/*
 * 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)
)
