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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| // Copyright The OpenTelemetry Authors | ||
| // | ||
| // 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 gke | ||
|
|
||
| import ( | ||
| "context" | ||
| "log" | ||
| "os" | ||
| "strings" | ||
|
|
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| "cloud.google.com/go/compute/metadata" | ||
|
|
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| "go.opentelemetry.io/otel/api/kv" | ||
| "go.opentelemetry.io/otel/api/standard" | ||
| "go.opentelemetry.io/otel/sdk/resource" | ||
|
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| "go.opentelemetry.io/contrib/detect/gcp" | ||
| ) | ||
|
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| // Detect detects associated resources when running in GKE environment. | ||
| func Detect(ctx context.Context) (*resource.Resource, error) { | ||
| if os.Getenv("KUBERNETES_SERVICE_HOST") == "" { | ||
| return nil, nil | ||
| } | ||
|
|
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| labels := []kv.KeyValue{ | ||
| standard.K8SNamespaceNameKey.String(os.Getenv("NAMESPACE")), | ||
| standard.K8SPodNameKey.String(os.Getenv("HOSTNAME")), | ||
| standard.ContainerNameKey.String(os.Getenv("CONTAINER_NAME")), | ||
| } | ||
|
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| clusterName, err := metadata.Get("cluster-name") | ||
| logError(err) | ||
|
|
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| if clusterName != "" { | ||
| labels = append(labels, standard.K8SClusterNameKey.String(clusterName)) | ||
| } | ||
|
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| k8sLabelRes := resource.New(labels...) | ||
|
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| gcpDetecor := gcp.GCP{} | ||
|
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| gceLablRes, err := gcpDetecor.Detect(ctx) | ||
|
|
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| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| return resource.Merge(gceLablRes, k8sLabelRes), nil | ||
| } | ||
|
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| // logError logs error only if the error is present and it is not 'not defined' | ||
| func logError(err error) { | ||
| if err != nil { | ||
| if !strings.Contains(err.Error(), "not defined") { | ||
| log.Printf("Error retrieving gcp metadata: %v", err) | ||
| } | ||
| } | ||
| } |
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