Sample fabric build file for a Django project

Django Fabric File

config.project_name = 'sample'
config.repo_address = 'http://path/to/repo'

def server():
    config.fab_hosts = ['{ip address}']
    config.path = '/srv/sample'
    config.fab_user = '{username}'
    config.virtualhost_path = "configs/"
    config.group = '{username}'
    
def setup():
    require('path')
    require('group')
    sudo('mkdir -p $(path); chown $(fab_user):$(group) -R $(path)')
    run('cd $(path); mkdir releases; mkdir shared; mkdir packages;', fail='ignore')
    
def deploy():
    require('fab_hosts')
    require('path')

    import time
    config.release = time.strftime('%Y%m%d%H%M%S')

    upload_tar_from_svn()
    symlink_current_release()
    install_site()
    restart_webserver()

def upload_tar_from_svn():
    require('release', provided_by=[deploy])
    local('svn export $(repo_address) $(release)')
    local('tar -pczf $(release).tar.gz $(release)')
    put('$(release).tar.gz', '$(path)/packages/')
    run('cd $(path)/releases && tar zxf ../packages/$(release).tar.gz')
    local('rm -fr $(release)')
    local('rm $(release).tar.gz')
    
def install_site():
    "Add the virtualhost file to apache"
    require('release')
    sudo('cd $(path)/releases/$(release); cp $(virtualhost_path)$(project_name) /etc/apache2/sites-available/')
    sudo('cd /etc/apache2/sites-available/; a2ensite $(project_name)') 
    sudo('mkdir /var/log/apache2/$(project_name)', fail='ignore')

def symlink_current_release():
    "Symlink our current release"
    require('release')
    run('cd $(path); rm releases/previous; mv releases/current releases/previous;', fail='ignore')
    run('cd $(path); ln -s $(release) releases/current')
    
def restart_webserver():
    "Restart the web server"
    sudo('/etc/init.d/apache2 restart')