134 lines
4.4 KiB
Go
134 lines
4.4 KiB
Go
// Copyright 2025 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 tikvhandler
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import (
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"context"
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"net/http"
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"time"
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"github.com/pingcap/errors"
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"github.com/pingcap/tidb/pkg/disttask/framework/handle"
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"github.com/pingcap/tidb/pkg/disttask/framework/schstatus"
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"github.com/pingcap/tidb/pkg/keyspace"
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"github.com/pingcap/tidb/pkg/kv"
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"github.com/pingcap/tidb/pkg/server/handler"
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"github.com/pingcap/tidb/pkg/util/logutil"
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"github.com/tikv/client-go/v2/util"
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"go.uber.org/zap"
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)
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const (
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pauseScaleInAction = "pause_scale_in"
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resumeScaleInAction = "resume_scale_in"
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pauseScaleInDefaultTTL = time.Hour
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)
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// DXFScheduleStatusHandler handles the status of DXF schedule.
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type DXFScheduleStatusHandler struct {
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store kv.Storage
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}
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// NewDXFScheduleStatusHandler creates a new DXFScheduleStatusHandler.
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func NewDXFScheduleStatusHandler(store kv.Storage) *DXFScheduleStatusHandler {
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return &DXFScheduleStatusHandler{store}
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}
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// ServeHTTP handles request of resigning ddl owner.
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func (h *DXFScheduleStatusHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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if req.Method != http.MethodGet {
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handler.WriteError(w, errors.Errorf("This api only support GET method"))
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return
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}
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if h.store.GetKeyspace() != keyspace.System {
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handler.WriteError(w, errors.Errorf("This api only support SYSTEM keyspace, current keyspace is %s", h.store.GetKeyspace()))
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return
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}
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ctx := util.WithInternalSourceType(context.Background(), kv.InternalDistTask)
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ctx, cancel := context.WithTimeout(ctx, requestDefaultTimeout)
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defer cancel()
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status, err := handle.GetScheduleStatus(ctx)
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if err != nil {
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logutil.BgLogger().Warn("failed to get DXF schedule status", zap.Error(err))
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handler.WriteErrorWithCode(w, http.StatusInternalServerError, err)
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return
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}
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logutil.BgLogger().Info("current DXF schedule status", zap.Stringer("status", status))
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handler.WriteData(w, status)
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}
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// DXFScheduleHandler handles the DXF schedule actions.
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type DXFScheduleHandler struct {
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store kv.Storage
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}
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// NewDXFScheduleHandler creates a new DXFScheduleHandler.
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func NewDXFScheduleHandler(store kv.Storage) *DXFScheduleHandler {
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return &DXFScheduleHandler{store: store}
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}
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func (h *DXFScheduleHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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if req.Method != http.MethodPost {
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handler.WriteError(w, errors.Errorf("This api only support POST method"))
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return
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}
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if h.store.GetKeyspace() != keyspace.System {
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handler.WriteError(w, errors.Errorf("This api only support SYSTEM keyspace, current keyspace is %s", h.store.GetKeyspace()))
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return
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}
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name, param, err := parsePauseScaleInFlag(req)
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if err != nil {
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handler.WriteError(w, err)
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return
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}
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logutil.BgLogger().Info("DXF schedule flag", zap.String("name", string(name)), zap.Stringer("param", param))
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ctx := util.WithInternalSourceType(context.Background(), kv.InternalDistTask)
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ctx, cancel := context.WithTimeout(ctx, requestDefaultTimeout)
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defer cancel()
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if err := handle.UpdatePauseScaleInFlag(ctx, param); err != nil {
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handler.WriteErrorWithCode(w, http.StatusInternalServerError,
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errors.Errorf("failed to update pause scale-in flag, error %v", err))
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return
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}
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handler.WriteData(w, param)
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}
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func parsePauseScaleInFlag(req *http.Request) (schstatus.Flag, *schstatus.TTLFlag, error) {
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actionStr := req.FormValue("action")
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if actionStr != pauseScaleInAction && actionStr != resumeScaleInAction {
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return "", nil, errors.Errorf("invalid action %s", actionStr)
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}
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ttlFlag := &schstatus.TTLFlag{
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Enabled: actionStr == pauseScaleInAction,
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}
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if ttlFlag.Enabled {
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var (
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err error
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ttl = pauseScaleInDefaultTTL
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)
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ttlStr := req.FormValue("ttl")
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if ttlStr != "" {
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ttl, err = time.ParseDuration(ttlStr)
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if err != nil {
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return "", nil, errors.Errorf("invalid ttl %s, error %v", ttlStr, err)
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}
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}
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ttlFlag.TTL = ttl
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ttlFlag.ExpireTime = time.Now().Add(ttl)
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}
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return schstatus.PauseScaleInFlag, ttlFlag, nil
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}
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