minio/cmd/peer-rest-server.go
Harshavardhana 2420f6c000
fix: make metrics endpoint responsive by reducing the chatter (#15055)
peerOnlineCounter was making NxN calls to many peers, this
can be really long and tedious if there are random servers
that are going down.

Instead we should calculate online peers from the point of
view of "self" and return those online and offline appropriately
by performing a healthcheck.
2022-06-08 02:43:13 -07:00

1384 lines
41 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"
"io/ioutil"
"net/http"
"strconv"
"strings"
"sync/atomic"
"time"
"github.com/dustin/go-humanize"
"github.com/gorilla/mux"
"github.com/minio/madmin-go"
b "github.com/minio/minio/internal/bucket/bandwidth"
"github.com/minio/minio/internal/event"
"github.com/minio/minio/internal/logger"
"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
}
vars := mux.Vars(r)
userOrGroup := vars[peerRESTUserOrGroup]
if userOrGroup == "" {
s.writeErrorResponse(w, errors.New("user-or-group is missing"))
return
}
_, isGroup := r.Form[peerRESTIsGroup]
if err := globalIAMSys.LoadPolicyMapping(r.Context(), objAPI, userOrGroup, 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))
}
// 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))
}
func (s *peerRESTServer) NetInfoHandler(w http.ResponseWriter, r *http.Request) {
ctx := newContext(r, w, "NetInfo")
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
// Use this trailer to send additional headers after sending body
w.Header().Set("Trailer", "FinalStatus")
w.Header().Set("Content-Type", "application/octet-stream")
w.WriteHeader(http.StatusOK)
n, err := io.Copy(ioutil.Discard, r.Body)
if err == io.ErrUnexpectedEOF {
w.Header().Set("FinalStatus", err.Error())
return
}
if err != nil && err != io.EOF {
logger.LogIf(ctx, err)
w.Header().Set("FinalStatus", err.Error())
return
}
if n != r.ContentLength {
err := fmt.Errorf("Subnet health: short read: expected %d found %d", r.ContentLength, n)
logger.LogIf(ctx, err)
w.Header().Set("FinalStatus", err.Error())
return
}
w.Header().Set("FinalStatus", "Success")
}
func (s *peerRESTServer) DispatchNetInfoHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
done := keepHTTPResponseAlive(w)
ctx := newContext(r, w, "DispatchNetInfo")
info := globalNotificationSys.GetNetPerfInfo(ctx)
done(nil)
logger.LogIf(ctx, gob.NewEncoder(w).Encode(info))
}
// GetDrivePerfInfosHandler - returns all disk's serial/parallal performance information.
func (s *peerRESTServer) GetDrivePerfInfosHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx, cancel := context.WithCancel(newContext(r, w, "DriveInfo"))
defer cancel()
info := getDrivePerfInfos(ctx, r.Host)
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))
}
// 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)
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(bucketStatsMap)))
}
// 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 {
globalNotificationSys.AddRulesMap(bucketName, meta.notificationConfig.ToRulesMap())
}
if meta.bucketTargetConfig != nil {
globalBucketTargetSys.UpdateAllTargets(bucketName, meta.bucketTargetConfig)
}
}
// CycleServerBloomFilterHandler cycles bloom filter on server.
func (s *peerRESTServer) CycleServerBloomFilterHandler(w http.ResponseWriter, r *http.Request) {
if !s.IsValid(w, r) {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
ctx := newContext(r, w, "CycleServerBloomFilter")
var req bloomFilterRequest
err := gob.NewDecoder(r.Body).Decode(&req)
if err != nil {
s.writeErrorResponse(w, err)
return
}
bf, err := intDataUpdateTracker.cycleFilter(ctx, req)
if err != nil {
s.writeErrorResponse(w, err)
return
}
logger.LogIf(ctx, gob.NewEncoder(w).Encode(bf))
}
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
}
globalNotificationSys.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))
}
// ServerUpdateHandler - updates the current server.
func (s *peerRESTServer) ServerUpdateHandler(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 serverUpdateInfo
err := gob.NewDecoder(r.Body).Decode(&info)
if err != nil {
s.writeErrorResponse(w, err)
return
}
if _, err = updateServer(info.URL, info.Sha256Sum, info.Time, info.ReleaseInfo, getMinioMode()); 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
for _, ev := range values[peerRESTListenEvents] {
eventName, err := event.ParseName(ev)
if err != nil {
s.writeErrorResponse(w, err)
return
}
eventNames = append(eventNames, eventName)
}
rulesMap := event.NewRulesMap(eventNames, pattern, event.TargetID{ID: mustGetUUID()})
doneCh := make(chan struct{})
defer close(doneCh)
// 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 interface{}, 2000)
listenFn := func(evI interface{}) bool {
ev, ok := evI.(event.Event)
if !ok {
return false
}
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)
}
err := globalHTTPListen.Subscribe(ch, doneCh, listenFn)
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
}
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()
}
}
}
func extractTraceOptsFromPeerRequest(r *http.Request) (opts madmin.ServiceTraceOpts, err error) {
opts.S3 = r.Form.Get(peerRESTTraceS3) == "true"
opts.OS = r.Form.Get(peerRESTTraceOS) == "true"
opts.Storage = r.Form.Get(peerRESTTraceStorage) == "true"
opts.Internal = r.Form.Get(peerRESTTraceInternal) == "true"
opts.OnlyErrors = r.Form.Get(peerRESTTraceErr) == "true"
if t := r.Form.Get(peerRESTTraceThreshold); t != "" {
d, err := time.ParseDuration(t)
if err != nil {
return opts, err
}
opts.Threshold = d
}
return
}
// 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
}
traceOpts, err := extractTraceOptsFromPeerRequest(r)
if err != nil {
s.writeErrorResponse(w, errors.New("Invalid request"))
return
}
doneCh := make(chan struct{})
defer close(doneCh)
// 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 interface{}, 2000)
traceFn := func(entry interface{}) bool {
return mustTrace(entry, traceOpts)
}
err = globalTrace.Subscribe(ch, doneCh, traceFn)
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
}
w.(http.Flusher).Flush()
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 := getBackgroundHealStatus(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) 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 interface{}, 2000)
err := globalConsoleSys.Subscribe(ch, doneCh, "", 0, string(logger.All), 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 := <-ch:
if err := enc.Encode(entry); err != nil {
return
}
w.(http.Flusher).Flush()
case <-keepAliveTicker.C:
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)
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(), size, concurrent, duration, storageClass)
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
}
}
}
// Netperf - perform netperf
func (s *peerRESTServer) Netperf(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 + peerRESTMethodProcInfo).HandlerFunc(httpTraceHdrs(server.GetProcInfoHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodMemInfo).HandlerFunc(httpTraceHdrs(server.GetMemInfoHandler))
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 + peerRESTMethodDriveInfo).HandlerFunc(httpTraceHdrs(server.GetDrivePerfInfosHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodNetInfo).HandlerFunc(httpTraceHdrs(server.NetInfoHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodDispatchNetInfo).HandlerFunc(httpTraceHdrs(server.DispatchNetInfoHandler))
subrouter.Methods(http.MethodPost).Path(peerRESTVersionPrefix + peerRESTMethodCycleBloom).HandlerFunc(httpTraceHdrs(server.CycleServerBloomFilterHandler))
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 + peerRESTMethodServerUpdate).HandlerFunc(httpTraceHdrs(server.ServerUpdateHandler))
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)).Queries(restQueries(peerRESTUserOrGroup)...)
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.Netperf))
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 + peerRESTMethodGetLastDayTierStats).HandlerFunc(httpTraceHdrs(server.GetLastDayTierStatsHandler))
}