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// This file is part of MinIO Console Server
// Copyright (c) 2021 MinIO, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package restapi
import (
"context"
"encoding/json"
"strings"
"time"
"github.com/gorilla/websocket"
"github.com/minio/madmin-go/v2"
)
const logTimeFormat string = "15:04:05 MST 01/02/2006"
// startConsoleLog starts log of the servers
func startConsoleLog(ctx context.Context, conn WSConn, client MinioAdmin, logRequest LogRequest) error {
var node string
// name of node, default = "" (all)
if logRequest.node == "all" {
node = ""
} else {
node = logRequest.node
}
trimNode := strings.Split(node, ":")
// number of log lines
lineCount := 100
// type of logs "minio"|"application"|"all" default = "all"
var logKind string
if logRequest.logType == "minio" || logRequest.logType == "application" || logRequest.logType == "all" {
logKind = logRequest.logType
} else {
logKind = "all"
}
// Start listening on all Console Log activity.
logCh := client.getLogs(ctx, trimNode[0], lineCount, logKind)
for {
select {
case <-ctx.Done():
return nil
case logInfo, ok := <-logCh:
// zero value returned because the channel is closed and empty
if !ok {
return nil
}
if logInfo.Err != nil {
LogError("error on console logs: %v", logInfo.Err)
return logInfo.Err
}
// Serialize message to be sent
bytes, err := json.Marshal(serializeConsoleLogInfo(&logInfo))
if err != nil {
LogError("error on json.Marshal: %v", err)
return err
}
// Send Message through websocket connection
err = conn.writeMessage(websocket.TextMessage, bytes)
if err != nil {
LogError("error writeMessage: %v", err)
return err
}
}
}
}
func serializeConsoleLogInfo(l *madmin.LogInfo) (logInfo madmin.LogInfo) {
logInfo = *l
if logInfo.ConsoleMsg != "" {
logInfo.ConsoleMsg = strings.TrimPrefix(logInfo.ConsoleMsg, "\n")
}
if logInfo.Time != "" {
logInfo.Time = getLogTime(logInfo.Time)
}
return logInfo
}
func getLogTime(lt string) string {
tm, err := time.Parse(time.RFC3339Nano, lt)
if err != nil {
return lt
}
return tm.Format(logTimeFormat)
}
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