fba87909a0
* Re-introduce interface for snapshot management Snapshot management was done through the Update interface; this commit splits it into a separate interface * Put the SnapshotManager instance onto the engine context * Remove SnapshotManager from planContext and updateActions now that it can be accessed by engine Context
28 lines
1 KiB
Go
28 lines
1 KiB
Go
package engine
|
|
|
|
import (
|
|
"io"
|
|
|
|
"github.com/pulumi/pulumi/pkg/resource/deploy"
|
|
)
|
|
|
|
// SnapshotManager is responsible for maintaining the in-memory representation
|
|
// of the current state of the resource world.
|
|
type SnapshotManager interface {
|
|
io.Closer
|
|
|
|
// BeginMutation signals to the SnapshotManager that the planner intends to mutate the global
|
|
// snapshot. It provides the step that it intends to execute. Based on that step, BeginMutation
|
|
// will record this intent in the global snapshot and return a `SnapshotMutation` that, when ended,
|
|
// will complete the transaction.
|
|
BeginMutation() (SnapshotMutation, error)
|
|
}
|
|
|
|
// SnapshotMutation represents an outstanding mutation that is yet to be completed. When the engine completes
|
|
// a mutation, it must call `End` in order to record the successful completion of the mutation.
|
|
type SnapshotMutation interface {
|
|
// End terminates the transaction and commits the results to the snapshot, returning an error if this
|
|
// failed to complete.
|
|
End(snapshot *deploy.Snapshot) error
|
|
}
|