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/
group_backupper.go
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/
group_backupper.go
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/*
Copyright 2017 the Heptio Ark contributors.
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 backup
import (
"strings"
"github.com/sirupsen/logrus"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
kuberrs "k8s.io/apimachinery/pkg/util/errors"
"github.com/heptio/ark/pkg/apis/ark/v1"
"github.com/heptio/ark/pkg/client"
"github.com/heptio/ark/pkg/cloudprovider"
"github.com/heptio/ark/pkg/discovery"
"github.com/heptio/ark/pkg/util/collections"
)
type groupBackupperFactory interface {
newGroupBackupper(
log logrus.FieldLogger,
backup *v1.Backup,
namespaces, resources *collections.IncludesExcludes,
labelSelector string,
dynamicFactory client.DynamicFactory,
discoveryHelper discovery.Helper,
backedUpItems map[itemKey]struct{},
cohabitatingResources map[string]*cohabitatingResource,
actions []resolvedAction,
podCommandExecutor podCommandExecutor,
tarWriter tarWriter,
resourceHooks []resourceHook,
snapshotService cloudprovider.SnapshotService,
) groupBackupper
}
type defaultGroupBackupperFactory struct{}
func (f *defaultGroupBackupperFactory) newGroupBackupper(
log logrus.FieldLogger,
backup *v1.Backup,
namespaces, resources *collections.IncludesExcludes,
labelSelector string,
dynamicFactory client.DynamicFactory,
discoveryHelper discovery.Helper,
backedUpItems map[itemKey]struct{},
cohabitatingResources map[string]*cohabitatingResource,
actions []resolvedAction,
podCommandExecutor podCommandExecutor,
tarWriter tarWriter,
resourceHooks []resourceHook,
snapshotService cloudprovider.SnapshotService,
) groupBackupper {
return &defaultGroupBackupper{
log: log,
backup: backup,
namespaces: namespaces,
resources: resources,
labelSelector: labelSelector,
dynamicFactory: dynamicFactory,
discoveryHelper: discoveryHelper,
backedUpItems: backedUpItems,
cohabitatingResources: cohabitatingResources,
actions: actions,
podCommandExecutor: podCommandExecutor,
tarWriter: tarWriter,
resourceHooks: resourceHooks,
snapshotService: snapshotService,
resourceBackupperFactory: &defaultResourceBackupperFactory{},
}
}
type groupBackupper interface {
backupGroup(group *metav1.APIResourceList) error
}
type defaultGroupBackupper struct {
log logrus.FieldLogger
backup *v1.Backup
namespaces, resources *collections.IncludesExcludes
labelSelector string
dynamicFactory client.DynamicFactory
discoveryHelper discovery.Helper
backedUpItems map[itemKey]struct{}
cohabitatingResources map[string]*cohabitatingResource
actions []resolvedAction
podCommandExecutor podCommandExecutor
tarWriter tarWriter
resourceHooks []resourceHook
snapshotService cloudprovider.SnapshotService
resourceBackupperFactory resourceBackupperFactory
}
// backupGroup backs up a single API group.
func (gb *defaultGroupBackupper) backupGroup(group *metav1.APIResourceList) error {
var (
errs []error
pv *metav1.APIResource
log = gb.log.WithField("group", group.GroupVersion)
rb = gb.resourceBackupperFactory.newResourceBackupper(
log,
gb.backup,
gb.namespaces,
gb.resources,
gb.labelSelector,
gb.dynamicFactory,
gb.discoveryHelper,
gb.backedUpItems,
gb.cohabitatingResources,
gb.actions,
gb.podCommandExecutor,
gb.tarWriter,
gb.resourceHooks,
gb.snapshotService,
)
)
log.Infof("Backing up group")
processResource := func(resource metav1.APIResource) {
if err := rb.backupResource(group, resource); err != nil {
errs = append(errs, err)
}
}
for _, resource := range group.APIResources {
// do PVs last because if we're also backing up PVCs, we want to backup PVs within the scope of
// the PVCs (within the PVC action) to allow for hooks to run
if strings.ToLower(resource.Name) == "persistentvolumes" && strings.ToLower(group.GroupVersion) == "v1" {
pvResource := resource
pv = &pvResource
continue
}
processResource(resource)
}
if pv != nil {
processResource(*pv)
}
return kuberrs.NewAggregate(errs)
}