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PreparedTopologyRestore

laminar_db

Struct PreparedTopologyRestore 

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pub struct PreparedTopologyRestore { /* private fields */ }
Expand description

One unstarted target state image. It owns the existing local compiler slot until dropped. It has no source/sink actors or installation/output authority. Existing fenced parent transport handles provide channel decoding context; no receiver or sender is started by preparation. Even a successful preparation requires observed predecessor retirement, fresh authority checks, Commit and coordinated target Release before it can become a runtime graph.

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impl PreparedTopologyRestore

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pub const fn is_committed(&self) -> bool

Whether this image was authorized from an irreversible target Commit. It remains private; receivers, state installation, sinks and participant-complete Release are still required.

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pub const fn parent_retirement_observed(&self) -> bool

Whether this image’s parent actors were observed terminal after exact authority checks. This is a local observation, not a durable readiness receipt or target output permit. A future installer must revalidate current authority and the retired runtime boundary.

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pub fn target_version(&self) -> TopologyVersion

Target version of this private image; Commit does not activate it.

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pub fn root(&self) -> &TopologyMigrationRoot

Requirements consumed by this image; they grant no target output permit.

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pub const fn restored_frame_count(&self) -> usize

Number of verified local frames successfully restored through existing operator codecs.

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pub fn managed_state_bytes(&self) -> usize

Accounted managed state in the prepared graph, bounded by the configured state budget.

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pub const fn source_positions( &self, ) -> &BTreeMap<String, PreparedTopologySourcePosition>

Preserved/new cursor origins. Sources have not started or acknowledged input.

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pub const fn parent_checkpoint(&self) -> &CommittedCheckpointIndex

Original historical checkpoint metadata and identity. Its state buffers are released after decoding; no historical checkpoint is relabelled as target processing history.

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pub fn recovery_input(&self) -> Option<&TopologyRecoveryInput>

Selected private recovery authority, absent for original migration installation images. This never authorizes reuse of the original runtime’s installation receipt or Release.

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pub const fn recovery_checkpoint(&self) -> &CommittedCheckpointIndex

Exact cut supplying this image, with its original parent or target pipeline identity.

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impl Debug for PreparedTopologyRestore

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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