/*
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 metricskey

import "k8s.io/apimachinery/pkg/util/sets"

// TODO should be moved to serving. See https://github.com/knative/pkg/issues/608

const (
	// ResourceTypeKnativeRevision is the Stackdriver resource type for Knative revision
	ResourceTypeKnativeRevision = "knative_revision"

	// LabelServiceName is the label for the deployed service name
	LabelServiceName = "service_name"

	// LabelRouteName is the label for immutable name of the route that receives the request
	LabelRouteName = "route_name"

	// LabelConfigurationName is the label for the configuration which created the monitored revision
	LabelConfigurationName = "configuration_name"

	// LabelRevisionName is the label for the monitored revision
	LabelRevisionName = "revision_name"
)

var (
	// KnativeRevisionLabels stores the set of resource labels for resource type knative_revision.
	// LabelRouteName is added as extra label since it is optional, not in this map.
	KnativeRevisionLabels = sets.NewString(
		LabelProject,
		LabelLocation,
		LabelClusterName,
		LabelNamespaceName,
		LabelServiceName,
		LabelConfigurationName,
		LabelRevisionName,
	)

	// KnativeRevisionMetrics stores a set of metric types which are supported
	// by resource type knative_revision.
	KnativeRevisionMetrics = sets.NewString(
		"knative.dev/internal/serving/activator/request_count",
		"knative.dev/internal/serving/activator/request_latencies",
		"knative.dev/serving/autoscaler/desired_pods",
		"knative.dev/serving/autoscaler/requested_pods",
		"knative.dev/serving/autoscaler/actual_pods",
		"knative.dev/serving/autoscaler/stable_request_concurrency",
		"knative.dev/serving/autoscaler/panic_request_concurrency",
		"knative.dev/serving/autoscaler/target_concurrency_per_pod",
		"knative.dev/serving/autoscaler/panic_mode",
		"knative.dev/internal/serving/revision/request_count",
		"knative.dev/internal/serving/revision/request_latencies",
	)
)
