mirror of https://github.com/knative/caching.git
78 lines
2.5 KiB
Go
78 lines
2.5 KiB
Go
/*
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Copyright 2018 The Knative Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metricskey
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import (
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"context"
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"go.opencensus.io/resource"
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)
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const (
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// LabelProject is the label for project (e.g. GCP GAIA ID, AWS project name)
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LabelProject = "project_id"
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// LabelLocation is the label for location (e.g. GCE zone, AWS region) where the service is deployed
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LabelLocation = "location"
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// LabelClusterName is the label for immutable name of the cluster
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LabelClusterName = "cluster_name"
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// LabelNamespaceName is the label for immutable name of the namespace that the service is deployed
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LabelNamespaceName = "namespace_name"
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// ContainerName is the container for which the metric is reported.
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ContainerName = "container_name"
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// PodName is the name of the pod for which the metric is reported.
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PodName = "pod_name"
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// LabelResponseCode is the label for the HTTP response status code.
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LabelResponseCode = "response_code"
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// LabelResponseCodeClass is the label for the HTTP response status code class. For example, "2xx", "3xx", etc.
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LabelResponseCodeClass = "response_code_class"
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// LabelResponseError is the label for client error. For HTTP, A non-2xx status code doesn't cause an error.
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LabelResponseError = "response_error"
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// LabelResponseTimeout is the label timeout.
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LabelResponseTimeout = "response_timeout"
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// ValueUnknown is the default value if the field is unknown, e.g. project will be unknown if Knative
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// is not running on GKE.
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ValueUnknown = "unknown"
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)
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type resourceKey struct{}
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// WithResource associates the given monitoring Resource with the current
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// context. Note that Resources do not "stack" or merge -- the closest enclosing
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// Resource is the one that all measurements are associated with.
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func WithResource(ctx context.Context, r resource.Resource) context.Context {
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return context.WithValue(ctx, resourceKey{}, &r)
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}
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// GetResource extracts a resource from the current context, if present.
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func GetResource(ctx context.Context) *resource.Resource {
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r := ctx.Value(resourceKey{})
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if r == nil {
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return nil
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}
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return r.(*resource.Resource)
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}
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