started fabric deployment file

fabfile.py

+"""
+Deployment Fabric file
+
+A fabric deployment script for Helios that assumes the following:
+- locally, development is /web/helios-server
+- remotely, production is /web/production/helios-server
+- remotely, staging is /web/staging/helios-server
+
+Deployment is git and tag based, so
+
+fab staging_deploy:tag=v3.0.4,hosts="vote.heliosvoting.org"
+fab production_deploy:tag=v3.0.5,hosts="vote.heliosvoting.org"
+"""
+
+from fabric.api import local, settings, abort, cd, run
+from fabric.contrib.console import confirm
+
+STAGING_DIR = "/web/staging/helios-server"
+PRODUCTION_DIR = "/web/production/helios-server"
+
+def run_tests():
+    result = local("python manage.py test", capture=False)
+    if result.failed:
+        abort("tests failed, will not deploy.")
+
+def check_tag(tag, path):
+    result = local('git tag')
+    if tag not in result.split("\n"):
+        abort("no local tag %s" % tag)
+
+    with cd(path):
+        result = run('git tag')
+        if tag not in result.split("\n"):
+            abort("no remote tag %s" % tag)
+
+def checkout_tag(tag, path):
+    pass
+
+def migrate_db(path):
+    pass
+
+def restart_apache():
+    pass
+
+def deploy_staging(tag):
+    confirm("Ready to deploy %s to staging?" % tag)
+    run_tests()
+    check_tag(tag, path=STAGING_DIR)
+