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migration.go
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migration.go
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// Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package botanist
import (
"context"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
"github.com/gardener/gardener/pkg/operation/botanist/component"
"github.com/gardener/gardener/pkg/utils/flow"
)
// MigrateAllExtensionResources migrates all extension CRs.
func (b *Botanist) MigrateAllExtensionResources(ctx context.Context) (err error) {
return b.runParallelTaskForEachComponent(ctx, b.Shoot.GetExtensionComponentsForMigration(), func(c component.DeployMigrateWaiter) func(context.Context) error {
return c.Migrate
})
}
// WaitUntilAllExtensionResourcesMigrated waits until all extension CRs were successfully migrated.
func (b *Botanist) WaitUntilAllExtensionResourcesMigrated(ctx context.Context) error {
return b.runParallelTaskForEachComponent(ctx, b.Shoot.GetExtensionComponentsForMigration(), func(c component.DeployMigrateWaiter) func(context.Context) error {
return c.WaitMigrate
})
}
// DestroyAllExtensionResources deletes all extension CRs from the Shoot namespace.
func (b *Botanist) DestroyAllExtensionResources(ctx context.Context) error {
return b.runParallelTaskForEachComponent(ctx, b.Shoot.GetExtensionComponentsForMigration(), func(c component.DeployMigrateWaiter) func(context.Context) error {
return c.Destroy
})
}
// DestroyDNSRecords deletes all DNSRecord resources from the Shoot namespace.
func (b *Botanist) DestroyDNSRecords(ctx context.Context) error {
return b.runParallelTaskForEachComponent(ctx, b.Shoot.GetDNSRecordComponentsForMigration(), func(c component.DeployMigrateWaiter) func(context.Context) error {
return c.Destroy
})
}
func (b *Botanist) runParallelTaskForEachComponent(ctx context.Context, components []component.DeployMigrateWaiter, fn func(component.DeployMigrateWaiter) func(context.Context) error) error {
var fns []flow.TaskFn
for _, component := range components {
fns = append(fns, fn(component))
}
return flow.Parallel(fns...)(ctx)
}
func (b *Botanist) isRestorePhase() bool {
return b.Shoot != nil &&
b.Shoot.GetInfo() != nil &&
b.Shoot.GetInfo().Status.LastOperation != nil &&
b.Shoot.GetInfo().Status.LastOperation.Type == gardencorev1beta1.LastOperationTypeRestore
}