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CONTRIBUTING.md

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Contributing to Hydra

Hydra is an open-source project and contributions in the form of a PR are welcome. We use conventional-commits enforced by the commitizen and commitlint

Testing

A pull request adding a new feature or fixing an existing bug should include a test covering the changes. The contribution can be covered either by an e2e test or by a unit test. End-to-end tests are located in packages/hydra-e2e-tests and can be run from the root with yarn e2e-test. Unit tests are package-specific. For example, unit tests for hydra-cli can ber run using yarn workspace @subsquid/hydra-cli test. Both e2e and unit tests are run by CI once a PR is opened.

Versioning and Releases

The monorepo is organized with lerna, with a single version for all packages. Once a pull request is merged, the version is bumped to the new pre-release version following the conventional commits convention. When deemed mature, the publish action can be manuually triggered. It graduates the pre-release version and publishes to the npm registry and docker hub (for private packages hydra-indexer and hydra-indexer-gateway).

Publishing (for maintainers only)

Publish Github action is supposed to be run manually. It has the following inputs:

  • packages: specify the list of packages to publish. If the list containts hydra-indexer and/or hydra-indexer-gateway then the corresponding Docker images will be published to Dockerhub. By default, it is set to '*' which means that both npm packages and Docker images will be published

  • graduate: Whether the current pre-release should be graduated by Lerna. For examaple, 2.0.1-alpha.3 will be graduated to 2.0.1. Graduated releases are published with the latest tag, while pre-releases has next.