.. _svn-http:

|svn| With Write Over HTTP
--------------------------

To use |svn| with read/write support over the |svn| protocol, you have to
configure HTTP |svn| backend.

Prerequisites
^^^^^^^^^^^^^

- Enable HTTP support inside labs setting on your |RCE| instance,
  see :ref:`lab-settings`.
- You need to install the following tools on the machine that is running an
  instance of |RCE|:
  ``Apache HTTP Server`` and
  ``mod_dav_svn``.


Using Ubuntu Distribution as an example you can run:

.. code-block:: bash

    $ sudo apt-get install apache2 libapache2-mod-svn

Once installed you need to enable ``dav_svn``:

.. code-block:: bash

    $ sudo a2enmod dav_svn

Configuring Apache Setup
^^^^^^^^^^^^^^^^^^^^^^^^

.. tip::

   It is recommended to run Apache on a port other than 80, due to possible
   conflicts with other HTTP servers like nginx. To do this, set the
   ``Listen`` parameter in the ``/etc/apache2/ports.conf`` file, for example
   ``Listen 8090``.


.. warning::

   Make sure your Apache instance which runs the mod_dav_svn module is
   only accessible by RhodeCode. Otherwise everyone is able to browse
   the repositories or run subversion operations (checkout/commit/etc.).

It is also recommended to run apache as the same user as |RCE|, otherwise
permission issues could occur. To do this edit the ``/etc/apache2/envvars``

   .. code-block:: apache

      export APACHE_RUN_USER=rhodecode
      export APACHE_RUN_GROUP=rhodecode

1. To configure Apache, create and edit a virtual hosts file, for example
   :file:`/etc/apache2/sites-available/default.conf`. Below is an example
   how to use one with auto-generated config ```mod_dav_svn.conf```
   from configured |RCE| instance.

.. code-block:: apache

    <VirtualHost *:8080>
        ServerAdmin rhodecode-admin@localhost
        DocumentRoot /var/www/html
        ErrorLog ${'${APACHE_LOG_DIR}'}/error.log
        CustomLog ${'${APACHE_LOG_DIR}'}/access.log combined
        Include /home/user/.rccontrol/enterprise-1/mod_dav_svn.conf
    </VirtualHost>


2. Go to the :menuselection:`Admin --> Settings --> Labs` page, and
   enable :guilabel:`Proxy Subversion HTTP requests`, and specify the
   :guilabel:`Subversion HTTP Server URL`.

3. Open the |RCE| configuration file,
   :file:`/home/{user}/.rccontrol/{instance-id}/rhodecode.ini`

4. Add the following configuration option in the ``[app:main]``
   section if you don't have it yet.

   This enable mapping of created |RCE| repo groups into special |svn| paths.
   Each time a new repository group will be created the system will update
   the template file, and create new mapping. Apache web server needs to be
   reloaded to pick up the changes on this file.
   It's recommended to add reload into a crontab so the changes can be picked
   automatically once someone creates an repository group inside RhodeCode.


.. code-block:: ini

    ##############################################
    ### Subversion proxy support (mod_dav_svn) ###
    ##############################################
    ## Enable or disable the config file generation.
    svn.proxy.generate_config = true
    ## Generate config file with `SVNListParentPath` set to `On`.
    svn.proxy.list_parent_path = true
    ## Set location and file name of generated config file.
    svn.proxy.config_file_path = %(here)s/mod_dav_svn.conf
    ## File system path to the directory containing the repositories served by
    ## RhodeCode.
    svn.proxy.parent_path_root = /path/to/repo_store
    ## Used as a prefix to the <Location> block in the generated config file. In
    ## most cases it should be set to `/`.
    svn.proxy.location_root = /


This would create a special template file called ```mod_dav_svn.conf```. We
used that file path in the apache config above inside the Include statement.


Using |svn|
^^^^^^^^^^^

Once |svn| has been enabled on your instance, you can use it using the
following examples. For more |svn| information, see the `Subversion Red Book`_

.. code-block:: bash

    # To clone a repository
    svn checkout http://my-svn-server.example.com/my-svn-repo

    # svn commit
    svn commit

.. _Subversion Red Book: http://svnbook.red-bean.com/en/1.7/svn-book.html#svn.ref.svn