gosora/routes/panel/dashboard.go

296 lines
11 KiB
Go

package panel
import (
"database/sql"
"encoding/json"
"fmt"
"net/http"
"runtime"
"strconv"
"sync"
"sync/atomic"
"time"
c "git.tuxpa.in/a/gosora/common"
p "git.tuxpa.in/a/gosora/common/phrases"
qgen "git.tuxpa.in/a/gosora/query_gen"
"github.com/Azareal/gopsutil/mem"
"github.com/pkg/errors"
)
type dashStmts struct {
todaysPostCount *sql.Stmt
todaysTopicCount *sql.Stmt
todaysTopicCountByForum *sql.Stmt
todaysNewUserCount *sql.Stmt
weeklyTopicCountByForum *sql.Stmt
}
// TODO: Stop hard-coding these queries
func dashMySQLStmts() (stmts dashStmts, err error) {
db := qgen.Builder.GetConn()
prepStmt := func(table, ext, dur string) *sql.Stmt {
if err != nil {
return nil
}
stmt, ierr := db.Prepare("select count(*) from " + table + " where createdAt BETWEEN (utc_timestamp() - interval 1 " + dur + ") and utc_timestamp() " + ext)
err = errors.WithStack(ierr)
return stmt
}
stmts.todaysPostCount = prepStmt("replies", "", "day")
stmts.todaysTopicCount = prepStmt("topics", "", "day")
stmts.todaysNewUserCount = prepStmt("users", "", "day")
stmts.todaysTopicCountByForum = prepStmt("topics", " and parentID=?", "day")
stmts.weeklyTopicCountByForum = prepStmt("topics", " and parentID=?", "week")
return stmts, err
}
// TODO: Stop hard-coding these queries
func dashMSSQLStmts() (stmts dashStmts, err error) {
db := qgen.Builder.GetConn()
prepStmt := func(table, ext, dur string) *sql.Stmt {
if err != nil {
return nil
}
stmt, ierr := db.Prepare("select count(*) from " + table + " where createdAt >= DATEADD(" + dur + ", -1, GETUTCDATE())" + ext)
err = errors.WithStack(ierr)
return stmt
}
stmts.todaysPostCount = prepStmt("replies", "", "DAY")
stmts.todaysTopicCount = prepStmt("topics", "", "DAY")
stmts.todaysNewUserCount = prepStmt("users", "", "DAY")
stmts.todaysTopicCountByForum = prepStmt("topics", " and parentID=?", "DAY")
stmts.weeklyTopicCountByForum = prepStmt("topics", " and parentID=?", "WEEK")
return stmts, err
}
type GE = c.GridElement
func Dashboard(w http.ResponseWriter, r *http.Request, user *c.User) c.RouteError {
basePage, ferr := buildBasePage(w, r, user, "dashboard", "dashboard")
if ferr != nil {
return ferr
}
unknown := p.GetTmplPhrase("panel_dashboard_unknown")
// We won't calculate this on the spot anymore, as the system doesn't seem to like it if we do multiple fetches simultaneously. Should we constantly calculate this on a background thread? Perhaps, the watchdog to scale back heavy features under load? One plus side is that we'd get immediate CPU percentages here instead of waiting it to kick in with WebSockets
cpustr := unknown
var cpuColour string
lessThanSwitch := func(number, lowerBound, midBound int) string {
switch {
case number < lowerBound:
return "stat_green"
case number < midBound:
return "stat_orange"
}
return "stat_red"
}
var ramstr, ramColour string
memres, err := mem.VirtualMemory()
if err != nil {
ramstr = unknown
} else {
totalCount, totalUnit := c.ConvertByteUnit(float64(memres.Total))
usedCount := c.ConvertByteInUnit(float64(memres.Total-memres.Available), totalUnit)
// Round totals with .9s up, it's how most people see it anyway. Floats are notoriously imprecise, so do it off 0.85
var totstr string
if (totalCount - float64(int(totalCount))) > 0.85 {
usedCount += 1.0 - (totalCount - float64(int(totalCount)))
totstr = strconv.Itoa(int(totalCount) + 1)
} else {
totstr = fmt.Sprintf("%.1f", totalCount)
}
if usedCount > totalCount {
usedCount = totalCount
}
ramstr = fmt.Sprintf("%.1f", usedCount) + " / " + totstr + totalUnit
ramperc := ((memres.Total - memres.Available) * 100) / memres.Total
ramColour = lessThanSwitch(int(ramperc), 50, 75)
}
var m runtime.MemStats
runtime.ReadMemStats(&m)
memCount, memUnit := c.ConvertByteUnit(float64(m.Sys))
greaterThanSwitch := func(number, lowerBound, midBound int) string {
switch {
case number > midBound:
return "stat_green"
case number > lowerBound:
return "stat_orange"
}
return "stat_red"
}
// TODO: Add a stat store for this?
var intErr error
extractStat := func(stmt *sql.Stmt, args ...interface{}) (stat int) {
err := stmt.QueryRow(args...).Scan(&stat)
if err != nil && err != sql.ErrNoRows {
intErr = err
}
return stat
}
var stmts dashStmts
switch qgen.Builder.GetAdapter().GetName() {
case "mysql":
stmts, err = dashMySQLStmts()
case "mssql":
stmts, err = dashMSSQLStmts()
default:
return c.InternalError(errors.New("Unknown database adapter on dashboard"), w, r)
}
if err != nil {
return c.InternalError(err, w, r)
}
// TODO: Allow for more complex phrase structures than just suffixes
postCount := extractStat(stmts.todaysPostCount)
postInterval := p.GetTmplPhrase("panel_dashboard_day_suffix")
postColour := greaterThanSwitch(postCount, 5, 25)
topicCount := extractStat(stmts.todaysTopicCount)
topicInterval := p.GetTmplPhrase("panel_dashboard_day_suffix")
topicColour := greaterThanSwitch(topicCount, 0, 8)
reportCount := extractStat(stmts.weeklyTopicCountByForum, c.ReportForumID)
reportInterval := p.GetTmplPhrase("panel_dashboard_week_suffix")
newUserCount := extractStat(stmts.todaysNewUserCount)
newUserInterval := p.GetTmplPhrase("panel_dashboard_week_suffix")
// Did any of the extractStats fail?
if intErr != nil {
return c.InternalError(intErr, w, r)
}
grid1 := []GE{}
addElem1 := func(id, href, body string, order int, class, back, textColour, tooltip string) {
grid1 = append(grid1, GE{id, href, body, order, class, back, textColour, tooltip})
}
gridElements := []GE{}
addElem := func(id, href, body string, order int, class, back, textColour, tooltip string) {
gridElements = append(gridElements, GE{id, href, body, order, class, back, textColour, tooltip})
}
// TODO: Implement a check for new versions of Gosora
// TODO: Localise this
//addElem1("dash-version", "", "v" + version.String(), 0, "grid_istat stat_green", "", "", "Gosora is up-to-date :)")
addElem1("dash-version", "", "v"+c.SoftwareVersion.String(), 0, "grid_istat", "", "", "")
addElem1("dash-cpu", "", p.GetTmplPhrasef("panel_dashboard_cpu", cpustr), 1, "grid_istat "+cpuColour, "", "", p.GetTmplPhrase("panel_dashboard_cpu_desc"))
addElem1("dash-ram", "", p.GetTmplPhrasef("panel_dashboard_ram", ramstr), 2, "grid_istat "+ramColour, "", "", p.GetTmplPhrase("panel_dashboard_ram_desc"))
addElem1("dash-memused", "/panel/analytics/memory/", p.GetTmplPhrasef("panel_dashboard_memused", memCount, memUnit), 2, "grid_istat", "", "", p.GetTmplPhrase("panel_dashboard_memused_desc"))
/*dirSize := getDirSize()
if dirSize.Size != 0 {
dirFloat, unit := c.ConvertByteUnit(float64(dirSize.Size))
addElem1("dash-disk","", p.GetTmplPhrasef("panel_dashboard_disk", dirFloat, unit), 2, "grid_istat", "", "", p.GetTmplPhrase("panel_dashboard_disk_desc"))
dur := time.Since(dirSize.Time)
if dur.Seconds() > 3 {
startDirSizeTask()
}
} else {
addElem1("dash-disk","", p.GetTmplPhrase("panel_dashboard_disk_unknown"), 2, "grid_istat", "", "", p.GetTmplPhrase("panel_dashboard_disk_desc"))
startDirSizeTask()
}*/
if c.EnableWebsockets {
uonline := c.WsHub.UserCount()
gonline := c.WsHub.GuestCount()
totonline := uonline + gonline
//reqCount := 0
onlineColour := greaterThanSwitch(totonline, 3, 10)
onlineGuestsColour := greaterThanSwitch(gonline, 1, 10)
onlineUsersColour := greaterThanSwitch(uonline, 1, 5)
totonline, totunit := c.ConvertFriendlyUnit(totonline)
uonline, uunit := c.ConvertFriendlyUnit(uonline)
gonline, gunit := c.ConvertFriendlyUnit(gonline)
addElem("dash-totonline", "", p.GetTmplPhrasef("panel_dashboard_online", totonline, totunit), 3, "grid_stat "+onlineColour, "", "", p.GetTmplPhrase("panel_dashboard_online_desc"))
addElem("dash-gonline", "", p.GetTmplPhrasef("panel_dashboard_guests_online", gonline, gunit), 4, "grid_stat "+onlineGuestsColour, "", "", p.GetTmplPhrase("panel_dashboard_guests_online_desc"))
addElem("dash-uonline", "", p.GetTmplPhrasef("panel_dashboard_users_online", uonline, uunit), 5, "grid_stat "+onlineUsersColour, "", "", p.GetTmplPhrase("panel_dashboard_users_online_desc"))
//addElem("dash-reqs","", strconv.Itoa(reqCount) + " reqs / second", 7, "grid_stat grid_end_group " + topicColour, "", "", "The number of requests over the last 24 hours")
}
addElem("dash-postsperday", "", p.GetTmplPhrasef("panel_dashboard_posts", postCount, postInterval), 6, "grid_stat "+postColour, "", "", p.GetTmplPhrase("panel_dashboard_posts_desc"))
addElem("dash-topicsperday", "", p.GetTmplPhrasef("panel_dashboard_topics", topicCount, topicInterval), 7, "grid_stat "+topicColour, "", "", p.GetTmplPhrase("panel_dashboard_topics_desc"))
addElem("dash-totonlineperday", "", p.GetTmplPhrasef("panel_dashboard_online_day"), 8, "grid_stat stat_disabled", "", "", p.GetTmplPhrase("panel_dashboard_coming_soon") /*, "The people online over the last 24 hours"*/)
addElem("dash-searches", "", p.GetTmplPhrasef("panel_dashboard_searches_day"), 9, "grid_stat stat_disabled", "", "", p.GetTmplPhrase("panel_dashboard_coming_soon") /*"The number of searches over the last 7 days"*/)
addElem("dash-newusers", "", p.GetTmplPhrasef("panel_dashboard_new_users", newUserCount, newUserInterval), 10, "grid_stat", "", "", p.GetTmplPhrasef("panel_dashboard_new_users_desc"))
addElem("dash-reports", "", p.GetTmplPhrasef("panel_dashboard_reports", reportCount, reportInterval), 11, "grid_stat", "", "", p.GetTmplPhrasef("panel_dashboard_reports_desc"))
if false {
addElem("dash-minperuser", "", "?? minutes / user / week", 12, "grid_stat stat_disabled", "", "", p.GetTmplPhrase("panel_dashboard_coming_soon") /*"The average number of number of minutes spent by each active user over the last 7 days"*/)
addElem("dash-visitorsperweek", "", "?? visitors / week", 13, "grid_stat stat_disabled", "", "", p.GetTmplPhrase("panel_dashboard_coming_soon") /*"The number of unique visitors we've had over the last 7 days"*/)
addElem("dash-postsperuser", "", "?? posts / user / week", 14, "grid_stat stat_disabled", "", "", p.GetTmplPhrase("panel_dashboard_coming_soon") /*"The average number of posts made by each active user over the past week"*/)
}
return renderTemplate("panel", w, r, basePage.Header, c.Panel{basePage, "panel_dashboard_right", "", "panel_dashboard", c.DashGrids{grid1, gridElements}})
}
type dirSize struct {
Size int
Time time.Time
}
func init() {
cachedDirSize.Store(dirSize{0, time.Now()})
}
var cachedDirSize atomic.Value
var dstMu sync.Mutex
var dstMuGuess = 0
func startDirSizeTask() {
if dstMuGuess == 1 {
return
}
dstMu.Lock()
dstMuGuess = 1
go func() {
defer func() {
dstMuGuess = 0
dstMu.Unlock()
}()
defer c.EatPanics()
dDirSize, e := c.DirSize(".")
if e != nil {
c.LogWarning(e)
}
cachedDirSize.Store(dirSize{dDirSize, time.Now()})
}()
}
func getDirSize() dirSize {
return cachedDirSize.Load().(dirSize)
}
type StatsDiskJson struct {
Total string `json:"total"`
}
func StatsDisk(w http.ResponseWriter, r *http.Request, user *c.User) c.RouteError {
dirSize := getDirSize()
dirFloat, unit := c.ConvertByteUnit(float64(dirSize.Size))
u := p.GetTmplPhrasef("unit", dirFloat, unit)
oBytes, err := json.Marshal(StatsDiskJson{u})
if err != nil {
return c.InternalErrorJS(err, w, r)
}
w.Write(oBytes)
return nil
}