fab_helpers.py

"""fab_helpers.py

Helper functions and classes for Fabric (http://fabric.readthedocs.org/en/latest/)
Used by fabfile.py
"""

import datetime
import requests

from fabric.api import *

def tag_deploy():
    """Automatically create a tag whenever we deploy, so that we can roll-back to it at a future date
    """
    commit_timestamp = local('git log -n 1 --pretty=format:"%ct" master', capture=True)
    commit_datetimestr = datetime.datetime.utcfromtimestamp(float(commit_timestamp)).strftime('%Y%m%d.%H%M%S')
    revision = local('git log -n 1 --pretty=format:"%H" master', capture=True)
    local('git tag -a deploy-%s master -m "Auto-tagged deploy %s %s"' % (commit_datetimestr, commit_datetimestr, revision,))
    local('git push --tags')

def rollbar_record_deploy(access_token, env='other'):
    """Tracking deploys
    http://rollbar.com/docs/deploys_fabric/
    """
    environment = env
    local_username = local('whoami', capture=True)
    # fetch last committed revision in the locally-checked out branch
    revision = local('git log -n 1 --pretty=format:"%H"', capture=True)

    resp = requests.post('https://api.rollbar.com/api/1/deploy/', {
        'access_token': access_token,
        'environment': environment,
        'local_username': local_username,
        'revision': revision
    }, timeout=3)

    if resp.status_code == 200:
        print "Deploy recorded successfully."
    else:
        print "Error recording deploy:", resp.text

class AbstractFabricTaskManager(object):
    def deploy(self):
        """Default deploy task
        """
        print 'I am a dummy task'

    def _get_hosts(self):
        hosts = []
        return hosts

    def _get_setup_args(self):
        setup_args = '-h'
        return setup_args