hyperledger / fabric-x-committer / 29753106335

90%

Build Type

push

github

Committed by web-flow

Commit Message

[vc, coordinator, verifier] treat _snapshot and _checkpoint as system namespaces (#685)

#### Type of change

- New feature
 
#### Description

Add committerpb.SnapshotNamespaceID and CheckpointNamespaceID to the
systemNamespaces list so their ns_<id> tables are created via the
existing namespace bootstrap path, alongside _meta and _config.

Recognize _snapshot and _checkpoint as first-class system namespaces
across policy validation, the dependency graph, and the VC preparer,
mirroring existing _meta/_config handling.


#### Additional details (Optional)

- Add utils.IsSystemNamespace covering _meta, _config, _snapshot, and
  _checkpoint, and use it in policy validation and dependency-graph
  read-key construction to avoid duplicating the 4-way guard.
- policy: reject _snapshot/_checkpoint as ordinary application namespace
  policies.
- dependencygraph: skip the normal _meta namespace-version read
  dependency for system namespaces.
- vc preparer: skip the _meta dependency for both; forward the _snapshot
  marker TX to the committer as a single new write into the _snapshot
  namespace (key = tx_id, value = SnapshotState{TxRef}); retain the
  single ReadWrite for _checkpoint. Fail the preparer worker rather than
silently dropping a _snapshot write, since that would fork state across
  deterministic replicas.

#### Related issues

 - resolves #657 and #658

---------

Signed-off-by: Senthilnathan <cendhu@gmail.com>

Coverage Stats

37 of 39 new or added lines in 4 files covered. (94.87%)

26 existing lines in 5 files now uncovered.

10422 of 11389 relevant lines covered (91.51%)

43008.07 hits per line