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50 lines
2.0 KiB
Go
50 lines
2.0 KiB
Go
/*
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Copyright 2017 The Kubernetes 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 metrics
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import (
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"time"
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autoscaling "k8s.io/api/autoscaling/v2beta1"
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/labels"
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)
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// PodMetricsInfo contains pod metric values as a map from pod names to
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// metric values (the metric values are expected to be the metric as a milli-value)
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type PodMetricsInfo map[string]int64
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// MetricsClient knows how to query a remote interface to retrieve container-level
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// resource metrics as well as pod-level arbitrary metrics
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type MetricsClient interface {
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// GetResourceMetric gets the given resource metric (and an associated oldest timestamp)
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// for all pods matching the specified selector in the given namespace
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GetResourceMetric(resource v1.ResourceName, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error)
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// GetRawMetric gets the given metric (and an associated oldest timestamp)
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// for all pods matching the specified selector in the given namespace
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GetRawMetric(metricName string, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error)
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// GetObjectMetric gets the given metric (and an associated timestamp) for the given
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// object in the given namespace
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GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference) (int64, time.Time, error)
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// GetExternalMetric gets all the values of a given external metric
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// that match the specified selector.
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GetExternalMetric(metricName string, namespace string, selector labels.Selector) ([]int64, time.Time, error)
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}
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