gitlab-org--gitlab-foss/doc/web_hooks/web_hooks.md
2014-06-03 23:16:31 +02:00

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# Web hooks
Project web hooks allow you to trigger an URL if new code is pushed or a new issue is created.
You can configure web hooks to listen for specific events like pushes, issues or merge requests. GitLab will send a POST request with data to the web hook URL.
Web hooks can be used to update an external issue tracker, trigger CI builds, update a backup mirror, or even deploy to your production server.
If you send a web hook to an SSL endpoint [the certificate will not be verified](https://gitlab.com/gitlab-org/gitlab-ce/blob/ccd617e58ea71c42b6b073e692447d0fe3c00be6/app/models/web_hook.rb#L35) since many people use self-signed certificates.
## Push events
Triggered when you push to the repository except when pushing tags.
**Request body:**
```json
{
"before": "95790bf891e76fee5e1747ab589903a6a1f80f22",
"after": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
"ref": "refs/heads/master",
"user_id": 4,
"user_name": "John Smith",
"project_id": 15,
"repository": {
"name": "Diaspora",
"url": "git@example.com:diaspora.git",
"description": "",
"homepage": "http://example.com/diaspora"
},
"commits": [
{
"id": "b6568db1bc1dcd7f8b4d5a946b0b91f9dacd7327",
"message": "Update Catalan translation to e38cb41.",
"timestamp": "2011-12-12T14:27:31+02:00",
"url": "http://example.com/diaspora/commits/b6568db1bc1dcd7f8b4d5a946b0b91f9dacd7327",
"author": {
"name": "Jordi Mallach",
"email": "jordi@softcatala.org"
}
},
{
"id": "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
"message": "fixed readme",
"timestamp": "2012-01-03T23:36:29+02:00",
"url": "http://example.com/diaspora/commits/da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
"author": {
"name": "GitLab dev user",
"email": "gitlabdev@dv6700.(none)"
}
}
],
"total_commits_count": 4
}
```
## Issues events
Triggered when a new issue is created or an existing issue was updated/closed/reopened.
**Request body:**
```json
{
"object_kind": "issue",
"object_attributes": {
"id": 301,
"title": "New API: create/update/delete file",
"assignee_id": 51,
"author_id": 51,
"project_id": 14,
"created_at": "2013-12-03T17:15:43Z",
"updated_at": "2013-12-03T17:15:43Z",
"position": 0,
"branch_name": null,
"description": "Create new API for manipulations with repository",
"milestone_id": null,
"state": "opened",
"iid": 23
}
}
```
## Merge request events
Triggered when a new merge request is created or an existing merge request was updated/merged/closed.
**Request body:**
```json
{
"object_kind": "merge_request",
"object_attributes": {
"id": 99,
"target_branch": "master",
"source_branch": "ms-viewport",
"source_project_id": 14,
"author_id": 51,
"assignee_id": 6,
"title": "MS-Viewport",
"created_at": "2013-12-03T17:23:34Z",
"updated_at": "2013-12-03T17:23:34Z",
"st_commits": null,
"st_diffs": null,
"milestone_id": null,
"state": "opened",
"merge_status": "unchecked",
"target_project_id": 14,
"iid": 1,
"description": ""
}
}
```
#### Example webhook receiver
If you want to see GitLab's webhooks in action for testing purposes you can use
a simple echo script running in a console session.
Save the following file as `print_http_body.rb`.
```ruby
require 'webrick'
server = WEBrick::HTTPServer.new(Port: ARGV.first)
server.mount_proc '/' do |req, res|
puts req.body
end
trap 'INT' do server.shutdown end
server.start
```
Pick an unused port (e.g. 8000) and start the script: `ruby print_http_body.rb
8000`. Then add your server as a webhook receiver in GitLab as
`http://my.host:8000/`.
When you press 'Test Hook' in GitLab, you should see something like this in the console.
```
{"before":"077a85dd266e6f3573ef7e9ef8ce3343ad659c4e","after":"95cd4a99e93bc4bbabacfa2cd10e6725b1403c60",<SNIP>}
example.com - - [14/May/2014:07:45:26 EDT] "POST / HTTP/1.1" 200 0
- -> /
```