-
Notifications
You must be signed in to change notification settings - Fork 2.2k
/
processor.go
296 lines (266 loc) · 8.75 KB
/
processor.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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package k8sattributesprocessor // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/k8sattributesprocessor"
import (
"context"
"fmt"
"strconv"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/pdata/pcommon"
"go.opentelemetry.io/collector/pdata/plog"
"go.opentelemetry.io/collector/pdata/pmetric"
"go.opentelemetry.io/collector/pdata/ptrace"
conventions "go.opentelemetry.io/collector/semconv/v1.8.0"
"go.uber.org/zap"
"github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig"
"github.com/open-telemetry/opentelemetry-collector-contrib/processor/k8sattributesprocessor/internal/kube"
)
const (
clientIPLabelName string = "ip"
)
type kubernetesprocessor struct {
cfg component.Config
options []option
telemetrySettings component.TelemetrySettings
logger *zap.Logger
apiConfig k8sconfig.APIConfig
kc kube.Client
passthroughMode bool
rules kube.ExtractionRules
filters kube.Filters
podAssociations []kube.Association
podIgnore kube.Excludes
}
func (kp *kubernetesprocessor) initKubeClient(logger *zap.Logger, kubeClient kube.ClientProvider) error {
if kubeClient == nil {
kubeClient = kube.New
}
if !kp.passthroughMode {
kc, err := kubeClient(logger, kp.apiConfig, kp.rules, kp.filters, kp.podAssociations, kp.podIgnore, nil, nil, nil, nil)
if err != nil {
return err
}
kp.kc = kc
}
return nil
}
func (kp *kubernetesprocessor) Start(_ context.Context, _ component.Host) error {
allOptions := append(createProcessorOpts(kp.cfg), kp.options...)
for _, opt := range allOptions {
if err := opt(kp); err != nil {
kp.telemetrySettings.ReportStatus(component.NewFatalErrorEvent(err))
return nil
}
}
// This might have been set by an option already
if kp.kc == nil {
err := kp.initKubeClient(kp.logger, kubeClientProvider)
if err != nil {
kp.telemetrySettings.ReportStatus(component.NewFatalErrorEvent(err))
return nil
}
}
if !kp.passthroughMode {
go kp.kc.Start()
}
return nil
}
func (kp *kubernetesprocessor) Shutdown(context.Context) error {
if kp.kc == nil {
return nil
}
if !kp.passthroughMode {
kp.kc.Stop()
}
return nil
}
// processTraces process traces and add k8s metadata using resource IP or incoming IP as pod origin.
func (kp *kubernetesprocessor) processTraces(ctx context.Context, td ptrace.Traces) (ptrace.Traces, error) {
rss := td.ResourceSpans()
for i := 0; i < rss.Len(); i++ {
kp.processResource(ctx, rss.At(i).Resource())
}
return td, nil
}
// processMetrics process metrics and add k8s metadata using resource IP, hostname or incoming IP as pod origin.
func (kp *kubernetesprocessor) processMetrics(ctx context.Context, md pmetric.Metrics) (pmetric.Metrics, error) {
rm := md.ResourceMetrics()
for i := 0; i < rm.Len(); i++ {
kp.processResource(ctx, rm.At(i).Resource())
}
return md, nil
}
// processLogs process logs and add k8s metadata using resource IP, hostname or incoming IP as pod origin.
func (kp *kubernetesprocessor) processLogs(ctx context.Context, ld plog.Logs) (plog.Logs, error) {
rl := ld.ResourceLogs()
for i := 0; i < rl.Len(); i++ {
kp.processResource(ctx, rl.At(i).Resource())
}
return ld, nil
}
// processResource adds Pod metadata tags to resource based on pod association configuration
func (kp *kubernetesprocessor) processResource(ctx context.Context, resource pcommon.Resource) {
podIdentifierValue := extractPodID(ctx, resource.Attributes(), kp.podAssociations)
kp.logger.Debug("evaluating pod identifier", zap.Any("value", podIdentifierValue))
for i := range podIdentifierValue {
if podIdentifierValue[i].Source.From == kube.ConnectionSource && podIdentifierValue[i].Value != "" {
if _, found := resource.Attributes().Get(kube.K8sIPLabelName); !found {
resource.Attributes().PutStr(kube.K8sIPLabelName, podIdentifierValue[i].Value)
}
break
}
}
if kp.passthroughMode {
return
}
var pod *kube.Pod
if podIdentifierValue.IsNotEmpty() {
var podFound bool
if pod, podFound = kp.kc.GetPod(podIdentifierValue); podFound {
kp.logger.Debug("getting the pod", zap.Any("pod", pod))
for key, val := range pod.Attributes {
if _, found := resource.Attributes().Get(key); !found {
resource.Attributes().PutStr(key, val)
}
}
kp.addContainerAttributes(resource.Attributes(), pod)
}
}
namespace := getNamespace(pod, resource.Attributes())
if namespace != "" {
attrsToAdd := kp.getAttributesForPodsNamespace(namespace)
for key, val := range attrsToAdd {
if _, found := resource.Attributes().Get(key); !found {
resource.Attributes().PutStr(key, val)
}
}
}
nodeName := getNodeName(pod, resource.Attributes())
if nodeName != "" {
attrsToAdd := kp.getAttributesForPodsNode(nodeName)
for key, val := range attrsToAdd {
if _, found := resource.Attributes().Get(key); !found {
resource.Attributes().PutStr(key, val)
}
}
nodeUID := kp.getUIDForPodsNode(nodeName)
if nodeUID != "" {
if _, found := resource.Attributes().Get(conventions.AttributeK8SNodeUID); !found {
resource.Attributes().PutStr(conventions.AttributeK8SNodeUID, nodeUID)
}
}
}
}
func getNamespace(pod *kube.Pod, resAttrs pcommon.Map) string {
if pod != nil && pod.Namespace != "" {
return pod.Namespace
}
return stringAttributeFromMap(resAttrs, conventions.AttributeK8SNamespaceName)
}
func getNodeName(pod *kube.Pod, resAttrs pcommon.Map) string {
if pod != nil && pod.NodeName != "" {
return pod.NodeName
}
return stringAttributeFromMap(resAttrs, conventions.AttributeK8SNodeName)
}
// addContainerAttributes looks if pod has any container identifiers and adds additional container attributes
func (kp *kubernetesprocessor) addContainerAttributes(attrs pcommon.Map, pod *kube.Pod) {
containerName := stringAttributeFromMap(attrs, conventions.AttributeK8SContainerName)
containerID := stringAttributeFromMap(attrs, conventions.AttributeContainerID)
var (
containerSpec *kube.Container
ok bool
)
switch {
case containerName != "":
containerSpec, ok = pod.Containers.ByName[containerName]
if !ok {
return
}
case containerID != "":
containerSpec, ok = pod.Containers.ByID[containerID]
if !ok {
return
}
default:
return
}
if containerSpec.Name != "" {
if _, found := attrs.Get(conventions.AttributeK8SContainerName); !found {
attrs.PutStr(conventions.AttributeK8SContainerName, containerSpec.Name)
}
}
if containerSpec.ImageName != "" {
if _, found := attrs.Get(conventions.AttributeContainerImageName); !found {
attrs.PutStr(conventions.AttributeContainerImageName, containerSpec.ImageName)
}
}
if containerSpec.ImageTag != "" {
if _, found := attrs.Get(conventions.AttributeContainerImageTag); !found {
attrs.PutStr(conventions.AttributeContainerImageTag, containerSpec.ImageTag)
}
}
// attempt to get container ID from restart count
runID := -1
runIDAttr, ok := attrs.Get(conventions.AttributeK8SContainerRestartCount)
if ok {
containerRunID, err := intFromAttribute(runIDAttr)
if err != nil {
kp.logger.Debug(err.Error())
} else {
runID = containerRunID
}
} else {
// take the highest runID (restart count) which represents the currently running container in most cases
for containerRunID := range containerSpec.Statuses {
if containerRunID > runID {
runID = containerRunID
}
}
}
if runID != -1 {
if containerStatus, ok := containerSpec.Statuses[runID]; ok && containerStatus.ContainerID != "" {
if _, found := attrs.Get(conventions.AttributeContainerID); !found {
attrs.PutStr(conventions.AttributeContainerID, containerStatus.ContainerID)
}
}
}
}
func (kp *kubernetesprocessor) getAttributesForPodsNamespace(namespace string) map[string]string {
ns, ok := kp.kc.GetNamespace(namespace)
if !ok {
return nil
}
return ns.Attributes
}
func (kp *kubernetesprocessor) getAttributesForPodsNode(nodeName string) map[string]string {
node, ok := kp.kc.GetNode(nodeName)
if !ok {
return nil
}
return node.Attributes
}
func (kp *kubernetesprocessor) getUIDForPodsNode(nodeName string) string {
node, ok := kp.kc.GetNode(nodeName)
if !ok {
return ""
}
return node.NodeUID
}
// intFromAttribute extracts int value from an attribute stored as string or int
func intFromAttribute(val pcommon.Value) (int, error) {
switch val.Type() {
case pcommon.ValueTypeInt:
return int(val.Int()), nil
case pcommon.ValueTypeStr:
i, err := strconv.Atoi(val.Str())
if err != nil {
return 0, err
}
return i, nil
case pcommon.ValueTypeEmpty, pcommon.ValueTypeDouble, pcommon.ValueTypeBool, pcommon.ValueTypeMap, pcommon.ValueTypeSlice, pcommon.ValueTypeBytes:
fallthrough
default:
return 0, fmt.Errorf("wrong attribute type %v, expected int", val.Type())
}
}