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Github PR resource

A Concourse resource for pull requests on Gitea. A port of the original for Github GraphQL API, ported to work with Gitea's RESTful API.

Source Configuration

Parameter Required Example Description
repository Yes atte/e2e-test-repository The repository to target.
access_token Yes A Gitea Access Token with repository access (required for setting status on commits). N.B. If you want github-pr-resource to work with a private repository. Set repo:full permissions on the access token you create on GitHub. If it is a public repository, repo:status is enough.
endpoint Yes https://git.atte.cloud Endpoint to use for the Gitea API. (Restful).
paths No true Disable ability to skip builds with [ci skip], [skip ci] and [no ci] in commit message or pull request title.
ignore_paths No [".ci/"] Inverse of the above. Pattern syntax is documented in filepath.Match, or a path prefix can be specified (e.g. .ci/ will match everything in the .ci directory).
disable_ci_skip No ["terraform/*/*.tf"] Only produce new versions if the PR includes changes to files that match one or more glob patterns or prefixes.title.
base_branch No master Name of a branch. The pipeline will only trigger on pull requests against the specified branch.
labels No ["bug", "enhancement"] The labels on the PR. The pipeline will only trigger on pull requests having at least one of the specified labels.
states No closed The PR states to select (open, closed or all). The pipeline will only trigger on pull requests matching one of the specified states. Default is open.

Notes:

Behaviour

check

Produces new versions for all commits (after the last version) ordered by the committed date. A version is represented as follows:

  • pr: The pull request number.
  • commit: The commit SHA.
  • committed: Timestamp of when the commit was committed. Used to filter subsequent checks.

If several commits are pushed to a given PR at the same time, the last commit will be the new version.

get

Parameter Required Example Description
skip_download No true Use with get_params in a put step to do nothing on the implicit get.
integration_tool No rebase The integration tool to use, merge, rebase or checkout. Defaults to merge.
git_depth No 1 Shallow clone the repository using the --depth Git option
submodules No true Recursively clone git submodules. Defaults to false.
fetch_tags No true Fetch tags from remote repository

Clones the base (e.g. master branch) at the latest commit, and merges the pull request at the specified commit into master. This ensures that we are both testing and setting status on the exact commit that was requested in input. Because the base of the PR is not locked to a specific commit in versions emitted from check, a fresh get will always use the latest commit in master and report the SHA of said commit in the metadata. Both the requested version and the metadata emitted by get are available to your tasks as JSON:

  • .git/resource/version.json
  • .git/resource/metadata.json

The information in metadata.json is also available as individual files in the .git/resource directory, e.g. the base_sha is available as .git/resource/base_sha.

When specifying skip_download the pull request volume mounted to subsequent tasks will be empty, which is a problem when you set e.g. the pending status before running the actual tests. The workaround for this is to use an alias for the put (see telia-oss#32 for more details). Example here:

put: update-status <-- Use an alias for the pull-request resource
resource: pull-request
params:
    path: pull-request
    status: pending
get_params: {skip_download: true}

Note that, should you retrigger a build in the hopes of testing the last commit to a PR against a newer version of the base, Concourse will reuse the volume (i.e. not trigger a new get) if it still exists, which can produce unexpected results (#5). As such, re-testing a PR against a newer version of the base is best done by pushing an empty commit to the PR.

put

Parameter Required Example Description
path Yes pull-request The name given to the resource in a GET step.
status No SUCCESS Set a status on a commit. One of pending, success, error, failure, and warning.
base_context No concourse-ci Base context (prefix) used for the status context. Defaults to concourse-ci.
context No unit-test A context to use for the status, which is prefixed by base_context. Defaults to status.
comment No hello world! A comment to add to the pull request.
comment_file No my-output/comment.txt Path to file containing a comment to add to the pull request (e.g. output of terraform plan).
target_url No $ATC_EXTERNAL_URL/builds/$BUILD_ID The target URL for the status, where users are sent when clicking details (defaults to the Concourse build page).
description No Concourse CI build failed The description status on the specified pull request.
description_file No my-output/description.txt Path to file containing the description status to add to the pull request

Note that comment, comment_file and target_url will all expand environment variables, so in the examples above $ATC_EXTERNAL_URL will be replaced by the public URL of the Concourse ATCs. See https://concourse-ci.org/implementing-resource-types.html#resource-metadata for more details about metadata that is available via environment variables.

Example

resource_types:
- name: pull-request
  type: registry-image
  source:
    repository: atteniemi/gitea-pr-resource
    tag: latest

resources:
- name: pull-request
  type: pull-request
  #webhook_token: ((webhook-token))
  source:
    repository: ops/blog
    endpoint: https://git.atte.cloud 
    access_token: ((gitea-access.token))
    state: open

jobs:
- name: test
  plan: 
  - get: pull-request
    trigger: true
    version: every
    params:
      submodules: true
  - put: pull-request
    no_get: true # skip the implied get to not wipe out submodules
    params:
      path: pull-request
      status: pending
  - task: test-build
    config:
      platform: linux
      image_resource:
        type: registry-image
        source:
          repository: ghcr.io/getzola/zola
          tag: v0.17.1
      inputs:
      - name: pull-request
      run:
        path: zola
        args: [-r, pull-request, build]
    on_failure:
      put: pull-request
      params:
        path: pull-request
        status: failure
  - put: pull-request
    no_get: true  # skip the implied get
    params:
      path: pull-request
      status: success

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Gitea pull request resource for Concourse

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