# vim: tabstop=4 shiftwidth=4 softtabstop=4

#    Copyright (C) 2012 Yahoo! Inc. All Rights Reserved.
#    Copyright (C) 2012 Dreamhost Inc. All Rights Reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

"""Platform-specific logic for Ubunutu Oneiric components.
"""

import tempfile
import time

from devstack.components import db
from devstack import log as logging
from devstack import shell as sh
from devstack import utils
from devstack.packaging import apt

LOG = logging.getLogger(__name__)


class OneiricDBInstaller(db.DBInstaller):

    def _configure_db_confs(self):
        LOG.info("Fixing up %s mysql configs.", self.distro.name)
        fc = sh.load_file('/etc/mysql/my.cnf')
        lines = fc.splitlines()
        new_lines = list()
        for line in lines:
            if line.startswith('bind-address'):
                line = 'bind-address = %s' % ('0.0.0.0')
            new_lines.append(line)
        fc = utils.joinlinesep(*new_lines)
        with sh.Rooted(True):
            sh.write_file('/etc/mysql/my.cnf', fc)


class OneiricAptPackager(apt.AptPackager):

    def _pkg_remove_special(self, name, pkginfo):
        if name == 'rabbitmq-server':
            #https://bugs.launchpad.net/ubuntu/+source/rabbitmq-server/+bug/878597
            #https://bugs.launchpad.net/ubuntu/+source/rabbitmq-server/+bug/878600
            LOG.info("Handling special remove of %s." % (name))
            pkg_full = self._format_pkg(name, pkginfo.get("version"))
            cmd = apt.APT_GET + apt.APT_REMOVE + [pkg_full]
            self._execute_apt(cmd)
            #probably useful to do this
            time.sleep(1)
            #purge
            cmd = apt.APT_GET + apt.APT_PURGE + [pkg_full]
            self._execute_apt(cmd)
            return True
        return False

    def _pkg_install_special(self, name, pkginfo):
        if name == 'rabbitmq-server':
            #https://bugs.launchpad.net/ubuntu/+source/rabbitmq-server/+bug/878597
            #https://bugs.launchpad.net/ubuntu/+source/rabbitmq-server/+bug/878600
            LOG.info("Handling special install of %s." % (name))
            #this seems to be a temporary fix for that bug
            with tempfile.TemporaryFile() as f:
                pkg_full = self._format_pkg(name, pkginfo.get("version"))
                cmd = apt.APT_GET + apt.APT_INSTALL + [pkg_full]
                self._execute_apt(cmd, stdout_fh=f, stderr_fh=f)
                return True
        return False