c7178d2066
For 'snapshot' type profiles, record a 'before' profile that can be used as `go tool pprof -base=before ...` to compare before and after. "Before" profiles are included in the zipped package. [`runtime.MemProfileRate`](https://golang.org/pkg/runtime/#pkg-variables) should not be updated while the application is running, so we set it at startup. Co-authored-by: Harshavardhana <harsha@minio.io>
107 lines
2.9 KiB
Go
107 lines
2.9 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2017, 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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*/
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package madmin
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import (
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"net/url"
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)
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// ProfilerType represents the profiler type
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// passed to the profiler subsystem.
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type ProfilerType string
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// Different supported profiler types.
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const (
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ProfilerCPU ProfilerType = "cpu" // represents CPU profiler type
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ProfilerMEM ProfilerType = "mem" // represents MEM profiler type
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ProfilerBlock ProfilerType = "block" // represents Block profiler type
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ProfilerMutex ProfilerType = "mutex" // represents Mutex profiler type
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ProfilerTrace ProfilerType = "trace" // represents Trace profiler type
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ProfilerThreads ProfilerType = "threads" // represents ThreadCreate profiler type
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)
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// StartProfilingResult holds the result of starting
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// profiler result in a given node.
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type StartProfilingResult struct {
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NodeName string `json:"nodeName"`
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Success bool `json:"success"`
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Error string `json:"error"`
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}
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// StartProfiling makes an admin call to remotely start profiling on a standalone
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// server or the whole cluster in case of a distributed setup.
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func (adm *AdminClient) StartProfiling(profiler ProfilerType) ([]StartProfilingResult, error) {
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v := url.Values{}
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v.Set("profilerType", string(profiler))
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resp, err := adm.executeMethod("POST", requestData{
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relPath: adminAPIPrefix + "/profiling/start",
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queryValues: v,
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})
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defer closeResponse(resp)
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if err != nil {
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return nil, err
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}
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if resp.StatusCode != http.StatusOK {
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return nil, httpRespToErrorResponse(resp)
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}
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jsonResult, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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var startResults []StartProfilingResult
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err = json.Unmarshal(jsonResult, &startResults)
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if err != nil {
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return nil, err
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}
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return startResults, nil
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}
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// DownloadProfilingData makes an admin call to download profiling data of a standalone
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// server or of the whole cluster in case of a distributed setup.
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func (adm *AdminClient) DownloadProfilingData() (io.ReadCloser, error) {
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path := fmt.Sprintf(adminAPIPrefix + "/profiling/download")
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resp, err := adm.executeMethod("GET", requestData{
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relPath: path,
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})
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if err != nil {
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closeResponse(resp)
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return nil, err
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}
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if resp.StatusCode != http.StatusOK {
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return nil, httpRespToErrorResponse(resp)
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}
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if resp.Body == nil {
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return nil, errors.New("body is nil")
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}
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return resp.Body, nil
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}
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