c
com.digitalasset.canton.topology.processing
InitialTopologySnapshotValidator
Companion object InitialTopologySnapshotValidator
class InitialTopologySnapshotValidator extends NamedLogging
Validates an initial topology snapshot by:
- running transaction authorization validation
- deduplicating topology transactions
- removing superfluous signatures
- checking that serials are strictly monotonic
- checking that rejected transactions in the initial snapshot also are rejected in stored snapshot
- checking that the effective times valid_from and valid_until of the transactions are the same in the initial snapshot and the stored snapshot
Also compares the computed effective time with the effective provided in the snapshot.
Any inconsistency between the topology snapshot and the outcome of the validation is reported.
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- new InitialTopologySnapshotValidator(pureCrypto: CryptoPureApi, store: TopologyStore[TopologyStoreId], staticSynchronizerParameters: Option[StaticSynchronizerParameters], validateInitialSnapshot: Boolean, loggerFactory: NamedLoggerFactory, cleanupTopologySnapshot: Boolean = false)(implicit ec: ExecutionContext, materializer: Materializer)
- validateInitialSnapshot
if false, the validation is skipped and the snapshot is directly imported. this is risky as it might create a fork if the validation was changed. therefore, we only use this with great care. the proper solution is to make validation so fast that it doesn't impact performance.
- cleanupTopologySnapshot
if true, then we will clean up the topology snapshot (used for hard migration to clean up the genesis state)
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- val stateProcessor: TopologyStateProcessor
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- final def validateAndApplyInitialTopologySnapshot(initialSnapshot: GenericStoredTopologyTransactions)(implicit traceContext: TraceContext): EitherT[FutureUnlessShutdown, String, Unit]
Runs the topology snapshot through the normal processing/validation pipeline of the TopologyStateProcessor.
Runs the topology snapshot through the normal processing/validation pipeline of the TopologyStateProcessor.
NOTICE:
- the preparation and pre-processing of the provided topology snapshot is only done to support a wider variety of (legacy) topology snapshots.
- The outcome of the validation and import is compared with the expected outcome of the snapshot. Any inconsistencies are raised as errors. This serves as a security barrier.
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