117 lines
2.9 KiB
Go
117 lines
2.9 KiB
Go
// Copyright 2023 PingCAP, Inc.
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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 handler
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import (
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"net/http"
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"time"
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"github.com/gorilla/mux"
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"github.com/pingcap/errors"
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"github.com/pingcap/tidb/kv"
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"github.com/pingcap/tidb/session"
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"github.com/pingcap/tidb/util/logutil"
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"go.uber.org/zap"
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)
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// ClusterUpgradeHandler is the handler for upgrading cluster.
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type ClusterUpgradeHandler struct {
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store kv.Storage
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}
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// NewClusterUpgradeHandler creates a new ClusterUpgradeHandler.
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func NewClusterUpgradeHandler(store kv.Storage) *ClusterUpgradeHandler {
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return &ClusterUpgradeHandler{store: store}
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}
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// ServeHTTP handles request of ddl server info.
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func (h ClusterUpgradeHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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if req.Method != http.MethodPost {
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WriteError(w, errors.Errorf("This API only support POST method"))
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return
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}
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var err error
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var hasDone bool
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params := mux.Vars(req)
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op := params[Operation]
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switch op {
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case "start":
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hasDone, err = h.StartUpgrade()
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case "finish":
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hasDone, err = h.FinishUpgrade()
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default:
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WriteError(w, errors.Errorf("wrong operation:%s", op))
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return
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}
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if err != nil {
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WriteError(w, err)
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return
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}
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if hasDone {
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switch op {
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case "start":
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WriteData(w, "It's a duplicated op and the cluster is already in upgrading state.")
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case "finish":
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WriteData(w, "It's a duplicated op and the cluster is already in normal state.")
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}
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} else {
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WriteData(w, "success!")
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}
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logutil.Logger(req.Context()).Info("upgrade op success",
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zap.String("category", "upgrading"), zap.String("op", req.FormValue("op")), zap.Bool("hasDone", hasDone))
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}
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// StartUpgrade is used to start the upgrade.
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func (h ClusterUpgradeHandler) StartUpgrade() (hasDone bool, err error) {
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se, err := session.CreateSession(h.store)
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if err != nil {
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return false, err
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}
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defer se.Close()
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isUpgrading, err := session.IsUpgradingClusterState(se)
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if err != nil {
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return false, err
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}
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if isUpgrading {
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return true, nil
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}
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err = session.SyncUpgradeState(se, 10*time.Second)
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return false, err
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}
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// FinishUpgrade is used to finish the upgrade.
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func (h ClusterUpgradeHandler) FinishUpgrade() (hasDone bool, err error) {
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se, err := session.CreateSession(h.store)
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if err != nil {
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return false, err
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}
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defer se.Close()
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isUpgrading, err := session.IsUpgradingClusterState(se)
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if err != nil {
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return false, err
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}
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if !isUpgrading {
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return true, nil
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}
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err = session.SyncNormalRunning(se)
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return false, err
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}
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