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
104 lines
2.7 KiB
Go
104 lines
2.7 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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)
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// ProfilerType represents the profiler type
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// passed to the profiler subsystem, currently
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// it can be only "cpu", "mem" or "block"
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type ProfilerType string
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const (
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// ProfilerCPU represents CPU profiler type
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ProfilerCPU = ProfilerType("cpu")
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// ProfilerMEM represents MEM profiler type
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ProfilerMEM = ProfilerType("mem")
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// ProfilerBlock represents Block profiler type
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ProfilerBlock = ProfilerType("block")
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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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path := fmt.Sprintf("/v1/profiling/start/%s", profiler)
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resp, err := adm.executeMethod("POST", requestData{
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relPath: path,
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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("/v1/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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closeResponse(resp)
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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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