mirror of https://github.com/kubevela/kubevela.git
96 lines
3.3 KiB
Go
96 lines
3.3 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 policy
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import (
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"github.com/pkg/errors"
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"k8s.io/kubectl/pkg/util/slice"
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"github.com/oam-dev/kubevela/apis/core.oam.dev/common"
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"github.com/oam-dev/kubevela/apis/core.oam.dev/v1alpha1"
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"github.com/oam-dev/kubevela/apis/core.oam.dev/v1beta1"
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pkgutils "github.com/oam-dev/kubevela/pkg/utils"
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)
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// selectReplicateComponents will replicate the components
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func selectReplicateComponents(components []common.ApplicationComponent, selectors []string) ([]common.ApplicationComponent, error) {
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var compToReplicate = make([]common.ApplicationComponent, 0)
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for _, comp := range components {
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if slice.ContainsString(selectors, comp.Name, nil) {
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compToReplicate = append(compToReplicate, comp)
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}
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}
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if len(compToReplicate) == 0 {
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return nil, errors.New("no component selected to replicate")
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}
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return compToReplicate, nil
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}
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// ReplicateComponents will filter the components to replicate, return the replication decisions
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func ReplicateComponents(policies []v1beta1.AppPolicy, components []common.ApplicationComponent) ([]common.ApplicationComponent, error) {
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var (
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compToRemove = make(map[string]bool)
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compToAdd = make([]common.ApplicationComponent, 0)
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)
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existReplicationPolicy := false
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for _, policy := range policies {
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if policy.Type == v1alpha1.ReplicationPolicyType {
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existReplicationPolicy = true
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replicateSpec := &v1alpha1.ReplicationPolicySpec{}
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if policy.Properties == nil {
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continue
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}
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if err := pkgutils.StrictUnmarshal(policy.Properties.Raw, replicateSpec); err != nil {
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return nil, errors.Wrapf(err, "failed to parse replicate policy %s", policy.Name)
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}
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compToRep, err := selectReplicateComponents(components, replicateSpec.Selector)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to apply replicate policy %s", policy.Name)
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}
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compToAdd = append(compToAdd, replicateComponents(compToRep, replicateSpec.Keys)...)
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for _, comp := range compToRep {
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compToRemove[comp.Name] = true
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}
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}
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}
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if !existReplicationPolicy {
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return components, nil
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}
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compsAfterReplicate := make([]common.ApplicationComponent, 0, len(components))
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for _, comp := range components {
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if !compToRemove[comp.Name] {
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compsAfterReplicate = append(compsAfterReplicate, comp)
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}
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}
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compsAfterReplicate = append(compsAfterReplicate, compToAdd...)
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return compsAfterReplicate, nil
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}
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func replicateComponents(comps []common.ApplicationComponent, keys []string) []common.ApplicationComponent {
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compsAfterReplicate := make([]common.ApplicationComponent, 0, len(comps)*len(keys))
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for _, comp := range comps {
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for _, key := range keys {
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compAfterReplicate := comp.DeepCopy()
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compAfterReplicate.ReplicaKey = key
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compsAfterReplicate = append(compsAfterReplicate, *compAfterReplicate)
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}
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}
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return compsAfterReplicate
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}
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