d6fe1e8764
This commit switches over the HPA controller to use the custom metrics API. It also converts the HPA controller to use the generated client in k8s.io/metrics for the resource metrics API. In order to enable support, you must enable `--horizontal-pod-autoscaler-use-rest-clients` on the controller-manager, which will switch the HPA controller's MetricsClient implementation over to use the standard rest clients for both custom metrics and resource metrics. This requires that at the least resource metrics API is registered with kube-aggregator, and that the controller manager is pointed at kube-aggregator. For this to work, Heapster must be serving the new-style API server (`--api-server=true`).
46 lines
1.9 KiB
Go
46 lines
1.9 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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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/kubernetes/pkg/api/v1"
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autoscaling "k8s.io/kubernetes/pkg/apis/autoscaling/v2alpha1"
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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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}
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