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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.
89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
/*
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* MinIO Cloud Storage, (C) 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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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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"strings"
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)
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// LogInfo holds console log messages
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type LogInfo struct {
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logEntry
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ConsoleMsg string
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NodeName string `json:"node"`
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Err error `json:"-"`
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}
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// SendLog returns true if log pertains to node specified in args.
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func (l LogInfo) SendLog(node, logKind string) bool {
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nodeFltr := (node == "" || strings.EqualFold(node, l.NodeName))
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typeFltr := strings.EqualFold(logKind, "all") || strings.EqualFold(l.LogKind, logKind)
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return nodeFltr && typeFltr
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}
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// GetLogs - listen on console log messages.
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func (adm AdminClient) GetLogs(ctx context.Context, node string, lineCnt int, logKind string) <-chan LogInfo {
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logCh := make(chan LogInfo, 1)
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// Only success, start a routine to start reading line by line.
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go func(logCh chan<- LogInfo) {
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defer close(logCh)
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urlValues := make(url.Values)
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urlValues.Set("node", node)
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urlValues.Set("limit", strconv.Itoa(lineCnt))
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urlValues.Set("logType", logKind)
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for {
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reqData := requestData{
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relPath: adminAPIPrefix + "/log",
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queryValues: urlValues,
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}
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// Execute GET to call log 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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logCh <- LogInfo{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 LogInfo
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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 logCh <- info:
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}
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}
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}
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}(logCh)
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// Returns the log info channel, for caller to start reading from.
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return logCh
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}
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