80 lines
1.6 KiB
Go
80 lines
1.6 KiB
Go
package remote
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import (
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"bytes"
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"github.com/hashicorp/terraform/state"
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"github.com/hashicorp/terraform/terraform"
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)
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// State implements the State interfaces in the state package to handle
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// reading and writing the remote state. This State on its own does no
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// local caching so every persist will go to the remote storage and local
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// writes will go to memory.
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type State struct {
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Client Client
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state, readState *terraform.State
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}
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// StateReader impl.
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func (s *State) State() *terraform.State {
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return s.state.DeepCopy()
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}
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// StateWriter impl.
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func (s *State) WriteState(state *terraform.State) error {
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s.state = state
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return nil
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}
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// StateRefresher impl.
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func (s *State) RefreshState() error {
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payload, err := s.Client.Get()
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if err != nil {
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return err
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}
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// no remote state is OK
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if payload == nil {
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return nil
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}
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state, err := terraform.ReadState(bytes.NewReader(payload.Data))
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if err != nil {
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return err
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}
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s.state = state
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s.readState = state
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return nil
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}
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// StatePersister impl.
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func (s *State) PersistState() error {
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s.state.IncrementSerialMaybe(s.readState)
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var buf bytes.Buffer
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if err := terraform.WriteState(s.state, &buf); err != nil {
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return err
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}
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return s.Client.Put(buf.Bytes())
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}
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// Lock calls the Client's Lock method if it's implemented.
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func (s *State) Lock(info *state.LockInfo) (string, error) {
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if c, ok := s.Client.(ClientLocker); ok {
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return c.Lock(info)
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}
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return "", nil
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}
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// Unlock calls the Client's Unlock method if it's implemented.
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func (s *State) Unlock(id string) error {
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if c, ok := s.Client.(ClientLocker); ok {
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return c.Unlock(id)
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}
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return nil
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}
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