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ae654831aa
This is to improve responsiveness for all admin API operations and allowing callers to cancel any on-going admin operations, if they happen to be waiting too long.
124 lines
3.2 KiB
Go
124 lines
3.2 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2016-2019 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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"context"
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"encoding/json"
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"net/http"
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"net/url"
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"strconv"
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trace "github.com/minio/minio/pkg/trace"
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)
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// ServiceRestart - restarts the MinIO cluster
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func (adm *AdminClient) ServiceRestart(ctx context.Context) error {
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return adm.serviceCallAction(ctx, ServiceActionRestart)
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}
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// ServiceStop - stops the MinIO cluster
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func (adm *AdminClient) ServiceStop(ctx context.Context) error {
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return adm.serviceCallAction(ctx, ServiceActionStop)
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}
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// ServiceAction - type to restrict service-action values
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type ServiceAction string
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const (
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// ServiceActionRestart represents restart action
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ServiceActionRestart ServiceAction = "restart"
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// ServiceActionStop represents stop action
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ServiceActionStop = "stop"
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)
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// serviceCallAction - call service restart/update/stop API.
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func (adm *AdminClient) serviceCallAction(ctx context.Context, action ServiceAction) error {
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queryValues := url.Values{}
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queryValues.Set("action", string(action))
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// Request API to Restart server
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resp, err := adm.executeMethod(ctx,
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http.MethodPost, requestData{
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relPath: adminAPIPrefix + "/service",
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queryValues: queryValues,
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},
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)
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defer closeResponse(resp)
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if err != nil {
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return err
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}
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if resp.StatusCode != http.StatusOK {
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return httpRespToErrorResponse(resp)
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}
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return nil
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}
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// ServiceTraceInfo holds http trace
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type ServiceTraceInfo struct {
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Trace trace.Info
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Err error `json:"-"`
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}
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// ServiceTrace - listen on http trace notifications.
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func (adm AdminClient) ServiceTrace(ctx context.Context, allTrace, errTrace bool) <-chan ServiceTraceInfo {
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traceInfoCh := make(chan ServiceTraceInfo)
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// Only success, start a routine to start reading line by line.
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go func(traceInfoCh chan<- ServiceTraceInfo) {
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defer close(traceInfoCh)
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for {
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urlValues := make(url.Values)
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urlValues.Set("all", strconv.FormatBool(allTrace))
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urlValues.Set("err", strconv.FormatBool(errTrace))
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reqData := requestData{
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relPath: adminAPIPrefix + "/trace",
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queryValues: urlValues,
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}
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// Execute GET to call trace handler
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resp, err := adm.executeMethod(ctx, http.MethodGet, reqData)
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if err != nil {
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closeResponse(resp)
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return
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}
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if resp.StatusCode != http.StatusOK {
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traceInfoCh <- ServiceTraceInfo{Err: httpRespToErrorResponse(resp)}
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return
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}
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dec := json.NewDecoder(resp.Body)
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for {
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var info trace.Info
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if err = dec.Decode(&info); err != nil {
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break
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}
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select {
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case <-ctx.Done():
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return
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case traceInfoCh <- ServiceTraceInfo{Trace: info}:
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}
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}
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}
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}(traceInfoCh)
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// Returns the trace info channel, for caller to start reading from.
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return traceInfoCh
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}
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