minio/cmd/peer-rest-server.go

1407 lines
42 KiB
Go

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"context"
"encoding/gob"
"errors"
"fmt"
"io"
"net/http"
"strconv"
"strings"
"sync/atomic"
"time"
"github.com/dustin/go-humanize"
"github.com/minio/madmin-go/v2"
b "github.com/minio/minio/internal/bucket/bandwidth"
"github.com/minio/minio/internal/event"
"github.com/minio/minio/internal/logger"
"github.com/minio/minio/internal/pubsub"
"github.com/minio/mux"
"github.com/minio/pkg/logger/message/log"
"github.com/tinylib/msgp/msgp"
)
// To abstract a node over network.
type peerRESTServer struct{}
// GetLocksHandler - returns list of older lock from the server.
func (s *peerRESTServer) GetLocksHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx := newContext(r, w, "GetLocks")
logger.LogIf(ctx, gob.NewEncoder(w).Encode(globalLockServer.DupLockMap()))
}
// DeletePolicyHandler - deletes a policy on the server.
func (s *peerRESTServer) DeletePolicyHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
vars := mux.Vars(r)
policyName := vars[peerRESTPolicy]
if policyName == "" {
s.writeErrorResponse(w, errors.New("policyName is missing"))
return
}
if err := globalIAMSys.DeletePolicy(r.Context(), policyName, false); err != nil {
s.writeErrorResponse(w, err)
return
}
}
// LoadPolicyHandler - reloads a policy on the server.
func (s *peerRESTServer) LoadPolicyHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
vars := mux.Vars(r)
policyName := vars[peerRESTPolicy]
if policyName == "" {
s.writeErrorResponse(w, errors.New("policyName is missing"))
return
}
if err := globalIAMSys.LoadPolicy(r.Context(), objAPI, policyName); err != nil {
s.writeErrorResponse(w, err)
return
}
}
// LoadPolicyMappingHandler - reloads a policy mapping on the server.
func (s *peerRESTServer) LoadPolicyMappingHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
userOrGroup := r.Form.Get(peerRESTUserOrGroup)
if userOrGroup == "" {
s.writeErrorResponse(w, errors.New("user-or-group is missing"))
return
}
userType, err := strconv.Atoi(r.Form.Get(peerRESTUserType))
if err != nil {
s.writeErrorResponse(w, fmt.Errorf("user-type `%s` is invalid: %w", r.Form.Get(peerRESTUserType), err))
return
}
_, isGroup := r.Form[peerRESTIsGroup]
if err := globalIAMSys.LoadPolicyMapping(r.Context(), objAPI, userOrGroup, IAMUserType(userType), isGroup); err != nil {
s.writeErrorResponse(w, err)
return
}
}
// DeleteServiceAccountHandler - deletes a service account on the server.
func (s *peerRESTServer) DeleteServiceAccountHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
vars := mux.Vars(r)
accessKey := vars[peerRESTUser]
if accessKey == "" {
s.writeErrorResponse(w, errors.New("service account name is missing"))
return
}
if err := globalIAMSys.DeleteServiceAccount(r.Context(), accessKey, false); err != nil {
s.writeErrorResponse(w, err)
return
}
}
// LoadServiceAccountHandler - reloads a service account on the server.
func (s *peerRESTServer) LoadServiceAccountHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
vars := mux.Vars(r)
accessKey := vars[peerRESTUser]
if accessKey == "" {
s.writeErrorResponse(w, errors.New("service account parameter is missing"))
return
}
if err := globalIAMSys.LoadServiceAccount(r.Context(), accessKey); err != nil {
s.writeErrorResponse(w, err)
return
}
}
// DeleteUserHandler - deletes a user on the server.
func (s *peerRESTServer) DeleteUserHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
vars := mux.Vars(r)
accessKey := vars[peerRESTUser]
if accessKey == "" {
s.writeErrorResponse(w, errors.New("username is missing"))
return
}
if err := globalIAMSys.DeleteUser(r.Context(), accessKey, false); err != nil {
s.writeErrorResponse(w, err)
return
}
}
// LoadUserHandler - reloads a user on the server.
func (s *peerRESTServer) LoadUserHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
vars := mux.Vars(r)
accessKey := vars[peerRESTUser]
if accessKey == "" {
s.writeErrorResponse(w, errors.New("username is missing"))
return
}
temp, err := strconv.ParseBool(vars[peerRESTUserTemp])
if err != nil {
s.writeErrorResponse(w, err)
return
}
userType := regUser
if temp {
userType = stsUser
}
if err = globalIAMSys.LoadUser(r.Context(), objAPI, accessKey, userType); err != nil {
s.writeErrorResponse(w, err)
return
}
}
// LoadGroupHandler - reloads group along with members list.
func (s *peerRESTServer) LoadGroupHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
vars := mux.Vars(r)
group := vars[peerRESTGroup]
err := globalIAMSys.LoadGroup(r.Context(), objAPI, group)
if err != nil {
s.writeErrorResponse(w, err)
return
}
}
// StartProfilingHandler - Issues the start profiling command.
func (s *peerRESTServer) StartProfilingHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
vars := mux.Vars(r)
profiles := strings.Split(vars[peerRESTProfiler], ",")
if len(profiles) == 0 {
s.writeErrorResponse(w, errors.New("profiler name is missing"))
return
}
globalProfilerMu.Lock()
defer globalProfilerMu.Unlock()
if globalProfiler == nil {
globalProfiler = make(map[string]minioProfiler, 10)
}
// Stop profiler of all types if already running
for k, v := range globalProfiler {
for _, p := range profiles {
if p == k {
v.Stop()
delete(globalProfiler, k)
}
}
}
for _, profiler := range profiles {
prof, err := startProfiler(profiler)
if err != nil {
s.writeErrorResponse(w, err)
return
}
globalProfiler[profiler] = prof
}
}
// DownloadProfilingDataHandler - returns profiled data.
func (s *peerRESTServer) DownloadProfilingDataHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx := newContext(r, w, "DownloadProfiling")
profileData, err := getProfileData()
if err != nil {
s.writeErrorResponse(w, err)
return
}
logger.LogIf(ctx, gob.NewEncoder(w).Encode(profileData))
}
func (s *peerRESTServer) LocalStorageInfoHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx := newContext(r, w, "LocalStorageInfo")
objLayer := newObjectLayerFn()
if objLayer == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
logger.LogIf(ctx, gob.NewEncoder(w).Encode(objLayer.LocalStorageInfo(r.Context())))
}
// ServerInfoHandler - returns Server Info
func (s *peerRESTServer) ServerInfoHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx := newContext(r, w, "ServerInfo")
info := getLocalServerProperty(globalEndpoints, r)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// GetCPUsHandler - returns CPU info.
func (s *peerRESTServer) GetCPUsHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx, cancel := context.WithCancel(r.Context())
defer cancel()
info := madmin.GetCPUs(ctx, r.Host)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// GetPartitionsHandler - returns disk partition information.
func (s *peerRESTServer) GetPartitionsHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx, cancel := context.WithCancel(r.Context())
defer cancel()
info := madmin.GetPartitions(ctx, r.Host)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// GetOSInfoHandler - returns operating system's information.
func (s *peerRESTServer) GetOSInfoHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx, cancel := context.WithCancel(r.Context())
defer cancel()
info := madmin.GetOSInfo(ctx, r.Host)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// GetProcInfoHandler - returns this MinIO process information.
func (s *peerRESTServer) GetProcInfoHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx, cancel := context.WithCancel(r.Context())
defer cancel()
info := madmin.GetProcInfo(ctx, r.Host)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// GetMemInfoHandler - returns memory information.
func (s *peerRESTServer) GetMemInfoHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx, cancel := context.WithCancel(r.Context())
defer cancel()
info := madmin.GetMemInfo(ctx, r.Host)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// GetMetricsHandler - returns server metrics.
func (s *peerRESTServer) GetMetricsHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
var types madmin.MetricType
if t, _ := strconv.ParseUint(r.Form.Get(peerRESTMetricsTypes), 10, 64); t != 0 {
types = madmin.MetricType(t)
} else {
types = madmin.MetricsAll
}
diskMap := make(map[string]struct{})
for _, disk := range r.Form[peerRESTDisk] {
diskMap[disk] = struct{}{}
}
jobID := r.Form.Get(peerRESTJobID)
depID := r.Form.Get(peerRESTDepID)
ctx, cancel := context.WithCancel(r.Context())
defer cancel()
info := collectLocalMetrics(types, collectMetricsOpts{
disks: diskMap,
jobID: jobID,
depID: depID,
})
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// GetSysConfigHandler - returns system config information.
// (only the config that are of concern to minio)
func (s *peerRESTServer) GetSysConfigHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx, cancel := context.WithCancel(r.Context())
defer cancel()
info := madmin.GetSysConfig(ctx, r.Host)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// GetSysServicesHandler - returns system services information.
// (only the services that are of concern to minio)
func (s *peerRESTServer) GetSysServicesHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx, cancel := context.WithCancel(r.Context())
defer cancel()
info := madmin.GetSysServices(ctx, r.Host)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// GetSysErrorsHandler - returns system level errors
func (s *peerRESTServer) GetSysErrorsHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx, cancel := context.WithCancel(r.Context())
defer cancel()
info := madmin.GetSysErrors(ctx, r.Host)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// DeleteBucketMetadataHandler - Delete in memory bucket metadata
func (s *peerRESTServer) DeleteBucketMetadataHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
vars := mux.Vars(r)
bucketName := vars[peerRESTBucket]
if bucketName == "" {
s.writeErrorResponse(w, errors.New("Bucket name is missing"))
return
}
globalReplicationStats.Delete(bucketName)
globalBucketMetadataSys.Remove(bucketName)
globalBucketTargetSys.Delete(bucketName)
globalEventNotifier.RemoveNotification(bucketName)
globalBucketConnStats.delete(bucketName)
if localMetacacheMgr != nil {
localMetacacheMgr.deleteBucketCache(bucketName)
}
}
// ReloadSiteReplicationConfigHandler - reloads site replication configuration from the disks
func (s *peerRESTServer) ReloadSiteReplicationConfigHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx := newContext(r, w, "LoadSiteReplication")
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
logger.LogIf(r.Context(), globalSiteReplicationSys.Init(ctx, objAPI))
}
// GetAllBucketStatsHandler - fetches bucket replication stats for all buckets from this peer.
func (s *peerRESTServer) GetAllBucketStatsHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
replicationStats := globalReplicationStats.GetAll()
bucketStatsMap := make(map[string]BucketStats, len(replicationStats))
for k, v := range replicationStats {
bucketStatsMap[k] = BucketStats{
ReplicationStats: v,
}
}
logger.LogIf(r.Context(), msgp.Encode(w, &BucketStatsMap{Stats: bucketStatsMap, Timestamp: UTCNow()}))
}
// GetBucketStatsHandler - fetches current in-memory bucket stats, currently only
// returns BucketStats, that currently includes ReplicationStats.
func (s *peerRESTServer) GetBucketStatsHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
vars := mux.Vars(r)
bucketName := vars[peerRESTBucket]
if bucketName == "" {
s.writeErrorResponse(w, errors.New("Bucket name is missing"))
return
}
bs := BucketStats{
ReplicationStats: globalReplicationStats.Get(bucketName),
}
logger.LogIf(r.Context(), msgp.Encode(w, &bs))
}
// LoadBucketMetadataHandler - reloads in memory bucket metadata
func (s *peerRESTServer) LoadBucketMetadataHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
vars := mux.Vars(r)
bucketName := vars[peerRESTBucket]
if bucketName == "" {
s.writeErrorResponse(w, errors.New("Bucket name is missing"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
meta, err := loadBucketMetadata(r.Context(), objAPI, bucketName)
if err != nil {
s.writeErrorResponse(w, err)
return
}
globalBucketMetadataSys.Set(bucketName, meta)
if meta.notificationConfig != nil {
globalEventNotifier.AddRulesMap(bucketName, meta.notificationConfig.ToRulesMap())
}
if meta.bucketTargetConfig != nil {
globalBucketTargetSys.UpdateAllTargets(bucketName, meta.bucketTargetConfig)
}
}
func (s *peerRESTServer) GetMetacacheListingHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx := newContext(r, w, "GetMetacacheListing")
var opts listPathOptions
err := gob.NewDecoder(r.Body).Decode(&opts)
if err != nil && err != io.EOF {
s.writeErrorResponse(w, err)
return
}
resp := localMetacacheMgr.getBucket(ctx, opts.Bucket).findCache(opts)
logger.LogIf(ctx, msgp.Encode(w, &resp))
}
func (s *peerRESTServer) UpdateMetacacheListingHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx := newContext(r, w, "UpdateMetacacheListing")
var req metacache
err := msgp.Decode(r.Body, &req)
if err != nil {
s.writeErrorResponse(w, err)
return
}
cache, err := localMetacacheMgr.updateCacheEntry(req)
if err != nil {
s.writeErrorResponse(w, err)
return
}
// Return updated metadata.
logger.LogIf(ctx, msgp.Encode(w, &cache))
}
// PutBucketNotificationHandler - Set bucket policy.
func (s *peerRESTServer) PutBucketNotificationHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
vars := mux.Vars(r)
bucketName := vars[peerRESTBucket]
if bucketName == "" {
s.writeErrorResponse(w, errors.New("Bucket name is missing"))
return
}
var rulesMap event.RulesMap
if r.ContentLength < 0 {
s.writeErrorResponse(w, errInvalidArgument)
return
}
err := gob.NewDecoder(r.Body).Decode(&rulesMap)
if err != nil {
s.writeErrorResponse(w, err)
return
}
globalEventNotifier.AddRulesMap(bucketName, rulesMap)
}
// Return disk IDs of all the local disks.
func getLocalDiskIDs(z *erasureServerPools) []string {
var ids []string
for poolIdx := range z.serverPools {
for _, set := range z.serverPools[poolIdx].sets {
disks := set.getDisks()
for _, disk := range disks {
if disk == nil {
continue
}
if disk.IsLocal() {
id, err := disk.GetDiskID()
if err != nil {
continue
}
if id == "" {
continue
}
ids = append(ids, id)
}
}
}
}
return ids
}
// HealthHandler - returns true of health
func (s *peerRESTServer) HealthHandler(w http.ResponseWriter, r *http.Request) {
s.IsValid(w, r)
}
// GetLocalDiskIDs - Return disk IDs of all the local disks.
func (s *peerRESTServer) GetLocalDiskIDs(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx := newContext(r, w, "GetLocalDiskIDs")
objLayer := newObjectLayerFn()
// Service not initialized yet
if objLayer == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
z, ok := objLayer.(*erasureServerPools)
if !ok {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
ids := getLocalDiskIDs(z)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(ids))
}
// DownloadBinary - updates the current server.
func (s *peerRESTServer) DownloadBinaryHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
if r.ContentLength < 0 {
s.writeErrorResponse(w, errInvalidArgument)
return
}
var info binaryInfo
err := gob.NewDecoder(r.Body).Decode(&info)
if err != nil {
s.writeErrorResponse(w, err)
return
}
if err = verifyBinary(info.URL, info.Sha256Sum, info.ReleaseInfo, getMinioMode(), info.BinaryFile); err != nil {
s.writeErrorResponse(w, err)
return
}
}
// CommitBinary - overwrites the current binary with the new one.
func (s *peerRESTServer) CommitBinaryHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
if err := commitBinary(); err != nil {
s.writeErrorResponse(w, err)
return
}
}
var errUnsupportedSignal = fmt.Errorf("unsupported signal")
// SignalServiceHandler - signal service handler.
func (s *peerRESTServer) SignalServiceHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
vars := mux.Vars(r)
signalString := vars[peerRESTSignal]
if signalString == "" {
s.writeErrorResponse(w, errors.New("signal name is missing"))
return
}
si, err := strconv.Atoi(signalString)
if err != nil {
s.writeErrorResponse(w, err)
return
}
signal := serviceSignal(si)
switch signal {
case serviceRestart:
globalServiceSignalCh <- signal
case serviceStop:
globalServiceSignalCh <- signal
case serviceFreeze:
freezeServices()
case serviceUnFreeze:
unfreezeServices()
case serviceReloadDynamic:
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
srvCfg, err := getValidConfig(objAPI)
if err != nil {
s.writeErrorResponse(w, err)
return
}
subSys := r.Form.Get(peerRESTSubSys)
// Apply dynamic values.
if subSys == "" {
err = applyDynamicConfig(r.Context(), objAPI, srvCfg)
} else {
err = applyDynamicConfigForSubSys(r.Context(), objAPI, srvCfg, subSys)
}
if err != nil {
s.writeErrorResponse(w, err)
}
return
default:
s.writeErrorResponse(w, errUnsupportedSignal)
return
}
}
// ListenHandler sends http trace messages back to peer rest client
func (s *peerRESTServer) ListenHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
values := r.Form
var prefix string
if len(values[peerRESTListenPrefix]) > 1 {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
if len(values[peerRESTListenPrefix]) == 1 {
if err := event.ValidateFilterRuleValue(values[peerRESTListenPrefix][0]); err != nil {
s.writeErrorResponse(w, err)
return
}
prefix = values[peerRESTListenPrefix][0]
}
var suffix string
if len(values[peerRESTListenSuffix]) > 1 {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
if len(values[peerRESTListenSuffix]) == 1 {
if err := event.ValidateFilterRuleValue(values[peerRESTListenSuffix][0]); err != nil {
s.writeErrorResponse(w, err)
return
}
suffix = values[peerRESTListenSuffix][0]
}
pattern := event.NewPattern(prefix, suffix)
var eventNames []event.Name
var mask pubsub.Mask
for _, ev := range values[peerRESTListenEvents] {
eventName, err := event.ParseName(ev)
if err != nil {
s.writeErrorResponse(w, err)
return
}
mask.MergeMaskable(eventName)
eventNames = append(eventNames, eventName)
}
rulesMap := event.NewRulesMap(eventNames, pattern, event.TargetID{ID: mustGetUUID()})
doneCh := r.Context().Done()
// Listen Publisher uses nonblocking publish and hence does not wait for slow subscribers.
// Use buffered channel to take care of burst sends or slow w.Write()
ch := make(chan event.Event, 2000)
err := globalHTTPListen.Subscribe(mask, ch, doneCh, func(ev event.Event) bool {
if ev.S3.Bucket.Name != "" && values.Get(peerRESTListenBucket) != "" {
if ev.S3.Bucket.Name != values.Get(peerRESTListenBucket) {
return false
}
}
return rulesMap.MatchSimple(ev.EventName, ev.S3.Object.Key)
})
if err != nil {
s.writeErrorResponse(w, err)
return
}
keepAliveTicker := time.NewTicker(500 * time.Millisecond)
defer keepAliveTicker.Stop()
enc := gob.NewEncoder(w)
for {
select {
case ev := <-ch:
if err := enc.Encode(ev); err != nil {
return
}
if len(ch) == 0 {
// Flush if nothing is queued
w.(http.Flusher).Flush()
}
case <-r.Context().Done():
return
case <-keepAliveTicker.C:
if err := enc.Encode(&event.Event{}); err != nil {
return
}
w.(http.Flusher).Flush()
}
}
}
// TraceHandler sends http trace messages back to peer rest client
func (s *peerRESTServer) TraceHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
var traceOpts madmin.ServiceTraceOpts
err := traceOpts.ParseParams(r)
if err != nil {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
// Trace Publisher uses nonblocking publish and hence does not wait for slow subscribers.
// Use buffered channel to take care of burst sends or slow w.Write()
ch := make(chan madmin.TraceInfo, 2000)
err = globalTrace.Subscribe(traceOpts.TraceTypes(), ch, r.Context().Done(), func(entry madmin.TraceInfo) bool {
return shouldTrace(entry, traceOpts)
})
if err != nil {
s.writeErrorResponse(w, err)
return
}
keepAliveTicker := time.NewTicker(500 * time.Millisecond)
defer keepAliveTicker.Stop()
enc := gob.NewEncoder(w)
for {
select {
case entry := <-ch:
if err := enc.Encode(entry); err != nil {
return
}
case <-r.Context().Done():
return
case <-keepAliveTicker.C:
if err := enc.Encode(&madmin.TraceInfo{}); err != nil {
return
}
w.(http.Flusher).Flush()
}
}
}
func (s *peerRESTServer) BackgroundHealStatusHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
ctx := newContext(r, w, "BackgroundHealStatus")
state, ok := getLocalBackgroundHealStatus(ctx, newObjectLayerFn())
if !ok {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
logger.LogIf(ctx, gob.NewEncoder(w).Encode(state))
}
func (s *peerRESTServer) ReloadPoolMetaHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
pools, ok := objAPI.(*erasureServerPools)
if !ok {
return
}
if err := pools.ReloadPoolMeta(r.Context()); err != nil {
s.writeErrorResponse(w, err)
return
}
}
func (s *peerRESTServer) StopRebalanceHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
pools, ok := objAPI.(*erasureServerPools)
if !ok {
s.writeErrorResponse(w, errors.New("not a multiple pools setup"))
return
}
pools.StopRebalance()
}
func (s *peerRESTServer) LoadRebalanceMetaHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
pools, ok := objAPI.(*erasureServerPools)
if !ok {
s.writeErrorResponse(w, errors.New("not a multiple pools setup"))
return
}
startRebalanceStr := r.Form.Get(peerRESTStartRebalance)
startRebalance, err := strconv.ParseBool(startRebalanceStr)
if err != nil {
s.writeErrorResponse(w, err)
return
}
if err := pools.loadRebalanceMeta(r.Context()); err != nil {
s.writeErrorResponse(w, err)
return
}
if startRebalance {
go pools.StartRebalance()
}
}
func (s *peerRESTServer) LoadTransitionTierConfigHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
go func() {
err := globalTierConfigMgr.Reload(context.Background(), newObjectLayerFn())
if err != nil {
logger.LogIf(context.Background(), fmt.Errorf("Failed to reload remote tier config %s", err))
}
}()
}
// ConsoleLogHandler sends console logs of this node back to peer rest client
func (s *peerRESTServer) ConsoleLogHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
doneCh := make(chan struct{})
defer close(doneCh)
ch := make(chan log.Info, 2000)
err := globalConsoleSys.Subscribe(ch, doneCh, "", 0, madmin.LogMaskAll, nil)
if err != nil {
s.writeErrorResponse(w, err)
return
}
keepAliveTicker := time.NewTicker(500 * time.Millisecond)
defer keepAliveTicker.Stop()
enc := gob.NewEncoder(w)
for {
select {
case entry, ok := <-ch:
if !ok {
return
}
if err := enc.Encode(entry); err != nil {
return
}
if len(ch) == 0 {
w.(http.Flusher).Flush()
}
case <-keepAliveTicker.C:
if len(ch) == 0 {
if err := enc.Encode(&madmin.LogInfo{}); err != nil {
return
}
w.(http.Flusher).Flush()
}
case <-r.Context().Done():
return
}
}
}
func (s *peerRESTServer) writeErrorResponse(w http.ResponseWriter, err error) {
w.WriteHeader(http.StatusForbidden)
w.Write([]byte(err.Error()))
}
// IsValid - To authenticate and verify the time difference.
func (s *peerRESTServer) IsValid(w http.ResponseWriter, r *http.Request) bool {
if err := storageServerRequestValidate(r); err != nil {
s.writeErrorResponse(w, err)
return false
}
return true
}
// GetBandwidth gets the bandwidth for the buckets requested.
func (s *peerRESTServer) GetBandwidth(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
bucketsString := r.Form.Get("buckets")
doneCh := make(chan struct{})
defer close(doneCh)
selectBuckets := b.SelectBuckets(strings.Split(bucketsString, ",")...)
report := globalBucketMonitor.GetReport(selectBuckets)
enc := gob.NewEncoder(w)
if err := enc.Encode(report); err != nil {
s.writeErrorResponse(w, errors.New("Encoding report failed: "+err.Error()))
return
}
}
// GetPeerMetrics gets the metrics to be federated across peers.
func (s *peerRESTServer) GetPeerMetrics(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
}
enc := gob.NewEncoder(w)
for m := range ReportMetrics(r.Context(), peerMetricsGroups) {
if err := enc.Encode(m); err != nil {
s.writeErrorResponse(w, errors.New("Encoding metric failed: "+err.Error()))
return
}
}
}
func (s *peerRESTServer) SpeedTestHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
sizeStr := r.Form.Get(peerRESTSize)
durationStr := r.Form.Get(peerRESTDuration)
concurrentStr := r.Form.Get(peerRESTConcurrent)
storageClass := r.Form.Get(peerRESTStorageClass)
bucketName := r.Form.Get(peerRESTBucket)
size, err := strconv.Atoi(sizeStr)
if err != nil {
size = 64 * humanize.MiByte
}
concurrent, err := strconv.Atoi(concurrentStr)
if err != nil {
concurrent = 32
}
duration, err := time.ParseDuration(durationStr)
if err != nil {
duration = time.Second * 10
}
done := keepHTTPResponseAlive(w)
result, err := selfSpeedTest(r.Context(), speedTestOpts{
objectSize: size,
concurrency: concurrent,
duration: duration,
storageClass: storageClass,
bucketName: bucketName,
})
if err != nil {
result.Error = err.Error()
}
done(nil)
logger.LogIf(r.Context(), gob.NewEncoder(w).Encode(result))
}
// GetLastDayTierStatsHandler - returns per-tier stats in the last 24hrs for this server
func (s *peerRESTServer) GetLastDayTierStatsHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
ctx := newContext(r, w, "GetLastDayTierStats")
if objAPI := newObjectLayerFn(); objAPI == nil || globalTransitionState == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
result := globalTransitionState.getDailyAllTierStats()
logger.LogIf(ctx, gob.NewEncoder(w).Encode(result))
}
func (s *peerRESTServer) DriveSpeedTestHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
objAPI := newObjectLayerFn()
if objAPI == nil {
s.writeErrorResponse(w, errServerNotInitialized)
return
}
serial := r.Form.Get("serial") == "true"
blockSizeStr := r.Form.Get("blocksize")
fileSizeStr := r.Form.Get("filesize")
blockSize, err := strconv.ParseUint(blockSizeStr, 10, 64)
if err != nil {
blockSize = 4 * humanize.MiByte // default value
}
fileSize, err := strconv.ParseUint(fileSizeStr, 10, 64)
if err != nil {
fileSize = 1 * humanize.GiByte // default value
}
opts := madmin.DriveSpeedTestOpts{
Serial: serial,
BlockSize: blockSize,
FileSize: fileSize,
}
done := keepHTTPResponseAlive(w)
result := driveSpeedTest(r.Context(), opts)
done(nil)
logger.LogIf(r.Context(), gob.NewEncoder(w).Encode(result))
}
// DevNull - everything goes to io.Discard
func (s *peerRESTServer) DevNull(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
globalNetPerfRX.Connect()
defer globalNetPerfRX.Disconnect()
connectTime := time.Now()
ctx := newContext(r, w, "DevNull")
for {
n, err := io.CopyN(io.Discard, r.Body, 128*humanize.KiByte)
atomic.AddUint64(&globalNetPerfRX.RX, uint64(n))
if err != nil && err != io.EOF {
// If there is a disconnection before globalNetPerfMinDuration (we give a margin of error of 1 sec)
// would mean the network is not stable. Logging here will help in debugging network issues.
if time.Since(connectTime) < (globalNetPerfMinDuration - time.Second) {
logger.LogIf(ctx, err)
}
}
if err != nil {
break
}
}
}
// NetSpeedTestHandlers - perform network speedtest
func (s *peerRESTServer) NetSpeedTestHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("invalid request"))
return
}
durationStr := r.Form.Get(peerRESTDuration)
duration, err := time.ParseDuration(durationStr)
if err != nil || duration.Seconds() == 0 {
duration = time.Second * 10
}
result := netperf(r.Context(), duration.Round(time.Second))
logger.LogIf(r.Context(), gob.NewEncoder(w).Encode(result))
}
// registerPeerRESTHandlers - register peer rest router.
func registerPeerRESTHandlers(router *mux.Router) {
server := &peerRESTServer{}
subrouter := router.PathPrefix(peerRESTPrefix).Subrouter()
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodHealth).HandlerFunc(httpTraceHdrs(server.HealthHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodGetLocks).HandlerFunc(httpTraceHdrs(server.GetLocksHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodServerInfo).HandlerFunc(httpTraceHdrs(server.ServerInfoHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodLocalStorageInfo).HandlerFunc(httpTraceHdrs(server.LocalStorageInfoHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodProcInfo).HandlerFunc(httpTraceHdrs(server.GetProcInfoHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodMemInfo).HandlerFunc(httpTraceHdrs(server.GetMemInfoHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodMetrics).HandlerFunc(httpTraceHdrs(server.GetMetricsHandler)).Queries(restQueries(peerRESTMetricsTypes)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodSysErrors).HandlerFunc(httpTraceHdrs(server.GetSysErrorsHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodSysServices).HandlerFunc(httpTraceHdrs(server.GetSysServicesHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodSysConfig).HandlerFunc(httpTraceHdrs(server.GetSysConfigHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodOsInfo).HandlerFunc(httpTraceHdrs(server.GetOSInfoHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDiskHwInfo).HandlerFunc(httpTraceHdrs(server.GetPartitionsHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodCPUInfo).HandlerFunc(httpTraceHdrs(server.GetCPUsHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodGetAllBucketStats).HandlerFunc(httpTraceHdrs(server.GetAllBucketStatsHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDeleteBucketMetadata).HandlerFunc(httpTraceHdrs(server.DeleteBucketMetadataHandler)).Queries(restQueries(peerRESTBucket)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodLoadBucketMetadata).HandlerFunc(httpTraceHdrs(server.LoadBucketMetadataHandler)).Queries(restQueries(peerRESTBucket)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodGetBucketStats).HandlerFunc(httpTraceHdrs(server.GetBucketStatsHandler)).Queries(restQueries(peerRESTBucket)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodSignalService).HandlerFunc(httpTraceHdrs(server.SignalServiceHandler)).Queries(restQueries(peerRESTSignal)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDownloadBinary).HandlerFunc(httpTraceHdrs(server.DownloadBinaryHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodCommitBinary).HandlerFunc(httpTraceHdrs(server.CommitBinaryHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDeletePolicy).HandlerFunc(httpTraceAll(server.DeletePolicyHandler)).Queries(restQueries(peerRESTPolicy)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodLoadPolicy).HandlerFunc(httpTraceAll(server.LoadPolicyHandler)).Queries(restQueries(peerRESTPolicy)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodLoadPolicyMapping).HandlerFunc(httpTraceAll(server.LoadPolicyMappingHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDeleteUser).HandlerFunc(httpTraceAll(server.DeleteUserHandler)).Queries(restQueries(peerRESTUser)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDeleteServiceAccount).HandlerFunc(httpTraceAll(server.DeleteServiceAccountHandler)).Queries(restQueries(peerRESTUser)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodLoadUser).HandlerFunc(httpTraceAll(server.LoadUserHandler)).Queries(restQueries(peerRESTUser, peerRESTUserTemp)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodLoadServiceAccount).HandlerFunc(httpTraceAll(server.LoadServiceAccountHandler)).Queries(restQueries(peerRESTUser)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodLoadGroup).HandlerFunc(httpTraceAll(server.LoadGroupHandler)).Queries(restQueries(peerRESTGroup)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodStartProfiling).HandlerFunc(httpTraceAll(server.StartProfilingHandler)).Queries(restQueries(peerRESTProfiler)...)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDownloadProfilingData).HandlerFunc(httpTraceHdrs(server.DownloadProfilingDataHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodTrace).HandlerFunc(server.TraceHandler)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodListen).HandlerFunc(httpTraceHdrs(server.ListenHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodBackgroundHealStatus).HandlerFunc(server.BackgroundHealStatusHandler)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodLog).HandlerFunc(server.ConsoleLogHandler)
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodGetLocalDiskIDs).HandlerFunc(httpTraceHdrs(server.GetLocalDiskIDs))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodGetBandwidth).HandlerFunc(httpTraceHdrs(server.GetBandwidth))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodGetMetacacheListing).HandlerFunc(httpTraceHdrs(server.GetMetacacheListingHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodUpdateMetacacheListing).HandlerFunc(httpTraceHdrs(server.UpdateMetacacheListingHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodGetPeerMetrics).HandlerFunc(httpTraceHdrs(server.GetPeerMetrics))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodLoadTransitionTierConfig).HandlerFunc(httpTraceHdrs(server.LoadTransitionTierConfigHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodSpeedTest).HandlerFunc(httpTraceHdrs(server.SpeedTestHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDriveSpeedTest).HandlerFunc(httpTraceHdrs(server.DriveSpeedTestHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodNetperf).HandlerFunc(httpTraceHdrs(server.NetSpeedTestHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDevNull).HandlerFunc(httpTraceHdrs(server.DevNull))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodReloadSiteReplicationConfig).HandlerFunc(httpTraceHdrs(server.ReloadSiteReplicationConfigHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodReloadPoolMeta).HandlerFunc(httpTraceHdrs(server.ReloadPoolMetaHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodLoadRebalanceMeta).HandlerFunc(httpTraceHdrs(server.LoadRebalanceMetaHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodStopRebalance).HandlerFunc(httpTraceHdrs(server.StopRebalanceHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodGetLastDayTierStats).HandlerFunc(httpTraceHdrs(server.GetLastDayTierStatsHandler))
}