Module control 

Mutable namespace control-object envelopes and payloads.

Structs

AcquiredWriter

Captures the writer identity and fencing epoch a session must retain while publishing.

CheckpointRecordState

A checkpoint record: pins one metadata manifest (its basis) so garbage collection keeps everything the manifest references.

ControlObjectEnvelope

In-memory view of a control object envelope.

ForkBasis

Where a fork target’s metadata basis lives before the target publishes its own manifest, and the permanent record of what it was forked from.

HeadIdentityDrift

A successor head changed one of the namespace’s immutable identity fields. Every head a namespace ever publishes carries them forward verbatim from the head that created it.

HeadState

Carries the authoritative visibility, allocation, and fencing state of a namespace.

MetadataCompactionLeaseState

Says who owns the objects under one streaming metadata compaction’s job prefix.

MetadataRootState

Cold pointer to the best known materialized metadata root.

UploadSessionState

Tracks one durable content-upload workflow independently of commit publication.

WalFloorState

Earliest sequence for which incremental WAL history is retained.

WalSegmentPointer

Links one accepted WAL segment identity to its verified sequence range.

WriterBlock

Who most recently acquired the writer epoch, and when.

Enums

CheckpointOwner

Durable owner and expiry policy of a checkpoint record.

CheckpointRecordLifecycle

Monotonic lifecycle of a durable checkpoint record.

ControlObjectKind

Selects one independently versioned mutable control-object family.

MetadataCompactionLeaseStatus

Lifecycle of a compaction lease: two states and one transition.

NamespaceState

Lifecycle state recorded in the namespace head.

ProxiedStaging

Staging progress for a service-proxied upload.

UploadSessionLifecycle

Monotonic lifecycle of a durable upload session.

UploadSessionTransport

The transport never changes, and each variant stores only the state required by that upload path.

Functions

control_payload_checksum

Computes the checksum stored beside canonical JSON for a control state.

decode_control_object

Decodes and verifies a durable JSON control object of expected_kind.

encode_control_object

Encodes a control-object envelope as its durable JSON representation.

encode_control_state

Encodes state in a control-object envelope.

genesis_commit_id

The commit id every namespace’s sequence zero carries, before any commit has landed.

Type Aliases

CheckpointRecordEnvelope

Specializes a control envelope for a durable manifest pin.

HeadStateEnvelope

Specializes a control envelope for the authoritative namespace head.

MetadataCompactionLeaseEnvelope

Specializes a control envelope for a running compaction’s ownership of its staged output.

MetadataRootEnvelope

Specializes a control envelope for the selected materialized manifest.

UploadSessionEnvelope

Specializes a control envelope for a durable upload workflow.

WalFloorEnvelope

Specializes a control envelope for the retained-history floor.