====================
Launchpad Components
====================

Merge Proposal
==============

*Purpose:*

* A merge proposal in launchpad, contains the changes to be built, tested and eventually merged into trunk.

*Deployment:*

* This is already provided by Launchpad

*Interactions:*

* Trunk Delivering System - serializes the build and testing of MPs destined for trunk and performs the actual merge. Sends feedback to the MP on results of build and testing.
* Ticketing Tracker - the tracker monitors MPs that are part of a ticket request.

BZR Repos
=========

*Purpose:*

* Project branches created for isolation of new features. Created by the ticket system when a new ticket is created for each project involved. Will eventually be merged to trunk

*Deployment:*

* This is already provided by Launchpad

*Interactions:*

* Ticket Environment Setup - Creates and removes the bzr repos as they are needed.

PPAs
====

*Purpose:*

* A PPA in launchpad, encapsulates the build of a bzr branch. Stores the packages once they are built. Will contain a single source for ‘direct to trunk’ MPs or multiple sources for tickets.

*Deployment:*

* This is already provided by Launchpad

*Interactions:*

* Branch/Source Builder - supplies source packages to build

* Trunk Delivering System - copies successful packages from PPAs into distro archive

* Ticket environment Setup - creates a PPA to manage projects and builds under a ticket

* Image Builder and Store - pulls packages from the PPA for image generation

Distro Archive
==============

*Purpose:*

* This is the package archive. Packages are copied to here from the branch/ticket specific PPAs once they are committed.

*Deployment:*

* This is already provided by Launchpad

*Interactions:*

* Trunk Delivering System - Copies packages from the PPAs to archive. Also monitors for successful delivery.