Files
atlantis/runatlantis.io/docs/post-workflow-hooks.md
Fabiano Soares Honorato cb485f11ee feat: Add pre and post workflow hook status (#2441)
* Add pre and post workflow hook status

* fix missing mocks

* fix pre/post workflow hooks tests

* add cmd output to file

* fix typo

* add cmd output to file on pre workflow hooks

* Add hooks output to web UI

* Remove unnecessary dependencies

* Clean the code and make tests work again

* Make lint happy

* Small fixes, create dedicated UUID generator and docs

* Add missing commentary

* Use matchers instead of mocking for tests and fix e2e tests

* Change 'OUTPUT_FILE' to 'OUTPUT_STATUS_FILE'

* Reduce SendWorkflowHook calls on hooks

* Apply suggestions from code review

Co-authored-by: PePe Amengual <jose.amengual@gmail.com>
Co-authored-by: nitrocode <7775707+nitrocode@users.noreply.github.com>
2022-12-19 14:20:34 -06:00

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3.6 KiB
Markdown

# Post Workflow Hooks
Post workflow hooks can be defined to run scripts after default or custom
workflows are executed. Post workflow hooks differ from [custom
workflows](custom-workflows.html#custom-run-command) in that they are run
outside of Atlantis commands. Which means they do not surface their output
back to the PR as a comment.
Post workflow hooks also only allow `run` and `description` commands.
[[toc]]
## Usage
Post workflow hooks can only be specified in the Server-Side Repo Config under
`repos` key.
## Use Cases
### Cost estimation reporting
You can add a post workflow hook to perform custom reporting after all workflows
have finished.
In this example we use a custom workflow to generate cost estimates for each
workflow using [Infracost](https://www.infracost.io/docs/integrations/atlantis/), then create a summary report after all workflows have completed.
```yaml
# repos.yaml
workflows:
myworkflow:
plan:
steps:
- init
- plan
- run: infracost breakdown --path=$PLANFILE --format=json --out-file=/tmp/$BASE_REPO_OWNER-$BASE_REPO_NAME-$PULL_NUM-$WORKSPACE-$REPO_REL_DIR-infracost.json
repos:
- id: /.*/
workflow: myworkflow
post_workflow_hooks:
- run: infracost output --path=/tmp/$BASE_REPO_OWNER-$BASE_REPO_NAME-$PULL_NUM-*-infracost.json --format=github-comment --out-file=/tmp/infracost-comment.md
description: Running infracost
# Now report the output as desired, e.g. post to GitHub as a comment.
# ...
```
## Reference
### Custom `run` Command
This is very similar to [custom workflow run
command](custom-workflows.html#custom-run-command).
```yaml
- run: custom-command
```
| Key | Type | Default | Required | Description |
| ----------- | ------ | ------- | -------- | --------------------- |
| run | string | none | no | Run a custom command |
| description | string | none | no | Post hook description |
::: tip Notes
* `run` commands are executed with the following environment variables:
* `BASE_REPO_NAME` - Name of the repository that the pull request will be merged into, ex. `atlantis`.
* `BASE_REPO_OWNER` - Owner of the repository that the pull request will be merged into, ex. `runatlantis`.
* `HEAD_REPO_NAME` - Name of the repository that is getting merged into the base repository, ex. `atlantis`.
* `HEAD_REPO_OWNER` - Owner of the repository that is getting merged into the base repository, ex. `acme-corp`.
* `HEAD_BRANCH_NAME` - Name of the head branch of the pull request (the branch that is getting merged into the base)
* `HEAD_COMMIT` - The sha256 that points to the head of the branch that is being pull requested into the base. If the pull request is from Bitbucket Cloud the string will only be 12 characters long because Bitbucket Cloud truncates its commit IDs.
* `BASE_BRANCH_NAME` - Name of the base branch of the pull request (the branch that the pull request is getting merged into)
* `PULL_NUM` - Pull request number or ID, ex. `2`.
* `PULL_AUTHOR` - Username of the pull request author, ex. `acme-user`.
* `DIR` - The absolute path to the root of the cloned repository.
* `USER_NAME` - Username of the VCS user running command, ex. `acme-user`. During an autoplan, the user will be the Atlantis API user, ex. `atlantis`.
* `COMMENT_ARGS` - Any additional flags passed in the comment on the pull request. Flags are separated by commas and
every character is escaped, ex. `atlantis plan -- arg1 arg2` will result in `COMMENT_ARGS=\a\r\g\1,\a\r\g\2`.
* `OUTPUT_STATUS_FILE` - An output file to customize the success or failure status. ex. `echo 'failure' > $OUTPUT_STATUS_FILE`.
:::