ci_workflow.txt

                                              +---------+                          +-------+                                            +-----+                    +---------+                                   +---------------+
                                              | GitHub  |                          | Slack |                                            | CI  |                    | Jenkins |                                   | ArtifactRepo  |
                                              +---------+                          +-------+                                            +-----+                    +---------+                                   +---------------+
                          -----------------------\ |                                   |                                                   |                            |                                                |
                          | Pull Request opened. |-|                                   |                                                   |                            |                                                |
                          |----------------------| |                                   |                                                   |                            |                                                |
                                                   |                                   |                                                   |                            |                                                |
                                                   | Send message about PR opened.     |                                                   |                            |                                                |
                                                   |---------------------------------->|                                                   |                            |                                                |
                                                   |                                   |                                                   |                            |                                                |
                                                   | Notification of PR opened.        |                                                   |                            |                                                |
                                                   |-------------------------------------------------------------------------------------->|                            |                                                |
                                                   |                                   |                                                   |                            |                                                |
                                                   |                                   |                     Set commit status to pending. |                            |                                                |
                                                   |<--------------------------------------------------------------------------------------|                            |                                                |
                         ------------------------\ |                                   |                                                   |                            |                                                |
                         | commit status pending |-|                                   |                                                   |                            |                                                |
                         |-----------------------| |                                   |                                                   |                            |                                                |
                                                   |                                   |                                                   |                            |                                                |
                                                   |                                   |                                                   | Initiate build.            |                                                |
                                                   |                                   |                                                   |--------------------------->|                                                |
                                                   |                                   |                        -------------------------\ |                            |                                                |
                                                   |                                   |                        | Record job queue time. |-|                            |                                                |
                                                   |                                   |                        |------------------------| |                            |                                                |
                                                   |                                   |                                                   |                            |                                                |
                                                   |                                   |                    Send message about job queued. |                            |                                                |
                                                   |                                   |<--------------------------------------------------|                            |                                                |
                                                   |                                   |                                                   |                            |                                                |
                                                   |                                   |                                                   |        Notify job started. |                                                |
                                                   |                                   |                                                   |<---------------------------|                                                |
                                                   |                                   |                      ---------------------------\ |                            |                                                |
                                                   |                                   |                      | Record job started time. |-|                            |                                                |
                                                   |                                   |                      |--------------------------| |                            |                                                |
                                                   |                                   |                                                   |                            |                                                |
                                                   |                                   |                  Send message about job starting. |                            |                                                |
                                                   |                                   |<--------------------------------------------------|                            |                                                |
                                                   |                                   |                                                   |                            |                                                |
                                                   |                                   |                                                   |                            | Upload build artifact to build bucket.         |
                                                   |                                   |                                                   |                            |----------------------------------------------->|
                                                   |                                   |                                                   |                            |                                                |
                                                   |                                   |                                                   |      Notify job completed. |                                                |
                                                   |                                   |                                                   |<---------------------------|                                                |
                                                   |                                   |-------------------------------------------------\ |                            |                                                |
                                                   |                                   || Record job finished time, output, status, etc. |-|                            |                                                |
                                                   |                                   ||------------------------------------------------| |                            |                                                |
                                                   |                                   |                                                   |                            |                                                |
                                                   |                                   |                       Send message job completed. |                            |                                                |
                                                   |                                   |<--------------------------------------------------|                            |                                                |
                                                   |                                   |                                                   |                            |                                                |
                                                   |                                   |         Update commit status based on job status. |                            |                                                |
                                                   |<--------------------------------------------------------------------------------------|                            |                                                |
-------------------------------------------------\ |                                   |                                                   |                            |                                                |
| commit status `success`, `error`, or `failure` |-|                                   |                                                   |                            |                                                |
|------------------------------------------------| |                                   |                                                   |                            |                                                |
       ------------------------------------------\ |                                   |                                                   |                            |                                                |
       | status will include build artifact URL. |-|                                   |                                                   |                            |                                                |
       |-----------------------------------------| |                                   |                                                   |                            |                                                |
                                                   |                                   |                                                   |                            |                                                |

https://developer.github.com/v3/repos/statuses/

https://developer.github.com/v3/repos/deployments/