github.com/galamsiva2020/kubernetes-heapster-monitoring@v0.0.0-20210823134957-3c1baa7c1e70/events/sinks/log/log_sink.go (about)

     1  // Copyright 2015 Google Inc. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package logsink
    16  
    17  import (
    18  	"bytes"
    19  	"fmt"
    20  
    21  	"github.com/golang/glog"
    22  	"k8s.io/heapster/events/core"
    23  )
    24  
    25  type LogSink struct {
    26  }
    27  
    28  func (this *LogSink) Name() string {
    29  	return "LogSink"
    30  }
    31  
    32  func (this *LogSink) Stop() {
    33  	// Do nothing.
    34  }
    35  
    36  func batchToString(batch *core.EventBatch) string {
    37  	var buffer bytes.Buffer
    38  	buffer.WriteString(fmt.Sprintf("EventBatch     Timestamp: %s\n", batch.Timestamp))
    39  	for _, event := range batch.Events {
    40  		buffer.WriteString(fmt.Sprintf("   %s (cnt:%d): %s\n", event.LastTimestamp, event.Count, event.Message))
    41  	}
    42  	return buffer.String()
    43  }
    44  
    45  func (this *LogSink) ExportEvents(batch *core.EventBatch) {
    46  	glog.Info(batchToString(batch))
    47  }
    48  
    49  func CreateLogSink() (*LogSink, error) {
    50  	return &LogSink{}, nil
    51  }