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Copy pathapi-log.go
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80 lines (72 loc) · 1.96 KB
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/*
* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package madmin
import (
"context"
"encoding/json"
"net/http"
"net/url"
"strconv"
)
// LogInfo holds console log messages
type LogInfo struct {
logEntry
ConsoleMsg string
NodeName string `json:"node"`
Err error `json:"-"`
}
// GetLogs - listen on console log messages.
func (adm AdminClient) GetLogs(ctx context.Context, node string, lineCnt int, logKind string) <-chan LogInfo {
logCh := make(chan LogInfo, 1)
// Only success, start a routine to start reading line by line.
go func(logCh chan<- LogInfo) {
defer close(logCh)
urlValues := make(url.Values)
urlValues.Set("node", node)
urlValues.Set("limit", strconv.Itoa(lineCnt))
urlValues.Set("logType", logKind)
for {
reqData := requestData{
relPath: adminAPIPrefix + "/log",
queryValues: urlValues,
}
// Execute GET to call log handler
resp, err := adm.executeMethod(ctx, http.MethodGet, reqData)
if err != nil {
closeResponse(resp)
return
}
if resp.StatusCode != http.StatusOK {
logCh <- LogInfo{Err: httpRespToErrorResponse(resp)}
return
}
dec := json.NewDecoder(resp.Body)
for {
var info LogInfo
if err = dec.Decode(&info); err != nil {
break
}
select {
case <-ctx.Done():
return
case logCh <- info:
}
}
}
}(logCh)
// Returns the log info channel, for caller to start reading from.
return logCh
}