Added Contribution Guide

[AGL/documentation.git] / docs / 5_How_To_Contribute / 4_Submitting_Changes.md

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+---
+title: Submitting Changes
+---
+
+Carefully review the following before submitting a change. These
+guidelines apply to developers that are new to open source, as well as
+to experienced open source developers.
+
+## Change Requirements
+
+
+This section contains guidelines for submitting code changes for review.
+For more information on how to submit a change using Gerrit, please see
+[Working with Gerrit](./3_Working_with_Gerrit.md).
+
+Changes are submitted as Git commits. Each commit must contain:
+
+-  a short and descriptive subject line that is 72 characters or fewer,
+   followed by a blank line.
+-  a change description with your logic or reasoning for the changes,
+   followed by a blank line
+-  a Signed-off-by line, followed by a colon (Signed-off-by:)
+-  a Change-Id identifier line, followed by a colon (Change-Id:). Gerrit
+   won't accept patches without this identifier.
+
+A commit with the above details is considered well-formed.
+[This page](https://chris.beams.io/posts/git-commit/) is a very useful for the
+same.
+
+All changes and topics sent to Gerrit must be well-formed.
+Informationally, ``commit messages`` must include:
+
+-  **what** the change does,
+-  **why** you chose that approach, and
+-  **how** you know it works -- for example, which tests you ran.
+
+For example: One commit fixes whitespace issues, another renames a
+function and a third one changes the code's functionality. An example
+commit file is illustrated below in detail:
+
+```sh
+
+A short description of your change with no period at the end
+
+You can add more details here in several paragraphs, but please keep each line
+width less than 80 characters. A bug fix should include the issue number.
+
+Bug-AGL: [SPEC-<JIRA-ID>]
+Change-Id: IF7b6ac513b2eca5f2bab9728ebd8b7e504d3cebe1
+Signed-off-by: Your Name <commit-sender@email.address>
+```
+
+Include the issue ID in the one line description of your commit message for
+readability. Gerrit will link issue IDs automatically to the corresponding
+entry in Jira.
+
+Each commit must also contain the following line at the bottom of the commit
+message:
+
+```sh
+Signed-off-by: Your Name <your@email.address>
+```
+
+The name in the Signed-off-by line and your email must match the change
+authorship information. Make sure your :file:``.git/config`` is set up
+correctly. Always submit the full set of changes via Gerrit.
+
+When a change is included in the set to enable other changes, but it
+will not be part of the final set, please let the reviewers know this.