Fabfile

fabfile2.py

STAGING = { 'directory': '/var/www/stagingcode/',
            'fcgi': 'fcgi-staging.fcgi' }
PROD = {'directory': '/var/www/productioncode/',
        'fcgi': 'fcgi-prod.fcgi'}
env.hosts = ['host.domain.com']
env.user = getpass.getuser()
USER_ID = 'productionuser'

@task
def deploy():
  env.user = prompt('Username: ', default=env.user)

  # Check if we first want to test on staging
  staging = confirm("Test on staging first?")
  if staging:
    git_pull(STAGING['directory'])
    update_packages(PROD['directory'])
    restart_fcgi(STAGING['fcgi'])
    if not confirm("Deploy to staging done. Continue with deploy to production?"):
      abort('Aborting production, at your request')

  # Pull on the production branch  
  git_pull(PROD['directory'])

  # If we didn't check on staging, we did not update virtualenv 
  # packages, and need to do this now.
  if not staging:
    update_packages(PROD['directory'])

  # Check if we want to tag the deployment
  git_tag(PROD['directory'])

  # Restart the fcgi at last. 
  restart_fcgi(PROD['fcgi'])

def git_pull(repo):
  print header("Running: git-pull on directory:\n# %s" % repo)
  with cd(repo):
    sudo("git fetch origin && git reset --hard origin/master", user=USER_ID)

def git_tag(repo):
  if confirm("Give new tag for this deployment?"):
    print header("Running: Checking tags")
    with cd(repo):
      sudo("git tag |tail -n 5", user=USER_ID)
      tag = prompt('Give new tag: ')
      sudo("git tag %s" % tag, user=USER_ID)
      sudo("git push --tags && git push", user=USER_ID)

def update_packages(repo):
  print header("Running: pip install in the virtual environment")
  with cd(repo + "../"):
    sudo("./virtualenv/bin/pip install -r requirements.txt", user=USER_ID)

def restart_fcgi(fcgi_name):
  print header("Running: Restart fcgi script: %s" % fcgi_name)
  sudo("invoke-rc.d %s restart" % fcgi_name)

def header(text):
  return ("#" * 45) + "\n# %s\n" % text + ("#" * 45)