59 lines
2.3 KiB
Go
59 lines
2.3 KiB
Go
/*
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Copyright 2023 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 scaleup
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import (
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appsv1 "k8s.io/api/apps/v1"
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apiv1 "k8s.io/api/core/v1"
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"k8s.io/autoscaler/cluster-autoscaler/clusterstate"
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"k8s.io/autoscaler/cluster-autoscaler/context"
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ca_processors "k8s.io/autoscaler/cluster-autoscaler/processors"
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"k8s.io/autoscaler/cluster-autoscaler/processors/status"
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"k8s.io/autoscaler/cluster-autoscaler/utils/errors"
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"k8s.io/autoscaler/cluster-autoscaler/utils/taints"
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schedulerframework "k8s.io/kubernetes/pkg/scheduler/framework"
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)
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// Orchestrator is a component that picks the node group to resize and triggers
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// creation of needed instances.
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type Orchestrator interface {
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// Initialize initializes the orchestrator object with required fields.
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Initialize(
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autoscalingContext *context.AutoscalingContext,
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processors *ca_processors.AutoscalingProcessors,
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clusterStateRegistry *clusterstate.ClusterStateRegistry,
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taintConfig taints.TaintConfig,
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)
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// ScaleUp tries to scale the cluster up. Returns appropriate status or error if
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// an unexpected error occurred. Assumes that all nodes in the cluster are ready
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// and in sync with instance groups.
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ScaleUp(
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unschedulablePods []*apiv1.Pod,
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nodes []*apiv1.Node,
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daemonSets []*appsv1.DaemonSet,
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nodeInfos map[string]*schedulerframework.NodeInfo,
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) (*status.ScaleUpStatus, errors.AutoscalerError)
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// ScaleUpToNodeGroupMinSize tries to scale up node groups that have less nodes
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// than the configured min size. The source of truth for the current node group
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// size is the TargetSize queried directly from cloud providers. Returns
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// appropriate status or error if an unexpected error occurred.
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ScaleUpToNodeGroupMinSize(
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nodes []*apiv1.Node,
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nodeInfos map[string]*schedulerframework.NodeInfo,
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) (*status.ScaleUpStatus, errors.AutoscalerError)
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}
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