146 lines
3.4 KiB
Go
146 lines
3.4 KiB
Go
package manta
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import (
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"context"
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"errors"
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"fmt"
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"path"
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"sort"
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"strings"
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tritonErrors "github.com/joyent/triton-go/errors"
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"github.com/joyent/triton-go/storage"
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"github.com/hashicorp/terraform/backend"
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"github.com/hashicorp/terraform/state"
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"github.com/hashicorp/terraform/state/remote"
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"github.com/hashicorp/terraform/states"
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)
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func (b *Backend) Workspaces() ([]string, error) {
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result := []string{backend.DefaultStateName}
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objs, err := b.storageClient.Dir().List(context.Background(), &storage.ListDirectoryInput{
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DirectoryName: path.Join(mantaDefaultRootStore, b.path),
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})
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if err != nil {
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if tritonErrors.IsResourceNotFound(err) {
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return result, nil
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}
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return nil, err
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}
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for _, obj := range objs.Entries {
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if obj.Type == "directory" && obj.Name != "" {
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result = append(result, obj.Name)
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}
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}
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sort.Strings(result[1:])
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return result, nil
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}
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func (b *Backend) DeleteWorkspace(name string) error {
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if name == backend.DefaultStateName || name == "" {
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return fmt.Errorf("can't delete default state")
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}
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//firstly we need to delete the state file
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err := b.storageClient.Objects().Delete(context.Background(), &storage.DeleteObjectInput{
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ObjectPath: path.Join(mantaDefaultRootStore, b.statePath(name), b.objectName),
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})
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if err != nil {
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return err
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}
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//then we need to delete the state folder
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err = b.storageClient.Objects().Delete(context.Background(), &storage.DeleteObjectInput{
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ObjectPath: path.Join(mantaDefaultRootStore, b.statePath(name)),
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})
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if err != nil {
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return err
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}
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return nil
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}
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func (b *Backend) StateMgr(name string) (state.State, error) {
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if name == "" {
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return nil, errors.New("missing state name")
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}
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client := &RemoteClient{
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storageClient: b.storageClient,
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directoryName: b.statePath(name),
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keyName: b.objectName,
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}
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stateMgr := &remote.State{Client: client}
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//if this isn't the default state name, we need to create the object so
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//it's listed by States.
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if name != backend.DefaultStateName {
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// take a lock on this state while we write it
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lockInfo := state.NewLockInfo()
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lockInfo.Operation = "init"
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lockId, err := client.Lock(lockInfo)
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if err != nil {
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return nil, fmt.Errorf("failed to lock manta state: %s", err)
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}
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// Local helper function so we can call it multiple places
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lockUnlock := func(parent error) error {
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if err := stateMgr.Unlock(lockId); err != nil {
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return fmt.Errorf(strings.TrimSpace(errStateUnlock), lockId, err)
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}
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return parent
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}
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// Grab the value
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if err := stateMgr.RefreshState(); err != nil {
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err = lockUnlock(err)
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return nil, err
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}
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// If we have no state, we have to create an empty state
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if v := stateMgr.State(); v == nil {
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if err := stateMgr.WriteState(states.NewState()); err != nil {
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err = lockUnlock(err)
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return nil, err
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}
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if err := stateMgr.PersistState(); err != nil {
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err = lockUnlock(err)
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return nil, err
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}
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}
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// Unlock, the state should now be initialized
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if err := lockUnlock(nil); err != nil {
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return nil, err
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}
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}
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return stateMgr, nil
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}
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func (b *Backend) client() *RemoteClient {
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return &RemoteClient{}
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}
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func (b *Backend) statePath(name string) string {
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if name == backend.DefaultStateName {
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return b.path
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}
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return path.Join(b.path, name)
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}
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const errStateUnlock = `
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Error unlocking Manta state. Lock ID: %s
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Error: %s
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You may have to force-unlock this state in order to use it again.
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`
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