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util.go
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util.go
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// Copyright 2016 TiKV Project Authors.
//
// 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package server
import (
"context"
"net/http"
"net/http/pprof"
"path/filepath"
"strings"
"github.com/gorilla/mux"
"github.com/pingcap/errors"
"github.com/pingcap/kvproto/pkg/pdpb"
"github.com/pingcap/log"
"github.com/tikv/pd/pkg/errs"
"github.com/tikv/pd/pkg/utils/apiutil"
"github.com/tikv/pd/pkg/versioninfo"
"github.com/tikv/pd/server/config"
"github.com/urfave/negroni"
"go.uber.org/zap"
)
// CheckPDVersion checks if PD needs to be upgraded.
func CheckPDVersion(opt *config.PersistOptions) {
pdVersion := versioninfo.MinSupportedVersion(versioninfo.Base)
if versioninfo.PDReleaseVersion != "None" {
pdVersion = versioninfo.MustParseVersion(versioninfo.PDReleaseVersion)
}
clusterVersion := *opt.GetClusterVersion()
log.Info("load cluster version", zap.Stringer("cluster-version", clusterVersion))
if pdVersion.LessThan(clusterVersion) {
log.Warn(
"PD version less than cluster version, please upgrade PD",
zap.String("PD-version", pdVersion.String()),
zap.String("cluster-version", clusterVersion.String()))
}
}
func checkBootstrapRequest(clusterID uint64, req *pdpb.BootstrapRequest) error {
// TODO: do more check for request fields validation.
storeMeta := req.GetStore()
if storeMeta == nil {
return errors.Errorf("missing store meta for bootstrap %d", clusterID)
} else if storeMeta.GetId() == 0 {
return errors.New("invalid zero store id")
}
regionMeta := req.GetRegion()
if regionMeta == nil {
return errors.Errorf("missing region meta for bootstrap %d", clusterID)
} else if len(regionMeta.GetStartKey()) > 0 || len(regionMeta.GetEndKey()) > 0 {
// first region start/end key must be empty
return errors.Errorf("invalid first region key range, must all be empty for bootstrap %d", clusterID)
} else if regionMeta.GetId() == 0 {
return errors.New("invalid zero region id")
}
peers := regionMeta.GetPeers()
if len(peers) != 1 {
return errors.Errorf("invalid first region peer count %d, must be 1 for bootstrap %d", len(peers), clusterID)
}
peer := peers[0]
if peer.GetStoreId() != storeMeta.GetId() {
return errors.Errorf("invalid peer store id %d != %d for bootstrap %d", peer.GetStoreId(), storeMeta.GetId(), clusterID)
}
if peer.GetId() == 0 {
return errors.New("invalid zero peer id")
}
return nil
}
func combineBuilderServerHTTPService(ctx context.Context, svr *Server, serviceBuilders ...HandlerBuilder) (map[string]http.Handler, error) {
userHandlers := make(map[string]http.Handler)
registerMap := make(map[string]http.Handler)
apiService := negroni.New()
recovery := negroni.NewRecovery()
apiService.Use(recovery)
router := mux.NewRouter()
for _, build := range serviceBuilders {
handler, info, err := build(ctx, svr)
if err != nil {
return nil, err
}
if !info.IsCore && len(info.PathPrefix) == 0 && (len(info.Name) == 0 || len(info.Version) == 0) {
return nil, errs.ErrAPIInformationInvalid.FastGenByArgs(info.Name, info.Version)
}
if err := apiutil.RegisterUserDefinedHandlers(registerMap, &info, handler); err != nil {
return nil, err
}
}
// Combine the pd service to the router. the extension service will be added to the userHandlers.
for pathPrefix, handler := range registerMap {
if strings.Contains(pathPrefix, apiutil.CorePath) || strings.Contains(pathPrefix, apiutil.ExtensionsPath) {
router.PathPrefix(pathPrefix).Handler(handler)
if pathPrefix == apiutil.CorePath {
// Deprecated
router.Path("/pd/health").Handler(handler)
// Deprecated
router.Path("/pd/ping").Handler(handler)
}
} else {
userHandlers[pathPrefix] = handler
}
}
apiService.UseHandler(router)
userHandlers[pdAPIPrefix] = apiService
// fix issue https://github.com/tikv/pd/issues/7253
// FIXME: remove me after upgrade
userHandlers["/debug/pprof/trace"] = http.HandlerFunc(pprof.Trace)
return userHandlers, nil
}
func isPathInDirectory(path, directory string) bool {
absPath, err := filepath.Abs(path)
if err != nil {
return false
}
absDir, err := filepath.Abs(directory)
if err != nil {
return false
}
return strings.HasPrefix(absPath, absDir)
}