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+ GNU AFFERO GENERAL PUBLIC LICENSE
+ Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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+ Preamble
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+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source. For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code. There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
\ No newline at end of file
--- /dev/null
+"""
+Generic fabric deployment script.
+Create a fabfile.py in the project and start it with:
+
+ from fnpdeploy import *
+
+Then set up some env properties:
+ project_name: slug-like project name
+ hosts: list of target host names
+ user: remote user name
+ app_path: where does the app go
+ services: list of tasks to run after deployment
+ django_root_path (optional): path to the directory
+ containing django project, relative to the
+ root of the repository (defaults to '.')
+ localsettings_dst_path (optional): path indicating
+ where to copy the localsettings file, relative
+ to django_root_path (defaults to project_name/localsettings.py)
+ migrate_fake (optional): list of (app, migration) pairs to fake-migrate
+ skip_collect_static (optional): if True, Django collectstatic command is not called
+"""
+from subprocess import check_output
+from os.path import abspath, dirname, exists, join
+from django.utils.crypto import get_random_string
+from fabric.api import *
+from fabric.context_managers import settings
+from fabric.contrib import files
+from fabric.tasks import Task, execute
+
+env.virtualenv = '/usr/bin/virtualenv'
+env.services = None
+
+
+@task
+def setup():
+ """
+ Setup all needed directories.
+ """
+ require('hosts', 'app_path')
+
+ if not files.exists(env.app_path):
+ run('mkdir -p %(app_path)s' % env, pty=True)
+ with cd(env.app_path):
+ for subdir in 'releases', 'packages', 'log', 'samples':
+ if not files.exists(subdir):
+ run('mkdir -p %s' % subdir, pty=True)
+ # Install helper manage.py script into root dir.
+ if not files.exists('manage.py'):
+ with settings(full_django_root=get_django_root_path('current')):
+ upload_sample('manage.py', where='', ext='', mode=0755)
+ with cd('%(app_path)s/releases' % env):
+ if not files.exists('current'):
+ run('ln -sfT . current', pty=True)
+ if not files.exists('previous'):
+ run('ln -sfT . previous', pty=True)
+
+ upload_samples()
+
+
+def check_localsettings():
+ return files.exists('%(app_path)s/localsettings.py' % env)
+
+
+@task(default=True)
+def deploy():
+ """
+ Deploy the latest version of the site to the servers,
+ install any required third party modules,
+ install the virtual host and then restart the webserver
+ """
+ require('hosts', 'app_path')
+
+ import time
+ env.release = '%s_%s' % (time.strftime('%Y-%m-%dT%H%M'), check_output(['git', 'rev-parse', 'HEAD']).strip())
+
+ setup()
+ if not check_localsettings():
+ abort('Setup is complete, but\n %(app_path)s/localsettings.py\n'
+ 'is needed for actual deployment.' % env)
+ upload_tar_from_git()
+ copy_localsettings()
+ install_requirements()
+ symlink_current_release()
+ migrate()
+ pre_collectstatic()
+ collectstatic()
+ restart()
+
+@task
+def rollback():
+ """
+ Limited rollback capability. Simple loads the previously current
+ version of the code. Rolling back again will swap between the two.
+ Warning: this will almost certainly go wrong, it there were any migrations
+ in the meantime!
+ """
+ require('hosts', 'app_path')
+ with cd(env.path):
+ run('mv releases/current releases/_previous;', pty=True)
+ run('mv releases/previous releases/current;', pty=True)
+ run('mv releases/_previous releases/previous;', pty=True)
+ collectstatic()
+ restart()
+
+@task
+def deploy_version(version):
+ """
+ Loads the specified version.
+ Warning: this will almost certainly go wrong, it there were any migrations
+ in the meantime!
+ """
+ "Specify a specific version to be made live"
+ require('hosts', 'app_path')
+ env.version = version
+ with cd(env.path):
+ run('rm releases/previous; mv releases/current releases/previous;', pty=True)
+ run('ln -s %(version)s releases/current' % env, pty=True)
+ collectstatic()
+ restart()
+
+@task
+def restart():
+ for service in env.services or ():
+ execute(service)
+
+
+# =====================================================================
+# = Helpers. These are called by other functions rather than directly =
+# =====================================================================
+
+class Service(Task):
+ def upload_sample(self):
+ pass
+
+class DebianGunicorn(Service):
+ def __init__(self, name):
+ super(Task, self).__init__()
+ self.name = name
+
+ def run(self):
+ print '>>> restart webserver using gunicorn-debian'
+ sudo('gunicorn-debian restart %s' % self.name, shell=False)
+
+ def upload_sample(self):
+ with settings(full_django_root=get_django_root_path('current')):
+ upload_sample('gunicorn')
+
+class Apache(Service):
+ def run(self):
+ print '>>> restart webserver by touching WSGI'
+ with path('/sbin'):
+ run('touch %(app_path)s/%(project_name)s/wsgi.py' % env)
+
+class Supervisord(Service):
+ def __init__(self, name):
+ super(Task, self).__init__()
+ self.name = name
+
+ def run(self):
+ print '>>> supervisord: restart %s' % self.name
+ sudo('supervisorctl restart %s' % self.name, shell=False)
+
+class Command(Task):
+ def __init__(self, commands, working_dir):
+ if not hasattr(commands, '__iter__'):
+ commands = [commands]
+ self.name = 'Command: %s @ %s' % (commands, working_dir)
+ self.commands = commands
+ self.working_dir = working_dir
+
+ def run(self):
+ require('app_path')
+ with cd(join('%(app_path)s/releases/current' % env, self.working_dir)):
+ for command in self.commands:
+ run(command)
+
+def upload_samples():
+ upload_localsettings_sample()
+ upload_nginx_sample()
+ for service in env.services:
+ service.upload_sample()
+
+def upload_sample(name, where="samples/", ext='.sample', **kwargs):
+ require('app_path', 'project_name')
+ upload_path = '%s/%s%s%s' % (env['app_path'], where, name, ext)
+ if files.exists(upload_path):
+ return
+ print '>>> upload %s template' % name
+ template = '%(project_name)s/' % env + name + '.template'
+ if not exists(template):
+ template = join(dirname(abspath(__file__)), 'templates/' + name + '.template')
+ files.upload_template(template, upload_path, env, **kwargs)
+
+def upload_localsettings_sample():
+ "Fill out localsettings template and upload as a sample."
+ env.secret_key = get_random_string(50)
+ upload_sample('localsettings.py', where="")
+
+upload_nginx_sample = lambda: upload_sample('nginx')
+
+def upload_tar_from_git():
+ "Create an archive from the current Git branch and upload it"
+ print '>>> upload tar from git'
+ require('release', provided_by=[deploy])
+ require('app_path')
+ local('git-archive-all.sh --format tar %(release)s.tar' % env)
+ local('gzip %(release)s.tar' % env)
+ run('mkdir -p %(app_path)s/releases/%(release)s' % env, pty=True)
+ run('mkdir -p %(app_path)s/packages' % env, pty=True)
+ put('%(release)s.tar.gz' % env, '%(app_path)s/packages/' % env)
+ run('cd %(app_path)s/releases/%(release)s && tar zxf ../../packages/%(release)s.tar.gz' % env, pty=True)
+ local('rm %(release)s.tar.gz' % env)
+
+def install_requirements():
+ "Install the required packages from the requirements file using pip"
+ print '>>> install requirements'
+ require('release', provided_by=[deploy])
+ require('app_path')
+ if not files.exists('%(app_path)s/ve' % env):
+ require('virtualenv')
+ run('%(virtualenv)s %(app_path)s/ve' % env, pty=True)
+ with cd('%(app_path)s/releases/%(release)s' % env):
+ run('%(app_path)s/ve/bin/pip install -r requirements.txt' % env, pty=True)
+ with cd(get_django_root_path(env['release'])):
+ # Install DB requirement
+ database_reqs = {
+ 'django.db.backends.postgresql_psycopg2': 'psycopg2',
+ 'django.db.backends.mysql': 'MySQL-python',
+ }
+ databases = run('''DJANGO_SETTINGS_MODULE=%(project_name)s.settings %(app_path)s/ve/bin/python -c 'from django.conf import settings; print " ".join(set([d["ENGINE"] for d in settings.DATABASES.values()]))' ''' % env)
+ for database in databases.split():
+ if database in database_reqs:
+ # TODO: set pip default pypi
+ run('%(app_path)s/ve/bin/pip install ' % env + database_reqs[database])
+
+
+def copy_localsettings():
+ "Copy localsettings.py from root directory to release directory (if this file exists)"
+ print ">>> copy localsettings"
+ require('release', provided_by=[deploy])
+ require('app_path', 'project_name')
+
+ with settings(warn_only=True):
+ copy_to = join(get_django_root_path(env['release']), env.get('localsettings_dst_path', env['project_name']))
+ run('cp %(app_path)s/localsettings.py ' % env + copy_to)
+
+def symlink_current_release():
+ "Symlink our current release"
+ print '>>> symlink current release'
+ require('release', provided_by=[deploy])
+ require('app_path')
+ with cd(env.app_path):
+ run('rm releases/previous; mv releases/current releases/previous')
+ run('ln -s %(release)s releases/current' % env)
+
+def migrate():
+ "Update the database"
+ print '>>> migrate'
+ require('app_path', 'project_name')
+ with cd(get_django_root_path('current')):
+ run('%(app_path)s/ve/bin/python manage.py syncdb --noinput' % env, pty=True)
+ for app, migration in env.get('migrate_fake', ()):
+ run('%s/ve/bin/python manage.py migrate %s --fake %s' % (env.app_path, app, migration), pty=True)
+ run('%(app_path)s/ve/bin/python manage.py migrate' % env, pty=True)
+
+def pre_collectstatic():
+ print '>>> pre_collectstatic'
+ for task in env.get('pre_collectstatic', []):
+ execute(task)
+
+def collectstatic():
+ """Collect static files"""
+ print '>>> collectstatic'
+ if env.get('skip_collect_static', False):
+ print '... skipped'
+ return
+ require('app_path', 'project_name')
+ with cd(get_django_root_path('current')):
+ run('%(app_path)s/ve/bin/python manage.py collectstatic --noinput' % env, pty=True)
+
+
+def get_django_root_path(release):
+ require('app_path')
+ path = '%(app_path)s/releases/%(release)s' % dict(app_path = env['app_path'], release = release)
+ if 'django_root_path' in env:
+ path = join(path, env['django_root_path'])
+ return path
fnp / fnpdeploy.git / commitdiff