/
gke.go
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/
gke.go
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// 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 gcp // import "go.opentelemetry.io/contrib/detectors/gcp"
import (
"context"
"fmt"
"os"
"cloud.google.com/go/compute/metadata"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/sdk/resource"
semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
)
// GKE collects resource information of GKE computing instances.
//
// Deprecated: Use gcp.NewDetector() instead, which does NOT detect container, pod, and namespace attributes.
// Set those using name using the OTEL_RESOURCE_ATTRIBUTES env var instead.
type GKE struct{}
// compile time assertion that GKE implements the resource.Detector interface.
var _ resource.Detector = (*GKE)(nil)
// Detect detects associated resources when running in GKE environment.
func (gke *GKE) Detect(ctx context.Context) (*resource.Resource, error) {
gcpDetecor := GCE{}
gceLablRes, err := gcpDetecor.Detect(ctx)
if os.Getenv("KUBERNETES_SERVICE_HOST") == "" {
return gceLablRes, err
}
var errInfo []string
if err != nil {
errInfo = append(errInfo, err.Error())
}
attributes := []attribute.KeyValue{
semconv.K8SNamespaceName(os.Getenv("NAMESPACE")),
semconv.K8SPodName(os.Getenv("HOSTNAME")),
}
if containerName := os.Getenv("CONTAINER_NAME"); containerName != "" {
attributes = append(attributes, semconv.ContainerName(containerName))
}
if clusterName, err := metadata.InstanceAttributeValue("cluster-name"); hasProblem(err) {
errInfo = append(errInfo, err.Error())
} else if clusterName != "" {
attributes = append(attributes, semconv.K8SClusterName(clusterName))
}
k8sattributeRes := resource.NewWithAttributes(semconv.SchemaURL, attributes...)
res, err := resource.Merge(gceLablRes, k8sattributeRes)
if err != nil {
errInfo = append(errInfo, err.Error())
}
var aggregatedErr error
if len(errInfo) > 0 {
aggregatedErr = fmt.Errorf("detecting GKE resources: %s", errInfo)
}
return res, aggregatedErr
}