Developer Cloud Sandboxes solution

h1. Application version management

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Application version management benefits from different tools available from a Developer Cloud Sandbox.

h2. Using Git

Git is a distributed version control and source code management system with an emphasis on speed.

Every Git working directory is a full-fledged local repository with complete history and full version tracking capabilities, and thus not dependent on the network or a central server.

We will describe here how to setup a Git working copy of an application folder, locally to a Sandbox, and how to push it to a GitHub code repository, for application sharing and collaborative development environment on the Web.

GitHub (http://github.com) is a web hosting service for software development projects, that uses the Git version control system. The service provides social networking tools such as feeds, watchers, and a social network graph to visualize how developers exploit their versions of a repository.

!local-remote.png!

h3. Step by step with Git

To initialize your Git local repository, with a synchronization to a web backup repository (GitHub), one option is to start from a repository previously initialized for a Sandbox project on Terradue's GitHub.

Start to save all the files of your /application folder.

Then ensure you have a clean, empty /application folder.

<pre>

[user@sb ~]$ cd /application

[user@sb ~]$ ls -al

</pre>

Then type:

<pre>

[user@sb ~]$ git clone git@github.com:Terradue/geowow-1.git ./

</pre>

You'll have to give your certificate passphrase.

As a result, this is creating the Sandbox's Git repository (.git) under your "application" folder, with synchronization to the web-based GitHub repository "geowow-1".

*From working directory to staging area*

Then copy your Application files back in your /application working directory.

Add your Application files in the sandbox's Git version control system:

<pre>

[user@sb ~]$ cd /application

[user@sb ~]$ git add application.xml yourSubFolder1/ 

</pre>

As a result, this is adding (referencing) file contents to the Git index (staging area).

*From staging area to local repository* 

To commit your Application in the sandbox's Git version control system:

<pre>

[user@sb ~]$ git commit

</pre>

As a result, this is recording files changes to the Git local repository.

*From local repository to remote repository*

To push your application on a webbackup area, for example on a dedicated GitHub repo (here the GitHub private repo https://github.com/Terradue/geowow-1 provided by Terradue to Sandbox users):

<pre>

[user@sb ~]$ git push

</pre>

As a result, this is updating the remote repository with the files changes from the Git local repository.

h2. Using Hadoop runs folders

Upcoming!