75 lines
3.6 KiB
Markdown
75 lines
3.6 KiB
Markdown
# golangci-lint-action
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[](https://github.com/golangci/golangci-lint-action/actions)
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The action that runs [golangci-lint](https://github.com/golangci/golangci-lint) and reports issues from linters.
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## How to use
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1. Create a [GitHub token](https://github.com/settings/tokens/new) with scope `repo.public_repo`.
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2. Add it to a [repository secrets](https://help.github.com/en/actions/configuring-and-managing-workflows/creating-and-storing-encrypted-secrets#creating-encrypted-secrets): repository -> `Settings` -> `Secrets`.
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3. Add `.github/workflows/golangci-lint.yml` with the following contents:
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```yaml
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name: golangci-lint
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on:
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push:
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tags:
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- v*
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branches:
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- master
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pull_request:
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jobs:
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golangci:
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name: lint
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v2
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- name: golangci-lint
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uses: golangci/golangci-lint-action@v1
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with:
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# Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
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version: v1.26
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# Optional: golangci-lint command line arguments.
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# args: ./the-only-dir-to-analyze/...
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# Required: GitHub token with scope `repo.public_repo`. Used for fetching a list of releases of golangci-lint.
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github-token: ${{ secrets.GOLANGCI_LINT_GITHUB_TOKEN }}
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```
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## Comments and Annotations
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Currently, GitHub parses the action's output and creates [annotations](https://github.community/t5/GitHub-Actions/What-are-annotations/td-p/30770).
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The restrictions of annotations are the following:
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1. Currently, they don't support markdown formatting (see the [feature request](https://github.community/t5/GitHub-API-Development-and/Checks-Ability-to-include-Markdown-in-line-annotations/m-p/56704))
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2. They aren't shown in list of comments like it was with [golangci.com](https://golangci.com). If you would like to have comments - please, up-vote [the issue](https://github.com/golangci/golangci-lint-action/issues/5).
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## Internals
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We use JavaScript-based action. We don't use Docker-based action because:
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1. docker pulling is slow currently
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2. it's easier to use caching from [@actions/cache](https://github.com/actions/cache) until GitHub team hasn't supported reusing actions from actions
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Inside our action we perform 3 steps:
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1. Setup environment running in parallel:
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* restore [cache](https://github.com/actions/cache) of previous analyzes into `$HOME/.cache/golangci-lint`
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* list [releases of golangci-lint](https://github.com/golangci/golangci-lint/releases) and find the latest patch version
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for needed version (users of this action can specify only minor version). After that install [golangci-lint](https://github.com/golangci/golangci-lint) using [@actions/tool-cache](https://github.com/actions/toolkit/tree/master/packages/tool-cache)
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* install the latest Go 1.x version using [@actions/setup-go](https://github.com/actions/setup-go)
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2. Run `golangci-lint` with specified by user `args`
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3. Save cache from `$HOME/.cache/golangci-lint` for later builds
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## Development of this action
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1. Install [act](https://github.com/nektos/act#installation)
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2. Make a symlink for `act` to work properly: `ln -s . golangci-lint-action`
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3. Get a [GitHub token](https://github.com/settings/tokens/new) with the scope `repo.public_repo`. Export it by `export GITHUB_TOKEN=YOUR_TOKEN`.
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4. Prepare deps once: `npm run prepare-deps`
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5. Run `npm run local` after any change to test it |