/
applier_handler.go
171 lines (154 loc) · 5.45 KB
/
applier_handler.go
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// Copyright 2018 vip.com.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package api
import (
"net/http"
log "github.com/Sirupsen/logrus"
"github.com/labstack/echo"
"github.com/vipshop/drc/pkg/applier"
"github.com/vipshop/drc/pkg/election"
"github.com/vipshop/drc/pkg/status"
)
type ApplierHandler struct {
applier *applier.ApplierServer
}
func newApplierHandler(applier *applier.ApplierServer) *ApplierHandler {
return &ApplierHandler{
applier: applier,
}
}
func (h *ApplierHandler) GetFailedTrxList(ctx echo.Context) error {
v := status.Get(applier.StatusKey_FailedTrx)
if v == nil {
log.Infof("ApplierHandler.GetFailedTrxList: status not ready")
return ctx.JSON(http.StatusNoContent, NewResp().SetError(ErrStatusNotReady.Error()))
}
execResult, ok := v.(map[string]applier.ExecResult)
if !ok {
log.Errorf("ApplierHandler.GetFailedTrxList: get value is illegal,v:%v", v)
return ctx.JSON(http.StatusInternalServerError, NewResp().SetError(ErrStatusIllegal.Error()))
}
return ctx.JSON(http.StatusOK, NewResp().SetData(execResult))
}
func (h *ApplierHandler) RetryFailedTrx(ctx echo.Context) error {
args := struct {
Gtid string `json:"gtid"`
}{}
err := ctx.Bind(&args)
if err != nil {
return ctx.JSON(http.StatusBadRequest, NewResp().SetError(err.Error()))
}
if args.Gtid == "" {
return ctx.JSON(http.StatusBadRequest, NewResp().SetError(ErrArgsIllegal.Error()))
}
// 检查指定的gtid是否存在
v := status.Get(applier.StatusKey_FailedTrx)
if v == nil {
log.Infof("ApplierHandler.RetryFailedTrx: status not ready")
return ctx.JSON(http.StatusNoContent, NewResp().SetError(ErrStatusNotReady.Error()))
}
execResult, ok := v.(map[string]applier.ExecResult)
if !ok {
log.Errorf("ApplierHandler.RetryFailedTrx: get value is illegal,v:%v", v)
return ctx.JSON(http.StatusInternalServerError, NewResp().SetError(ErrStatusIllegal.Error()))
}
if _, ok := execResult[args.Gtid]; !ok {
// 指定的gtid不存在
return ctx.JSON(http.StatusBadRequest, NewResp().SetError(ErrArgsIllegal.Error()))
}
//如果节点为Follower,则返回出错信息
if h.applier == nil {
return ctx.JSON(http.StatusInternalServerError, NewResp().SetError("not leader"))
}
h.applier.RetryTrx(args.Gtid)
return ctx.JSON(http.StatusOK, NewResp().SetData(args.Gtid))
}
func (h *ApplierHandler) SkipFailedTrx(ctx echo.Context) error {
args := struct {
Gtid string `json:"gtid"`
}{}
err := ctx.Bind(&args)
if err != nil {
return ctx.JSON(http.StatusBadRequest, NewResp().SetError(err.Error()))
}
if args.Gtid == "" {
return ctx.JSON(http.StatusBadRequest, NewResp().SetError(ErrArgsIllegal.Error()))
}
// 检查指定的gtid是否存在
v := status.Get(applier.StatusKey_FailedTrx)
if v == nil {
log.Infof("ApplierHandler.RetryFailedTrx: status not ready")
return ctx.JSON(http.StatusNoContent, NewResp().SetError(ErrStatusNotReady.Error()))
}
execResult, ok := v.(map[string]applier.ExecResult)
if !ok {
log.Errorf("ApplierHandler.RetryFailedTrx: get value is illegal,v:%v", v)
return ctx.JSON(http.StatusInternalServerError, NewResp().SetError(ErrStatusIllegal.Error()))
}
if _, ok := execResult[args.Gtid]; !ok {
// 指定的gtid不存在
return ctx.JSON(http.StatusBadRequest, NewResp().SetError(ErrArgsIllegal.Error()))
}
//如果节点为Follower,则返回出错信息
if h.applier == nil {
return ctx.JSON(http.StatusInternalServerError, NewResp().SetError("not leader"))
}
h.applier.SkipTrx(args.Gtid)
return ctx.JSON(http.StatusOK, NewResp().SetData(args.Gtid))
}
func (h *ApplierHandler) GetApplyProgress(ctx echo.Context) error {
v := status.Get(applier.StatusKey_ApplyProgress)
if v == nil {
log.Infof("ApplierHandler.GetApplyProgress: status not ready")
return ctx.JSON(http.StatusNoContent, NewResp().SetError(ErrStatusNotReady.Error()))
}
progress, ok := v.(applier.ApplyProgress)
if !ok {
log.Errorf("ApplierHandler.GetApplyProgress: status get value is illegal,v:%v", v)
return ctx.JSON(http.StatusInternalServerError, NewResp().SetError(ErrStatusIllegal.Error()))
}
return ctx.JSON(http.StatusOK, NewResp().SetData(progress))
}
func (h *ApplierHandler) GetWorkMode(ctx echo.Context) error {
v := status.Get(election.StatusKey_WorkMode)
if v == nil {
log.Infof("ApplierHandler.GetWorkMode: status not ready")
return ctx.JSON(http.StatusNoContent, NewResp().SetError(ErrStatusNotReady.Error()))
}
workMode, ok := v.(election.WorkingMode)
if !ok {
log.Errorf("ApplierHandler.GetWorkMode: status get value is illegal,v:%v", v)
return ctx.JSON(http.StatusInternalServerError, NewResp().SetError(ErrStatusIllegal.Error()))
}
return ctx.JSON(http.StatusOK, NewResp().SetData(workMode))
}
func (h *ApplierHandler) HealthCheck(ctx echo.Context) error {
return ctx.String(http.StatusOK, "ok")
}
type Resp struct {
Message string `json:"message"`
Data interface{} `json:"data,omitempty"`
}
func NewResp() *Resp {
return &Resp{
Message: "success",
}
}
func (r *Resp) SetData(data interface{}) *Resp {
r.Data = data
return r
}
func (r *Resp) SetError(msg string) *Resp {
r.Message = msg
return r
}