mirror of
https://github.com/kubevela/kubevela.git
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107 lines
3.7 KiB
Go
107 lines
3.7 KiB
Go
/*
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Copyright 2021 The KubeVela 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 workloads
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import (
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"context"
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"github.com/crossplane/crossplane-runtime/pkg/event"
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kruise "github.com/openkruise/kruise-api/apps/v1alpha1"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/types"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"github.com/oam-dev/kubevela/apis/standard.oam.dev/v1alpha1"
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"github.com/oam-dev/kubevela/pkg/oam"
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)
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// WorkloadController is the interface that all type of cloneSet controller implements
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type WorkloadController interface {
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// VerifySpec makes sure that the resources can be upgraded according to the rollout plan
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// it returns if the verification succeeded/failed or should retry
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VerifySpec(ctx context.Context) (bool, error)
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// Initialize make sure that the resource is ready to be upgraded
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// this function is tasked to do any initialization work on the resources
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// it returns if the initialization succeeded/failed or should retry
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Initialize(ctx context.Context) (bool, error)
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// RolloutOneBatchPods tries to upgrade pods in the resources following the rollout plan
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// it will upgrade pods as the rollout plan allows at once
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// it returns if the upgrade actionable items succeeded/failed or should continue
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RolloutOneBatchPods(ctx context.Context) (bool, error)
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// CheckOneBatchPods checks how many pods are ready to serve requests in the current batch
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// it returns whether the number of pods upgraded in this round satisfies the rollout plan
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CheckOneBatchPods(ctx context.Context) (bool, error)
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// FinalizeOneBatch makes sure that the rollout can start the next batch
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// it returns if the finalization of this batch succeeded/failed or should retry
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FinalizeOneBatch(ctx context.Context) (bool, error)
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// Finalize makes sure the resources are in a good final state.
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// It might depend on if the rollout succeeded or not.
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// For example, we may remove the source object to prevent scalar traits to ever work
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// and the finalize rollout web hooks will be called after this call succeeds
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Finalize(ctx context.Context, succeed bool) bool
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}
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type workloadController struct {
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client client.Client
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recorder event.Recorder
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parentController oam.Object
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rolloutSpec *v1alpha1.RolloutPlan
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rolloutStatus *v1alpha1.RolloutStatus
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}
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// cloneSetController is the place to hold fields needed for handle Cloneset type of workloads
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type cloneSetController struct {
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workloadController
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targetNamespacedName types.NamespacedName
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cloneSet *kruise.CloneSet
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}
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// size fetches the Cloneset and returns the replicas (not the actual number of pods)
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func (c *cloneSetController) size(ctx context.Context) (int32, error) {
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if c.cloneSet == nil {
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err := c.fetchCloneSet(ctx)
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if err != nil {
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return 0, err
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}
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}
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// default is 1
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if c.cloneSet.Spec.Replicas == nil {
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return 1, nil
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}
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return *c.cloneSet.Spec.Replicas, nil
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}
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func (c *cloneSetController) fetchCloneSet(ctx context.Context) error {
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// get the cloneSet
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workload := kruise.CloneSet{}
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err := c.client.Get(ctx, c.targetNamespacedName, &workload)
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if err != nil {
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if !apierrors.IsNotFound(err) {
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c.recorder.Event(c.parentController, event.Warning("Failed to get the Cloneset", err))
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}
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return err
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}
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c.cloneSet = &workload
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return nil
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}
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