();
-                dispatch(getTopStatsSuccess(stats));
-            } catch (error) {
-                dispatch(addErrorToast({ error }));
-                dispatch(getTopStatsFailure(error));
-            }
-        }
-    }, 100);
-};
-
 export const dnsStatusRequest = createAction('DNS_STATUS_REQUEST');
 export const dnsStatusFailure = createAction('DNS_STATUS_FAILURE');
 export const dnsStatusSuccess = createAction('DNS_STATUS_SUCCESS');
@@ -314,27 +292,6 @@ export const disableDns = () => async (dispatch) => {
     }
 };
 
-export const getStatsRequest = createAction('GET_STATS_REQUEST');
-export const getStatsFailure = createAction('GET_STATS_FAILURE');
-export const getStatsSuccess = createAction('GET_STATS_SUCCESS');
-
-export const getStats = () => async (dispatch) => {
-    dispatch(getStatsRequest());
-    try {
-        const stats = await apiClient.getGlobalStats();
-
-        const processedStats = {
-            ...stats,
-            avg_processing_time: round(stats.avg_processing_time, 2),
-        };
-
-        dispatch(getStatsSuccess(processedStats));
-    } catch (error) {
-        dispatch(addErrorToast({ error }));
-        dispatch(getStatsFailure());
-    }
-};
-
 export const getLogsRequest = createAction('GET_LOGS_REQUEST');
 export const getLogsFailure = createAction('GET_LOGS_FAILURE');
 export const getLogsSuccess = createAction('GET_LOGS_SUCCESS');
@@ -473,22 +430,6 @@ export const refreshFilters = () => async (dispatch) => {
 
 export const handleRulesChange = createAction('HANDLE_RULES_CHANGE');
 
-export const getStatsHistoryRequest = createAction('GET_STATS_HISTORY_REQUEST');
-export const getStatsHistoryFailure = createAction('GET_STATS_HISTORY_FAILURE');
-export const getStatsHistorySuccess = createAction('GET_STATS_HISTORY_SUCCESS');
-
-export const getStatsHistory = () => async (dispatch) => {
-    dispatch(getStatsHistoryRequest());
-    try {
-        const statsHistory = await apiClient.getGlobalStatsHistory();
-        const normalizedHistory = normalizeHistory(statsHistory);
-        dispatch(getStatsHistorySuccess(normalizedHistory));
-    } catch (error) {
-        dispatch(addErrorToast({ error }));
-        dispatch(getStatsHistoryFailure());
-    }
-};
-
 export const addFilterRequest = createAction('ADD_FILTER_REQUEST');
 export const addFilterFailure = createAction('ADD_FILTER_FAILURE');
 export const addFilterSuccess = createAction('ADD_FILTER_SUCCESS');

client/src/actions/stats.js

@@ -0,0 +1,78 @@
+import { createAction } from 'redux-actions';
+
+import Api from '../api/Api';
+import { addErrorToast, addSuccessToast } from './index';
+import { normalizeTopStats, secondsToMilliseconds } from '../helpers/helpers';
+
+const apiClient = new Api();
+
+export const getStatsConfigRequest = createAction('GET_LOGS_CONFIG_REQUEST');
+export const getStatsConfigFailure = createAction('GET_LOGS_CONFIG_FAILURE');
+export const getStatsConfigSuccess = createAction('GET_LOGS_CONFIG_SUCCESS');
+
+export const getStatsConfig = () => async (dispatch) => {
+    dispatch(getStatsConfigRequest());
+    try {
+        const data = await apiClient.getStatsInfo();
+        dispatch(getStatsConfigSuccess(data));
+    } catch (error) {
+        dispatch(addErrorToast({ error }));
+        dispatch(getStatsConfigFailure());
+    }
+};
+
+export const setStatsConfigRequest = createAction('SET_STATS_CONFIG_REQUEST');
+export const setStatsConfigFailure = createAction('SET_STATS_CONFIG_FAILURE');
+export const setStatsConfigSuccess = createAction('SET_STATS_CONFIG_SUCCESS');
+
+export const setStatsConfig = config => async (dispatch) => {
+    dispatch(setStatsConfigRequest());
+    try {
+        await apiClient.setStatsConfig(config);
+        dispatch(addSuccessToast('config_successfully_saved'));
+        dispatch(setStatsConfigSuccess(config));
+    } catch (error) {
+        dispatch(addErrorToast({ error }));
+        dispatch(setStatsConfigFailure());
+    }
+};
+
+export const getStatsRequest = createAction('GET_STATS_REQUEST');
+export const getStatsFailure = createAction('GET_STATS_FAILURE');
+export const getStatsSuccess = createAction('GET_STATS_SUCCESS');
+
+export const getStats = () => async (dispatch) => {
+    dispatch(getStatsRequest());
+    try {
+        const stats = await apiClient.getStats();
+
+        const normalizedStats = {
+            ...stats,
+            top_blocked_domains: normalizeTopStats(stats.top_blocked_domains),
+            top_clients: normalizeTopStats(stats.top_clients),
+            top_queried_domains: normalizeTopStats(stats.top_queried_domains),
+            avg_processing_time: secondsToMilliseconds(stats.avg_processing_time),
+        };
+
+        dispatch(getStatsSuccess(normalizedStats));
+    } catch (error) {
+        dispatch(addErrorToast({ error }));
+        dispatch(getStatsFailure());
+    }
+};
+
+export const resetStatsRequest = createAction('RESET_STATS_REQUEST');
+export const resetStatsFailure = createAction('RESET_STATS_FAILURE');
+export const resetStatsSuccess = createAction('RESET_STATS_SUCCESS');
+
+export const resetStats = () => async (dispatch) => {
+    dispatch(getStatsRequest());
+    try {
+        await apiClient.resetStats();
+        dispatch(addSuccessToast('statistics_cleared'));
+        dispatch(resetStatsSuccess());
+    } catch (error) {
+        dispatch(addErrorToast({ error }));
+        dispatch(resetStatsFailure());
+    }
+};

client/src/api/Api.js

@@ -1,6 +1,4 @@
 import axios from 'axios';
-import subHours from 'date-fns/sub_hours';
-import dateFormat from 'date-fns/format';
 
 export default class Api {
     baseUrl = 'control';
@@ -24,13 +22,9 @@ export default class Api {
     }
 
     // Global methods
-    GLOBAL_RESTART = { path: 'restart', method: 'POST' };
     GLOBAL_START = { path: 'start', method: 'POST' };
-    GLOBAL_STATS = { path: 'stats', method: 'GET' };
-    GLOBAL_STATS_HISTORY = { path: 'stats_history', method: 'GET' };
     GLOBAL_STATUS = { path: 'status', method: 'GET' };
     GLOBAL_STOP = { path: 'stop', method: 'POST' };
-    GLOBAL_STATS_TOP = { path: 'stats_top', method: 'GET' };
     GLOBAL_QUERY_LOG = { path: 'querylog', method: 'GET' };
     GLOBAL_QUERY_LOG_ENABLE = { path: 'querylog_enable', method: 'POST' };
     GLOBAL_QUERY_LOG_DISABLE = { path: 'querylog_disable', method: 'POST' };
@@ -41,11 +35,6 @@ export default class Api {
     GLOBAL_DISABLE_PROTECTION = { path: 'disable_protection', method: 'POST' };
     GLOBAL_UPDATE = { path: 'update', method: 'POST' };
 
-    restartGlobalFiltering() {
-        const { path, method } = this.GLOBAL_RESTART;
-        return this.makeRequest(path, method);
-    }
-
     startGlobalFiltering() {
         const { path, method } = this.GLOBAL_START;
         return this.makeRequest(path, method);
@@ -56,36 +45,11 @@ export default class Api {
         return this.makeRequest(path, method);
     }
 
-    getGlobalStats() {
-        const { path, method } = this.GLOBAL_STATS;
-        return this.makeRequest(path, method);
-    }
-
-    getGlobalStatsHistory() {
-        const { path, method } = this.GLOBAL_STATS_HISTORY;
-        const format = 'YYYY-MM-DDTHH:mm:ssZ';
-        const dateNow = Date.now();
-
-        const config = {
-            params: {
-                start_time: dateFormat(subHours(dateNow, 24), format),
-                end_time: dateFormat(dateNow, format),
-                time_unit: 'hours',
-            },
-        };
-        return this.makeRequest(path, method, config);
-    }
-
     getGlobalStatus() {
         const { path, method } = this.GLOBAL_STATUS;
         return this.makeRequest(path, method);
     }
 
-    getGlobalStatsTop() {
-        const { path, method } = this.GLOBAL_STATS_TOP;
-        return this.makeRequest(path, method);
-    }
-
     getQueryLog() {
         const { path, method } = this.GLOBAL_QUERY_LOG;
         return this.makeRequest(path, method);
@@ -527,4 +491,34 @@ export default class Api {
         };
         return this.makeRequest(path, method, parameters);
     }
+
+    // Settings for statistics
+    GET_STATS = { path: 'stats', method: 'GET' };
+    STATS_INFO = { path: 'stats_info', method: 'GET' };
+    STATS_CONFIG = { path: 'stats_config', method: 'POST' };
+    STATS_RESET = { path: 'stats_reset', method: 'POST' };
+
+    getStats() {
+        const { path, method } = this.GET_STATS;
+        return this.makeRequest(path, method);
+    }
+
+    getStatsInfo() {
+        const { path, method } = this.STATS_INFO;
+        return this.makeRequest(path, method);
+    }
+
+    setStatsConfig(data) {
+        const { path, method } = this.STATS_CONFIG;
+        const config = {
+            data,
+            headers: { 'Content-Type': 'application/json' },
+        };
+        return this.makeRequest(path, method, config);
+    }
+
+    resetStats() {
+        const { path, method } = this.STATS_RESET;
+        return this.makeRequest(path, method);
+    }
 }

client/src/components/Dashboard/BlockedDomains.js

@@ -1,62 +1,59 @@
-import React, { Component } from 'react';
+import React from 'react';
 import ReactTable from 'react-table';
 import PropTypes from 'prop-types';
-import map from 'lodash/map';
 import { withNamespaces, Trans } from 'react-i18next';
 
 import Card from '../ui/Card';
 import Cell from '../ui/Cell';
-import Popover from '../ui/Popover';
+import DomainCell from './DomainCell';
 
-import { getTrackerData } from '../../helpers/trackers/trackers';
 import { getPercent } from '../../helpers/helpers';
 import { STATUS_COLORS } from '../../helpers/constants';
 
-class BlockedDomains extends Component {
+const CountCell = totalBlocked =>
-    columns = [{
+    function cell(row) {
-        Header: 'IP',
-        accessor: 'ip',
-        Cell: (row) => {
         const { value } = row;
-            const trackerData = getTrackerData(value);
+        const percent = getPercent(totalBlocked, value);
 
-            return (
+        return <Cell value={value} percent={percent} color={STATUS_COLORS.red} />;
-                <div className="logs__row">
+    };
-                    <div className="logs__text" title={value}>
+
-                        {value}
+const BlockedDomains = ({
-                    </div>
+    t,
-                    {trackerData && <Popover data={trackerData} />}
+    refreshButton,
-                </div>
+    topBlockedDomains,
-            );
+    subtitle,
-        },
-    }, {
-        Header: <Trans>requests_count</Trans>,
-        accessor: 'domain',
-        maxWidth: 190,
-        Cell: ({ value }) => {
-            const {
     blockedFiltering,
     replacedSafebrowsing,
     replacedParental,
-            } = this.props;
+}) => {
-            const blocked = blockedFiltering + replacedSafebrowsing + replacedParental;
+    const totalBlocked = blockedFiltering + replacedSafebrowsing + replacedParental;
-            const percent = getPercent(blocked, value);
 
     return (
-                <Cell value={value} percent={percent} color={STATUS_COLORS.red} />
+        <Card
-            );
+            title={t('top_blocked_domains')}
-        },
+            subtitle={subtitle}
-    }];
+            bodyType="card-table"
-
+            refresh={refreshButton}
-    render() {
+        >
-        const { t } = this.props;
-        return (
-            <Card title={ t('top_blocked_domains') } subtitle={ t('for_last_24_hours') } bodyType="card-table" refresh={this.props.refreshButton}>
             <ReactTable
-                    data={map(this.props.topBlockedDomains, (value, prop) => (
+                data={topBlockedDomains.map(({ name: domain, count }) => ({
-                        { ip: prop, domain: value }
+                    domain,
-                    ))}
+                    count,
-                    columns={this.columns}
+                }))}
+                columns={[
+                    {
+                        Header: <Trans>domain</Trans>,
+                        accessor: 'domain',
+                        Cell: DomainCell,
+                    },
+                    {
+                        Header: <Trans>requests_count</Trans>,
+                        accessor: 'count',
+                        maxWidth: 190,
+                        Cell: CountCell(totalBlocked),
+                    },
+                ]}
                 showPagination={false}
                 noDataText={t('no_domains_found')}
                 minRows={6}
@@ -64,16 +61,16 @@ class BlockedDomains extends Component {
             />
         </Card>
     );
-    }
+};
-}
 
 BlockedDomains.propTypes = {
-    topBlockedDomains: PropTypes.object.isRequired,
+    topBlockedDomains: PropTypes.array.isRequired,
     blockedFiltering: PropTypes.number.isRequired,
     replacedSafebrowsing: PropTypes.number.isRequired,
     replacedParental: PropTypes.number.isRequired,
     refreshButton: PropTypes.node.isRequired,
-    t: PropTypes.func,
+    subtitle: PropTypes.string.isRequired,
+    t: PropTypes.func.isRequired,
 };
 
 export default withNamespaces()(BlockedDomains);

client/src/components/Dashboard/Clients.js

@@ -1,7 +1,6 @@
-import React, { Component } from 'react';
+import React from 'react';
 import ReactTable from 'react-table';
 import PropTypes from 'prop-types';
-import map from 'lodash/map';
 import { Trans, withNamespaces } from 'react-i18next';
 
 import Card from '../ui/Card';
@@ -10,26 +9,27 @@ import Cell from '../ui/Cell';
 import { getPercent, getClientName } from '../../helpers/helpers';
 import { STATUS_COLORS } from '../../helpers/constants';
 
-class Clients extends Component {
+const getClientsPercentColor = (percent) => {
-    getPercentColor = (percent) => {
     if (percent > 50) {
         return STATUS_COLORS.green;
     } else if (percent > 10) {
         return STATUS_COLORS.yellow;
     }
     return STATUS_COLORS.red;
-    }
+};
 
-    columns = [{
+const ipCell = (clients, autoClients) =>
-        Header: 'IP',
+    function cell(row) {
-        accessor: 'ip',
-        Cell: ({ value }) => {
-            const clientName = getClientName(this.props.clients, value)
-                || getClientName(this.props.autoClients, value);
         let client;
+        const { value } = row;
+        const clientName = getClientName(clients, value) || getClientName(autoClients, value);
 
         if (clientName) {
-                client = <span>{clientName} <small>({value})</small></span>;
+            client = (
+                <span>
+                    {clientName} <small>({value})</small>
+                </span>
+            );
         } else {
             client = value;
         }
@@ -41,30 +41,45 @@ class Clients extends Component {
                 </span>
             </div>
         );
+    };
+
+const countCell = dnsQueries =>
+    function cell(row) {
+        const { value } = row;
+        const percent = getPercent(dnsQueries, value);
+        const percentColor = getClientsPercentColor(percent);
+
+        return <Cell value={value} percent={percent} color={percentColor} />;
+    };
+
+const Clients = ({
+    t, refreshButton, topClients, subtitle, clients, autoClients, dnsQueries,
+}) => (
+    <Card
+        title={t('top_clients')}
+        subtitle={subtitle}
+        bodyType="card-table"
+        refresh={refreshButton}
+    >
+        <ReactTable
+            data={topClients.map(({ name: ip, count }) => ({
+                ip,
+                count,
+            }))}
+            columns={[
+                {
+                    Header: 'IP',
+                    accessor: 'ip',
+                    sortMethod: (a, b) =>
+                        parseInt(a.replace(/\./g, ''), 10) - parseInt(b.replace(/\./g, ''), 10),
+                    Cell: ipCell(clients, autoClients),
                 },
-        sortMethod: (a, b) => parseInt(a.replace(/\./g, ''), 10) - parseInt(b.replace(/\./g, ''), 10),
+                {
-    }, {
                     Header: <Trans>requests_count</Trans>,
                     accessor: 'count',
-        Cell: ({ value }) => {
+                    Cell: countCell(dnsQueries),
-            const percent = getPercent(this.props.dnsQueries, value);
-            const percentColor = this.getPercentColor(percent);
-
-            return (
-                <Cell value={value} percent={percent} color={percentColor} />
-            );
                 },
-    }];
+            ]}
-
-    render() {
-        const { t } = this.props;
-        return (
-            <Card title={ t('top_clients') } subtitle={ t('for_last_24_hours') } bodyType="card-table" refresh={this.props.refreshButton}>
-                <ReactTable
-                    data={map(this.props.topClients, (value, prop) => (
-                        { ip: prop, count: value }
-                    ))}
-                    columns={this.columns}
             showPagination={false}
             noDataText={t('no_clients_found')}
             minRows={6}
@@ -72,16 +87,15 @@ class Clients extends Component {
         />
     </Card>
 );
-    }
-}
 
 Clients.propTypes = {
-    topClients: PropTypes.object.isRequired,
+    topClients: PropTypes.array.isRequired,
     dnsQueries: PropTypes.number.isRequired,
     refreshButton: PropTypes.node.isRequired,
     clients: PropTypes.array.isRequired,
     autoClients: PropTypes.array.isRequired,
-    t: PropTypes.func,
+    subtitle: PropTypes.string.isRequired,
+    t: PropTypes.func.isRequired,
 };
 
 export default withNamespaces()(Clients);

client/src/components/Dashboard/Counters.js

@@ -1,81 +1,108 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import { Trans, withNamespaces } from 'react-i18next';
+import round from 'lodash/round';
 
 import Card from '../ui/Card';
 import Tooltip from '../ui/Tooltip';
 
 const tooltipType = 'tooltip-custom--narrow';
 
-const Counters = props => (
+const Counters = (props) => {
-    <Card title={ props.t('general_statistics') } subtitle={ props.t('for_last_24_hours') } bodyType="card-table" refresh={props.refreshButton}>
+    const {
+        t,
+        interval,
+        refreshButton,
+        subtitle,
+        dnsQueries,
+        blockedFiltering,
+        replacedSafebrowsing,
+        replacedParental,
+        replacedSafesearch,
+        avgProcessingTime,
+    } = props;
+
+    const tooltipTitle =
+        interval === 1
+            ? t('number_of_dns_query_24_hours')
+            : t('number_of_dns_query_days', { count: interval });
+
+    return (
+        <Card
+            title={t('general_statistics')}
+            subtitle={subtitle}
+            bodyType="card-table"
+            refresh={refreshButton}
+        >
             <table className="table card-table">
                 <tbody>
                     <tr>
                         <td>
                             <Trans>dns_query</Trans>
-                        <Tooltip text={ props.t('number_of_dns_query_24_hours') } type={tooltipType} />
+                            <Tooltip text={tooltipTitle} type={tooltipType} />
                         </td>
                         <td className="text-right">
-                        <span className="text-muted">
+                            <span className="text-muted">{dnsQueries}</span>
-                            {props.dnsQueries}
-                        </span>
                         </td>
                     </tr>
                     <tr>
                         <td>
-                        <a href="#filters">
+                            <Trans components={[<a href="#filters" key="0">link</a>]}>
-                            <Trans>blocked_by</Trans>
+                                blocked_by
-                        </a>
+                            </Trans>
-                        <Tooltip text={ props.t('number_of_dns_query_blocked_24_hours') } type={tooltipType} />
+                            <Tooltip
+                                text={t('number_of_dns_query_blocked_24_hours')}
+                                type={tooltipType}
+                            />
                         </td>
                         <td className="text-right">
-                        <span className="text-muted">
+                            <span className="text-muted">{blockedFiltering}</span>
-                            {props.blockedFiltering}
-                        </span>
                         </td>
                     </tr>
                     <tr>
                         <td>
                             <Trans>stats_malware_phishing</Trans>
-                        <Tooltip text={ props.t('number_of_dns_query_blocked_24_hours_by_sec') } type={tooltipType} />
+                            <Tooltip
+                                text={t('number_of_dns_query_blocked_24_hours_by_sec')}
+                                type={tooltipType}
+                            />
                         </td>
                         <td className="text-right">
-                        <span className="text-muted">
+                            <span className="text-muted">{replacedSafebrowsing}</span>
-                            {props.replacedSafebrowsing}
-                        </span>
                         </td>
                     </tr>
                     <tr>
                         <td>
                             <Trans>stats_adult</Trans>
-                        <Tooltip text={ props.t('number_of_dns_query_blocked_24_hours_adult') } type={tooltipType} />
+                            <Tooltip
+                                text={t('number_of_dns_query_blocked_24_hours_adult')}
+                                type={tooltipType}
+                            />
                         </td>
                         <td className="text-right">
-                        <span className="text-muted">
+                            <span className="text-muted">{replacedParental}</span>
-                            {props.replacedParental}
-                        </span>
                         </td>
                     </tr>
                     <tr>
                         <td>
                             <Trans>enforced_save_search</Trans>
-                        <Tooltip text={ props.t('number_of_dns_query_to_safe_search') } type={tooltipType} />
+                            <Tooltip
+                                text={t('number_of_dns_query_to_safe_search')}
+                                type={tooltipType}
+                            />
                         </td>
                         <td className="text-right">
-                        <span className="text-muted">
+                            <span className="text-muted">{replacedSafesearch}</span>
-                            {props.replacedSafesearch}
-                        </span>
                         </td>
                     </tr>
                     <tr>
                         <td>
                             <Trans>average_processing_time</Trans>
-                        <Tooltip text={ props.t('average_processing_time_hint') } type={tooltipType} />
+                            <Tooltip text={t('average_processing_time_hint')} type={tooltipType} />
                         </td>
                         <td className="text-right">
                             <span className="text-muted">
-                            {props.avgProcessingTime}
+                                {avgProcessingTime ? `${round(avgProcessingTime)} ms` : 0}
                             </span>
                         </td>
                     </tr>
@@ -83,6 +110,7 @@ const Counters = props => (
             </table>
         </Card>
     );
+};
 
 Counters.propTypes = {
     dnsQueries: PropTypes.number.isRequired,
@@ -92,6 +120,8 @@ Counters.propTypes = {
     replacedSafesearch: PropTypes.number.isRequired,
     avgProcessingTime: PropTypes.number.isRequired,
     refreshButton: PropTypes.node.isRequired,
+    subtitle: PropTypes.string.isRequired,
+    interval: PropTypes.number.isRequired,
     t: PropTypes.func.isRequired,
 };
 

client/src/components/Dashboard/Dashboard.css

@@ -20,3 +20,8 @@
     border-top: 6px solid transparent;
     border-bottom: 6px solid #585965;
 }
+
+.card-chart-bg {
+    left: -20px;
+    width: calc(100% + 20px);
+}

client/src/components/Dashboard/DomainCell.js

@@ -0,0 +1,24 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+import { getTrackerData } from '../../helpers/trackers/trackers';
+import Popover from '../ui/Popover';
+
+const DomainCell = ({ value }) => {
+    const trackerData = getTrackerData(value);
+
+    return (
+        <div className="logs__row">
+            <div className="logs__text" title={value}>
+                {value}
+            </div>
+            {trackerData && <Popover data={trackerData} />}
+        </div>
+    );
+};
+
+DomainCell.propTypes = {
+    value: PropTypes.string.isRequired,
+};
+
+export default DomainCell;

client/src/components/Dashboard/QueriedDomains.js

@@ -1,66 +1,60 @@
-import React, { Component } from 'react';
+import React from 'react';
 import ReactTable from 'react-table';
 import PropTypes from 'prop-types';
-import map from 'lodash/map';
 import { withNamespaces, Trans } from 'react-i18next';
 
 import Card from '../ui/Card';
 import Cell from '../ui/Cell';
-import Popover from '../ui/Popover';
+import DomainCell from './DomainCell';
 
-import { getTrackerData } from '../../helpers/trackers/trackers';
-import { getPercent } from '../../helpers/helpers';
 import { STATUS_COLORS } from '../../helpers/constants';
+import { getPercent } from '../../helpers/helpers';
 
-class QueriedDomains extends Component {
+const getQueriedPercentColor = (percent) => {
-    getPercentColor = (percent) => {
     if (percent > 10) {
         return STATUS_COLORS.red;
     } else if (percent > 5) {
         return STATUS_COLORS.yellow;
     }
     return STATUS_COLORS.green;
-    }
+};
 
-    columns = [{
+const countCell = dnsQueries =>
-        Header: 'IP',
+    function cell(row) {
-        accessor: 'ip',
-        Cell: (row) => {
         const { value } = row;
-            const trackerData = getTrackerData(value);
+        const percent = getPercent(dnsQueries, value);
+        const percentColor = getQueriedPercentColor(percent);
 
-            return (
+        return <Cell value={value} percent={percent} color={percentColor} />;
-                <div className="logs__row">
+    };
-                    <div className="logs__text" title={value}>
+
-                        {value}
+const QueriedDomains = ({
-                    </div>
+    t, refreshButton, topQueriedDomains, subtitle, dnsQueries,
-                    {trackerData && <Popover data={trackerData} />}
+}) => (
-                </div>
+    <Card
-            );
+        title={t('stats_query_domain')}
+        subtitle={subtitle}
+        bodyType="card-table"
+        refresh={refreshButton}
+    >
+        <ReactTable
+            data={topQueriedDomains.map(({ name: domain, count }) => ({
+                domain,
+                count,
+            }))}
+            columns={[
+                {
+                    Header: <Trans>domain</Trans>,
+                    accessor: 'domain',
+                    Cell: DomainCell,
                 },
-    }, {
+                {
                     Header: <Trans>requests_count</Trans>,
                     accessor: 'count',
                     maxWidth: 190,
-        Cell: ({ value }) => {
+                    Cell: countCell(dnsQueries),
-            const percent = getPercent(this.props.dnsQueries, value);
-            const percentColor = this.getPercentColor(percent);
-
-            return (
-                <Cell value={value} percent={percent} color={percentColor} />
-            );
                 },
-    }];
+            ]}
-
-    render() {
-        const { t } = this.props;
-        return (
-            <Card title={ t('stats_query_domain') } subtitle={ t('for_last_24_hours') } bodyType="card-table" refresh={this.props.refreshButton}>
-                <ReactTable
-                    data={map(this.props.topQueriedDomains, (value, prop) => (
-                        { ip: prop, count: value }
-                    ))}
-                    columns={this.columns}
             showPagination={false}
             noDataText={t('no_domains_found')}
             minRows={6}
@@ -68,14 +62,13 @@ class QueriedDomains extends Component {
         />
     </Card>
 );
-    }
-}
 
 QueriedDomains.propTypes = {
-    topQueriedDomains: PropTypes.object.isRequired,
+    topQueriedDomains: PropTypes.array.isRequired,
     dnsQueries: PropTypes.number.isRequired,
     refreshButton: PropTypes.node.isRequired,
-    t: PropTypes.func,
+    subtitle: PropTypes.string.isRequired,
+    t: PropTypes.func.isRequired,
 };
 
 export default withNamespaces()(QueriedDomains);

client/src/components/Dashboard/Statistics.js

@@ -1,111 +1,78 @@
-import React, { Component } from 'react';
+import React from 'react';
 import PropTypes from 'prop-types';
-import { Trans, withNamespaces } from 'react-i18next';
+import { withNamespaces, Trans } from 'react-i18next';
 
-import Card from '../ui/Card';
+import StatsCard from './StatsCard';
-import Line from '../ui/Line';
+import { getPercent, normalizeHistory } from '../../helpers/helpers';
 
-import { getPercent } from '../../helpers/helpers';
+const getNormalizedHistory = (data, interval, id) => [
-import { STATUS_COLORS } from '../../helpers/constants';
+    { data: normalizeHistory(data, interval), id },
+];
 
-class Statistics extends Component {
+const Statistics = ({
-    render() {
+    interval,
-        const {
     dnsQueries,
     blockedFiltering,
     replacedSafebrowsing,
     replacedParental,
-        } = this.props;
+    numDnsQueries,
-
+    numBlockedFiltering,
-        const filteringData = [this.props.history[1]];
+    numReplacedSafebrowsing,
-        const queriesData = [this.props.history[2]];
+    numReplacedParental,
-        const parentalData = [this.props.history[3]];
+}) => (
-        const safebrowsingData = [this.props.history[4]];
-
-        return (
     <div className="row">
         <div className="col-sm-6 col-lg-3">
-                    <Card type="card--full" bodyType="card-wrap">
+            <StatsCard
-                        <div className="card-body-stats">
+                total={numDnsQueries}
-                            <div className="card-value card-value-stats text-blue">
+                lineData={getNormalizedHistory(dnsQueries, interval, 'dnsQuery')}
-                                {dnsQueries}
+                title={<Trans>dns_query</Trans>}
-                            </div>
+                color="blue"
-                            <div className="card-title-stats">
+            />
-                                <Trans>dns_query</Trans>
-                            </div>
-                        </div>
-                        <div className="card-chart-bg">
-                            <Line data={queriesData} color={STATUS_COLORS.blue}/>
-                        </div>
-                    </Card>
         </div>
         <div className="col-sm-6 col-lg-3">
-                    <Card type="card--full" bodyType="card-wrap">
+            <StatsCard
-                        <div className="card-body-stats">
+                total={numBlockedFiltering}
-                            <div className="card-value card-value-stats text-red">
+                lineData={getNormalizedHistory(blockedFiltering, interval, 'blockedFiltering')}
-                                {blockedFiltering}
+                percent={getPercent(numDnsQueries, numBlockedFiltering)}
-                            </div>
+                title={<Trans components={[<a href="#filters" key="0">link</a>]}>blocked_by</Trans>}
-                            <div className="card-value card-value-percent text-red">
+                color="red"
-                                {getPercent(dnsQueries, blockedFiltering)}
+            />
-                            </div>
-                            <div className="card-title-stats">
-                                <a href="#filters">
-                                    <Trans>blocked_by</Trans>
-                                </a>
-                            </div>
-                        </div>
-                        <div className="card-chart-bg">
-                            <Line data={filteringData} color={STATUS_COLORS.red}/>
-                        </div>
-                    </Card>
         </div>
         <div className="col-sm-6 col-lg-3">
-                    <Card type="card--full" bodyType="card-wrap">
+            <StatsCard
-                        <div className="card-body-stats">
+                total={numReplacedSafebrowsing}
-                            <div className="card-value card-value-stats text-green">
+                lineData={getNormalizedHistory(
-                                {replacedSafebrowsing}
+                    replacedSafebrowsing,
-                            </div>
+                    interval,
-                            <div className="card-value card-value-percent text-green">
+                    'replacedSafebrowsing',
-                                {getPercent(dnsQueries, replacedSafebrowsing)}
+                )}
-                            </div>
+                percent={getPercent(numDnsQueries, numReplacedSafebrowsing)}
-                            <div className="card-title-stats">
+                title={<Trans>stats_malware_phishing</Trans>}
-                                <Trans>stats_malware_phishing</Trans>
+                color="green"
-                            </div>
+            />
-                        </div>
-                        <div className="card-chart-bg">
-                            <Line data={safebrowsingData} color={STATUS_COLORS.green}/>
-                        </div>
-                    </Card>
         </div>
         <div className="col-sm-6 col-lg-3">
-                    <Card type="card--full" bodyType="card-wrap">
+            <StatsCard
-                        <div className="card-body-stats">
+                total={numReplacedParental}
-                            <div className="card-value card-value-stats text-yellow">
+                lineData={getNormalizedHistory(replacedParental, interval, 'replacedParental')}
-                                {replacedParental}
+                percent={getPercent(numDnsQueries, numReplacedParental)}
-                            </div>
+                title={<Trans>stats_adult</Trans>}
-                            <div className="card-value card-value-percent text-yellow">
+                color="yellow"
-                                {getPercent(dnsQueries, replacedParental)}
+            />
-                            </div>
-                            <div className="card-title-stats">
-                                <Trans>stats_adult</Trans>
-                            </div>
-                        </div>
-                        <div className="card-chart-bg">
-                            <Line data={parentalData} color={STATUS_COLORS.yellow}/>
-                        </div>
-                    </Card>
         </div>
     </div>
 );
-    }
-}
 
 Statistics.propTypes = {
-    history: PropTypes.array.isRequired,
+    interval: PropTypes.number.isRequired,
-    dnsQueries: PropTypes.number.isRequired,
+    dnsQueries: PropTypes.array.isRequired,
-    blockedFiltering: PropTypes.number.isRequired,
+    blockedFiltering: PropTypes.array.isRequired,
-    replacedSafebrowsing: PropTypes.number.isRequired,
+    replacedSafebrowsing: PropTypes.array.isRequired,
-    replacedParental: PropTypes.number.isRequired,
+    replacedParental: PropTypes.array.isRequired,
+    numDnsQueries: PropTypes.number.isRequired,
+    numBlockedFiltering: PropTypes.number.isRequired,
+    numReplacedSafebrowsing: PropTypes.number.isRequired,
+    numReplacedParental: PropTypes.number.isRequired,
     refreshButton: PropTypes.node.isRequired,
 };
 

client/src/components/Dashboard/StatsCard.js

@@ -0,0 +1,31 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+import { STATUS_COLORS } from '../../helpers/constants';
+import Card from '../ui/Card';
+import Line from '../ui/Line';
+
+const StatsCard = ({
+    total, lineData, percent, title, color,
+}) => (
+    <Card type="card--full" bodyType="card-wrap">
+        <div className="card-body-stats">
+            <div className={`card-value card-value-stats text-${color}`}>{total}</div>
+            <div className="card-title-stats">{title}</div>
+        </div>
+        {percent >= 0 && (<div className={`card-value card-value-percent text-${color}`}>{percent}</div>)}
+        <div className="card-chart-bg">
+            <Line data={lineData} color={STATUS_COLORS[color]} />
+        </div>
+    </Card>
+);
+
+StatsCard.propTypes = {
+    total: PropTypes.number.isRequired,
+    lineData: PropTypes.array.isRequired,
+    title: PropTypes.object.isRequired,
+    color: PropTypes.string.isRequired,
+    percent: PropTypes.number,
+};
+
+export default StatsCard;

client/src/components/Dashboard/index.js

@@ -19,10 +19,9 @@ class Dashboard extends Component {
 
     getAllStats = () => {
         this.props.getStats();
-        this.props.getStatsHistory();
+        this.props.getStatsConfig();
-        this.props.getTopStats();
         this.props.getClients();
-    }
+    };
 
     getToggleFilteringButton = () => {
         const { protectionEnabled, processingProtection } = this.props.dashboard;
@@ -39,16 +38,20 @@ class Dashboard extends Component {
                 <Trans>{buttonText}</Trans>
             </button>
         );
-    }
+    };
 
     render() {
-        const { dashboard, t } = this.props;
+        const { dashboard, stats, t } = this.props;
         const dashboardProcessing =
             dashboard.processing ||
-            dashboard.processingStats ||
-            dashboard.processingStatsHistory ||
             dashboard.processingClients ||
-            dashboard.processingTopStats;
+            stats.processingStats ||
+            stats.processingGetConfig;
+
+        const subtitle =
+            stats.interval === 1
+                ? t('for_last_24_hours')
+                : t('for_last_days', { count: stats.interval });
 
         const refreshFullButton = (
             <button
@@ -59,6 +62,7 @@ class Dashboard extends Component {
                 <Trans>refresh_statics</Trans>
             </button>
         );
+
         const refreshButton = (
             <button
                 type="button"
@@ -80,80 +84,78 @@ class Dashboard extends Component {
                     </div>
                 </PageTitle>
                 {dashboardProcessing && <Loading />}
-                {!dashboardProcessing &&
+                {!dashboardProcessing && (
                     <div className="row row-cards">
-                        {dashboard.statsHistory &&
                         <div className="col-lg-12">
                             <Statistics
-                                    history={dashboard.statsHistory}
+                                interval={stats.interval}
+                                dnsQueries={stats.dnsQueries}
+                                blockedFiltering={stats.blockedFiltering}
+                                replacedSafebrowsing={stats.replacedSafebrowsing}
+                                replacedParental={stats.replacedParental}
+                                numDnsQueries={stats.numDnsQueries}
+                                numBlockedFiltering={stats.numBlockedFiltering}
+                                numReplacedSafebrowsing={stats.numReplacedSafebrowsing}
+                                numReplacedParental={stats.numReplacedParental}
                                 refreshButton={refreshButton}
-                                    dnsQueries={dashboard.stats.dns_queries}
-                                    blockedFiltering={dashboard.stats.blocked_filtering}
-                                    replacedSafebrowsing={dashboard.stats.replaced_safebrowsing}
-                                    replacedParental={dashboard.stats.replaced_parental}
                             />
                         </div>
-                        }
                         <div className="col-lg-6">
-                            {dashboard.stats &&
                             <Counters
+                                subtitle={subtitle}
+                                interval={stats.interval}
+                                dnsQueries={stats.numDnsQueries}
+                                blockedFiltering={stats.numBlockedFiltering}
+                                replacedSafebrowsing={stats.numReplacedSafebrowsing}
+                                replacedParental={stats.numReplacedParental}
+                                replacedSafesearch={stats.numReplacedSafesearch}
+                                avgProcessingTime={stats.avgProcessingTime}
                                 refreshButton={refreshButton}
-                                    dnsQueries={dashboard.stats.dns_queries}
-                                    blockedFiltering={dashboard.stats.blocked_filtering}
-                                    replacedSafebrowsing={dashboard.stats.replaced_safebrowsing}
-                                    replacedParental={dashboard.stats.replaced_parental}
-                                    replacedSafesearch={dashboard.stats.replaced_safesearch}
-                                    avgProcessingTime={dashboard.stats.avg_processing_time}
                             />
-                            }
                         </div>
-                        {dashboard.topStats &&
-                            <Fragment>
                         <div className="col-lg-6">
                             <Clients
-                                        dnsQueries={dashboard.stats.dns_queries}
+                                subtitle={subtitle}
-                                        refreshButton={refreshButton}
+                                dnsQueries={stats.numDnsQueries}
-                                        topClients={dashboard.topStats.top_clients}
+                                topClients={stats.topClients}
                                 clients={dashboard.clients}
                                 autoClients={dashboard.autoClients}
+                                refreshButton={refreshButton}
                             />
                         </div>
                         <div className="col-lg-6">
                             <QueriedDomains
-                                        dnsQueries={dashboard.stats.dns_queries}
+                                subtitle={subtitle}
+                                dnsQueries={stats.numDnsQueries}
+                                topQueriedDomains={stats.topQueriedDomains}
                                 refreshButton={refreshButton}
-                                        topQueriedDomains={dashboard.topStats.top_queried_domains}
                             />
                         </div>
                         <div className="col-lg-6">
                             <BlockedDomains
+                                subtitle={subtitle}
+                                topBlockedDomains={stats.topBlockedDomains}
+                                blockedFiltering={stats.numBlockedFiltering}
+                                replacedSafebrowsing={stats.numReplacedSafebrowsing}
+                                replacedParental={stats.numReplacedParental}
                                 refreshButton={refreshButton}
-                                        topBlockedDomains={dashboard.topStats.top_blocked_domains}
-                                        blockedFiltering={dashboard.stats.blocked_filtering}
-                                        replacedSafebrowsing={dashboard.stats.replaced_safebrowsing}
-                                        replacedParental={dashboard.stats.replaced_parental}
                             />
                         </div>
-                            </Fragment>
-                        }
                     </div>
-                }
+                )}
             </Fragment>
         );
     }
 }
 
 Dashboard.propTypes = {
-    getStats: PropTypes.func,
+    dashboard: PropTypes.object.isRequired,
-    getStatsHistory: PropTypes.func,
+    stats: PropTypes.object.isRequired,
-    getTopStats: PropTypes.func,
+    getStats: PropTypes.func.isRequired,
-    dashboard: PropTypes.object,
+    getStatsConfig: PropTypes.func.isRequired,
-    isCoreRunning: PropTypes.bool,
+    toggleProtection: PropTypes.func.isRequired,
-    getFiltering: PropTypes.func,
+    getClients: PropTypes.func.isRequired,
-    toggleProtection: PropTypes.func,
+    t: PropTypes.func.isRequired,
-    getClients: PropTypes.func,
-    processingProtection: PropTypes.bool,
-    t: PropTypes.func,
 };
 
 export default withNamespaces()(Dashboard);

client/src/components/Filters/Modal.js

@@ -80,7 +80,7 @@ class Modal extends Component {
             }
             return (
                 <div className="description">
-                    <Trans>url_added_successfully</Trans>
+                    <Trans>filter_added_successfully</Trans>
                 </div>
             );
         };

client/src/components/Settings/Clients/AutoClients.js

@@ -3,32 +3,13 @@ import PropTypes from 'prop-types';
 import { withNamespaces } from 'react-i18next';
 import ReactTable from 'react-table';
 
-import { CLIENT_ID } from '../../../helpers/constants';
 import Card from '../../ui/Card';
 
 class AutoClients extends Component {
-    getClient = (name, clients) => {
-        const client = clients.find(item => name === item.name);
-
-        if (client) {
-            const identifier = client.mac ? CLIENT_ID.MAC : CLIENT_ID.IP;
-
-            return {
-                identifier,
-                use_global_settings: true,
-                ...client,
-            };
-        }
-
-        return {
-            identifier: 'ip',
-            use_global_settings: true,
-        };
-    };
-
     getStats = (ip, stats) => {
-        if (stats && stats.top_clients) {
+        if (stats) {
-            return stats.top_clients[ip];
+            const statsForCurrentIP = stats.find(item => item.name === ip);
+            return statsForCurrentIP && statsForCurrentIP.count;
         }
 
         return '';
@@ -59,11 +40,11 @@ class AutoClients extends Component {
             Cell: this.cellWrap,
         },
         {
-            Header: this.props.t('table_statistics'),
+            Header: this.props.t('requests_count'),
             accessor: 'statistics',
             Cell: (row) => {
                 const clientIP = row.original.ip;
-                const clientStats = clientIP && this.getStats(clientIP, this.props.topStats);
+                const clientStats = clientIP && this.getStats(clientIP, this.props.topClients);
 
                 if (clientStats) {
                     return (
@@ -112,7 +93,7 @@ class AutoClients extends Component {
 AutoClients.propTypes = {
     t: PropTypes.func.isRequired,
     autoClients: PropTypes.array.isRequired,
-    topStats: PropTypes.object.isRequired,
+    topClients: PropTypes.array.isRequired,
 };
 
 export default withNamespaces()(AutoClients);

client/src/components/Settings/Clients/ClientsTable.js

@@ -63,8 +63,9 @@ class ClientsTable extends Component {
     };
 
     getStats = (ip, stats) => {
-        if (stats && stats.top_clients) {
+        if (stats) {
-            return stats.top_clients[ip];
+            const statsForCurrentIP = stats.find(item => item.name === ip);
+            return statsForCurrentIP && statsForCurrentIP.count;
         }
 
         return '';
@@ -149,11 +150,11 @@ class ClientsTable extends Component {
             },
         },
         {
-            Header: this.props.t('table_statistics'),
+            Header: this.props.t('requests_count'),
             accessor: 'statistics',
             Cell: (row) => {
                 const clientIP = row.original.ip;
-                const clientStats = clientIP && this.getStats(clientIP, this.props.topStats);
+                const clientStats = clientIP && this.getStats(clientIP, this.props.topClients);
 
                 if (clientStats) {
                     return (
@@ -276,7 +277,7 @@ class ClientsTable extends Component {
 ClientsTable.propTypes = {
     t: PropTypes.func.isRequired,
     clients: PropTypes.array.isRequired,
-    topStats: PropTypes.object.isRequired,
+    topClients: PropTypes.array.isRequired,
     toggleClientModal: PropTypes.func.isRequired,
     deleteClient: PropTypes.func.isRequired,
     addClient: PropTypes.func.isRequired,

client/src/components/Settings/Clients/index.js

@@ -10,13 +10,14 @@ import Loading from '../../ui/Loading';
 class Clients extends Component {
     componentDidMount() {
         this.props.getClients();
-        this.props.getTopStats();
+        this.props.getStats();
     }
 
     render() {
         const {
             t,
             dashboard,
+            stats,
             clients,
             addClient,
             updateClient,
@@ -27,12 +28,12 @@ class Clients extends Component {
         return (
             <Fragment>
                 <PageTitle title={t('client_settings')} />
-                {(dashboard.processingTopStats || dashboard.processingClients) && <Loading />}
+                {(stats.processingStats || dashboard.processingClients) && <Loading />}
-                {!dashboard.processingTopStats && !dashboard.processingClients && (
+                {!stats.processingStats && !dashboard.processingClients && (
                     <Fragment>
                         <ClientsTable
                             clients={dashboard.clients}
-                            topStats={dashboard.topStats}
+                            topClients={stats.topClients}
                             isModalOpen={clients.isModalOpen}
                             modalClientName={clients.modalClientName}
                             modalType={clients.modalType}
@@ -46,7 +47,7 @@ class Clients extends Component {
                         />
                         <AutoClients
                             autoClients={dashboard.autoClients}
-                            topStats={dashboard.topStats}
+                            topClients={stats.topClients}
                         />
                     </Fragment>
                 )}
@@ -58,14 +59,14 @@ class Clients extends Component {
 Clients.propTypes = {
     t: PropTypes.func.isRequired,
     dashboard: PropTypes.object.isRequired,
+    stats: PropTypes.object.isRequired,
     clients: PropTypes.object.isRequired,
     toggleClientModal: PropTypes.func.isRequired,
     deleteClient: PropTypes.func.isRequired,
     addClient: PropTypes.func.isRequired,
     updateClient: PropTypes.func.isRequired,
     getClients: PropTypes.func.isRequired,
-    getTopStats: PropTypes.func.isRequired,
+    getStats: PropTypes.func.isRequired,
-    topStats: PropTypes.object,
 };
 
 export default withNamespaces()(Clients);

client/src/components/Settings/Dns/Rewrites/Modal.js

@@ -24,7 +24,7 @@ const Modal = (props) => {
             <div className="modal-content">
                 <div className="modal-header">
                     <h4 className="modal-title">
-                        <Trans>Add DNS rewrite</Trans>
+                        <Trans>rewrite_add</Trans>
                     </h4>
                     <button type="button" className="close" onClick={() => toggleRewritesModal()}>
                         <span className="sr-only">Close</span>

client/src/components/Settings/Dns/Rewrites/Table.js

@@ -14,12 +14,12 @@ class Table extends Component {
 
     columns = [
         {
-            Header: 'Domain',
+            Header: this.props.t('domain'),
             accessor: 'domain',
             Cell: this.cellWrap,
         },
         {
-            Header: 'Answer',
+            Header: this.props.t('answer'),
             accessor: 'answer',
             Cell: this.cellWrap,
         },

client/src/components/Settings/Services/index.js

@@ -44,7 +44,7 @@ class Services extends Component {
         return (
             <Card
                 title={t('blocked_services')}
-                subtitle={t('Allows to quickly block popular sites.')}
+                subtitle={t('blocked_services_desc')}
                 bodyType="card-body box-body--settings"
             >
                 <div className="form">

client/src/components/Settings/Settings.css

@@ -104,3 +104,8 @@
     min-width: 23px;
     padding: 5px;
 }
+
+.custom-control-label,
+.custom-control-label:before {
+    transition: 0.3s ease-in-out background-color, 0.3s ease-in-out color;
+}

client/src/components/Settings/StatsConfig/Form.js

@@ -0,0 +1,74 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { Field, reduxForm } from 'redux-form';
+import { Trans, withNamespaces } from 'react-i18next';
+import flow from 'lodash/flow';
+
+import { renderRadioField, toNumber } from '../../../helpers/form';
+import { STATS_INTERVALS_DAYS } from '../../../helpers/constants';
+
+const getIntervalFields = (processing, t, handleChange, toNumber) =>
+    STATS_INTERVALS_DAYS.map((interval) => {
+        const title = interval === 1
+            ? t('interval_24_hour')
+            : t('interval_days', { count: interval });
+
+        return (
+            <Field
+                key={interval}
+                name="interval"
+                type="radio"
+                component={renderRadioField}
+                value={interval}
+                placeholder={title}
+                onChange={handleChange}
+                normalize={toNumber}
+                disabled={processing}
+            />
+        );
+    });
+
+const Form = (props) => {
+    const {
+        handleSubmit, handleChange, processing, t,
+    } = props;
+
+    return (
+        <form onSubmit={handleSubmit}>
+            <div className="row">
+                <div className="col-12">
+                    <label className="form__label form__label--with-desc" htmlFor="server_name">
+                        <Trans>statistics_retention</Trans>
+                    </label>
+                    <div className="form__desc form__desc--top">
+                        <Trans>statistics_retention_desc</Trans>
+                    </div>
+                </div>
+                <div className="col-12">
+                    <div className="form__group mt-2">
+                        <div className="custom-controls-stacked">
+                            {getIntervalFields(processing, t, handleChange, toNumber)}
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </form>
+    );
+};
+
+Form.propTypes = {
+    handleSubmit: PropTypes.func.isRequired,
+    handleChange: PropTypes.func,
+    change: PropTypes.func.isRequired,
+    submitting: PropTypes.bool.isRequired,
+    invalid: PropTypes.bool.isRequired,
+    processing: PropTypes.bool.isRequired,
+    t: PropTypes.func.isRequired,
+};
+
+export default flow([
+    withNamespaces(),
+    reduxForm({
+        form: 'logConfigForm',
+    }),
+])(Form);

client/src/components/Settings/StatsConfig/index.js

@@ -0,0 +1,63 @@
+import React, { Component } from 'react';
+import PropTypes from 'prop-types';
+import { withNamespaces, Trans } from 'react-i18next';
+import debounce from 'lodash/debounce';
+
+import { DEBOUNCE_TIMEOUT } from '../../../helpers/constants';
+import Form from './Form';
+import Card from '../../ui/Card';
+
+class StatsConfig extends Component {
+    handleFormChange = debounce((values) => {
+        this.props.setStatsConfig(values);
+    }, DEBOUNCE_TIMEOUT);
+
+    handleReset = () => {
+        const { t, resetStats } = this.props;
+        // eslint-disable-next-line no-alert
+        if (window.confirm(t('statistics_clear_confirm'))) {
+            resetStats();
+        }
+    };
+
+    render() {
+        const {
+            t, interval, processing, processingReset,
+        } = this.props;
+
+        return (
+            <Card title={t('statistics_logs')} bodyType="card-body box-body--settings">
+                <div className="form">
+                    <Form
+                        initialValues={{
+                            interval,
+                        }}
+                        onSubmit={this.handleFormChange}
+                        onChange={this.handleFormChange}
+                        processing={processing}
+                    />
+
+                    <button
+                        type="button"
+                        className="btn btn-outline-secondary btn-sm mt-3"
+                        onClick={this.handleReset}
+                        disabled={processingReset}
+                    >
+                        <Trans>statistics_clear</Trans>
+                    </button>
+                </div>
+            </Card>
+        );
+    }
+}
+
+StatsConfig.propTypes = {
+    interval: PropTypes.number.isRequired,
+    processing: PropTypes.bool.isRequired,
+    processingReset: PropTypes.bool.isRequired,
+    setStatsConfig: PropTypes.func.isRequired,
+    resetStats: PropTypes.func.isRequired,
+    t: PropTypes.func.isRequired,
+};
+
+export default withNamespaces()(StatsConfig);

client/src/components/Settings/index.js

@@ -3,6 +3,7 @@ import PropTypes from 'prop-types';
 import { withNamespaces, Trans } from 'react-i18next';
 
 import Services from './Services';
+import StatsConfig from './StatsConfig';
 import Checkbox from '../ui/Checkbox';
 import Loading from '../ui/Loading';
 import PageTitle from '../ui/PageTitle';
@@ -37,6 +38,7 @@ class Settings extends Component {
     componentDidMount() {
         this.props.initSettings(this.settings);
         this.props.getBlockedServices();
+        this.props.getStatsConfig();
     }
 
     renderSettings = (settings) => {
@@ -62,7 +64,13 @@ class Settings extends Component {
 
     render() {
         const {
-            settings, services, setBlockedServices, t,
+            settings,
+            services,
+            setBlockedServices,
+            setStatsConfig,
+            resetStats,
+            stats,
+            t,
         } = this.props;
         return (
             <Fragment>
@@ -78,6 +86,15 @@ class Settings extends Component {
                                     </div>
                                 </Card>
                             </div>
+                            <div className="col-md-12">
+                                <StatsConfig
+                                    interval={stats.interval}
+                                    processing={stats.processingSetConfig}
+                                    processingReset={stats.processingReset}
+                                    setStatsConfig={setStatsConfig}
+                                    resetStats={resetStats}
+                                />
+                            </div>
                             <div className="col-md-12">
                                 <Services
                                     services={services}
@@ -93,11 +110,13 @@ class Settings extends Component {
 }
 
 Settings.propTypes = {
-    initSettings: PropTypes.func,
+    initSettings: PropTypes.func.isRequired,
-    settings: PropTypes.object,
+    settings: PropTypes.object.isRequired,
-    settingsList: PropTypes.object,
+    toggleSetting: PropTypes.func.isRequired,
-    toggleSetting: PropTypes.func,
+    getStatsConfig: PropTypes.func.isRequired,
-    t: PropTypes.func,
+    setStatsConfig: PropTypes.func.isRequired,
+    resetStats: PropTypes.func.isRequired,
+    t: PropTypes.func.isRequired,
 };
 
 export default withNamespaces()(Settings);

client/src/components/ui/Cell.js

@@ -5,9 +5,7 @@ const Cell = props => (
     <div className="stats__row">
         <div className="stats__row-value mb-1">
             <strong>{props.value}</strong>
-            <small className="ml-3 text-muted">
+            <small className="ml-3 text-muted">{props.percent}%</small>
-                {props.percent}%
-            </small>
         </div>
         <div className="progress progress-xs">
             <div

client/src/components/ui/Line.js

@@ -4,33 +4,27 @@ import { ResponsiveLine } from '@nivo/line';
 
 import './Line.css';
 
-const Line = props => (
+const Line = ({ data, color }) => (
-    props.data &&
+    data &&
         <ResponsiveLine
-            data={props.data}
+            data={data}
             margin={{
                 top: 15,
                 right: 0,
                 bottom: 1,
-                left: 0,
+                left: 20,
             }}
             minY="auto"
             stacked={false}
             curve='linear'
-            axisBottom={{
+            axisBottom={null}
-                tickSize: 0,
+            axisLeft={null}
-                tickPadding: 10,
-            }}
-            axisLeft={{
-                tickSize: 0,
-                tickPadding: 10,
-            }}
             enableGridX={false}
             enableGridY={false}
             enableDots={false}
             enableArea={true}
             animate={false}
-            colorBy={() => (props.color)}
+            colorBy={() => (color)}
             tooltip={slice => (
                 <div>
                     {slice.data.map(d => (

client/src/containers/Clients.js

@@ -1,20 +1,22 @@
 import { connect } from 'react-redux';
-import { getClients, getTopStats } from '../actions';
+import { getClients } from '../actions';
+import { getStats } from '../actions/stats';
 import { addClient, updateClient, deleteClient, toggleClientModal } from '../actions/clients';
 import Clients from '../components/Settings/Clients';
 
 const mapStateToProps = (state) => {
-    const { dashboard, clients } = state;
+    const { dashboard, clients, stats } = state;
     const props = {
         dashboard,
         clients,
+        stats,
     };
     return props;
 };
 
 const mapDispatchToProps = {
     getClients,
-    getTopStats,
+    getStats,
     addClient,
     updateClient,
     deleteClient,

client/src/containers/Dashboard.js

@@ -1,14 +1,23 @@
 import { connect } from 'react-redux';
-import * as actionCreators from '../actions';
+import { toggleProtection, getClients } from '../actions';
+import { getStats, getStatsConfig, setStatsConfig } from '../actions/stats';
 import Dashboard from '../components/Dashboard';
 
 const mapStateToProps = (state) => {
-    const { dashboard } = state;
+    const { dashboard, stats } = state;
-    const props = { dashboard };
+    const props = { dashboard, stats };
     return props;
 };
 
+const mapDispatchToProps = {
+    toggleProtection,
+    getClients,
+    getStats,
+    getStatsConfig,
+    setStatsConfig,
+};
+
 export default connect(
     mapStateToProps,
-    actionCreators,
+    mapDispatchToProps,
 )(Dashboard);

client/src/containers/Settings.js

@@ -1,13 +1,15 @@
 import { connect } from 'react-redux';
 import { initSettings, toggleSetting } from '../actions';
 import { getBlockedServices, setBlockedServices } from '../actions/services';
+import { getStatsConfig, setStatsConfig, resetStats } from '../actions/stats';
 import Settings from '../components/Settings';
 
 const mapStateToProps = (state) => {
-    const { settings, services } = state;
+    const { settings, services, stats } = state;
     const props = {
         settings,
         services,
+        stats,
     };
     return props;
 };
@@ -17,6 +19,9 @@ const mapDispatchToProps = {
     toggleSetting,
     getBlockedServices,
     setBlockedServices,
+    getStatsConfig,
+    setStatsConfig,
+    resetStats,
 };
 
 export default connect(

client/src/helpers/constants.js

@@ -260,3 +260,5 @@ export const FILTERED_STATUS = {
     FILTERED_BLOCKED_SERVICE: 'FilteredBlockedService',
     REWRITE: 'Rewrite',
 };
+
+export const STATS_INTERVALS_DAYS = [1, 7, 30, 90];

client/src/helpers/helpers.js

@@ -2,11 +2,12 @@ import dateParse from 'date-fns/parse';
 import dateFormat from 'date-fns/format';
 import subHours from 'date-fns/sub_hours';
 import addHours from 'date-fns/add_hours';
+import addDays from 'date-fns/add_days';
+import subDays from 'date-fns/sub_days';
 import round from 'lodash/round';
 import axios from 'axios';
 
 import {
-    STATS_NAMES,
     STANDARD_DNS_PORT,
     STANDARD_WEB_PORT,
     STANDARD_HTTPS_PORT,
@@ -49,29 +50,28 @@ export const normalizeLogs = logs => logs.map((log) => {
     };
 });
 
-export const normalizeHistory = history => Object.keys(history).map((key) => {
+export const normalizeHistory = (history, interval) => {
-    let id = STATS_NAMES[key];
+    if (interval === 1 || interval === 7) {
-    if (!id) {
+        const hoursAgo = subHours(Date.now(), 24 * interval);
-        id = key.replace(/_/g, ' ').replace(/^\w/, c => c.toUpperCase());
+        return history.map((item, index) => ({
+            x: dateFormat(addHours(hoursAgo, index), 'D MMM HH:00'),
+            y: round(item, 2),
+        }));
     }
 
-    const dayAgo = subHours(Date.now(), 24);
+    const daysAgo = subDays(Date.now(), interval - 1);
-
+    return history.map((item, index) => ({
-    const data = history[key].map((item, index) => {
+        x: dateFormat(addDays(daysAgo, index), 'D MMM YYYY'),
-        const formatHour = dateFormat(addHours(dayAgo, index), 'ddd HH:00');
+        y: round(item, 2),
-        const roundValue = round(item, 2);
+    }));
-
-        return {
-            x: formatHour,
-            y: roundValue,
 };
-    });
 
-    return {
+export const normalizeTopStats = stats => (
-        id,
+    stats.map(item => ({
-        data,
+        name: Object.keys(item)[0],
-    };
+        count: Object.values(item)[0],
-});
+    }))
+);
 
 export const normalizeFilteringStatus = (filteringStatus) => {
     const { enabled, filters, user_rules: userRules } = filteringStatus;
@@ -233,3 +233,11 @@ export const sortClients = (clients) => {
 export const toggleAllServices = (services, change, isSelected) => {
     services.forEach(service => change(`blocked_services.${service.id}`, isSelected));
 };
+
+export const secondsToMilliseconds = (seconds) => {
+    if (seconds) {
+        return seconds * 1000;
+    }
+
+    return seconds;
+};

client/src/reducers/index.js

@@ -11,6 +11,7 @@ import clients from './clients';
 import access from './access';
 import rewrites from './rewrites';
 import services from './services';
+import stats from './stats';
 
 const settings = handleActions({
     [actions.initSettingsRequest]: state => ({ ...state, processing: true }),
@@ -93,27 +94,6 @@ const dashboard = handleActions({
         return newState;
     },
 
-    [actions.getStatsRequest]: state => ({ ...state, processingStats: true }),
-    [actions.getStatsFailure]: state => ({ ...state, processingStats: false }),
-    [actions.getStatsSuccess]: (state, { payload }) => {
-        const newState = { ...state, stats: payload, processingStats: false };
-        return newState;
-    },
-
-    [actions.getTopStatsRequest]: state => ({ ...state, processingTopStats: true }),
-    [actions.getTopStatsFailure]: state => ({ ...state, processingTopStats: false }),
-    [actions.getTopStatsSuccess]: (state, { payload }) => {
-        const newState = { ...state, topStats: payload, processingTopStats: false };
-        return newState;
-    },
-
-    [actions.getStatsHistoryRequest]: state => ({ ...state, processingStatsHistory: true }),
-    [actions.getStatsHistoryFailure]: state => ({ ...state, processingStatsHistory: false }),
-    [actions.getStatsHistorySuccess]: (state, { payload }) => {
-        const newState = { ...state, statsHistory: payload, processingStatsHistory: false };
-        return newState;
-    },
-
     [actions.toggleLogStatusRequest]: state => ({ ...state, logStatusProcessing: true }),
     [actions.toggleLogStatusFailure]: state => ({ ...state, logStatusProcessing: false }),
     [actions.toggleLogStatusSuccess]: (state) => {
@@ -199,8 +179,6 @@ const dashboard = handleActions({
 }, {
     processing: true,
     isCoreRunning: false,
-    processingTopStats: true,
-    processingStats: true,
     logStatusProcessing: false,
     processingVersion: true,
     processingFiltering: true,
@@ -217,7 +195,6 @@ const dashboard = handleActions({
     dnsVersion: '',
     clients: [],
     autoClients: [],
-    topStats: [],
 });
 
 const queryLogs = handleActions({
@@ -230,7 +207,11 @@ const queryLogs = handleActions({
     [actions.downloadQueryLogRequest]: state => ({ ...state, logsDownloading: true }),
     [actions.downloadQueryLogFailure]: state => ({ ...state, logsDownloading: false }),
     [actions.downloadQueryLogSuccess]: state => ({ ...state, logsDownloading: false }),
-}, { getLogsProcessing: false, logsDownloading: false });
+}, {
+    getLogsProcessing: false,
+    logsDownloading: false,
+    logs: [],
+});
 
 const filtering = handleActions({
     [actions.setRulesRequest]: state => ({ ...state, processingRules: true }),
@@ -426,6 +407,7 @@ export default combineReducers({
     access,
     rewrites,
     services,
+    stats,
     loadingBar: loadingBarReducer,
     form: formReducer,
 });

client/src/reducers/stats.js

@@ -0,0 +1,97 @@
+import { handleActions } from 'redux-actions';
+
+import * as actions from '../actions/stats';
+
+const defaultStats = {
+    dnsQueries: [],
+    blockedFiltering: [],
+    replacedParental: [],
+    replacedSafebrowsing: [],
+    topBlockedDomains: [],
+    topClients: [],
+    topQueriedDomains: [],
+    numBlockedFiltering: 0,
+    numDnsQueries: 0,
+    numReplacedParental: 0,
+    numReplacedSafebrowsing: 0,
+    numReplacedSafesearch: 0,
+    avgProcessingTime: 0,
+};
+
+const stats = handleActions(
+    {
+        [actions.getStatsConfigRequest]: state => ({ ...state, processingGetConfig: true }),
+        [actions.getStatsConfigFailure]: state => ({ ...state, processingGetConfig: false }),
+        [actions.getStatsConfigSuccess]: (state, { payload }) => ({
+            ...state,
+            interval: payload.interval,
+            processingGetConfig: false,
+        }),
+
+        [actions.setStatsConfigRequest]: state => ({ ...state, processingSetConfig: true }),
+        [actions.setStatsConfigFailure]: state => ({ ...state, processingSetConfig: false }),
+        [actions.setStatsConfigSuccess]: (state, { payload }) => ({
+            ...state,
+            interval: payload.interval,
+            processingSetConfig: false,
+        }),
+
+        [actions.getStatsRequest]: state => ({ ...state, processingStats: true }),
+        [actions.getStatsFailure]: state => ({ ...state, processingStats: false }),
+        [actions.getStatsSuccess]: (state, { payload }) => {
+            const {
+                dns_queries: dnsQueries,
+                blocked_filtering: blockedFiltering,
+                replaced_parental: replacedParental,
+                replaced_safebrowsing: replacedSafebrowsing,
+                top_blocked_domains: topBlockedDomains,
+                top_clients: topClients,
+                top_queried_domains: topQueriedDomains,
+                num_blocked_filtering: numBlockedFiltering,
+                num_dns_queries: numDnsQueries,
+                num_replaced_parental: numReplacedParental,
+                num_replaced_safebrowsing: numReplacedSafebrowsing,
+                num_replaced_safesearch: numReplacedSafesearch,
+                avg_processing_time: avgProcessingTime,
+            } = payload;
+
+            const newState = {
+                ...state,
+                processingStats: false,
+                dnsQueries,
+                blockedFiltering,
+                replacedParental,
+                replacedSafebrowsing,
+                topBlockedDomains,
+                topClients,
+                topQueriedDomains,
+                numBlockedFiltering,
+                numDnsQueries,
+                numReplacedParental,
+                numReplacedSafebrowsing,
+                numReplacedSafesearch,
+                avgProcessingTime,
+            };
+
+            return newState;
+        },
+
+        [actions.resetStatsRequest]: state => ({ ...state, processingReset: true }),
+        [actions.resetStatsFailure]: state => ({ ...state, processingReset: false }),
+        [actions.resetStatsSuccess]: state => ({
+            ...state,
+            ...defaultStats,
+            processingReset: false,
+        }),
+    },
+    {
+        processingGetConfig: false,
+        processingSetConfig: false,
+        processingStats: true,
+        processingReset: false,
+        interval: 1,
+        ...defaultStats,
+    },
+);
+
+export default stats;

dnsforward/dnsforward.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"github.com/AdguardTeam/AdGuardHome/dnsfilter"
+	"github.com/AdguardTeam/AdGuardHome/stats"
 	"github.com/AdguardTeam/dnsproxy/proxy"
 	"github.com/AdguardTeam/dnsproxy/upstream"
 	"github.com/AdguardTeam/golibs/log"
@@ -40,7 +41,7 @@ type Server struct {
 	dnsProxy  *proxy.Proxy         // DNS proxy instance
 	dnsFilter *dnsfilter.Dnsfilter // DNS filter instance
 	queryLog  *queryLog            // Query log instance
-	stats     *stats               // General server statistics
+	stats     stats.Stats
 
 	AllowedClients         map[string]bool // IP addresses of whitelist clients
 	DisallowedClients      map[string]bool // IP addresses of clients that should be blocked
@@ -55,22 +56,14 @@ type Server struct {
 // NewServer creates a new instance of the dnsforward.Server
 // baseDir is the base directory for query logs
 // Note: this function must be called only once
-func NewServer(baseDir string) *Server {
+func NewServer(baseDir string, stats stats.Stats) *Server {
 	s := &Server{
 		queryLog: newQueryLog(baseDir),
-		stats:    newStats(),
-	}
-
-	log.Tracef("Loading stats from querylog")
-	err := s.queryLog.fillStatsFromQueryLog(s.stats)
-	if err != nil {
-		log.Error("failed to load stats from querylog: %s", err)
 	}
+	s.stats = stats
 
 	log.Printf("Start DNS server periodic jobs")
 	go s.queryLog.periodicQueryLogRotate()
-	go s.queryLog.runningTop.periodicHourlyTopRotate()
-	go s.stats.statsRotator()
 	return s
 }
 
@@ -357,38 +350,6 @@ func (s *Server) GetQueryLog() []map[string]interface{} {
 	return s.queryLog.getQueryLog()
 }
 
-// GetStatsTop returns the current stop stats
-func (s *Server) GetStatsTop() *StatsTop {
-	s.RLock()
-	defer s.RUnlock()
-	return s.queryLog.runningTop.getStatsTop()
-}
-
-// PurgeStats purges current server stats
-func (s *Server) PurgeStats() {
-	s.Lock()
-	defer s.Unlock()
-	s.stats.purgeStats()
-}
-
-// GetAggregatedStats returns aggregated stats data for the 24 hours
-func (s *Server) GetAggregatedStats() map[string]interface{} {
-	s.RLock()
-	defer s.RUnlock()
-	return s.stats.getAggregatedStats()
-}
-
-// GetStatsHistory gets stats history aggregated by the specified time unit
-// timeUnit is either time.Second, time.Minute, time.Hour, or 24*time.Hour
-// start is start of the time range
-// end is end of the time range
-// returns nil if time unit is not supported
-func (s *Server) GetStatsHistory(timeUnit time.Duration, startTime time.Time, endTime time.Time) (map[string]interface{}, error) {
-	s.RLock()
-	defer s.RUnlock()
-	return s.stats.getStatsHistory(timeUnit, startTime, endTime)
-}
-
 // Return TRUE if this client should be blocked
 func (s *Server) isBlockedIP(ip string) bool {
 	if len(s.AllowedClients) != 0 || len(s.AllowedClientsIPNet) != 0 {
@@ -507,21 +468,61 @@ func (s *Server) handleDNSRequest(p *proxy.Proxy, d *proxy.DNSContext) error {
 		shouldLog = false
 	}
 
-	if s.conf.QueryLogEnabled && shouldLog {
 	elapsed := time.Since(start)
+	if s.conf.QueryLogEnabled && shouldLog {
 		upstreamAddr := ""
 		if d.Upstream != nil {
 			upstreamAddr = d.Upstream.Address()
 		}
-		entry := s.queryLog.logRequest(msg, d.Res, res, elapsed, d.Addr, upstreamAddr)
+		_ = s.queryLog.logRequest(msg, d.Res, res, elapsed, d.Addr, upstreamAddr)
-		if entry != nil {
-			s.stats.incrementCounters(entry)
-		}
 	}
 
+	s.updateStats(d, elapsed, *res)
+
 	return nil
 }
 
+func (s *Server) updateStats(d *proxy.DNSContext, elapsed time.Duration, res dnsfilter.Result) {
+	if s.stats == nil {
+		return
+	}
+
+	e := stats.Entry{}
+	e.Domain = strings.ToLower(d.Req.Question[0].Name)
+	e.Domain = e.Domain[:len(e.Domain)-1] // remove last "."
+	switch addr := d.Addr.(type) {
+	case *net.UDPAddr:
+		e.Client = addr.IP
+	case *net.TCPAddr:
+		e.Client = addr.IP
+	}
+	e.Time = uint(elapsed / 1000)
+	switch res.Reason {
+
+	case dnsfilter.NotFilteredNotFound:
+		fallthrough
+	case dnsfilter.NotFilteredWhiteList:
+		fallthrough
+	case dnsfilter.NotFilteredError:
+		e.Result = stats.RNotFiltered
+
+	case dnsfilter.FilteredSafeBrowsing:
+		e.Result = stats.RSafeBrowsing
+	case dnsfilter.FilteredParental:
+		e.Result = stats.RParental
+	case dnsfilter.FilteredSafeSearch:
+		e.Result = stats.RSafeSearch
+
+	case dnsfilter.FilteredBlackList:
+		fallthrough
+	case dnsfilter.FilteredInvalid:
+		fallthrough
+	case dnsfilter.FilteredBlockedService:
+		e.Result = stats.RFiltered
+	}
+	s.stats.Update(e)
+}
+
 // filterDNSRequest applies the dnsFilter and sets d.Res if the request was filtered
 func (s *Server) filterDNSRequest(d *proxy.DNSContext) (*dnsfilter.Result, error) {
 	var res dnsfilter.Result

dnsforward/dnsforward_test.go

@@ -48,10 +48,6 @@ func TestServer(t *testing.T) {
 	// check query log and stats
 	log := s.GetQueryLog()
 	assert.Equal(t, 1, len(log), "Log size")
-	stats := s.GetStatsTop()
-	assert.Equal(t, 1, len(stats.Domains), "Top domains length")
-	assert.Equal(t, 0, len(stats.Blocked), "Top blocked length")
-	assert.Equal(t, 1, len(stats.Clients), "Top clients length")
 
 	// message over TCP
 	req = createGoogleATestMessage()
@@ -66,11 +62,6 @@ func TestServer(t *testing.T) {
 	// check query log and stats again
 	log = s.GetQueryLog()
 	assert.Equal(t, 2, len(log), "Log size")
-	stats = s.GetStatsTop()
-	// Length did not change as we queried the same domain
-	assert.Equal(t, 1, len(stats.Domains), "Top domains length")
-	assert.Equal(t, 0, len(stats.Blocked), "Top blocked length")
-	assert.Equal(t, 1, len(stats.Clients), "Top clients length")
 
 	err = s.Stop()
 	if err != nil {
@@ -100,10 +91,6 @@ func TestServerWithProtectionDisabled(t *testing.T) {
 	// check query log and stats
 	log := s.GetQueryLog()
 	assert.Equal(t, 1, len(log), "Log size")
-	stats := s.GetStatsTop()
-	assert.Equal(t, 1, len(stats.Domains), "Top domains length")
-	assert.Equal(t, 0, len(stats.Blocked), "Top blocked length")
-	assert.Equal(t, 1, len(stats.Clients), "Top clients length")
 
 	err = s.Stop()
 	if err != nil {
@@ -195,11 +182,6 @@ func TestSafeSearch(t *testing.T) {
 		exchangeAndAssertResponse(t, &client, addr, host, "213.180.193.56")
 	}
 
-	// Check aggregated stats
-	assert.Equal(t, s.GetAggregatedStats()["replaced_safesearch"], float64(len(yandexDomains)))
-	assert.Equal(t, s.GetAggregatedStats()["blocked_filtering"], float64(len(yandexDomains)))
-	assert.Equal(t, s.GetAggregatedStats()["dns_queries"], float64(len(yandexDomains)))
-
 	// Let's lookup for google safesearch ip
 	ips, err := net.LookupIP("forcesafesearch.google.com")
 	if err != nil {
@@ -220,27 +202,6 @@ func TestSafeSearch(t *testing.T) {
 		exchangeAndAssertResponse(t, &client, addr, host, ip.String())
 	}
 
-	// Check aggregated stats
-	assert.Equal(t, s.GetAggregatedStats()["replaced_safesearch"], float64(len(yandexDomains)+len(googleDomains)))
-	assert.Equal(t, s.GetAggregatedStats()["blocked_filtering"], float64(len(yandexDomains)+len(googleDomains)))
-	assert.Equal(t, s.GetAggregatedStats()["dns_queries"], float64(len(yandexDomains)+len(googleDomains)))
-
-	// Do one more exchange
-	exchangeAndAssertResponse(t, &client, addr, "google-public-dns-a.google.com.", "8.8.8.8")
-
-	// Check aggregated stats
-	assert.Equal(t, s.GetAggregatedStats()["replaced_safesearch"], float64(len(yandexDomains)+len(googleDomains)))
-	assert.Equal(t, s.GetAggregatedStats()["blocked_filtering"], float64(len(yandexDomains)+len(googleDomains)))
-	assert.Equal(t, s.GetAggregatedStats()["dns_queries"], float64(len(yandexDomains)+len(googleDomains)+1))
-
-	// Count of blocked domains	(there is `yandex.com` duplicate in yandexDomains array)
-	blockedCount := len(yandexDomains) - 1 + len(googleDomains)
-	assert.Equal(t, len(s.GetStatsTop().Blocked), blockedCount)
-
-	// Count of domains (blocked domains + `google-public-dns-a.google.com`)
-	domainsCount := blockedCount + 1
-	assert.Equal(t, len(s.GetStatsTop().Domains), domainsCount)
-
 	err = s.Stop()
 	if err != nil {
 		t.Fatalf("Can not stopd server cause: %s", err)
@@ -272,10 +233,6 @@ func TestInvalidRequest(t *testing.T) {
 	// invalid requests aren't written to the query log
 	log := s.GetQueryLog()
 	assert.Equal(t, 0, len(log), "Log size")
-	stats := s.GetStatsTop()
-	assert.Equal(t, 0, len(stats.Domains), "Top domains length")
-	assert.Equal(t, 0, len(stats.Blocked), "Top blocked length")
-	assert.Equal(t, 0, len(stats.Clients), "Top clients length")
 
 	err = s.Stop()
 	if err != nil {
@@ -313,10 +270,6 @@ func TestBlockedRequest(t *testing.T) {
 	// check query log and stats
 	log := s.GetQueryLog()
 	assert.Equal(t, 1, len(log), "Log size")
-	stats := s.GetStatsTop()
-	assert.Equal(t, 1, len(stats.Domains), "Top domains length")
-	assert.Equal(t, 1, len(stats.Blocked), "Top blocked length")
-	assert.Equal(t, 1, len(stats.Clients), "Top clients length")
 
 	err = s.Stop()
 	if err != nil {
@@ -362,10 +315,6 @@ func TestNullBlockedRequest(t *testing.T) {
 	// check query log and stats
 	log := s.GetQueryLog()
 	assert.Equal(t, 1, len(log), "Log size")
-	stats := s.GetStatsTop()
-	assert.Equal(t, 1, len(stats.Domains), "Top domains length")
-	assert.Equal(t, 1, len(stats.Blocked), "Top blocked length")
-	assert.Equal(t, 1, len(stats.Clients), "Top clients length")
 
 	err = s.Stop()
 	if err != nil {
@@ -410,10 +359,6 @@ func TestBlockedByHosts(t *testing.T) {
 	// check query log and stats
 	log := s.GetQueryLog()
 	assert.Equal(t, 1, len(log), "Log size")
-	stats := s.GetStatsTop()
-	assert.Equal(t, 1, len(stats.Domains), "Top domains length")
-	assert.Equal(t, 1, len(stats.Blocked), "Top blocked length")
-	assert.Equal(t, 1, len(stats.Clients), "Top clients length")
 
 	err = s.Stop()
 	if err != nil {
@@ -469,10 +414,6 @@ func TestBlockedBySafeBrowsing(t *testing.T) {
 	// check query log and stats
 	log := s.GetQueryLog()
 	assert.Equal(t, 1, len(log), "Log size")
-	stats := s.GetStatsTop()
-	assert.Equal(t, 1, len(stats.Domains), "Top domains length")
-	assert.Equal(t, 1, len(stats.Blocked), "Top blocked length")
-	assert.Equal(t, 1, len(stats.Clients), "Top clients length")
 
 	err = s.Stop()
 	if err != nil {
@@ -481,7 +422,7 @@ func TestBlockedBySafeBrowsing(t *testing.T) {
 }
 
 func createTestServer(t *testing.T) *Server {
-	s := NewServer(createDataDir(t))
+	s := NewServer(createDataDir(t), nil)
 	s.conf.UDPListenAddr = &net.UDPAddr{Port: 0}
 	s.conf.TCPListenAddr = &net.TCPAddr{Port: 0}
 

dnsforward/querylog.go

@@ -26,7 +26,6 @@ const (
 // queryLog is a structure that writes and reads the DNS query log
 type queryLog struct {
 	logFile string // path to the log file
-	runningTop *dayTop // current top charts
 
 	logBufferLock sync.RWMutex
 	logBuffer     []*logEntry
@@ -41,9 +40,7 @@ type queryLog struct {
 func newQueryLog(baseDir string) *queryLog {
 	l := &queryLog{
 		logFile: filepath.Join(baseDir, queryLogFileName),
-		runningTop: &dayTop{},
 	}
-	l.runningTop.init()
 	return l
 }
 
@@ -112,13 +109,6 @@ func (l *queryLog) logRequest(question *dns.Msg, answer *dns.Msg, result *dnsfil
 	}
 	l.queryLogLock.Unlock()
 
-	// add it to running top
-	err = l.runningTop.addEntry(&entry, question, now)
-	if err != nil {
-		log.Printf("Failed to add entry to running top: %s", err)
-		// don't do failure, just log
-	}
-
 	// if buffer needs to be flushed to disk, do it now
 	if needFlush {
 		// write to file

dnsforward/querylog_file.go

@@ -178,99 +178,3 @@ func (l *queryLog) periodicQueryLogRotate() {
 		}
 	}
 }
-
-func (l *queryLog) genericLoader(onEntry func(entry *logEntry) error, needMore func() bool, timeWindow time.Duration) error {
-	now := time.Now()
-	// read from querylog files, try newest file first
-	var files []string
-
-	if enableGzip {
-		files = []string{
-			l.logFile + ".gz",
-			l.logFile + ".gz.1",
-		}
-	} else {
-		files = []string{
-			l.logFile,
-			l.logFile + ".1",
-		}
-	}
-
-	// read from all files
-	for _, file := range files {
-		if !needMore() {
-			break
-		}
-		if _, err := os.Stat(file); os.IsNotExist(err) {
-			// do nothing, file doesn't exist
-			continue
-		}
-
-		f, err := os.Open(file)
-		if err != nil {
-			log.Error("Failed to open file \"%s\": %s", file, err)
-			// try next file
-			continue
-		}
-		defer f.Close()
-
-		var d *json.Decoder
-
-		if enableGzip {
-			zr, err := gzip.NewReader(f)
-			if err != nil {
-				log.Error("Failed to create gzip reader: %s", err)
-				continue
-			}
-			defer zr.Close()
-			d = json.NewDecoder(zr)
-		} else {
-			d = json.NewDecoder(f)
-		}
-
-		i := 0
-		over := 0
-		max := 10000 * time.Second
-		var sum time.Duration
-		// entries on file are in oldest->newest order
-		// we want maxLen newest
-		for d.More() {
-			if !needMore() {
-				break
-			}
-			var entry logEntry
-			err := d.Decode(&entry)
-			if err != nil {
-				log.Error("Failed to decode: %s", err)
-				// next entry can be fine, try more
-				continue
-			}
-
-			if now.Sub(entry.Time) > timeWindow {
-				// log.Tracef("skipping entry") // debug logging
-				continue
-			}
-
-			if entry.Elapsed > max {
-				over++
-			} else {
-				sum += entry.Elapsed
-			}
-
-			i++
-			err = onEntry(&entry)
-			if err != nil {
-				return err
-			}
-		}
-		elapsed := time.Since(now)
-		var perunit time.Duration
-		var avg time.Duration
-		if i > 0 {
-			perunit = elapsed / time.Duration(i)
-			avg = sum / time.Duration(i)
-		}
-		log.Debug("file \"%s\": read %d entries in %v, %v/entry, %v over %v, %v avg", file, i, elapsed, perunit, over, max, avg)
-	}
-	return nil
-}

dnsforward/querylog_top.go

@@ -1,315 +0,0 @@
-package dnsforward
-
-import (
-	"fmt"
-	"os"
-	"path"
-	"runtime"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/AdguardTeam/golibs/log"
-	"github.com/bluele/gcache"
-	"github.com/miekg/dns"
-)
-
-type hourTop struct {
-	domains gcache.Cache
-	blocked gcache.Cache
-	clients gcache.Cache
-
-	mutex sync.RWMutex
-}
-
-func (h *hourTop) init() {
-	h.domains = gcache.New(queryLogTopSize).LRU().Build()
-	h.blocked = gcache.New(queryLogTopSize).LRU().Build()
-	h.clients = gcache.New(queryLogTopSize).LRU().Build()
-}
-
-type dayTop struct {
-	hours     []*hourTop
-	hoursLock sync.RWMutex // writelock this lock ONLY WHEN rotating or intializing hours!
-
-	loaded     bool
-	loadedLock sync.Mutex
-}
-
-func (d *dayTop) init() {
-	d.hoursWriteLock()
-	for i := 0; i < 24; i++ {
-		hour := hourTop{}
-		hour.init()
-		d.hours = append(d.hours, &hour)
-	}
-	d.hoursWriteUnlock()
-}
-
-func (d *dayTop) rotateHourlyTop() {
-	log.Printf("Rotating hourly top")
-	hour := &hourTop{}
-	hour.init()
-	d.hoursWriteLock()
-	d.hours = append([]*hourTop{hour}, d.hours...)
-	d.hours = d.hours[:24]
-	d.hoursWriteUnlock()
-}
-
-func (d *dayTop) periodicHourlyTopRotate() {
-	t := time.Hour
-	for range time.Tick(t) {
-		d.rotateHourlyTop()
-	}
-}
-
-func (h *hourTop) incrementValue(key string, cache gcache.Cache) error {
-	h.Lock()
-	defer h.Unlock()
-	ivalue, err := cache.Get(key)
-	if err == gcache.KeyNotFoundError {
-		// we just set it and we're done
-		err = cache.Set(key, 1)
-		if err != nil {
-			log.Printf("Failed to set hourly top value: %s", err)
-			return err
-		}
-		return nil
-	}
-
-	if err != nil {
-		log.Printf("gcache encountered an error during get: %s", err)
-		return err
-	}
-
-	cachedValue, ok := ivalue.(int)
-	if !ok {
-		err = fmt.Errorf("SHOULD NOT HAPPEN: gcache has non-int as value: %v", ivalue)
-		log.Println(err)
-		return err
-	}
-
-	err = cache.Set(key, cachedValue+1)
-	if err != nil {
-		log.Printf("Failed to set hourly top value: %s", err)
-		return err
-	}
-	return nil
-}
-
-func (h *hourTop) incrementDomains(key string) error {
-	return h.incrementValue(key, h.domains)
-}
-
-func (h *hourTop) incrementBlocked(key string) error {
-	return h.incrementValue(key, h.blocked)
-}
-
-func (h *hourTop) incrementClients(key string) error {
-	return h.incrementValue(key, h.clients)
-}
-
-// if does not exist -- return 0
-func (h *hourTop) lockedGetValue(key string, cache gcache.Cache) (int, error) {
-	ivalue, err := cache.Get(key)
-	if err == gcache.KeyNotFoundError {
-		return 0, nil
-	}
-
-	if err != nil {
-		log.Printf("gcache encountered an error during get: %s", err)
-		return 0, err
-	}
-
-	value, ok := ivalue.(int)
-	if !ok {
-		err := fmt.Errorf("SHOULD NOT HAPPEN: gcache has non-int as value: %v", ivalue)
-		log.Println(err)
-		return 0, err
-	}
-
-	return value, nil
-}
-
-func (h *hourTop) lockedGetDomains(key string) (int, error) {
-	return h.lockedGetValue(key, h.domains)
-}
-
-func (h *hourTop) lockedGetBlocked(key string) (int, error) {
-	return h.lockedGetValue(key, h.blocked)
-}
-
-func (h *hourTop) lockedGetClients(key string) (int, error) {
-	return h.lockedGetValue(key, h.clients)
-}
-
-func (d *dayTop) addEntry(entry *logEntry, q *dns.Msg, now time.Time) error {
-	// figure out which hour bucket it belongs to
-	hour := int(now.Sub(entry.Time).Hours())
-	if hour >= 24 {
-		log.Printf("t %v is >24 hours ago, ignoring", entry.Time)
-		return nil
-	}
-
-	// if a DNS query doesn't have questions, do nothing
-	if len(q.Question) == 0 {
-		return nil
-	}
-
-	hostname := strings.ToLower(strings.TrimSuffix(q.Question[0].Name, "."))
-
-	// if question hostname is empty, do nothing
-	if hostname == "" {
-		return nil
-	}
-
-	// get value, if not set, crate one
-	d.hoursReadLock()
-	defer d.hoursReadUnlock()
-	err := d.hours[hour].incrementDomains(hostname)
-	if err != nil {
-		log.Printf("Failed to increment value: %s", err)
-		return err
-	}
-
-	if entry.Result.IsFiltered {
-		err := d.hours[hour].incrementBlocked(hostname)
-		if err != nil {
-			log.Printf("Failed to increment value: %s", err)
-			return err
-		}
-	}
-
-	if len(entry.IP) > 0 {
-		err := d.hours[hour].incrementClients(entry.IP)
-		if err != nil {
-			log.Printf("Failed to increment value: %s", err)
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (l *queryLog) fillStatsFromQueryLog(s *stats) error {
-	now := time.Now()
-	l.runningTop.loadedWriteLock()
-	defer l.runningTop.loadedWriteUnlock()
-	if l.runningTop.loaded {
-		return nil
-	}
-	onEntry := func(entry *logEntry) error {
-		if len(entry.Question) == 0 {
-			log.Printf("entry question is absent, skipping")
-			return nil
-		}
-
-		if entry.Time.After(now) {
-			log.Printf("t %v vs %v is in the future, ignoring", entry.Time, now)
-			return nil
-		}
-
-		q := new(dns.Msg)
-		if err := q.Unpack(entry.Question); err != nil {
-			log.Printf("failed to unpack dns message question: %s", err)
-			return err
-		}
-
-		if len(q.Question) != 1 {
-			log.Printf("malformed dns message, has no questions, skipping")
-			return nil
-		}
-
-		err := l.runningTop.addEntry(entry, q, now)
-		if err != nil {
-			log.Printf("Failed to add entry to running top: %s", err)
-			return err
-		}
-
-		l.queryLogLock.Lock()
-		l.queryLogCache = append(l.queryLogCache, entry)
-		if len(l.queryLogCache) > queryLogSize {
-			toremove := len(l.queryLogCache) - queryLogSize
-			l.queryLogCache = l.queryLogCache[toremove:]
-		}
-		l.queryLogLock.Unlock()
-
-		s.incrementCounters(entry)
-		return nil
-	}
-
-	needMore := func() bool { return true }
-	err := l.genericLoader(onEntry, needMore, queryLogTimeLimit)
-	if err != nil {
-		log.Printf("Failed to load entries from querylog: %s", err)
-		return err
-	}
-
-	l.runningTop.loaded = true
-	return nil
-}
-
-// StatsTop represents top stat charts
-type StatsTop struct {
-	Domains map[string]int // Domains - top requested domains
-	Blocked map[string]int // Blocked - top blocked domains
-	Clients map[string]int // Clients - top DNS clients
-}
-
-// getStatsTop returns the current top stats
-func (d *dayTop) getStatsTop() *StatsTop {
-	s := &StatsTop{
-		Domains: map[string]int{},
-		Blocked: map[string]int{},
-		Clients: map[string]int{},
-	}
-
-	do := func(keys []interface{}, getter func(key string) (int, error), result map[string]int) {
-		for _, ikey := range keys {
-			key, ok := ikey.(string)
-			if !ok {
-				continue
-			}
-			value, err := getter(key)
-			if err != nil {
-				log.Printf("Failed to get top domains value for %v: %s", key, err)
-				return
-			}
-			result[key] += value
-		}
-	}
-
-	d.hoursReadLock()
-	for hour := 0; hour < 24; hour++ {
-		d.hours[hour].RLock()
-		do(d.hours[hour].domains.Keys(false), d.hours[hour].lockedGetDomains, s.Domains)
-		do(d.hours[hour].blocked.Keys(false), d.hours[hour].lockedGetBlocked, s.Blocked)
-		do(d.hours[hour].clients.Keys(false), d.hours[hour].lockedGetClients, s.Clients)
-		d.hours[hour].RUnlock()
-	}
-	d.hoursReadUnlock()
-
-	return s
-}
-
-func (d *dayTop) hoursWriteLock()    { tracelock(); d.hoursLock.Lock() }
-func (d *dayTop) hoursWriteUnlock()  { tracelock(); d.hoursLock.Unlock() }
-func (d *dayTop) hoursReadLock()     { tracelock(); d.hoursLock.RLock() }
-func (d *dayTop) hoursReadUnlock()   { tracelock(); d.hoursLock.RUnlock() }
-func (d *dayTop) loadedWriteLock()   { tracelock(); d.loadedLock.Lock() }
-func (d *dayTop) loadedWriteUnlock() { tracelock(); d.loadedLock.Unlock() }
-
-func (h *hourTop) Lock()    { tracelock(); h.mutex.Lock() }
-func (h *hourTop) RLock()   { tracelock(); h.mutex.RLock() }
-func (h *hourTop) RUnlock() { tracelock(); h.mutex.RUnlock() }
-func (h *hourTop) Unlock()  { tracelock(); h.mutex.Unlock() }
-
-func tracelock() {
-	if false { // not commented out to make code checked during compilation
-		pc := make([]uintptr, 10) // at least 1 entry needed
-		runtime.Callers(2, pc)
-		f := path.Base(runtime.FuncForPC(pc[1]).Name())
-		lockf := path.Base(runtime.FuncForPC(pc[0]).Name())
-		fmt.Fprintf(os.Stderr, "%s(): %s\n", f, lockf)
-	}
-}

dnsforward/stats.go

@@ -1,355 +0,0 @@
-package dnsforward
-
-import (
-	"fmt"
-	"sync"
-	"time"
-
-	"github.com/AdguardTeam/AdGuardHome/dnsfilter"
-)
-
-// how far back to keep the stats
-const statsHistoryElements = 60 + 1 // +1 for calculating delta
-
-// entries for single time period (for example all per-second entries)
-type statsEntries map[string][statsHistoryElements]float64
-
-// each periodic stat is a map of arrays
-type periodicStats struct {
-	entries    statsEntries
-	period     time.Duration // how long one entry lasts
-	lastRotate time.Time     // last time this data was rotated
-
-	sync.RWMutex
-}
-
-// stats is the DNS server historical statistics
-type stats struct {
-	perSecond periodicStats
-	perMinute periodicStats
-	perHour   periodicStats
-	perDay    periodicStats
-
-	requests             *counter   // total number of requests
-	filtered             *counter   // total number of filtered requests
-	filteredLists        *counter   // total number of requests blocked by filter lists
-	filteredSafebrowsing *counter   // total number of requests blocked by safebrowsing
-	filteredParental     *counter   // total number of requests blocked by the parental control
-	whitelisted          *counter   // total number of requests whitelisted by filter lists
-	safesearch           *counter   // total number of requests for which safe search rules were applied
-	errorsTotal          *counter   // total number of errors
-	elapsedTime          *histogram // requests duration histogram
-}
-
-// initializes an empty stats structure
-func newStats() *stats {
-	s := &stats{
-		requests:             newDNSCounter("requests_total"),
-		filtered:             newDNSCounter("filtered_total"),
-		filteredLists:        newDNSCounter("filtered_lists_total"),
-		filteredSafebrowsing: newDNSCounter("filtered_safebrowsing_total"),
-		filteredParental:     newDNSCounter("filtered_parental_total"),
-		whitelisted:          newDNSCounter("whitelisted_total"),
-		safesearch:           newDNSCounter("safesearch_total"),
-		errorsTotal:          newDNSCounter("errors_total"),
-		elapsedTime:          newDNSHistogram("request_duration"),
-	}
-
-	// Initializes empty per-sec/minute/hour/day stats
-	s.purgeStats()
-	return s
-}
-
-func initPeriodicStats(periodic *periodicStats, period time.Duration) {
-	periodic.Lock()
-	periodic.entries = statsEntries{}
-	periodic.lastRotate = time.Now()
-	periodic.period = period
-	periodic.Unlock()
-}
-
-func (s *stats) purgeStats() {
-	initPeriodicStats(&s.perSecond, time.Second)
-	initPeriodicStats(&s.perMinute, time.Minute)
-	initPeriodicStats(&s.perHour, time.Hour)
-	initPeriodicStats(&s.perDay, time.Hour*24)
-}
-
-func (p *periodicStats) Inc(name string, when time.Time) {
-	// calculate how many periods ago this happened
-	elapsed := int64(time.Since(when) / p.period)
-	// log.Tracef("%s: %v as %v -> [%v]", name, time.Since(when), p.period, elapsed)
-	if elapsed >= statsHistoryElements {
-		return // outside of our timeframe
-	}
-	p.Lock()
-	currentValues := p.entries[name]
-	currentValues[elapsed]++
-	p.entries[name] = currentValues
-	p.Unlock()
-}
-
-func (p *periodicStats) Observe(name string, when time.Time, value float64) {
-	// calculate how many periods ago this happened
-	elapsed := int64(time.Since(when) / p.period)
-	// log.Tracef("%s: %v as %v -> [%v]", name, time.Since(when), p.period, elapsed)
-	if elapsed >= statsHistoryElements {
-		return // outside of our timeframe
-	}
-	p.Lock()
-	{
-		countname := name + "_count"
-		currentValues := p.entries[countname]
-		v := currentValues[elapsed]
-		// log.Tracef("Will change p.entries[%s][%d] from %v to %v", countname, elapsed, value, value+1)
-		v++
-		currentValues[elapsed] = v
-		p.entries[countname] = currentValues
-	}
-	{
-		totalname := name + "_sum"
-		currentValues := p.entries[totalname]
-		currentValues[elapsed] += value
-		p.entries[totalname] = currentValues
-	}
-	p.Unlock()
-}
-
-func (p *periodicStats) statsRotate(now time.Time) {
-	p.Lock()
-	rotations := int64(now.Sub(p.lastRotate) / p.period)
-	if rotations > statsHistoryElements {
-		rotations = statsHistoryElements
-	}
-	// calculate how many times we should rotate
-	for r := int64(0); r < rotations; r++ {
-		for key, values := range p.entries {
-			newValues := [statsHistoryElements]float64{}
-			for i := 1; i < len(values); i++ {
-				newValues[i] = values[i-1]
-			}
-			p.entries[key] = newValues
-		}
-	}
-	if rotations > 0 {
-		p.lastRotate = now
-	}
-	p.Unlock()
-}
-
-func (s *stats) statsRotator() {
-	for range time.Tick(time.Second) {
-		now := time.Now()
-		s.perSecond.statsRotate(now)
-		s.perMinute.statsRotate(now)
-		s.perHour.statsRotate(now)
-		s.perDay.statsRotate(now)
-	}
-}
-
-// counter that wraps around prometheus Counter but also adds to periodic stats
-type counter struct {
-	name  string // used as key in periodic stats
-	value int64
-
-	sync.Mutex
-}
-
-func newDNSCounter(name string) *counter {
-	// log.Tracef("called")
-	return &counter{
-		name: name,
-	}
-}
-
-func (s *stats) incWithTime(c *counter, when time.Time) {
-	s.perSecond.Inc(c.name, when)
-	s.perMinute.Inc(c.name, when)
-	s.perHour.Inc(c.name, when)
-	s.perDay.Inc(c.name, when)
-	c.Lock()
-	c.value++
-	c.Unlock()
-}
-
-type histogram struct {
-	name  string // used as key in periodic stats
-	count int64
-	total float64
-
-	sync.Mutex
-}
-
-func newDNSHistogram(name string) *histogram {
-	return &histogram{
-		name: name,
-	}
-}
-
-func (s *stats) observeWithTime(h *histogram, value float64, when time.Time) {
-	s.perSecond.Observe(h.name, when, value)
-	s.perMinute.Observe(h.name, when, value)
-	s.perHour.Observe(h.name, when, value)
-	s.perDay.Observe(h.name, when, value)
-	h.Lock()
-	h.count++
-	h.total += value
-	h.Unlock()
-}
-
-// -----
-// stats
-// -----
-func (s *stats) incrementCounters(entry *logEntry) {
-	s.incWithTime(s.requests, entry.Time)
-	if entry.Result.IsFiltered {
-		s.incWithTime(s.filtered, entry.Time)
-	}
-
-	switch entry.Result.Reason {
-	case dnsfilter.NotFilteredWhiteList:
-		s.incWithTime(s.whitelisted, entry.Time)
-	case dnsfilter.NotFilteredError:
-		s.incWithTime(s.errorsTotal, entry.Time)
-	case dnsfilter.FilteredBlackList:
-		s.incWithTime(s.filteredLists, entry.Time)
-	case dnsfilter.FilteredSafeBrowsing:
-		s.incWithTime(s.filteredSafebrowsing, entry.Time)
-	case dnsfilter.FilteredParental:
-		s.incWithTime(s.filteredParental, entry.Time)
-	case dnsfilter.FilteredInvalid:
-		// do nothing
-	case dnsfilter.FilteredSafeSearch:
-		s.incWithTime(s.safesearch, entry.Time)
-	}
-	s.observeWithTime(s.elapsedTime, entry.Elapsed.Seconds(), entry.Time)
-}
-
-// getAggregatedStats returns aggregated stats data for the 24 hours
-func (s *stats) getAggregatedStats() map[string]interface{} {
-	const numHours = 24
-	historical := s.generateMapFromStats(&s.perHour, 0, numHours)
-	// sum them up
-	summed := map[string]interface{}{}
-	for key, values := range historical {
-		summedValue := 0.0
-		floats, ok := values.([]float64)
-		if !ok {
-			continue
-		}
-		for _, v := range floats {
-			summedValue += v
-		}
-		summed[key] = summedValue
-	}
-	// don't forget to divide by number of elements in returned slice
-	if val, ok := summed["avg_processing_time"]; ok {
-		if flval, flok := val.(float64); flok {
-			flval /= numHours
-			summed["avg_processing_time"] = flval
-		}
-	}
-
-	summed["stats_period"] = "24 hours"
-	return summed
-}
-
-func (s *stats) generateMapFromStats(stats *periodicStats, start int, end int) map[string]interface{} {
-	stats.RLock()
-	defer stats.RUnlock()
-
-	// clamp
-	start = clamp(start, 0, statsHistoryElements)
-	end = clamp(end, 0, statsHistoryElements)
-
-	avgProcessingTime := make([]float64, 0)
-
-	count := getReversedSlice(stats.entries[s.elapsedTime.name+"_count"], start, end)
-	sum := getReversedSlice(stats.entries[s.elapsedTime.name+"_sum"], start, end)
-	for i := 0; i < len(count); i++ {
-		var avg float64
-		if count[i] != 0 {
-			avg = sum[i] / count[i]
-			avg *= 1000
-		}
-		avgProcessingTime = append(avgProcessingTime, avg)
-	}
-
-	result := map[string]interface{}{
-		"dns_queries":           getReversedSlice(stats.entries[s.requests.name], start, end),
-		"blocked_filtering":     getReversedSlice(stats.entries[s.filtered.name], start, end),
-		"replaced_safebrowsing": getReversedSlice(stats.entries[s.filteredSafebrowsing.name], start, end),
-		"replaced_safesearch":   getReversedSlice(stats.entries[s.safesearch.name], start, end),
-		"replaced_parental":     getReversedSlice(stats.entries[s.filteredParental.name], start, end),
-		"avg_processing_time":   avgProcessingTime,
-	}
-	return result
-}
-
-// getStatsHistory gets stats history aggregated by the specified time unit
-// timeUnit is either time.Second, time.Minute, time.Hour, or 24*time.Hour
-// start is start of the time range
-// end is end of the time range
-// returns nil if time unit is not supported
-func (s *stats) getStatsHistory(timeUnit time.Duration, startTime time.Time, endTime time.Time) (map[string]interface{}, error) {
-	var stats *periodicStats
-
-	switch timeUnit {
-	case time.Second:
-		stats = &s.perSecond
-	case time.Minute:
-		stats = &s.perMinute
-	case time.Hour:
-		stats = &s.perHour
-	case 24 * time.Hour:
-		stats = &s.perDay
-	}
-
-	if stats == nil {
-		return nil, fmt.Errorf("unsupported time unit: %v", timeUnit)
-	}
-
-	now := time.Now()
-
-	// check if start and time times are within supported time range
-	timeRange := timeUnit * statsHistoryElements
-	if startTime.Add(timeRange).Before(now) {
-		return nil, fmt.Errorf("start_time parameter is outside of supported range: %s", startTime.String())
-	}
-	if endTime.Add(timeRange).Before(now) {
-		return nil, fmt.Errorf("end_time parameter is outside of supported range: %s", startTime.String())
-	}
-
-	// calculate start and end of our array
-	// basically it's how many hours/minutes/etc have passed since now
-	start := int(now.Sub(endTime) / timeUnit)
-	end := int(now.Sub(startTime) / timeUnit)
-
-	// swap them around if they're inverted
-	if start > end {
-		start, end = end, start
-	}
-
-	return s.generateMapFromStats(stats, start, end), nil
-}
-
-func clamp(value, low, high int) int {
-	if value < low {
-		return low
-	}
-	if value > high {
-		return high
-	}
-	return value
-}
-
-// --------------------------
-// helper functions for stats
-// --------------------------
-func getReversedSlice(input [statsHistoryElements]float64, start int, end int) []float64 {
-	output := make([]float64, 0)
-	for i := start; i <= end; i++ {
-		output = append([]float64{input[i]}, output...)
-	}
-	return output
-}

go.mod

@@ -7,7 +7,9 @@ require (
 	github.com/AdguardTeam/golibs v0.2.1
 	github.com/AdguardTeam/urlfilter v0.5.0
 	github.com/NYTimes/gziphandler v1.1.1
+	github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf
 	github.com/bluele/gcache v0.0.0-20190518031135-bc40bd653833
+	github.com/etcd-io/bbolt v1.3.3
 	github.com/go-test/deep v1.0.1
 	github.com/gobuffalo/packr v1.19.0
 	github.com/joomcode/errorx v0.8.0
@@ -17,8 +19,8 @@ require (
 	github.com/miekg/dns v1.1.8
 	github.com/sparrc/go-ping v0.0.0-20181106165434-ef3ab45e41b0
 	github.com/stretchr/testify v1.4.0
+	go.etcd.io/bbolt v1.3.3 // indirect
 	golang.org/x/net v0.0.0-20190620200207-3b0461eec859
 	golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0
-	gopkg.in/asaskevich/govalidator.v4 v4.0.0-20160518190739-766470278477
 	gopkg.in/yaml.v2 v2.2.2
 )

go.sum

@@ -28,6 +28,7 @@ github.com/bluele/gcache v0.0.0-20190518031135-bc40bd653833/go.mod h1:8c4/i2Vlov
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/etcd-io/bbolt v1.3.3/go.mod h1:ZF2nL25h33cCyBtcyWeZ2/I3HQOfTP+0PIEvHjkjCrw=
 github.com/go-ole/go-ole v1.2.4 h1:nNBDSCOigTSiarFpYE9J/KtEA1IOW4CNeqT9TQDqCxI=
 github.com/go-ole/go-ole v1.2.4/go.mod h1:XCwSNxSkXRo4vlyPy93sltvi/qJq0jqQhjqQNIwKuxM=
 github.com/go-test/deep v1.0.1 h1:UQhStjbkDClarlmv0am7OXXO4/GaPdCGiUiMTvi28sg=
@@ -80,6 +81,7 @@ github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9 h1:mKdxBk7AujPs8kU4m80U72y/zjbZ3UcXC7dClwKbUI0=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2 h1:VklqNMn3ovrHsnt90PveolxSbWFaJdECFbxSq0Mqo2M=
@@ -112,8 +114,6 @@ golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-gopkg.in/asaskevich/govalidator.v4 v4.0.0-20160518190739-766470278477 h1:5xUJw+lg4zao9W4HIDzlFbMYgSgtvNVHh00MEHvbGpQ=
-gopkg.in/asaskevich/govalidator.v4 v4.0.0-20160518190739-766470278477/go.mod h1:QDV1vrFSrowdoOba0UM8VJPUZONT7dnfdLsM+GG53Z8=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

home/config.go

@@ -12,6 +12,7 @@ import (
 	"github.com/AdguardTeam/AdGuardHome/dhcpd"
 	"github.com/AdguardTeam/AdGuardHome/dnsfilter"
 	"github.com/AdguardTeam/AdGuardHome/dnsforward"
+	"github.com/AdguardTeam/AdGuardHome/stats"
 	"github.com/AdguardTeam/golibs/file"
 	"github.com/AdguardTeam/golibs/log"
 	yaml "gopkg.in/yaml.v2"
@@ -68,6 +69,7 @@ type configuration struct {
 	controlLock      sync.Mutex
 	transport        *http.Transport
 	client           *http.Client
+	stats            stats.Stats
 
 	// cached version.json to avoid hammering github.io for each page reload
 	versionCheckJSON     []byte
@@ -107,6 +109,9 @@ type dnsConfig struct {
 	BindHost string `yaml:"bind_host"`
 	Port     int    `yaml:"port"`
 
+	// time interval for statistics (in days)
+	StatsInterval uint `yaml:"statistics_interval"`
+
 	dnsforward.FilteringConfig `yaml:",inline"`
 
 	UpstreamDNS []string `yaml:"upstream_dns"`
@@ -163,6 +168,7 @@ var config = configuration{
 	DNS: dnsConfig{
 		BindHost:      "0.0.0.0",
 		Port:          53,
+		StatsInterval: 1,
 		FilteringConfig: dnsforward.FilteringConfig{
 			ProtectionEnabled:  true,       // whether or not use any of dnsfilter features
 			FilteringEnabled:   true,       // whether or not use filter lists
@@ -264,6 +270,10 @@ func parseConfig() error {
 		return err
 	}
 
+	if !checkStatsInterval(config.DNS.StatsInterval) {
+		config.DNS.StatsInterval = 1
+	}
+
 	for _, cy := range config.Clients {
 		cli := Client{
 			Name:                cy.Name,

home/control.go

@@ -1,12 +1,10 @@
 package home
 
 import (
-	"bytes"
 	"encoding/json"
 	"fmt"
 	"net"
 	"net/http"
-	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -177,149 +175,6 @@ func handleQueryLog(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func handleStatsTop(w http.ResponseWriter, r *http.Request) {
-	s := config.dnsServer.GetStatsTop()
-
-	// use manual json marshalling because we want maps to be sorted by value
-	statsJSON := bytes.Buffer{}
-	statsJSON.WriteString("{\n")
-
-	gen := func(json *bytes.Buffer, name string, top map[string]int, addComma bool) {
-		json.WriteString("  ")
-		json.WriteString(fmt.Sprintf("%q", name))
-		json.WriteString(": {\n")
-		sorted := sortByValue(top)
-		// no more than 50 entries
-		if len(sorted) > 50 {
-			sorted = sorted[:50]
-		}
-		for i, key := range sorted {
-			json.WriteString("    ")
-			json.WriteString(fmt.Sprintf("%q", key))
-			json.WriteString(": ")
-			json.WriteString(strconv.Itoa(top[key]))
-			if i+1 != len(sorted) {
-				json.WriteByte(',')
-			}
-			json.WriteByte('\n')
-		}
-		json.WriteString("  }")
-		if addComma {
-			json.WriteByte(',')
-		}
-		json.WriteByte('\n')
-	}
-	gen(&statsJSON, "top_queried_domains", s.Domains, true)
-	gen(&statsJSON, "top_blocked_domains", s.Blocked, true)
-	gen(&statsJSON, "top_clients", s.Clients, true)
-	statsJSON.WriteString("  \"stats_period\": \"24 hours\"\n")
-	statsJSON.WriteString("}\n")
-
-	w.Header().Set("Content-Type", "application/json")
-	_, err := w.Write(statsJSON.Bytes())
-	if err != nil {
-		httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
-	}
-}
-
-// handleStatsReset resets the stats caches
-func handleStatsReset(w http.ResponseWriter, r *http.Request) {
-	config.dnsServer.PurgeStats()
-	_, err := fmt.Fprintf(w, "OK\n")
-	if err != nil {
-		httpError(w, http.StatusInternalServerError, "Couldn't write body: %s", err)
-	}
-}
-
-// handleStats returns aggregated stats data for the 24 hours
-func handleStats(w http.ResponseWriter, r *http.Request) {
-	summed := config.dnsServer.GetAggregatedStats()
-
-	statsJSON, err := json.Marshal(summed)
-	if err != nil {
-		httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
-		return
-	}
-	w.Header().Set("Content-Type", "application/json")
-	_, err = w.Write(statsJSON)
-	if err != nil {
-		httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
-		return
-	}
-}
-
-// HandleStatsHistory returns historical stats data for the 24 hours
-func handleStatsHistory(w http.ResponseWriter, r *http.Request) {
-	// handle time unit and prepare our time window size
-	timeUnitString := r.URL.Query().Get("time_unit")
-	var timeUnit time.Duration
-	switch timeUnitString {
-	case "seconds":
-		timeUnit = time.Second
-	case "minutes":
-		timeUnit = time.Minute
-	case "hours":
-		timeUnit = time.Hour
-	case "days":
-		timeUnit = time.Hour * 24
-	default:
-		http.Error(w, "Must specify valid time_unit parameter", http.StatusBadRequest)
-		return
-	}
-
-	// parse start and end time
-	startTime, err := time.Parse(time.RFC3339, r.URL.Query().Get("start_time"))
-	if err != nil {
-		httpError(w, http.StatusBadRequest, "Must specify valid start_time parameter: %s", err)
-		return
-	}
-	endTime, err := time.Parse(time.RFC3339, r.URL.Query().Get("end_time"))
-	if err != nil {
-		httpError(w, http.StatusBadRequest, "Must specify valid end_time parameter: %s", err)
-		return
-	}
-
-	data, err := config.dnsServer.GetStatsHistory(timeUnit, startTime, endTime)
-	if err != nil {
-		httpError(w, http.StatusBadRequest, "Cannot get stats history: %s", err)
-		return
-	}
-
-	statsJSON, err := json.Marshal(data)
-	if err != nil {
-		httpError(w, http.StatusInternalServerError, "Unable to marshal status json: %s", err)
-		return
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	_, err = w.Write(statsJSON)
-	if err != nil {
-		httpError(w, http.StatusInternalServerError, "Unable to write response json: %s", err)
-		return
-	}
-}
-
-// sortByValue is a helper function for querylog API
-func sortByValue(m map[string]int) []string {
-	type kv struct {
-		k string
-		v int
-	}
-	var ss []kv
-	for k, v := range m {
-		ss = append(ss, kv{k, v})
-	}
-	sort.Slice(ss, func(l, r int) bool {
-		return ss[l].v > ss[r].v
-	})
-
-	sorted := []string{}
-	for _, v := range ss {
-		sorted = append(sorted, v.k)
-	}
-	return sorted
-}
-
 // -----------------------
 // upstreams configuration
 // -----------------------
@@ -722,10 +577,6 @@ func registerControlHandlers() {
 	httpRegister(http.MethodPost, "/control/test_upstream_dns", handleTestUpstreamDNS)
 	httpRegister(http.MethodPost, "/control/i18n/change_language", handleI18nChangeLanguage)
 	httpRegister(http.MethodGet, "/control/i18n/current_language", handleI18nCurrentLanguage)
-	httpRegister(http.MethodGet, "/control/stats_top", handleStatsTop)
-	httpRegister(http.MethodGet, "/control/stats", handleStats)
-	httpRegister(http.MethodGet, "/control/stats_history", handleStatsHistory)
-	httpRegister(http.MethodPost, "/control/stats_reset", handleStatsReset)
 	http.HandleFunc("/control/version.json", postInstall(optionalAuth(handleGetVersionJSON)))
 	httpRegister(http.MethodPost, "/control/update", handleUpdate)
 	httpRegister(http.MethodPost, "/control/filtering/enable", handleFilteringEnable)
@@ -760,6 +611,7 @@ func registerControlHandlers() {
 	RegisterClientsHandlers()
 	registerRewritesHandlers()
 	RegisterBlockedServicesHandlers()
+	RegisterStatsHandlers()
 
 	http.HandleFunc("/dns-query", postInstall(handleDOH))
 }

home/control_stats.go

@@ -0,0 +1,92 @@
+package home
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/AdguardTeam/AdGuardHome/stats"
+	"github.com/AdguardTeam/golibs/log"
+)
+
+type statsConfig struct {
+	Interval uint `json:"interval"`
+}
+
+// Get stats configuration
+func handleStatsInfo(w http.ResponseWriter, r *http.Request) {
+	resp := statsConfig{}
+	resp.Interval = config.DNS.StatsInterval
+
+	jsonVal, err := json.Marshal(resp)
+	if err != nil {
+		httpError(w, http.StatusInternalServerError, "json encode: %s", err)
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	_, err = w.Write(jsonVal)
+	if err != nil {
+		httpError(w, http.StatusInternalServerError, "http write: %s", err)
+	}
+}
+
+// Set stats configuration
+func handleStatsConfig(w http.ResponseWriter, r *http.Request) {
+	reqData := statsConfig{}
+	err := json.NewDecoder(r.Body).Decode(&reqData)
+	if err != nil {
+		httpError(w, http.StatusBadRequest, "json decode: %s", err)
+		return
+	}
+
+	if !checkStatsInterval(reqData.Interval) {
+		httpError(w, http.StatusBadRequest, "Unsupported interval")
+		return
+	}
+
+	config.DNS.StatsInterval = reqData.Interval
+	config.stats.Configure(int(config.DNS.StatsInterval))
+
+	returnOK(w)
+}
+
+// handleStats returns aggregated stats data
+func handleStats(w http.ResponseWriter, r *http.Request) {
+	units := stats.Hours
+	if config.DNS.StatsInterval > 7 {
+		units = stats.Days
+	}
+	counter := log.StartTimer()
+	d := config.stats.GetData(units)
+	counter.LogElapsed("Stats: prepared data")
+
+	if d == nil {
+		httpError(w, http.StatusInternalServerError, "Couldn't get statistics data")
+		return
+	}
+
+	data, err := json.Marshal(d)
+	if err != nil {
+		httpError(w, http.StatusInternalServerError, "json encode: %s", err)
+		return
+	}
+
+	w.Write(data)
+}
+
+// handleStatsReset resets the stats
+func handleStatsReset(w http.ResponseWriter, r *http.Request) {
+	config.stats.Clear()
+	returnOK(w)
+}
+
+// RegisterStatsHandlers - register handlers
+func RegisterStatsHandlers() {
+	httpRegister(http.MethodGet, "/control/stats", handleStats)
+	httpRegister(http.MethodPost, "/control/stats_reset", handleStatsReset)
+	httpRegister(http.MethodPost, "/control/stats_config", handleStatsConfig)
+	httpRegister(http.MethodGet, "/control/stats_info", handleStatsInfo)
+}
+
+func checkStatsInterval(i uint) bool {
+	return i == 1 || i == 7 || i == 30 || i == 90
+}

home/dns.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/AdguardTeam/AdGuardHome/dnsfilter"
 	"github.com/AdguardTeam/AdGuardHome/dnsforward"
+	"github.com/AdguardTeam/AdGuardHome/stats"
 	"github.com/AdguardTeam/dnsproxy/proxy"
 	"github.com/AdguardTeam/dnsproxy/upstream"
 	"github.com/AdguardTeam/golibs/log"
@@ -33,7 +34,11 @@ func initDNSServer(baseDir string) {
 		log.Fatalf("Cannot create DNS data dir at %s: %s", baseDir, err)
 	}
 
-	config.dnsServer = dnsforward.NewServer(baseDir)
+	config.stats = stats.New("./data/stats.db", int(config.DNS.StatsInterval), nil)
+	if config.stats == nil {
+		log.Fatal("config.stats == nil")
+	}
+	config.dnsServer = dnsforward.NewServer(baseDir, config.stats)
 
 	initRDNS()
 }
@@ -152,11 +157,6 @@ func startDNSServer() error {
 		return errorx.Decorate(err, "Couldn't start forwarding DNS server")
 	}
 
-	top := config.dnsServer.GetStatsTop()
-	for k := range top.Clients {
-		beginAsyncRDNS(k)
-	}
-
 	return nil
 }
 
@@ -183,5 +183,7 @@ func stopDNSServer() error {
 		return errorx.Decorate(err, "Couldn't stop forwarding DNS server")
 	}
 
+	config.stats.Close()
+
 	return nil
 }

openapi/openapi.yaml

@@ -214,18 +214,6 @@ paths:
     # General statistics methods
     # --------------------------------------------------
 
-    /stats_top:
-        get:
-            tags:
-                - stats
-            operationId: statusTop
-            summary: 'Get DNS server top client, domain and blocked statistics'
-            responses:
-                200:
-                    description: OK
-                    schema:
-                        $ref: "#/definitions/StatsTop"
-
     /stats:
         get:
             tags:
@@ -234,46 +222,10 @@ paths:
             summary: 'Get DNS server statistics'
             responses:
                 200:
-                    description: 'Returns general statistics for the last 24 hours'
+                    description: 'Returns statistics data'
                     schema:
                         $ref: "#/definitions/Stats"
 
-    /stats_history:
-        get:
-            tags:
-                - stats
-            operationId: stats_history
-            summary: 'Get historical DNS server statistics for the last 24 hours'
-            parameters:
-                -
-                    name: start_time
-                    in: query
-                    type: string
-                    description: 'Start time in ISO8601 (example: `2018-05-04T17:55:33+00:00`)'
-                    required: true
-                -
-                    name: end_time
-                    in: query
-                    type: string
-                    description: 'End time in ISO8601 (example: `2018-05-04T17:55:33+00:00`)'
-                    required: true
-                -
-                    name: time_unit
-                    in: query
-                    type: string
-                    description: 'Time unit (`minutes` or `hours`)'
-                    required: true
-                    enum:
-                        - minutes
-                        - hours
-            responses:
-                501:
-                    description: 'Requested time window is outside of supported range. It will be supported later, but not now.'
-                200:
-                    description: 'Returns historical stats for the specified time interval.'
-                    schema:
-                        $ref: '#/definitions/StatsHistory'
-
     /stats_reset:
         post:
             tags:
@@ -284,6 +236,34 @@ paths:
                 200:
                     description: OK
 
+    /stats_info:
+        get:
+            tags:
+                - stats
+            operationId: statsInfo
+            summary: 'Get statistics parameters'
+            responses:
+                200:
+                    schema:
+                        $ref: "#/definitions/StatsConfig"
+
+    /stats_config:
+        post:
+            tags:
+                - stats
+            operationId: statsConfig
+            summary: "Set statistics parameters"
+            consumes:
+                - application/json
+            parameters:
+                - in: "body"
+                  name: "body"
+                  schema:
+                      $ref: "#/definitions/StatsConfig"
+            responses:
+                200:
+                    description: OK
+
     # --------------------------------------------------
     # TLS server methods
     # --------------------------------------------------
@@ -1103,28 +1083,29 @@ definitions:
                 type: "boolean"
     Stats:
         type: "object"
-        description: "General server stats for the last 24 hours"
+        description: "Server statistics data"
-        required:
-            - "dns_queries"
-            - "blocked_filtering"
-            - "replaced_safebrowsing"
-            - "replaced_parental"
-            - "replaced_safesearch"
-            - "avg_processing_time"
         properties:
-            dns_queries:
+            time_units:
+                type: "string"
+                description: "Time units (hours | days)"
+                example: "hours"
+            num_dns_queries:
                 type: "integer"
                 description: "Total number of DNS queries"
                 example: 123
-            blocked_filtering:
+            num_blocked_filtering:
                 type: "integer"
                 description: "Number of requests blocked by filtering rules"
                 example: 50
-            replaced_safebrowsing:
+            num_replaced_safebrowsing:
                 type: "integer"
-                description: "Number of requests blocked by the safebrowsing module"
+                description: "Number of requests blocked by safebrowsing module"
                 example: 5
-            replaced_parental:
+            num_replaced_safesearch:
+                type: "integer"
+                description: "Number of requests blocked by safesearch module"
+                example: 5
+            num_replaced_parental:
                 type: "integer"
                 description: "Number of blocked adult websites"
                 example: 15
@@ -1133,110 +1114,43 @@ definitions:
                 format: "float"
                 description: "Average time in milliseconds on processing a DNS"
                 example: 0.34
-    StatsTop:
-        type: "object"
-        description: "Server stats top charts"
-        required:
-            - "top_queried_domains"
-            - "top_clients"
-            - "top_blocked_domains"
-        properties:
             top_queried_domains:
                 type: "array"
                 items:
                     type: "object"
-                example:
-                    example.org: 12312
-                    example.com: 321
-                    example.net: 5555
             top_clients:
                 type: "array"
                 items:
                     type: "object"
-                example:
-                    127.0.0.1: 12312
-                    192.168.0.1: 13211
-                    192.168.0.3: 13211
             top_blocked_domains:
                 type: "array"
                 items:
                     type: "object"
-                example:
-                    example.org: 12312
-                    example.com: 321
-                    example.net: 5555
-    StatsHistory:
-        type: "object"
-        description: "Historical stats of the DNS server. Example below is for 5 minutes. Values are from oldest to newest."
-        required:
-            - "dns_queries"
-            - "blocked_filtering"
-            - "replaced_safebrowsing"
-            - "replaced_parental"
-            - "replaced_safesearch"
-            - "avg_processing_time"
-        properties:
             dns_queries:
                 type: "array"
                 items:
                     type: "integer"
-                example:
-                    - 1201
-                    - 1501
-                    - 1251
-                    - 1231
-                    - 120
             blocked_filtering:
                 type: "array"
                 items:
                     type: "integer"
-                example:
-                    - 421
-                    - 124
-                    - 5
-                    - 12
-                    - 43
             replaced_safebrowsing:
                 type: "array"
                 items:
                     type: "integer"
-                example:
-                    - 1
-                    - 0
-                    - 5
-                    - 0
-                    - 0
             replaced_parental:
                 type: "array"
                 items:
                     type: "integer"
-                example:
+
-                    - 120
+    StatsConfig:
-                    - 10
+        type: "object"
-                    - 5
+        description: "Statistics configuration"
-                    - 12
+        properties:
-                    - 1
+            interval:
-            replaced_safesearch:
-                type: "array"
-                items:
                 type: "integer"
-                example:
+                description: "Time period to keep data (1 | 7 | 30 | 90)"
-                    - 1
+
-                    - 0
-                    - 0
-                    - 0
-                    - 5
-            avg_processing_time:
-                type: "array"
-                items:
-                    type: "number"
-                    format: "float"
-                example:
-                    - 1.25
-                    - 5.12
-                    - 4.12
-                    - 123.12
-                    - 0.12
     DhcpConfig:
         type: "object"
         description: "Built-in DHCP server configuration"

stats/stats.go

@@ -0,0 +1,68 @@
+// Module for managing statistics for DNS filtering server
+
+package stats
+
+import (
+	"net"
+)
+
+type unitIDCallback func() int
+
+// New - create object
+// filename: DB file name
+// limit: time limit (in days)
+// unitID: user function to get the current unit ID.  If nil, the current time hour is used.
+func New(filename string, limit int, unitID unitIDCallback) Stats {
+	return createObject(filename, limit, unitID)
+}
+
+// Stats - main interface
+type Stats interface {
+	// Close object.
+	// This function is not thread safe
+	//  (can't be called in parallel with any other function of this interface).
+	Close()
+
+	// Set new configuration at runtime.
+	// limit: time limit (in days)
+	Configure(limit int)
+
+	// Reset counters and clear database
+	Clear()
+
+	// Update counters
+	Update(e Entry)
+
+	// Get data
+	GetData(timeUnit TimeUnit) map[string]interface{}
+}
+
+// TimeUnit - time unit
+type TimeUnit int
+
+// Supported time units
+const (
+	Hours TimeUnit = iota
+	Days
+)
+
+// Result of DNS request processing
+type Result int
+
+// Supported result values
+const (
+	RNotFiltered Result = iota + 1
+	RFiltered
+	RSafeBrowsing
+	RSafeSearch
+	RParental
+	rLast
+)
+
+// Entry - data to add
+type Entry struct {
+	Domain string
+	Client net.IP
+	Result Result
+	Time   uint // processing time (msec)
+}

stats/stats_test.go

@@ -0,0 +1,115 @@
+package stats
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func UIntArrayEquals(a []uint, b []uint) bool {
+	if len(a) != len(b) {
+		return false
+	}
+
+	for i := range a {
+		if a[i] != b[i] {
+			return false
+		}
+	}
+
+	return true
+}
+
+func TestStats(t *testing.T) {
+	s := New("./stats.db", 1, nil)
+
+	e := Entry{}
+
+	e.Domain = "domain"
+	e.Client = net.ParseIP("127.0.0.1")
+	e.Result = RFiltered
+	e.Time = 123456
+	s.Update(e)
+
+	e.Domain = "domain"
+	e.Client = net.ParseIP("127.0.0.1")
+	e.Result = RNotFiltered
+	e.Time = 123456
+	s.Update(e)
+
+	d := s.GetData(Hours)
+	a := []uint{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2}
+	assert.True(t, UIntArrayEquals(d["dns_queries"].([]uint), a))
+
+	a = []uint{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
+	assert.True(t, UIntArrayEquals(d["blocked_filtering"].([]uint), a))
+
+	a = []uint{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+	assert.True(t, UIntArrayEquals(d["replaced_safebrowsing"].([]uint), a))
+
+	a = []uint{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+	assert.True(t, UIntArrayEquals(d["replaced_parental"].([]uint), a))
+
+	m := d["top_queried_domains"].([]map[string]uint)
+	assert.True(t, m[0]["domain"] == 1)
+
+	m = d["top_blocked_domains"].([]map[string]uint)
+	assert.True(t, m[0]["domain"] == 1)
+
+	m = d["top_clients"].([]map[string]uint)
+	assert.True(t, m[0]["127.0.0.1"] == 2)
+
+	assert.True(t, d["num_dns_queries"].(uint) == 2)
+	assert.True(t, d["num_blocked_filtering"].(uint) == 1)
+	assert.True(t, d["num_replaced_safebrowsing"].(uint) == 0)
+	assert.True(t, d["num_replaced_safesearch"].(uint) == 0)
+	assert.True(t, d["num_replaced_parental"].(uint) == 0)
+	assert.True(t, d["avg_processing_time"].(float64) == 0.123456)
+
+	s.Clear()
+	s.Close()
+	os.Remove("./stats.db")
+}
+
+func TestLargeNumbers(t *testing.T) {
+	var hour int32
+	hour = 1
+	newID := func() int {
+		// use "atomic" to make Go race detector happy
+		return int(atomic.LoadInt32(&hour))
+	}
+
+	// log.SetLevel(log.DEBUG)
+	fn := "./stats.db"
+	os.Remove(fn)
+	s := New(fn, 1, newID)
+	e := Entry{}
+
+	n := 1000 // number of distinct clients and domains every hour
+	for h := 0; h != 12; h++ {
+		if h != 0 {
+			atomic.AddInt32(&hour, 1)
+			time.Sleep(1500 * time.Millisecond)
+		}
+		for i := 0; i != n; i++ {
+			e.Domain = fmt.Sprintf("domain%d", i)
+			e.Client = net.ParseIP("127.0.0.1")
+			e.Client[2] = byte((i & 0xff00) >> 8)
+			e.Client[3] = byte(i & 0xff)
+			e.Result = RNotFiltered
+			e.Time = 123456
+			s.Update(e)
+		}
+	}
+
+	d := s.GetData(Hours)
+	assert.True(t, d["num_dns_queries"].(uint) == uint(int(hour)*n))
+
+	s.Close()
+	os.Remove(fn)
+}

stats/stats_unit.go

@@ -0,0 +1,672 @@
+package stats
+
+import (
+	"bytes"
+	"encoding/binary"
+	"encoding/gob"
+	"fmt"
+	"os"
+	"sort"
+	"sync"
+	"time"
+
+	"github.com/AdguardTeam/golibs/log"
+	bolt "github.com/etcd-io/bbolt"
+)
+
+const (
+	maxDomains = 100 // max number of top domains to store in file or return via Get()
+	maxClients = 100 // max number of top clients to store in file or return via Get()
+)
+
+// statsCtx - global context
+type statsCtx struct {
+	limit    int            // maximum time we need to keep data for (in hours)
+	filename string         // database file name
+	unitID   unitIDCallback // user function which returns the current unit ID
+	db       *bolt.DB
+
+	unit     *unit      // the current unit
+	unitLock sync.Mutex // protect 'unit'
+}
+
+// data for 1 time unit
+type unit struct {
+	id int // unit ID.  Default: absolute hour since Jan 1, 1970
+
+	nTotal  int   // total requests
+	nResult []int // number of requests per one result
+	timeSum int   // sum of processing time of all requests (usec)
+
+	// top:
+	domains        map[string]int // number of requests per domain
+	blockedDomains map[string]int // number of blocked requests per domain
+	clients        map[string]int // number of requests per client
+}
+
+// name-count pair
+type countPair struct {
+	Name  string
+	Count uint
+}
+
+// structure for storing data in file
+type unitDB struct {
+	NTotal  uint
+	NResult []uint
+
+	Domains        []countPair
+	BlockedDomains []countPair
+	Clients        []countPair
+
+	TimeAvg uint // usec
+}
+
+func createObject(filename string, limitDays int, unitID unitIDCallback) *statsCtx {
+	s := statsCtx{}
+	s.limit = limitDays * 24
+	s.filename = filename
+	s.unitID = newUnitID
+	if unitID != nil {
+		s.unitID = unitID
+	}
+
+	if !s.dbOpen() {
+		return nil
+	}
+
+	id := s.unitID()
+	tx := s.beginTxn(true)
+	var udb *unitDB
+	if tx != nil {
+		log.Tracef("Deleting old units...")
+		firstID := id - s.limit - 1
+		unitDel := 0
+		forEachBkt := func(name []byte, b *bolt.Bucket) error {
+			id := btoi(name)
+			if id < firstID {
+				err := tx.DeleteBucket(name)
+				if err != nil {
+					log.Debug("tx.DeleteBucket: %s", err)
+				}
+				log.Debug("Stats: deleted unit %d", id)
+				unitDel++
+				return nil
+			}
+			return fmt.Errorf("")
+		}
+		_ = tx.ForEach(forEachBkt)
+
+		udb = s.loadUnitFromDB(tx, id)
+
+		if unitDel != 0 {
+			s.commitTxn(tx)
+		} else {
+			_ = tx.Rollback()
+		}
+	}
+
+	u := unit{}
+	s.initUnit(&u, id)
+	if udb != nil {
+		deserialize(&u, udb)
+	}
+	s.unit = &u
+
+	go s.periodicFlush()
+
+	log.Debug("Stats: initialized")
+	return &s
+}
+
+func (s *statsCtx) dbOpen() bool {
+	var err error
+	log.Tracef("db.Open...")
+	s.db, err = bolt.Open(s.filename, 0644, nil)
+	if err != nil {
+		log.Error("Stats: open DB: %s: %s", s.filename, err)
+		return false
+	}
+	log.Tracef("db.Open")
+	return true
+}
+
+// Atomically swap the currently active unit with a new value
+// Return old value
+func (s *statsCtx) swapUnit(new *unit) *unit {
+	s.unitLock.Lock()
+	u := s.unit
+	s.unit = new
+	s.unitLock.Unlock()
+	return u
+}
+
+// Get unit ID for the current hour
+func newUnitID() int {
+	return int(time.Now().Unix() / (60 * 60))
+}
+
+// Initialize a unit
+func (s *statsCtx) initUnit(u *unit, id int) {
+	u.id = id
+	u.nResult = make([]int, rLast)
+	u.domains = make(map[string]int)
+	u.blockedDomains = make(map[string]int)
+	u.clients = make(map[string]int)
+}
+
+// Open a DB transaction
+func (s *statsCtx) beginTxn(wr bool) *bolt.Tx {
+	db := s.db
+	if db == nil {
+		return nil
+	}
+
+	log.Tracef("db.Begin...")
+	tx, err := db.Begin(wr)
+	if err != nil {
+		log.Error("db.Begin: %s", err)
+		return nil
+	}
+	log.Tracef("db.Begin")
+	return tx
+}
+
+func (s *statsCtx) commitTxn(tx *bolt.Tx) {
+	err := tx.Commit()
+	if err != nil {
+		log.Debug("tx.Commit: %s", err)
+		return
+	}
+	log.Tracef("tx.Commit")
+}
+
+// Get unit name
+func unitName(id int) []byte {
+	return itob(id)
+}
+
+// Convert integer to 8-byte array (big endian)
+func itob(v int) []byte {
+	b := make([]byte, 8)
+	binary.BigEndian.PutUint64(b, uint64(v))
+	return b
+}
+
+// Convert 8-byte array (big endian) to integer
+func btoi(b []byte) int {
+	return int(binary.BigEndian.Uint64(b))
+}
+
+// Flush the current unit to DB and delete an old unit when a new hour is started
+func (s *statsCtx) periodicFlush() {
+	for {
+		s.unitLock.Lock()
+		ptr := s.unit
+		s.unitLock.Unlock()
+		if ptr == nil {
+			break
+		}
+
+		id := s.unitID()
+		if ptr.id == id {
+			time.Sleep(time.Second)
+			continue
+		}
+
+		nu := unit{}
+		s.initUnit(&nu, id)
+		u := s.swapUnit(&nu)
+		udb := serialize(u)
+
+		tx := s.beginTxn(true)
+		if tx == nil {
+			continue
+		}
+		ok1 := s.flushUnitToDB(tx, u.id, udb)
+		ok2 := s.deleteUnit(tx, id-s.limit)
+		if ok1 || ok2 {
+			s.commitTxn(tx)
+		} else {
+			_ = tx.Rollback()
+		}
+	}
+	log.Tracef("periodicFlush() exited")
+}
+
+// Delete unit's data from file
+func (s *statsCtx) deleteUnit(tx *bolt.Tx, id int) bool {
+	err := tx.DeleteBucket(unitName(id))
+	if err != nil {
+		log.Tracef("bolt DeleteBucket: %s", err)
+		return false
+	}
+	log.Debug("Stats: deleted unit %d", id)
+	return true
+}
+
+func convertMapToArray(m map[string]int, max int) []countPair {
+	a := []countPair{}
+	for k, v := range m {
+		pair := countPair{}
+		pair.Name = k
+		pair.Count = uint(v)
+		a = append(a, pair)
+	}
+	less := func(i, j int) bool {
+		if a[i].Count >= a[j].Count {
+			return true
+		}
+		return false
+	}
+	sort.Slice(a, less)
+	if max > len(a) {
+		max = len(a)
+	}
+	return a[:max]
+}
+
+func convertArrayToMap(a []countPair) map[string]int {
+	m := map[string]int{}
+	for _, it := range a {
+		m[it.Name] = int(it.Count)
+	}
+	return m
+}
+
+func serialize(u *unit) *unitDB {
+	udb := unitDB{}
+	udb.NTotal = uint(u.nTotal)
+	for _, it := range u.nResult {
+		udb.NResult = append(udb.NResult, uint(it))
+	}
+	if u.nTotal != 0 {
+		udb.TimeAvg = uint(u.timeSum / u.nTotal)
+	}
+	udb.Domains = convertMapToArray(u.domains, maxDomains)
+	udb.BlockedDomains = convertMapToArray(u.blockedDomains, maxDomains)
+	udb.Clients = convertMapToArray(u.clients, maxClients)
+	return &udb
+}
+
+func deserialize(u *unit, udb *unitDB) {
+	u.nTotal = int(udb.NTotal)
+	for _, it := range udb.NResult {
+		u.nResult = append(u.nResult, int(it))
+	}
+	u.domains = convertArrayToMap(udb.Domains)
+	u.blockedDomains = convertArrayToMap(udb.BlockedDomains)
+	u.clients = convertArrayToMap(udb.Clients)
+	u.timeSum = int(udb.TimeAvg) * u.nTotal
+}
+
+func (s *statsCtx) flushUnitToDB(tx *bolt.Tx, id int, udb *unitDB) bool {
+	log.Tracef("Flushing unit %d", id)
+
+	bkt, err := tx.CreateBucketIfNotExists(unitName(id))
+	if err != nil {
+		log.Error("tx.CreateBucketIfNotExists: %s", err)
+		return false
+	}
+
+	var buf bytes.Buffer
+	enc := gob.NewEncoder(&buf)
+	err = enc.Encode(udb)
+	if err != nil {
+		log.Error("gob.Encode: %s", err)
+		return false
+	}
+
+	err = bkt.Put([]byte{0}, buf.Bytes())
+	if err != nil {
+		log.Error("bkt.Put: %s", err)
+		return false
+	}
+
+	return true
+}
+
+func (s *statsCtx) loadUnitFromDB(tx *bolt.Tx, id int) *unitDB {
+	bkt := tx.Bucket(unitName(id))
+	if bkt == nil {
+		return nil
+	}
+
+	log.Tracef("Loading unit %d", id)
+
+	var buf bytes.Buffer
+	buf.Write(bkt.Get([]byte{0}))
+	dec := gob.NewDecoder(&buf)
+	udb := unitDB{}
+	err := dec.Decode(&udb)
+	if err != nil {
+		log.Error("gob Decode: %s", err)
+		return nil
+	}
+
+	return &udb
+}
+
+func convertTopArray(a []countPair) []map[string]uint {
+	m := []map[string]uint{}
+	for _, it := range a {
+		ent := map[string]uint{}
+		ent[it.Name] = it.Count
+		m = append(m, ent)
+	}
+	return m
+}
+
+func (s *statsCtx) Configure(limit int) {
+	if limit < 0 {
+		return
+	}
+	s.limit = limit * 24
+	log.Debug("Stats: set limit: %d", limit)
+}
+
+func (s *statsCtx) Close() {
+	u := s.swapUnit(nil)
+	udb := serialize(u)
+	tx := s.beginTxn(true)
+	if tx != nil {
+		if s.flushUnitToDB(tx, u.id, udb) {
+			s.commitTxn(tx)
+		} else {
+			_ = tx.Rollback()
+		}
+	}
+
+	if s.db != nil {
+		log.Tracef("db.Close...")
+		_ = s.db.Close()
+		log.Tracef("db.Close")
+	}
+
+	log.Debug("Stats: closed")
+}
+
+func (s *statsCtx) Clear() {
+	tx := s.beginTxn(true)
+	if tx != nil {
+		db := s.db
+		s.db = nil
+		_ = tx.Rollback()
+		// the active transactions can continue using database,
+		//  but no new transactions will be opened
+		_ = db.Close()
+		log.Tracef("db.Close")
+		// all active transactions are now closed
+	}
+
+	u := unit{}
+	s.initUnit(&u, s.unitID())
+	_ = s.swapUnit(&u)
+
+	err := os.Remove(s.filename)
+	if err != nil {
+		log.Error("os.Remove: %s", err)
+	}
+
+	_ = s.dbOpen()
+
+	log.Debug("Stats: cleared")
+}
+
+func (s *statsCtx) Update(e Entry) {
+	if e.Result == 0 ||
+		len(e.Domain) == 0 ||
+		!(len(e.Client) == 4 || len(e.Client) == 16) {
+		return
+	}
+	client := e.Client.String()
+
+	s.unitLock.Lock()
+	u := s.unit
+
+	u.nResult[e.Result]++
+
+	if e.Result == RNotFiltered {
+		u.domains[e.Domain]++
+	} else {
+		u.blockedDomains[e.Domain]++
+	}
+
+	u.clients[client]++
+	u.timeSum += int(e.Time)
+	u.nTotal++
+	s.unitLock.Unlock()
+}
+
+/* Algorithm:
+. Prepare array of N units, where N is the value of "limit" configuration setting
+ . Load data for the most recent units from file
+   If a unit with required ID doesn't exist, just add an empty unit
+ . Get data for the current unit
+. Process data from the units and prepare an output map object:
+ * per time unit counters:
+  * DNS-queries/time-unit
+  * blocked/time-unit
+  * safebrowsing-blocked/time-unit
+  * parental-blocked/time-unit
+  If time-unit is an hour, just add values from each unit to an array.
+  If time-unit is a day, aggregate per-hour data into days.
+ * top counters:
+  * queries/domain
+  * queries/blocked-domain
+  * queries/client
+  To get these values we first sum up data for all units into a single map.
+  Then we get the pairs with the highest numbers (the values are sorted in descending order)
+ * total counters:
+  * DNS-queries
+  * blocked
+  * safebrowsing-blocked
+  * safesearch-blocked
+  * parental-blocked
+  These values are just the sum of data for all units.
+*/
+// nolint (gocyclo)
+func (s *statsCtx) GetData(timeUnit TimeUnit) map[string]interface{} {
+	d := map[string]interface{}{}
+
+	tx := s.beginTxn(false)
+	if tx == nil {
+		return nil
+	}
+
+	units := []*unitDB{} //per-hour units
+	lastID := s.unitID()
+	firstID := lastID - s.limit + 1
+	for i := firstID; i != lastID; i++ {
+		u := s.loadUnitFromDB(tx, i)
+		if u == nil {
+			u = &unitDB{}
+			u.NResult = make([]uint, rLast)
+		}
+		units = append(units, u)
+	}
+
+	_ = tx.Rollback()
+
+	s.unitLock.Lock()
+	cu := serialize(s.unit)
+	cuID := s.unit.id
+	s.unitLock.Unlock()
+	if cuID != lastID {
+		units = units[1:]
+	}
+	units = append(units, cu)
+
+	if len(units) != s.limit {
+		log.Fatalf("len(units) != s.limit: %d %d", len(units), s.limit)
+	}
+
+	// per time unit counters:
+
+	// 720 hours may span 31 days, so we skip data for the first day in this case
+	firstDayID := (firstID + 24 - 1) / 24 * 24 // align_ceil(24)
+
+	a := []uint{}
+	if timeUnit == Hours {
+		for _, u := range units {
+			a = append(a, u.NTotal)
+		}
+	} else {
+		var sum uint
+		id := firstDayID
+		nextDayID := firstDayID + 24
+		for i := firstDayID - firstID; i != len(units); i++ {
+			sum += units[i].NTotal
+			if id == nextDayID {
+				a = append(a, sum)
+				sum = 0
+				nextDayID += 24
+			}
+			id++
+		}
+		if id < nextDayID {
+			a = append(a, sum)
+		}
+		if len(a) != s.limit/24 {
+			log.Fatalf("len(a) != s.limit: %d %d", len(a), s.limit)
+		}
+	}
+	d["dns_queries"] = a
+
+	a = []uint{}
+	if timeUnit == Hours {
+		for _, u := range units {
+			a = append(a, u.NResult[RFiltered])
+		}
+	} else {
+		var sum uint
+		id := firstDayID
+		nextDayID := firstDayID + 24
+		for i := firstDayID - firstID; i != len(units); i++ {
+			sum += units[i].NResult[RFiltered]
+			if id == nextDayID {
+				a = append(a, sum)
+				sum = 0
+				nextDayID += 24
+			}
+			id++
+		}
+		if id < nextDayID {
+			a = append(a, sum)
+		}
+	}
+	d["blocked_filtering"] = a
+
+	a = []uint{}
+	if timeUnit == Hours {
+		for _, u := range units {
+			a = append(a, u.NResult[RSafeBrowsing])
+		}
+	} else {
+		var sum uint
+		id := firstDayID
+		nextDayID := firstDayID + 24
+		for i := firstDayID - firstID; i != len(units); i++ {
+			sum += units[i].NResult[RSafeBrowsing]
+			if id == nextDayID {
+				a = append(a, sum)
+				sum = 0
+				nextDayID += 24
+			}
+			id++
+		}
+		if id < nextDayID {
+			a = append(a, sum)
+		}
+	}
+	d["replaced_safebrowsing"] = a
+
+	a = []uint{}
+	if timeUnit == Hours {
+		for _, u := range units {
+			a = append(a, u.NResult[RParental])
+		}
+	} else {
+		var sum uint
+		id := firstDayID
+		nextDayID := firstDayID + 24
+		for i := firstDayID - firstID; i != len(units); i++ {
+			sum += units[i].NResult[RParental]
+			if id == nextDayID {
+				a = append(a, sum)
+				sum = 0
+				nextDayID += 24
+			}
+			id++
+		}
+		if id < nextDayID {
+			a = append(a, sum)
+		}
+	}
+	d["replaced_parental"] = a
+
+	// top counters:
+
+	m := map[string]int{}
+	for _, u := range units {
+		for _, it := range u.Domains {
+			m[it.Name] += int(it.Count)
+		}
+	}
+	a2 := convertMapToArray(m, maxDomains)
+	d["top_queried_domains"] = convertTopArray(a2)
+
+	m = map[string]int{}
+	for _, u := range units {
+		for _, it := range u.BlockedDomains {
+			m[it.Name] += int(it.Count)
+		}
+	}
+	a2 = convertMapToArray(m, maxDomains)
+	d["top_blocked_domains"] = convertTopArray(a2)
+
+	m = map[string]int{}
+	for _, u := range units {
+		for _, it := range u.Clients {
+			m[it.Name] += int(it.Count)
+		}
+	}
+	a2 = convertMapToArray(m, maxClients)
+	d["top_clients"] = convertTopArray(a2)
+
+	// total counters:
+
+	sum := unitDB{}
+	timeN := 0
+	sum.NResult = make([]uint, rLast)
+	for _, u := range units {
+		sum.NTotal += u.NTotal
+		sum.TimeAvg += u.TimeAvg
+		if u.TimeAvg != 0 {
+			timeN++
+		}
+		sum.NResult[RFiltered] += u.NResult[RFiltered]
+		sum.NResult[RSafeBrowsing] += u.NResult[RSafeBrowsing]
+		sum.NResult[RSafeSearch] += u.NResult[RSafeSearch]
+		sum.NResult[RParental] += u.NResult[RParental]
+	}
+
+	d["num_dns_queries"] = sum.NTotal
+	d["num_blocked_filtering"] = sum.NResult[RFiltered]
+	d["num_replaced_safebrowsing"] = sum.NResult[RSafeBrowsing]
+	d["num_replaced_safesearch"] = sum.NResult[RSafeSearch]
+	d["num_replaced_parental"] = sum.NResult[RParental]
+
+	avgTime := float64(0)
+	if timeN != 0 {
+		avgTime = float64(sum.TimeAvg/uint(timeN)) / 1000000
+	}
+	d["avg_processing_time"] = avgTime
+
+	d["time_units"] = "hours"
+	if timeUnit == Days {
+		d["time_units"] = "days"
+	}
+
+	return d
+}