mirror of
https://git.vectorsigma.ru/public/atlantis.git
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103 lines
4.8 KiB
Markdown
103 lines
4.8 KiB
Markdown
# Developing
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## Running Atlantis Locally
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Get the source code:
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```
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go get github.com/runatlantis/atlantis
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```
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This will clone Atlantis into `$GOPATH/src/github.com/runatlantis/atlantis` (where `$GOPATH` defaults to `~/go`).
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Go to that directory:
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```
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cd $GOPATH/src/github.com/runatlantis/atlantis
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```
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Compile Atlantis:
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```
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go install
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```
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Run Atlantis:
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```
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atlantis server --gh-user <your username> --gh-token <your token> --log-level debug
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```
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If you get an error like `command not found: atlantis`, ensure that `$GOPATH/bin` is in your `$PATH`.
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## Calling Your Local Atlantis From GitHub
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- Create a test terraform repository in your GitHub.
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- Create a personal access token for Atlantis. See [Create a GitHub token](https://github.com/runatlantis/atlantis#create-a-github-token).
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- Start Atlantis in server mode using that token:
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```
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atlantis server --gh-user <your username> --gh-token <your token> --log-level debug
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```
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- Download ngrok from https://ngrok.com/download. This will enable you to expose Atlantis running on your laptop to the internet so GitHub can call it.
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- When you've downloaded and extracted ngrok, run it on port `4141`:
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```
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ngrok http 4141
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```
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- Create a WebHook in your repo and use the `https` url that `ngrok` printed out after running `ngrok http 4141`. Be sure to append `/events` so your webhook url looks something like `https://efce3bcd.ngrok.io/events`. See [Add GitHub Webhook](https://github.com/runatlantis/atlantis#add-github-webhook).
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- Create a pull request and type `atlantis help`. You should see the request in the `ngrok` and Atlantis logs and you should also see Atlantis comment back.
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## Code Style
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### Logging
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- `ctx.Log` should be available in most methods. If not, pass it down.
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- levels:
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- debug is for developers of atlantis
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- info is for users (expected that people run on info level)
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- warn is for something that might be a problem but we're not sure
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- error is for something that's definitely a problem
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- **ALWAYS** logs should be all lowercase (when printed, the first letter of each line will be automatically capitalized)
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- **ALWAYS** quote any string variables using %q in the fmt string, ex. `ctx.Log.Info("cleaning clone dir %q", dir)` => `Cleaning clone directory "/tmp/atlantis/lkysow/atlantis-terraform-test/3"`
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- **NEVER** use colons "`:`" in a log since that's used to separate error descriptions and causes
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- if you need to have a break in your log, either use `-` or `,` ex. `failed to clean directory, continuing regardless`
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### Errors
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- **ALWAYS** use lowercase unless the word requires it
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- **ALWAYS** use `errors.Wrap(err, "additional context...")"` instead of `fmt.Errorf("additional context: %s", err)`
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because it is less likely to result in mistakes and gives us the ability to trace call stacks
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- **NEVER** use the words "error occurred when...", or "failed to..." or "unable to...", etc. Instead, describe what was occurring at
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time of the error, ex. "cloning repository", "creating AWS session". This will prevent errors from looking like
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```
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Error setting up workspace: failed to run git clone: could find git
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```
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and will instead look like
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```
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Error: setting up workspace: running git clone: no executable "git"
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```
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This is easier to read and more consistent
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### Testing
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- place tests under `{package under test}_test` to enforce testing the external interfaces
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- if you need to test internally i.e. access non-exported stuff, call the file `{file under test}_internal_test.go`
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- use our testing utility for easier-to-read assertions: `import . "github.com/runatlantis/atlantis/testing"` and then use `Assert()`, `Equals()` and `Ok()`
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- don't try to describe the whole test by its function name. Instead use `t.Log` statements:
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```go
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// don't do this
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func TestLockingWhenThereIsAnExistingLockForNewEnv(t *testing.T) {
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...
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// do this
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func TestLockingExisting(t *testing.T) {
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t.Log("if there is an existing lock, lock should...")
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...
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t.Log("...succeed if the new project has a different path") {
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// optionally wrap in a block so it's easier to read
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}
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```
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- each test should have a `t.Log` that describes what the current state is and what should happen (like a behavioural test)
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# Creating a New Release
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1. Update version number in
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1. `main.go`
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1. Update `CHANGELOG.md` with latest release number and information
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1. Create a pull request and merge to master
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1. Check out master and fetch latest
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1. Run `make release`
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1. Go to https://github.com/runatlantis/atlantis/releases and click "Draft a new release"
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1. Prefix version with `v`
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1. The title of the release is the same as the tag (ex. v0.2.2)
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1. Fill in description by copying from the CHANGELOG just without the Downloads section
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1. Drag in binaries made with `make release`
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1. Re-run master branch build to ensure tag gets pushed to Docker hub: https://hub.docker.com/r/runatlantis/atlantis/tags/
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