fafa5188c2
Implement configstore maintenance mode and export/import. When configstore is set in maintenance mode it'll start only the maintenance and export/import handlers. Setting maintenance mode will set a key in etcd so all the configstore instances will detect it and enter in maintenance mode. This is done asyncronously so it could take some time (future improvements will add some api to show all the configstore states) Export is always available and will export the datamanager contents. Import is available only during maintenance, given a datamanager export will import it and reset etcd to this import state.
108 lines
2.6 KiB
Go
108 lines
2.6 KiB
Go
// Copyright 2019 Sorint.lab
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package api
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import (
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"net/http"
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"agola.io/agola/internal/etcd"
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"agola.io/agola/internal/services/configstore/action"
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"go.uber.org/zap"
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)
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type MaintenanceModeHandler struct {
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log *zap.SugaredLogger
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ah *action.ActionHandler
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e *etcd.Store
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}
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func NewMaintenanceModeHandler(logger *zap.Logger, ah *action.ActionHandler, e *etcd.Store) *MaintenanceModeHandler {
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return &MaintenanceModeHandler{log: logger.Sugar(), ah: ah, e: e}
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}
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func (h *MaintenanceModeHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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enable := false
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switch r.Method {
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case "PUT":
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enable = true
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case "DELETE":
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enable = false
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}
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err := h.ah.MaintenanceMode(ctx, enable)
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if err != nil {
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h.log.Errorf("err: %+v", err)
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httpError(w, err)
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return
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}
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if err := httpResponse(w, http.StatusOK, nil); err != nil {
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h.log.Errorf("err: %+v", err)
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}
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}
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type ExportHandler struct {
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log *zap.SugaredLogger
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ah *action.ActionHandler
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}
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func NewExportHandler(logger *zap.Logger, ah *action.ActionHandler) *ExportHandler {
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return &ExportHandler{log: logger.Sugar(), ah: ah}
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}
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func (h *ExportHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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err := h.ah.Export(ctx, w)
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if err != nil {
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h.log.Errorf("err: %+v", err)
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// since we already answered with a 200 we cannot return another error code
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// So abort the connection and the client will detect the missing ending chunk
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// and consider this an error
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//
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// this is the way to force close a request without logging the panic
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panic(http.ErrAbortHandler)
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}
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}
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type ImportHandler struct {
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log *zap.SugaredLogger
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ah *action.ActionHandler
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}
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func NewImportHandler(logger *zap.Logger, ah *action.ActionHandler) *ImportHandler {
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return &ImportHandler{log: logger.Sugar(), ah: ah}
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}
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func (h *ImportHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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err := h.ah.Import(ctx, r.Body)
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if err != nil {
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h.log.Errorf("err: %+v", err)
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httpError(w, err)
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return
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}
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if err := httpResponse(w, http.StatusOK, nil); err != nil {
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h.log.Errorf("err: %+v", err)
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}
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}
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