How to use _pcall method in tox

Best Python code snippet using tox_python

deploy.py

Source:deploy.py

...35        return "%s returned ERROR: %s" % (self.cmd, self.retcode)36def _popen(cmd, **kwargs):37    print ' '.join(cmd)38    return subprocess.Popen(cmd, **kwargs)39def _pcall(cmd, **kwargs):40    print ' '.join(cmd)41    retcode = subprocess.call(cmd, **kwargs)42    if retcode:43        raise ProcessException(cmd, retcode)44    return retcode45def _getenv(name):46    try:47        var = os.environ[name]48        return var49    except:50        raise Usage("Error: environment variable '%s' not set" % name)51def _template(source, dest, mapping=os.environ):52    """53    Takes source file and writes it to dest using mapping.54    """55    # read the template into a string56    source_file = open(source)57    contents = source_file.read()58    source_file.close()59    # substitute the variables60    template = Template(contents)61    result = template.substitute(mapping)62    # write the template to dest63    dest_file = open(dest, 'w')64    dest_file.write(result)65    dest_file.close()66def _update_pgpass(hostname, database, username, password):67    """68    Using the DB_* env vars, updates the pgpass file.69    """70    pgpass_line = "%s:*:%s:%s" % (hostname, database, username)71    pgpass_filename = os.path.expanduser('~postgres/.pgpass')72    try:73        # if exists the .pgpass file, move it then write it out without74        os.rename(pgpass_filename, '%s.tmp' % pgpass_filename)75        pgpass_old = open('%s.tmp' % pgpass_filename, 'r')76        pgpass = open(pgpass_filename, 'w')77        for line in pgpass_old:78            # skip if the first part of the line matches our line79            if line[:len(pgpass_line)] != pgpass_line:80                pgpass.write(line)81        pgpass.close()82    except:83        # file doesn't exist84        pgpass = open(pgpass_filename, 'w')85        pgpass.close()86    # append new line87    pgpass_line = '%s:%s\n' % (pgpass_line, password)88    print "Updating .pgpass - %s" % pgpass_line89    pgpass = open(pgpass_filename, 'a')90    pgpass.write(pgpass_line)91    pgpass.close()92    os.chmod(pgpass_filename, 0600)93    os.chown(pgpass_filename, pwd.getpwnam('postgres')[2], pwd.getpwnam('postgres')[3])94def do_database():95    """96    If DB_SETUP is True then it wipes the database.97    98    If BUILD_TYPE is 'staging' then it migrates the db using 99    env vars DB_COPY_*100    101    Env vars used:102     * DB_USER103     * DB_PASS104     * DB_NAME105    """106    DB_USER = _getenv('DB_USER')107    DB_PASS = _getenv('DB_PASS')108    DB_NAME = _getenv('DB_NAME')109    DB_HOST = _getenv('DB_HOST')110    DB_SETUP = eval(_getenv('DB_SETUP'))111    DB_COPY = eval(os.environ.get('DB_COPY','False'))112    # dev only resets db 113    if DB_SETUP:114        print "Setting up the database"115        # update the .pgpass file116        _update_pgpass(DB_HOST, DB_NAME, DB_USER, DB_PASS)117        # drop db: sudo -u postgres dropdb $DB_NAME118        try:119            _pcall(['sudo', '-u', 'postgres', 'dropdb', DB_NAME], stderr=open('/dev/null', 'w'))120        except:121            pass122        # drop db user: sudo -u postgres dropuser $DB_USER123        try:124            _pcall(['sudo', '-u', 'postgres', 'dropuser', DB_USER], stderr=open('/dev/null', 'w'))125        except:126            pass127        # create user: sudo -u postgres psql postgres128        p = _popen(['sudo', '-u', 'postgres', 'psql'], stdin=subprocess.PIPE)129        p.stdin.write("CREATE ROLE %s PASSWORD '%s' NOSUPERUSER NOCREATEDB NOCREATEROLE INHERIT LOGIN;\n" % (DB_USER, DB_PASS))130        p.stdin.close()131        p.wait()132        # create db: sudo -u postgres createdb -O $DB_USER $DB_NAME133        _pcall(['sudo', '-u', 'postgres', 'createdb', '-O', DB_USER, DB_NAME])134    if DB_COPY:135        print "Copying database"136        # get the migration db details137        DB_COPY_USER = _getenv('DB_COPY_USER')138        DB_COPY_PASS = _getenv('DB_COPY_PASS')139        DB_COPY_NAME = _getenv('DB_COPY_NAME')140        DB_COPY_HOST = _getenv('DB_COPY_HOST')141        # update the .pgpass file142        _update_pgpass(DB_COPY_HOST, DB_COPY_NAME, DB_COPY_USER, DB_COPY_PASS)143        # dump the database to a tempfile144        import tempfile145        (tmp_fd, tfilename) = tempfile.mkstemp()146        print "Dumping database '%s' to file '%s'" % (DB_COPY_NAME, tfilename)147        tfile = os.fdopen(tmp_fd, 'rw')148        # pg_dump database > tempfile149        p = _popen(['sudo', '-u', 'postgres',150                         'pg_dump', '-v',151                         '-h', DB_COPY_HOST,152                         '-U', DB_COPY_USER,153                         '-O',154                         DB_COPY_NAME],155                         stdin=subprocess.PIPE,156                         stdout=tfile)157        # prompts for password158        p.wait()159        tfile.seek(0)160        # load up dump into new db161        p = _popen(['sudo', '-u', 'postgres',162                              'psql',163                              '-d', DB_NAME,164                              '-h', DB_HOST,165                              '-U', DB_USER,166                              ],167                              stdin=subprocess.PIPE)168        p.stdin.write(tfile.read())169        p.stdin.close()170        p.wait()171def do_settingsfile(deploy_dir):172    """173    Writes the setting file from a template.174    """175    print "Writing out settings file"176    _template(177              os.path.join(deploy_dir, 'settings_template.py'),178              os.path.join(deploy_dir, 'settings_local.py'),179              )180def do_virtualenv(deploy_dir):181    """182    Set up the virtual environment.183    """184    print "Setting up virtual environment"185    # python lib/pinax/scripts/pinax-boot.py --development --source=lib/pinax pinax-env  --django-version=$DJANGO_VERSION186    # '--django-version=%s' % _getenv('DJANGO_VERSION'),187    _pcall(['python', 'lib/pinax/scripts/pinax-boot.py', '--development', '--source=lib/pinax', 'pinax-env'])188    # activate it189    activate_this = os.path.join(deploy_dir, "pinax-env/bin/activate_this.py")190    execfile(activate_this, dict(__file__=activate_this))191    os.environ['PATH'] = '%s:%s' % (os.path.join(deploy_dir, 'pinax-env/bin'), _getenv('PATH'))192    # install requirements: pip install --no-deps --requirement requirements.txt193    _pcall(['pip', 'install', '--no-deps', '--requirement', 'requirements.txt'])194    195def do_django(deploy_dir):196    """197    This runs the various django commands to setup the media, database, etc198    """199    print "Running django commands"200    201    _pcall(['python', 'manage.py', 'build_static', '--noinput', ])202    _pcall(['sudo', 'apt-get', 'install', 'python-imaging', ])203    # syncdb: python manage.py syncdb --noinput204    _pcall(['python', 'manage.py', 'syncdb', '--noinput', ])205    DB_MIGRATE = eval(os.environ.get('DB_MIGRATE', 'False'))206    if DB_MIGRATE:207        # run custom migrate script208        if os.path.isfile(os.path.join(deploy_dir, 'deploy/db_migrate.sh')):209            os.chmod(os.path.join(deploy_dir, 'deploy/db_migrate.sh'), 0775)210            _pcall([os.path.join(deploy_dir, 'deploy/db_migrate.sh'), ])211    else:212        # run generic migrate: python manage.py migrate --all -v 2213        _pcall(['python', 'manage.py', 'migrate', '--all', '-v', '2'])214    # fixtures215    try:216        _pcall(['python', 'manage.py', 'loaddata', _getenv('FIXTURE_FILE'), ])217    except:218        # no fixture file219        pass220    # chown the deploy dir to be the apache user221    APACHE_USER = _getenv('APACHE_USER')222    _pcall(['chown', '-R', APACHE_USER, deploy_dir])223def do_cron(deploy_dir):224    """225    Setup the cron template226    """227    print "Creating cron file"228    # get vars229    cron_filename = _getenv('CRON_FILE')230    cronfile = os.path.join('/etc/cron.d/', cron_filename)231    # write out the cron template232    _template(233              os.path.join(deploy_dir, 'conf/cron.template'),234              cronfile,235              )236    # need to be owned by root237    os.chown(cronfile, pwd.getpwnam('root')[2], -1)238    # need to be exec239    os.chmod(cronfile, 0775)240    # make chonograph.sh executable241    os.chmod(os.path.join(deploy_dir, 'deploy/chronograph.sh'), 0775)242def do_apache(deploy_dir):243    """244    Setups apache245    """246    print "Setting up Apache2"247    # enable required mods248    print "Enabling mod_rewrite"249    _pcall(['a2enmod', 'rewrite'])250    apache_conf = os.path.join('/etc/apache2/sites-available', _getenv('APACHE_CONF'))251    # rewrite config252    print "Writing out Apache2 conf: %s" % apache_conf253    _template(254              os.path.join(deploy_dir, 'conf/http.conf.template'),255              apache_conf,256              )257    # enable if needed258    _pcall(['a2ensite', _getenv('APACHE_CONF')])259    print "Testing Apache2 config"260    retcode = _pcall(['apache2ctl', 'configtest'])261    if retcode:262        print "Error in Apache2 config"263        # disable site264        _pcall(['a2dissite', _getenv('APACHE_CONF')])265        raise Usage('Error in Apache2 config')266    print "Restarting Apache"267    _pcall(['apache2ctl', 'restart'])268def do_sitemedia(deploy_dir):269    """270    Copies the site media directory.271    """272    site_media_src = os.environ.get('COPY_SITE_MEDIA', None)273    if site_media_src:274        site_media_src = os.path.abspath(os.path.join(deploy_dir, site_media_src))275        # rsync -avz site_media_src site_media276        _pcall(['rsync', '-avz', site_media_src, deploy_dir])277def debug_env():278    import sys279    print "debug env"280    print "PATH=%s" % _getenv('PATH')281    print "sys path:"282    for path in sys.path:283        print path284def process(deploy_dir):285    """286    Deploys the server to the directory.287    """288    # setup the database289    do_database()290    # setup the settings file...

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