trait WritePackagesService extends AnyRef
An interface for uploading packages via a participant.
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- abstract def uploadPackages(submissionId: SubmissionId, archives: List[Archive], sourceDescription: Option[String])(implicit traceContext: TraceContext): CompletionStage[SubmissionResult]
Upload a collection of Daml-LF packages to the ledger.
Upload a collection of Daml-LF packages to the ledger.
This method must be thread-safe, not throw, and not block on IO. It is though allowed to perform significant computation.
Successful archives upload will result in a com.digitalasset.canton.ledger.participant.state.v2.Update.PublicPackageUpload message. See the comments on com.digitalasset.canton.ledger.participant.state.v2.ReadService.stateUpdates and com.digitalasset.canton.ledger.participant.state.v2.Update for further details.
Note: we accept com.daml.daml_lf_dev.DamlLf.Archives rather than parsed packages, because we want to be able to get the byte size of each individual ArchivePayload, which is information that the read / index service need to provide. Moreover this information should be consistent with the payload that the com.daml.ledger.api.v1.package_service.GetPackageResponse contains. If we were to consume packages we'd have to re-encode them to provide the size, and the size might potentially be different from the original size, which would be quite confusing.
- submissionId
Submitter chosen submission identifier.
- archives
Daml-LF archives to be uploaded to the ledger. All archives must be valid, i.e., they must successfully decode and pass Daml engine validation.
- sourceDescription
Description provided by the backing participant describing where it got the package from, e.g., when, where, or by whom the packages were uploaded.
- returns
an async result of a com.digitalasset.canton.ledger.participant.state.v2.SubmissionResult
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