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2022-08-11-versioning_and_artifacts

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README.md
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README.md

Versioning concept for MVD

Decision

We want to get rid of checking out other repositories during CI, building them locally and publishing them into the local Maven cache (publishToMavenLocal).

Rationale

When building and/or running projects that use EDC (such as MVD) it is quite cumbersome and error-prone to check out a particular git ref in different projects and to build and publish them locally.

We will therefore move toward a system where we use distributed Maven artifacts rather than local ones. This is less flexible than git refs, but at the same time improves coherence and setup speed.

General rules

for the sake of brevity, the term "our" refers to all original implementation projects inside the eclipse-edc org in GitHub. At the time of this writing that includes DataSpaceConnector (a.k.a. "EDC"), RegistrationService (a.k.a. "RS", see GitHub), IdentityHub (a.k.a. "IH", see GitHub, MinimumViableDataspace (a.k.a. "MVD" , see GitHub)) and FederatedCatalog (a.k.a. "FC", see GitHub).

All "our" projects must

  • use Maven artifacts from MavenCentral or OSSRH Snapshots, both for local and CI builds
  • produce a new rolling -SNAPSHOT version based on their respective main branch every 30 minutes if there are changes. This is already in place.
  • produce a nightly snapshot build containing the date in the metadata, in the format X.Y.Z-YYYYMMDD-SNAPSHOT. This is already in place.

Specific rules for "our" dependent projects

  • publishing a new release in a dependency should also trigger a release in dependent projects with the same version string. E.g. building EDC -> triggers RS and IH.
  • all "our" dependent projects must maintain version consistency: for example when RS and IH both reference EDC 0.0.1-some-fix-SNAPSHOT, then MVD must reference that same version
  • version bumps must happen across all "our" repos: when RS upgrades to EDC 0.0.1-milestone-69, then all other projects must follow suit.

During development of "our" dependent projects

  • the main branches of "our" dependent projects must always reference releases or "named" snapshots of EDC
  • in case a dependent project requires a change in EDC, they can temporarily use the rolling snapshot or nightly version of EDC including that fix, but EDC should release a "named" snapshot, e.g. 0.0.1-something-SNAPSHOT in a timely manner. From that time forward, that project will use 0.0.1-something-SNAPSHOT on its main branch.
  • before merging the PR in the dependent project, there must be a named snapshot or release of EDC, which the dependent project references henceforth.