forked from kubernetes-retired/heapster
/
gcl.go
97 lines (84 loc) · 2.61 KB
/
gcl.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
// Copyright 2015 Google Inc. All Rights Reserved.
//
// 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 gcl
import (
"fmt"
"net/url"
"time"
gce_util "k8s.io/heapster/common/gce"
"k8s.io/heapster/events/core"
"github.com/golang/glog"
"golang.org/x/oauth2"
"golang.org/x/oauth2/google"
gcl "google.golang.org/api/logging/v2beta1"
gce "google.golang.org/cloud/compute/metadata"
)
const (
monitoredResourceType = "global"
logName = "kubernetes.io/events"
loggingSeverity = "NOTICE"
)
type gclSink struct {
project string
gclService *gcl.Service
}
func (sink *gclSink) ExportEvents(eventBatch *core.EventBatch) {
if len(eventBatch.Events) == 0 {
glog.V(4).Info("Not events to export")
return
}
glog.V(4).Info("Exporting events")
entries := make([]*gcl.LogEntry, len(eventBatch.Events))
for i, event := range eventBatch.Events {
entries[i] = &gcl.LogEntry{
LogName: fmt.Sprintf("projects/%s/logs/%s", sink.project, url.QueryEscape(logName)),
Timestamp: event.LastTimestamp.Time.UTC().Format(time.RFC3339),
Severity: loggingSeverity,
Resource: &gcl.MonitoredResource{Type: monitoredResourceType},
InsertId: string(event.UID),
JsonPayload: *event,
}
}
req := &gcl.WriteLogEntriesRequest{Entries: entries}
if _, err := sink.gclService.Entries.Write(req).Do(); err != nil {
glog.Errorf("Error while exporting events to GCL: %v", err)
} else {
glog.V(4).Infof("Sucessfully exported %d events", len(entries))
}
}
func (sink *gclSink) Name() string {
return "GCL Sink"
}
func (sink *gclSink) Stop() {
// nothing needs to be done.
}
func CreateGCLSink(uri *url.URL) (core.EventSink, error) {
if err := gce_util.EnsureOnGCE(); err != nil {
return nil, err
}
// Detect project ID
projectId, err := gce.ProjectID()
if err != nil {
return nil, err
}
// Create Google Cloud Logging service.
client := oauth2.NewClient(oauth2.NoContext, google.ComputeTokenSource(""))
gclService, err := gcl.New(client)
if err != nil {
return nil, err
}
sink := &gclSink{project: projectId, gclService: gclService}
glog.Info("created GCL sink")
return sink, nil
}