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metrics.go
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/
metrics.go
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/*
* Copyright 2019 The Knative 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 broker
import "go.opencensus.io/tag"
const (
// EventArrivalTime is used to access the metadata stored on a
// CloudEvent to measure the time difference between when an event is
// received on a broker and before it is dispatched to the trigger function.
// The format is an RFC3339 time in string format. For example: 2019-08-26T23:38:17.834384404Z.
EventArrivalTime = "knativearrivaltime"
// LabelUniqueName is the label for the unique name per stats_reporter instance.
LabelUniqueName = "unique_name"
// LabelContainerName is the label for the immutable name of the container.
LabelContainerName = "container_name"
)
var (
ContainerTagKey = tag.MustNewKey(LabelContainerName)
UniqueTagKey = tag.MustNewKey(LabelUniqueName)
)