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9531cddb06
Two handlers are added to admin API to enable profiling and disable
profiling of a server in a standalone mode, or all nodes in the
distributed mode.
/minio/admin/profiling/start/{cpu,block,mem}:
- Start profiling and return starting JSON results, e.g. one
node is offline.
/minio/admin/profiling/download:
- Stop the on-going profiling task
- Stream a zip file which contains all profiling files that can
be later inspected by go tool pprof
124 lines
3.1 KiB
Go
124 lines
3.1 KiB
Go
/*
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* Minio Cloud Storage, (C) 2018 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"os"
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"io/ioutil"
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)
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// localAdminClient - represents admin operation to be executed locally.
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type localAdminClient struct{}
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// SignalService - sends a restart or stop signal to the local server
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func (lc localAdminClient) SignalService(s serviceSignal) error {
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switch s {
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case serviceRestart, serviceStop:
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globalServiceSignalCh <- s
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default:
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return errUnsupportedSignal
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}
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return nil
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}
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// ReInitFormat - re-initialize disk format.
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func (lc localAdminClient) ReInitFormat(dryRun bool) error {
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objectAPI := newObjectLayerFn()
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if objectAPI == nil {
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return errServerNotInitialized
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}
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return objectAPI.ReloadFormat(context.Background(), dryRun)
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}
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// ServerInfo - Returns the server info of this server.
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func (lc localAdminClient) ServerInfo() (sid ServerInfoData, e error) {
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if globalBootTime.IsZero() {
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return sid, errServerNotInitialized
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}
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// Build storage info
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objLayer := newObjectLayerFn()
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if objLayer == nil {
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return sid, errServerNotInitialized
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}
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storage := objLayer.StorageInfo(context.Background())
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return ServerInfoData{
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StorageInfo: storage,
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ConnStats: globalConnStats.toServerConnStats(),
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HTTPStats: globalHTTPStats.toServerHTTPStats(),
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Properties: ServerProperties{
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Uptime: UTCNow().Sub(globalBootTime),
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Version: Version,
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CommitID: CommitID,
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SQSARN: globalNotificationSys.GetARNList(),
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Region: globalServerConfig.GetRegion(),
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},
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}, nil
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}
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// GetConfig - returns config.json of the local server.
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func (lc localAdminClient) GetConfig() ([]byte, error) {
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if globalServerConfig == nil {
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return nil, fmt.Errorf("config not present")
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}
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return json.Marshal(globalServerConfig)
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}
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// StartProfiling - starts profiling on the local server.
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func (lc localAdminClient) StartProfiling(profiler string) error {
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if globalProfiler != nil {
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globalProfiler.Stop()
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}
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prof, err := startProfiler(profiler, "")
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if err != nil {
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return err
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}
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globalProfiler = prof
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return nil
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}
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// DownloadProfilingData - stops and returns profiling data of the local server.
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func (lc localAdminClient) DownloadProfilingData() ([]byte, error) {
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if globalProfiler == nil {
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return nil, errors.New("profiler not enabled")
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}
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profilerPath := globalProfiler.Path()
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// Stop the profiler
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globalProfiler.Stop()
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profilerFile, err := os.Open(profilerPath)
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if err != nil {
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return nil, err
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}
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data, err := ioutil.ReadAll(profilerFile)
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if err != nil {
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return nil, err
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}
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return data, nil
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}
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