14baf866f6
* Refactor the SnapshotManager interface Lift snapshot management out of the engine by delegating it to the SnapshotManager implementation in pkg/backend. * Add a event interface for plugin loads and use that interface to record plugins in the snapshot * Remove dead code * Add comments to Events * Add a number of tests for SnapshotManager * CR feedback: use a successful bit on 'End' instead of having a separate 'Abort' API * CR feedback * CR feedback: register plugins one-at-a-time instead of the entire state at once
36 lines
1.4 KiB
Go
36 lines
1.4 KiB
Go
package engine
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import (
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"io"
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"github.com/pulumi/pulumi/pkg/resource/deploy"
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"github.com/pulumi/pulumi/pkg/workspace"
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)
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// SnapshotManager is responsible for maintaining the in-memory representation
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// of the current state of the resource world.
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type SnapshotManager interface {
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io.Closer
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// BeginMutation signals to the SnapshotManager that the planner intends to mutate the global
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// snapshot. It provides the step that it intends to execute. Based on that step, BeginMutation
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// will record this intent in the global snapshot and return a `SnapshotMutation` that, when ended,
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// will complete the transaction.
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BeginMutation(step deploy.Step) (SnapshotMutation, error)
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// RegisterResourceOutputs registers the set of resource outputs generated by performing the
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// given step. These outputs are persisted in the snapshot.
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RegisterResourceOutputs(step deploy.Step) error
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// RecordPlugin records that the current plan loaded a plugin and saves it in the snapshot.
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RecordPlugin(plugin workspace.PluginInfo) error
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}
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// SnapshotMutation represents an outstanding mutation that is yet to be completed. When the engine completes
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// a mutation, it must call `End` in order to record the successful completion of the mutation.
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type SnapshotMutation interface {
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// End terminates the transaction and commits the results to the snapshot, returning an error if this
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// failed to complete.
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End(step deploy.Step, successful bool) error
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}
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