Merge lp:~gnuoy/charms/trusty/cinder-ceph/workloadstatus into lp:~openstack-charmers-archive/charms/trusty/cinder-ceph/next

[Liam Young]

[uosci-testing-bot (uosci-testing-bot)]

charm_lint_check #11544 cinder-ceph-next for gnuoy mp273861
    LINT OK: passed

Build: http://10.245.162.77:8080/job/charm_lint_check/11544/

[uosci-testing-bot (uosci-testing-bot)]

charm_unit_test #10736 cinder-ceph-next for gnuoy mp273861
    UNIT OK: passed

Build: http://10.245.162.77:8080/job/charm_unit_test/10736/

[uosci-testing-bot (uosci-testing-bot)]

charm_amulet_test #7245 cinder-ceph-next for gnuoy mp273861
    AMULET OK: passed

Build: http://10.245.162.77:8080/job/charm_amulet_test/7245/

[James Page (james-page)]

I merged this with a tweak to drop the optional function from set_os_workload_status; as this charm does not have any optional interfaces, it was really not required.

=== modified file 'charm-helpers-hooks.yaml'
--- charm-helpers-hooks.yaml	2015-07-31 13:11:44 +0000
+++ charm-helpers-hooks.yaml	2015-10-08 15:47:11 +0000
@@ -5,6 +5,7 @@
     - cli
     - fetch
     - contrib.openstack|inc=*
+    - contrib.openstack.utils
     - contrib.storage
     - contrib.hahelpers
     - contrib.network.ip

=== modified file 'hooks/charmhelpers/contrib/network/ip.py'
--- hooks/charmhelpers/contrib/network/ip.py	2015-09-03 09:44:48 +0000
+++ hooks/charmhelpers/contrib/network/ip.py	2015-10-08 15:47:11 +0000
@@ -23,7 +23,7 @@
 from functools import partial
 
 from charmhelpers.core.hookenv import unit_get
-from charmhelpers.fetch import apt_install
+from charmhelpers.fetch import apt_install, apt_update
 from charmhelpers.core.hookenv import (
     log,
     WARNING,
@@ -32,13 +32,15 @@
 try:
     import netifaces
 except ImportError:
-    apt_install('python-netifaces')
+    apt_update(fatal=True)
+    apt_install('python-netifaces', fatal=True)
     import netifaces
 
 try:
     import netaddr
 except ImportError:
-    apt_install('python-netaddr')
+    apt_update(fatal=True)
+    apt_install('python-netaddr', fatal=True)
     import netaddr
 
 

=== modified file 'hooks/charmhelpers/contrib/openstack/amulet/deployment.py'
--- hooks/charmhelpers/contrib/openstack/amulet/deployment.py	2015-08-18 17:34:34 +0000
+++ hooks/charmhelpers/contrib/openstack/amulet/deployment.py	2015-10-08 15:47:11 +0000
@@ -44,20 +44,31 @@
            Determine if the local branch being tested is derived from its
            stable or next (dev) branch, and based on this, use the corresonding
            stable or next branches for the other_services."""
+
+        # Charms outside the lp:~openstack-charmers namespace
         base_charms = ['mysql', 'mongodb', 'nrpe']
 
+        # Force these charms to current series even when using an older series.
+        # ie. Use trusty/nrpe even when series is precise, as the P charm
+        # does not possess the necessary external master config and hooks.
+        force_series_current = ['nrpe']
+
         if self.series in ['precise', 'trusty']:
             base_series = self.series
         else:
             base_series = self.current_next
 
-        if self.stable:
-            for svc in other_services:
+        for svc in other_services:
+            if svc['name'] in force_series_current:
+                base_series = self.current_next
+            # If a location has been explicitly set, use it
+            if svc.get('location'):
+                continue
+            if self.stable:
                 temp = 'lp:charms/{}/{}'
                 svc['location'] = temp.format(base_series,
                                               svc['name'])
-        else:
-            for svc in other_services:
+            else:
                 if svc['name'] in base_charms:
                     temp = 'lp:charms/{}/{}'
                     svc['location'] = temp.format(base_series,
@@ -66,6 +77,7 @@
                     temp = 'lp:~openstack-charmers/charms/{}/{}/next'
                     svc['location'] = temp.format(self.current_next,
                                                   svc['name'])
+
         return other_services
 
     def _add_services(self, this_service, other_services):
@@ -77,21 +89,23 @@
 
         services = other_services
         services.append(this_service)
+
+        # Charms which should use the source config option
         use_source = ['mysql', 'mongodb', 'rabbitmq-server', 'ceph',
                       'ceph-osd', 'ceph-radosgw']
-        # Most OpenStack subordinate charms do not expose an origin option
-        # as that is controlled by the principle.
-        ignore = ['cinder-ceph', 'hacluster', 'neutron-openvswitch', 'nrpe']
+
+        # Charms which can not use openstack-origin, ie. many subordinates
+        no_origin = ['cinder-ceph', 'hacluster', 'neutron-openvswitch', 'nrpe']
 
         if self.openstack:
             for svc in services:
-                if svc['name'] not in use_source + ignore:
+                if svc['name'] not in use_source + no_origin:
                     config = {'openstack-origin': self.openstack}
                     self.d.configure(svc['name'], config)
 
         if self.source:
             for svc in services:
-                if svc['name'] in use_source and svc['name'] not in ignore:
+                if svc['name'] in use_source and svc['name'] not in no_origin:
                     config = {'source': self.source}
                     self.d.configure(svc['name'], config)
 

=== modified file 'hooks/charmhelpers/contrib/openstack/amulet/utils.py'
--- hooks/charmhelpers/contrib/openstack/amulet/utils.py	2015-07-29 10:50:52 +0000
+++ hooks/charmhelpers/contrib/openstack/amulet/utils.py	2015-10-08 15:47:11 +0000
@@ -27,6 +27,7 @@
 import heatclient.v1.client as heat_client
 import keystoneclient.v2_0 as keystone_client
 import novaclient.v1_1.client as nova_client
+import pika
 import swiftclient
 
 from charmhelpers.contrib.amulet.utils import (
@@ -602,3 +603,361 @@
             self.log.debug('Ceph {} samples (OK): '
                            '{}'.format(sample_type, samples))
             return None
+
+# rabbitmq/amqp specific helpers:
+    def add_rmq_test_user(self, sentry_units,
+                          username="testuser1", password="changeme"):
+        """Add a test user via the first rmq juju unit, check connection as
+        the new user against all sentry units.
+
+        :param sentry_units: list of sentry unit pointers
+        :param username: amqp user name, default to testuser1
+        :param password: amqp user password
+        :returns: None if successful.  Raise on error.
+        """
+        self.log.debug('Adding rmq user ({})...'.format(username))
+
+        # Check that user does not already exist
+        cmd_user_list = 'rabbitmqctl list_users'
+        output, _ = self.run_cmd_unit(sentry_units[0], cmd_user_list)
+        if username in output:
+            self.log.warning('User ({}) already exists, returning '
+                             'gracefully.'.format(username))
+            return
+
+        perms = '".*" ".*" ".*"'
+        cmds = ['rabbitmqctl add_user {} {}'.format(username, password),
+                'rabbitmqctl set_permissions {} {}'.format(username, perms)]
+
+        # Add user via first unit
+        for cmd in cmds:
+            output, _ = self.run_cmd_unit(sentry_units[0], cmd)
+
+        # Check connection against the other sentry_units
+        self.log.debug('Checking user connect against units...')
+        for sentry_unit in sentry_units:
+            connection = self.connect_amqp_by_unit(sentry_unit, ssl=False,
+                                                   username=username,
+                                                   password=password)
+            connection.close()
+
+    def delete_rmq_test_user(self, sentry_units, username="testuser1"):
+        """Delete a rabbitmq user via the first rmq juju unit.
+
+        :param sentry_units: list of sentry unit pointers
+        :param username: amqp user name, default to testuser1
+        :param password: amqp user password
+        :returns: None if successful or no such user.
+        """
+        self.log.debug('Deleting rmq user ({})...'.format(username))
+
+        # Check that the user exists
+        cmd_user_list = 'rabbitmqctl list_users'
+        output, _ = self.run_cmd_unit(sentry_units[0], cmd_user_list)
+
+        if username not in output:
+            self.log.warning('User ({}) does not exist, returning '
+                             'gracefully.'.format(username))
+            return
+
+        # Delete the user
+        cmd_user_del = 'rabbitmqctl delete_user {}'.format(username)
+        output, _ = self.run_cmd_unit(sentry_units[0], cmd_user_del)
+
+    def get_rmq_cluster_status(self, sentry_unit):
+        """Execute rabbitmq cluster status command on a unit and return
+        the full output.
+
+        :param unit: sentry unit
+        :returns: String containing console output of cluster status command
+        """
+        cmd = 'rabbitmqctl cluster_status'
+        output, _ = self.run_cmd_unit(sentry_unit, cmd)
+        self.log.debug('{} cluster_status:\n{}'.format(
+            sentry_unit.info['unit_name'], output))
+        return str(output)
+
+    def get_rmq_cluster_running_nodes(self, sentry_unit):
+        """Parse rabbitmqctl cluster_status output string, return list of
+        running rabbitmq cluster nodes.
+
+        :param unit: sentry unit
+        :returns: List containing node names of running nodes
+        """
+        # NOTE(beisner): rabbitmqctl cluster_status output is not
+        # json-parsable, do string chop foo, then json.loads that.
+        str_stat = self.get_rmq_cluster_status(sentry_unit)
+        if 'running_nodes' in str_stat:
+            pos_start = str_stat.find("{running_nodes,") + 15
+            pos_end = str_stat.find("]},", pos_start) + 1
+            str_run_nodes = str_stat[pos_start:pos_end].replace("'", '"')
+            run_nodes = json.loads(str_run_nodes)
+            return run_nodes
+        else:
+            return []
+
+    def validate_rmq_cluster_running_nodes(self, sentry_units):
+        """Check that all rmq unit hostnames are represented in the
+        cluster_status output of all units.
+
+        :param host_names: dict of juju unit names to host names
+        :param units: list of sentry unit pointers (all rmq units)
+        :returns: None if successful, otherwise return error message
+        """
+        host_names = self.get_unit_hostnames(sentry_units)
+        errors = []
+
+        # Query every unit for cluster_status running nodes
+        for query_unit in sentry_units:
+            query_unit_name = query_unit.info['unit_name']
+            running_nodes = self.get_rmq_cluster_running_nodes(query_unit)
+
+            # Confirm that every unit is represented in the queried unit's
+            # cluster_status running nodes output.
+            for validate_unit in sentry_units:
+                val_host_name = host_names[validate_unit.info['unit_name']]
+                val_node_name = 'rabbit@{}'.format(val_host_name)
+
+                if val_node_name not in running_nodes:
+                    errors.append('Cluster member check failed on {}: {} not '
+                                  'in {}\n'.format(query_unit_name,
+                                                   val_node_name,
+                                                   running_nodes))
+        if errors:
+            return ''.join(errors)
+
+    def rmq_ssl_is_enabled_on_unit(self, sentry_unit, port=None):
+        """Check a single juju rmq unit for ssl and port in the config file."""
+        host = sentry_unit.info['public-address']
+        unit_name = sentry_unit.info['unit_name']
+
+        conf_file = '/etc/rabbitmq/rabbitmq.config'
+        conf_contents = str(self.file_contents_safe(sentry_unit,
+                                                    conf_file, max_wait=16))
+        # Checks
+        conf_ssl = 'ssl' in conf_contents
+        conf_port = str(port) in conf_contents
+
+        # Port explicitly checked in config
+        if port and conf_port and conf_ssl:
+            self.log.debug('SSL is enabled  @{}:{} '
+                           '({})'.format(host, port, unit_name))
+            return True
+        elif port and not conf_port and conf_ssl:
+            self.log.debug('SSL is enabled @{} but not on port {} '
+                           '({})'.format(host, port, unit_name))
+            return False
+        # Port not checked (useful when checking that ssl is disabled)
+        elif not port and conf_ssl:
+            self.log.debug('SSL is enabled  @{}:{} '
+                           '({})'.format(host, port, unit_name))
+            return True
+        elif not conf_ssl:
+            self.log.debug('SSL not enabled @{}:{} '
+                           '({})'.format(host, port, unit_name))
+            return False
+        else:
+            msg = ('Unknown condition when checking SSL status @{}:{} '
+                   '({})'.format(host, port, unit_name))
+            amulet.raise_status(amulet.FAIL, msg)
+
+    def validate_rmq_ssl_enabled_units(self, sentry_units, port=None):
+        """Check that ssl is enabled on rmq juju sentry units.
+
+        :param sentry_units: list of all rmq sentry units
+        :param port: optional ssl port override to validate
+        :returns: None if successful, otherwise return error message
+        """
+        for sentry_unit in sentry_units:
+            if not self.rmq_ssl_is_enabled_on_unit(sentry_unit, port=port):
+                return ('Unexpected condition:  ssl is disabled on unit '
+                        '({})'.format(sentry_unit.info['unit_name']))
+        return None
+
+    def validate_rmq_ssl_disabled_units(self, sentry_units):
+        """Check that ssl is enabled on listed rmq juju sentry units.
+
+        :param sentry_units: list of all rmq sentry units
+        :returns: True if successful.  Raise on error.
+        """
+        for sentry_unit in sentry_units:
+            if self.rmq_ssl_is_enabled_on_unit(sentry_unit):
+                return ('Unexpected condition:  ssl is enabled on unit '
+                        '({})'.format(sentry_unit.info['unit_name']))
+        return None
+
+    def configure_rmq_ssl_on(self, sentry_units, deployment,
+                             port=None, max_wait=60):
+        """Turn ssl charm config option on, with optional non-default
+        ssl port specification.  Confirm that it is enabled on every
+        unit.
+
+        :param sentry_units: list of sentry units
+        :param deployment: amulet deployment object pointer
+        :param port: amqp port, use defaults if None
+        :param max_wait: maximum time to wait in seconds to confirm
+        :returns: None if successful.  Raise on error.
+        """
+        self.log.debug('Setting ssl charm config option:  on')
+
+        # Enable RMQ SSL
+        config = {'ssl': 'on'}
+        if port:
+            config['ssl_port'] = port
+
+        deployment.configure('rabbitmq-server', config)
+
+        # Confirm
+        tries = 0
+        ret = self.validate_rmq_ssl_enabled_units(sentry_units, port=port)
+        while ret and tries < (max_wait / 4):
+            time.sleep(4)
+            self.log.debug('Attempt {}: {}'.format(tries, ret))
+            ret = self.validate_rmq_ssl_enabled_units(sentry_units, port=port)
+            tries += 1
+
+        if ret:
+            amulet.raise_status(amulet.FAIL, ret)
+
+    def configure_rmq_ssl_off(self, sentry_units, deployment, max_wait=60):
+        """Turn ssl charm config option off, confirm that it is disabled
+        on every unit.
+
+        :param sentry_units: list of sentry units
+        :param deployment: amulet deployment object pointer
+        :param max_wait: maximum time to wait in seconds to confirm
+        :returns: None if successful.  Raise on error.
+        """
+        self.log.debug('Setting ssl charm config option:  off')
+
+        # Disable RMQ SSL
+        config = {'ssl': 'off'}
+        deployment.configure('rabbitmq-server', config)
+
+        # Confirm
+        tries = 0
+        ret = self.validate_rmq_ssl_disabled_units(sentry_units)
+        while ret and tries < (max_wait / 4):
+            time.sleep(4)
+            self.log.debug('Attempt {}: {}'.format(tries, ret))
+            ret = self.validate_rmq_ssl_disabled_units(sentry_units)
+            tries += 1
+
+        if ret:
+            amulet.raise_status(amulet.FAIL, ret)
+
+    def connect_amqp_by_unit(self, sentry_unit, ssl=False,
+                             port=None, fatal=True,
+                             username="testuser1", password="changeme"):
+        """Establish and return a pika amqp connection to the rabbitmq service
+        running on a rmq juju unit.
+
+        :param sentry_unit: sentry unit pointer
+        :param ssl: boolean, default to False
+        :param port: amqp port, use defaults if None
+        :param fatal: boolean, default to True (raises on connect error)
+        :param username: amqp user name, default to testuser1
+        :param password: amqp user password
+        :returns: pika amqp connection pointer or None if failed and non-fatal
+        """
+        host = sentry_unit.info['public-address']
+        unit_name = sentry_unit.info['unit_name']
+
+        # Default port logic if port is not specified
+        if ssl and not port:
+            port = 5671
+        elif not ssl and not port:
+            port = 5672
+
+        self.log.debug('Connecting to amqp on {}:{} ({}) as '
+                       '{}...'.format(host, port, unit_name, username))
+
+        try:
+            credentials = pika.PlainCredentials(username, password)
+            parameters = pika.ConnectionParameters(host=host, port=port,
+                                                   credentials=credentials,
+                                                   ssl=ssl,
+                                                   connection_attempts=3,
+                                                   retry_delay=5,
+                                                   socket_timeout=1)
+            connection = pika.BlockingConnection(parameters)
+            assert connection.server_properties['product'] == 'RabbitMQ'
+            self.log.debug('Connect OK')
+            return connection
+        except Exception as e:
+            msg = ('amqp connection failed to {}:{} as '
+                   '{} ({})'.format(host, port, username, str(e)))
+            if fatal:
+                amulet.raise_status(amulet.FAIL, msg)
+            else:
+                self.log.warn(msg)
+                return None
+
+    def publish_amqp_message_by_unit(self, sentry_unit, message,
+                                     queue="test", ssl=False,
+                                     username="testuser1",
+                                     password="changeme",
+                                     port=None):
+        """Publish an amqp message to a rmq juju unit.
+
+        :param sentry_unit: sentry unit pointer
+        :param message: amqp message string
+        :param queue: message queue, default to test
+        :param username: amqp user name, default to testuser1
+        :param password: amqp user password
+        :param ssl: boolean, default to False
+        :param port: amqp port, use defaults if None
+        :returns: None.  Raises exception if publish failed.
+        """
+        self.log.debug('Publishing message to {} queue:\n{}'.format(queue,
+                                                                    message))
+        connection = self.connect_amqp_by_unit(sentry_unit, ssl=ssl,
+                                               port=port,
+                                               username=username,
+                                               password=password)
+
+        # NOTE(beisner): extra debug here re: pika hang potential:
+        #   https://github.com/pika/pika/issues/297
+        #   https://groups.google.com/forum/#!topic/rabbitmq-users/Ja0iyfF0Szw
+        self.log.debug('Defining channel...')
+        channel = connection.channel()
+        self.log.debug('Declaring queue...')
+        channel.queue_declare(queue=queue, auto_delete=False, durable=True)
+        self.log.debug('Publishing message...')
+        channel.basic_publish(exchange='', routing_key=queue, body=message)
+        self.log.debug('Closing channel...')
+        channel.close()
+        self.log.debug('Closing connection...')
+        connection.close()
+
+    def get_amqp_message_by_unit(self, sentry_unit, queue="test",
+                                 username="testuser1",
+                                 password="changeme",
+                                 ssl=False, port=None):
+        """Get an amqp message from a rmq juju unit.
+
+        :param sentry_unit: sentry unit pointer
+        :param queue: message queue, default to test
+        :param username: amqp user name, default to testuser1
+        :param password: amqp user password
+        :param ssl: boolean, default to False
+        :param port: amqp port, use defaults if None
+        :returns: amqp message body as string.  Raise if get fails.
+        """
+        connection = self.connect_amqp_by_unit(sentry_unit, ssl=ssl,
+                                               port=port,
+                                               username=username,
+                                               password=password)
+        channel = connection.channel()
+        method_frame, _, body = channel.basic_get(queue)
+
+        if method_frame:
+            self.log.debug('Retreived message from {} queue:\n{}'.format(queue,
+                                                                         body))
+            channel.basic_ack(method_frame.delivery_tag)
+            channel.close()
+            connection.close()
+            return body
+        else:
+            msg = 'No message retrieved.'
+            amulet.raise_status(amulet.FAIL, msg)

=== modified file 'hooks/charmhelpers/contrib/openstack/context.py'
--- hooks/charmhelpers/contrib/openstack/context.py	2015-09-16 01:07:56 +0000
+++ hooks/charmhelpers/contrib/openstack/context.py	2015-10-08 15:47:11 +0000
@@ -14,6 +14,7 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with charm-helpers.  If not, see <http://www.gnu.org/licenses/>.
 
+import glob
 import json
 import os
 import re
@@ -194,10 +195,50 @@
 class OSContextGenerator(object):
     """Base class for all context generators."""
     interfaces = []
+    related = False
+    complete = False
+    missing_data = []
 
     def __call__(self):
         raise NotImplementedError
 
+    def context_complete(self, ctxt):
+        """Check for missing data for the required context data.
+        Set self.missing_data if it exists and return False.
+        Set self.complete if no missing data and return True.
+        """
+        # Fresh start
+        self.complete = False
+        self.missing_data = []
+        for k, v in six.iteritems(ctxt):
+            if v is None or v == '':
+                if k not in self.missing_data:
+                    self.missing_data.append(k)
+
+        if self.missing_data:
+            self.complete = False
+            log('Missing required data: %s' % ' '.join(self.missing_data), level=INFO)
+        else:
+            self.complete = True
+        return self.complete
+
+    def get_related(self):
+        """Check if any of the context interfaces have relation ids.
+        Set self.related and return True if one of the interfaces
+        has relation ids.
+        """
+        # Fresh start
+        self.related = False
+        try:
+            for interface in self.interfaces:
+                if relation_ids(interface):
+                    self.related = True
+            return self.related
+        except AttributeError as e:
+            log("{} {}"
+                "".format(self, e), 'INFO')
+            return self.related
+
 
 class SharedDBContext(OSContextGenerator):
     interfaces = ['shared-db']
@@ -213,6 +254,7 @@
         self.database = database
         self.user = user
         self.ssl_dir = ssl_dir
+        self.rel_name = self.interfaces[0]
 
     def __call__(self):
         self.database = self.database or config('database')
@@ -246,6 +288,7 @@
             password_setting = self.relation_prefix + '_password'
 
         for rid in relation_ids(self.interfaces[0]):
+            self.related = True
             for unit in related_units(rid):
                 rdata = relation_get(rid=rid, unit=unit)
                 host = rdata.get('db_host')
@@ -257,7 +300,7 @@
                     'database_password': rdata.get(password_setting),
                     'database_type': 'mysql'
                 }
-                if context_complete(ctxt):
+                if self.context_complete(ctxt):
                     db_ssl(rdata, ctxt, self.ssl_dir)
                     return ctxt
         return {}
@@ -278,6 +321,7 @@
 
         ctxt = {}
         for rid in relation_ids(self.interfaces[0]):
+            self.related = True
             for unit in related_units(rid):
                 rel_host = relation_get('host', rid=rid, unit=unit)
                 rel_user = relation_get('user', rid=rid, unit=unit)
@@ -287,7 +331,7 @@
                         'database_user': rel_user,
                         'database_password': rel_passwd,
                         'database_type': 'postgresql'}
-                if context_complete(ctxt):
+                if self.context_complete(ctxt):
                     return ctxt
 
         return {}
@@ -348,6 +392,7 @@
             ctxt['signing_dir'] = cachedir
 
         for rid in relation_ids(self.rel_name):
+            self.related = True
             for unit in related_units(rid):
                 rdata = relation_get(rid=rid, unit=unit)
                 serv_host = rdata.get('service_host')
@@ -366,7 +411,7 @@
                              'service_protocol': svc_protocol,
                              'auth_protocol': auth_protocol})
 
-                if context_complete(ctxt):
+                if self.context_complete(ctxt):
                     # NOTE(jamespage) this is required for >= icehouse
                     # so a missing value just indicates keystone needs
                     # upgrading
@@ -405,6 +450,7 @@
         ctxt = {}
         for rid in relation_ids(self.rel_name):
             ha_vip_only = False
+            self.related = True
             for unit in related_units(rid):
                 if relation_get('clustered', rid=rid, unit=unit):
                     ctxt['clustered'] = True
@@ -437,7 +483,7 @@
                 ha_vip_only = relation_get('ha-vip-only',
                                            rid=rid, unit=unit) is not None
 
-                if context_complete(ctxt):
+                if self.context_complete(ctxt):
                     if 'rabbit_ssl_ca' in ctxt:
                         if not self.ssl_dir:
                             log("Charm not setup for ssl support but ssl ca "
@@ -469,7 +515,7 @@
             ctxt['oslo_messaging_flags'] = config_flags_parser(
                 oslo_messaging_flags)
 
-        if not context_complete(ctxt):
+        if not self.complete:
             return {}
 
         return ctxt
@@ -507,7 +553,7 @@
         if not os.path.isdir('/etc/ceph'):
             os.mkdir('/etc/ceph')
 
-        if not context_complete(ctxt):
+        if not self.context_complete(ctxt):
             return {}
 
         ensure_packages(['ceph-common'])
@@ -906,6 +952,19 @@
                     'config': config}
         return ovs_ctxt
 
+    def midonet_ctxt(self):
+        driver = neutron_plugin_attribute(self.plugin, 'driver',
+                                          self.network_manager)
+        midonet_config = neutron_plugin_attribute(self.plugin, 'config',
+                                                  self.network_manager)
+        mido_ctxt = {'core_plugin': driver,
+                     'neutron_plugin': 'midonet',
+                     'neutron_security_groups': self.neutron_security_groups,
+                     'local_ip': unit_private_ip(),
+                     'config': midonet_config}
+
+        return mido_ctxt
+
     def __call__(self):
         if self.network_manager not in ['quantum', 'neutron']:
             return {}
@@ -927,6 +986,8 @@
             ctxt.update(self.nuage_ctxt())
         elif self.plugin == 'plumgrid':
             ctxt.update(self.pg_ctxt())
+        elif self.plugin == 'midonet':
+            ctxt.update(self.midonet_ctxt())
 
         alchemy_flags = config('neutron-alchemy-flags')
         if alchemy_flags:
@@ -1059,7 +1120,7 @@
 
         ctxt = {
             ... other context ...
-            'subordinate_config': {
+            'subordinate_configuration': {
                 'DEFAULT': {
                     'key1': 'value1',
                 },
@@ -1100,22 +1161,23 @@
                     try:
                         sub_config = json.loads(sub_config)
                     except:
-                        log('Could not parse JSON from subordinate_config '
-                            'setting from %s' % rid, level=ERROR)
+                        log('Could not parse JSON from '
+                            'subordinate_configuration setting from %s'
+                            % rid, level=ERROR)
                         continue
 
                     for service in self.services:
                         if service not in sub_config:
-                            log('Found subordinate_config on %s but it contained'
-                                'nothing for %s service' % (rid, service),
-                                level=INFO)
+                            log('Found subordinate_configuration on %s but it '
+                                'contained nothing for %s service'
+                                % (rid, service), level=INFO)
                             continue
 
                         sub_config = sub_config[service]
                         if self.config_file not in sub_config:
-                            log('Found subordinate_config on %s but it contained'
-                                'nothing for %s' % (rid, self.config_file),
-                                level=INFO)
+                            log('Found subordinate_configuration on %s but it '
+                                'contained nothing for %s'
+                                % (rid, self.config_file), level=INFO)
                             continue
 
                         sub_config = sub_config[self.config_file]
@@ -1318,7 +1380,7 @@
             normalized.update({port: port for port in resolved
                                if port in ports})
             if resolved:
-                return {bridge: normalized[port] for port, bridge in
+                return {normalized[port]: bridge for port, bridge in
                         six.iteritems(portmap) if port in normalized.keys()}
 
         return None
@@ -1329,12 +1391,22 @@
     def __call__(self):
         ctxt = {}
         mappings = super(PhyNICMTUContext, self).__call__()
-        if mappings and mappings.values():
-            ports = mappings.values()
+        if mappings and mappings.keys():
+            ports = sorted(mappings.keys())
             napi_settings = NeutronAPIContext()()
             mtu = napi_settings.get('network_device_mtu')
+            all_ports = set()
+            # If any of ports is a vlan device, its underlying device must have
+            # mtu applied first.
+            for port in ports:
+                for lport in glob.glob("/sys/class/net/%s/lower_*" % port):
+                    lport = os.path.basename(lport)
+                    all_ports.add(lport.split('_')[1])
+
+            all_ports = list(all_ports)
+            all_ports.extend(ports)
             if mtu:
-                ctxt["devs"] = '\\n'.join(ports)
+                ctxt["devs"] = '\\n'.join(all_ports)
                 ctxt['mtu'] = mtu
 
         return ctxt
@@ -1366,6 +1438,6 @@
                     'auth_protocol':
                     rdata.get('auth_protocol') or 'http',
                 }
-                if context_complete(ctxt):
+                if self.context_complete(ctxt):
                     return ctxt
         return {}

=== modified file 'hooks/charmhelpers/contrib/openstack/neutron.py'
--- hooks/charmhelpers/contrib/openstack/neutron.py	2015-09-03 09:44:48 +0000
+++ hooks/charmhelpers/contrib/openstack/neutron.py	2015-10-08 15:47:11 +0000
@@ -209,6 +209,20 @@
             'server_packages': ['neutron-server',
                                 'neutron-plugin-plumgrid'],
             'server_services': ['neutron-server']
+        },
+        'midonet': {
+            'config': '/etc/neutron/plugins/midonet/midonet.ini',
+            'driver': 'midonet.neutron.plugin.MidonetPluginV2',
+            'contexts': [
+                context.SharedDBContext(user=config('neutron-database-user'),
+                                        database=config('neutron-database'),
+                                        relation_prefix='neutron',
+                                        ssl_dir=NEUTRON_CONF_DIR)],
+            'services': [],
+            'packages': [[headers_package()] + determine_dkms_package()],
+            'server_packages': ['neutron-server',
+                                'python-neutron-plugin-midonet'],
+            'server_services': ['neutron-server']
         }
     }
     if release >= 'icehouse':
@@ -310,10 +324,10 @@
 def parse_data_port_mappings(mappings, default_bridge='br-data'):
     """Parse data port mappings.
 
-    Mappings must be a space-delimited list of port:bridge mappings.
+    Mappings must be a space-delimited list of bridge:port.
 
-    Returns dict of the form {port:bridge} where port may be an mac address or
-    interface name.
+    Returns dict of the form {port:bridge} where ports may be mac addresses or
+    interface names.
     """
 
     # NOTE(dosaboy): we use rvalue for key to allow multiple values to be

=== modified file 'hooks/charmhelpers/contrib/openstack/templates/ceph.conf'
--- hooks/charmhelpers/contrib/openstack/templates/ceph.conf	2015-07-29 10:50:52 +0000
+++ hooks/charmhelpers/contrib/openstack/templates/ceph.conf	2015-10-08 15:47:11 +0000
@@ -13,3 +13,9 @@
 err to syslog = {{ use_syslog }}
 clog to syslog = {{ use_syslog }}
 
+[client]
+{% if rbd_client_cache_settings -%}
+{% for key, value in rbd_client_cache_settings.iteritems() -%}
+{{ key }} = {{ value }}
+{% endfor -%}
+{%- endif %}
\ No newline at end of file

=== modified file 'hooks/charmhelpers/contrib/openstack/templating.py'
--- hooks/charmhelpers/contrib/openstack/templating.py	2015-07-29 10:50:52 +0000
+++ hooks/charmhelpers/contrib/openstack/templating.py	2015-10-08 15:47:11 +0000
@@ -18,7 +18,7 @@
 
 import six
 
-from charmhelpers.fetch import apt_install
+from charmhelpers.fetch import apt_install, apt_update
 from charmhelpers.core.hookenv import (
     log,
     ERROR,
@@ -29,6 +29,7 @@
 try:
     from jinja2 import FileSystemLoader, ChoiceLoader, Environment, exceptions
 except ImportError:
+    apt_update(fatal=True)
     apt_install('python-jinja2', fatal=True)
     from jinja2 import FileSystemLoader, ChoiceLoader, Environment, exceptions
 
@@ -112,7 +113,7 @@
 
     def complete_contexts(self):
         '''
-        Return a list of interfaces that have atisfied contexts.
+        Return a list of interfaces that have satisfied contexts.
         '''
         if self._complete_contexts:
             return self._complete_contexts
@@ -293,3 +294,30 @@
         [interfaces.extend(i.complete_contexts())
          for i in six.itervalues(self.templates)]
         return interfaces
+
+    def get_incomplete_context_data(self, interfaces):
+        '''
+        Return dictionary of relation status of interfaces and any missing
+        required context data. Example:
+            {'amqp': {'missing_data': ['rabbitmq_password'], 'related': True},
+             'zeromq-configuration': {'related': False}}
+        '''
+        incomplete_context_data = {}
+
+        for i in six.itervalues(self.templates):
+            for context in i.contexts:
+                for interface in interfaces:
+                    related = False
+                    if interface in context.interfaces:
+                        related = context.get_related()
+                        missing_data = context.missing_data
+                        if missing_data:
+                            incomplete_context_data[interface] = {'missing_data': missing_data}
+                        if related:
+                            if incomplete_context_data.get(interface):
+                                incomplete_context_data[interface].update({'related': True})
+                            else:
+                                incomplete_context_data[interface] = {'related': True}
+                        else:
+                            incomplete_context_data[interface] = {'related': False}
+        return incomplete_context_data

=== modified file 'hooks/charmhelpers/contrib/openstack/utils.py'
--- hooks/charmhelpers/contrib/openstack/utils.py	2015-09-03 09:44:48 +0000
+++ hooks/charmhelpers/contrib/openstack/utils.py	2015-10-08 15:47:11 +0000
@@ -25,6 +25,7 @@
 import re
 
 import six
+import traceback
 import yaml
 
 from charmhelpers.contrib.network import ip
@@ -34,12 +35,16 @@
 )
 
 from charmhelpers.core.hookenv import (
+    action_fail,
+    action_set,
     config,
     log as juju_log,
     charm_dir,
     INFO,
     relation_ids,
-    relation_set
+    relation_set,
+    status_set,
+    hook_name
 )
 
 from charmhelpers.contrib.storage.linux.lvm import (
@@ -49,7 +54,8 @@
 )
 
 from charmhelpers.contrib.network.ip import (
-    get_ipv6_addr
+    get_ipv6_addr,
+    is_ipv6,
 )
 
 from charmhelpers.contrib.python.packages import (
@@ -114,6 +120,7 @@
     ('2.2.1', 'kilo'),
     ('2.2.2', 'kilo'),
     ('2.3.0', 'liberty'),
+    ('2.4.0', 'liberty'),
 ])
 
 # >= Liberty version->codename mapping
@@ -142,6 +149,9 @@
     'glance-common': OrderedDict([
         ('11.0.0', 'liberty'),
     ]),
+    'openstack-dashboard': OrderedDict([
+        ('8.0.0', 'liberty'),
+    ]),
 }
 
 DEFAULT_LOOPBACK_SIZE = '5G'
@@ -510,6 +520,12 @@
                                       relation_prefix=None):
     hosts = get_ipv6_addr(dynamic_only=False)
 
+    if config('vip'):
+        vips = config('vip').split()
+        for vip in vips:
+            if vip and is_ipv6(vip):
+                hosts.append(vip)
+
     kwargs = {'database': database,
               'username': database_user,
               'hostname': json.dumps(hosts)}
@@ -745,3 +761,217 @@
         return projects[key]
 
     return None
+
+
+def os_workload_status(configs, required_interfaces, charm_func=None):
+    """
+    Decorator to set workload status based on complete contexts
+    """
+    def wrap(f):
+        @wraps(f)
+        def wrapped_f(*args, **kwargs):
+            # Run the original function first
+            f(*args, **kwargs)
+            # Set workload status now that contexts have been
+            # acted on
+            set_os_workload_status(configs, required_interfaces, charm_func)
+        return wrapped_f
+    return wrap
+
+
+def set_os_workload_status(configs, required_interfaces, charm_func=None):
+    """
+    Set workload status based on complete contexts.
+    status-set missing or incomplete contexts
+    and juju-log details of missing required data.
+    charm_func is a charm specific function to run checking
+    for charm specific requirements such as a VIP setting.
+    """
+    incomplete_rel_data = incomplete_relation_data(configs, required_interfaces)
+    state = 'active'
+    missing_relations = []
+    incomplete_relations = []
+    message = None
+    charm_state = None
+    charm_message = None
+
+    for generic_interface in incomplete_rel_data.keys():
+        related_interface = None
+        missing_data = {}
+        # Related or not?
+        for interface in incomplete_rel_data[generic_interface]:
+            if incomplete_rel_data[generic_interface][interface].get('related'):
+                related_interface = interface
+                missing_data = incomplete_rel_data[generic_interface][interface].get('missing_data')
+        # No relation ID for the generic_interface
+        if not related_interface:
+            juju_log("{} relation is missing and must be related for "
+                     "functionality. ".format(generic_interface), 'WARN')
+            state = 'blocked'
+            if generic_interface not in missing_relations:
+                missing_relations.append(generic_interface)
+        else:
+            # Relation ID exists but no related unit
+            if not missing_data:
+                # Edge case relation ID exists but departing
+                if ('departed' in hook_name() or 'broken' in hook_name()) \
+                        and related_interface in hook_name():
+                    state = 'blocked'
+                    if generic_interface not in missing_relations:
+                        missing_relations.append(generic_interface)
+                    juju_log("{} relation's interface, {}, "
+                             "relationship is departed or broken "
+                             "and is required for functionality."
+                             "".format(generic_interface, related_interface), "WARN")
+                # Normal case relation ID exists but no related unit
+                # (joining)
+                else:
+                    juju_log("{} relations's interface, {}, is related but has "
+                             "no units in the relation."
+                             "".format(generic_interface, related_interface), "INFO")
+            # Related unit exists and data missing on the relation
+            else:
+                juju_log("{} relation's interface, {}, is related awaiting "
+                         "the following data from the relationship: {}. "
+                         "".format(generic_interface, related_interface,
+                                   ", ".join(missing_data)), "INFO")
+            if state != 'blocked':
+                state = 'waiting'
+            if generic_interface not in incomplete_relations \
+                    and generic_interface not in missing_relations:
+                incomplete_relations.append(generic_interface)
+
+    if missing_relations:
+        message = "Missing relations: {}".format(", ".join(missing_relations))
+        if incomplete_relations:
+            message += "; incomplete relations: {}" \
+                       "".format(", ".join(incomplete_relations))
+        state = 'blocked'
+    elif incomplete_relations:
+        message = "Incomplete relations: {}" \
+                  "".format(", ".join(incomplete_relations))
+        state = 'waiting'
+
+    # Run charm specific checks
+    if charm_func:
+        charm_state, charm_message = charm_func(configs)
+        if charm_state != 'active' and charm_state != 'unknown':
+            state = workload_state_compare(state, charm_state)
+            if message:
+                message = "{} {}".format(message, charm_message)
+            else:
+                message = charm_message
+
+    # Set to active if all requirements have been met
+    if state == 'active':
+        message = "Unit is ready"
+        juju_log(message, "INFO")
+
+    status_set(state, message)
+
+
+def workload_state_compare(current_workload_state, workload_state):
+    """ Return highest priority of two states"""
+    hierarchy = {'unknown': -1,
+                 'active': 0,
+                 'maintenance': 1,
+                 'waiting': 2,
+                 'blocked': 3,
+                 }
+
+    if hierarchy.get(workload_state) is None:
+        workload_state = 'unknown'
+    if hierarchy.get(current_workload_state) is None:
+        current_workload_state = 'unknown'
+
+    # Set workload_state based on hierarchy of statuses
+    if hierarchy.get(current_workload_state) > hierarchy.get(workload_state):
+        return current_workload_state
+    else:
+        return workload_state
+
+
+def incomplete_relation_data(configs, required_interfaces):
+    """
+    Check complete contexts against required_interfaces
+    Return dictionary of incomplete relation data.
+
+    configs is an OSConfigRenderer object with configs registered
+
+    required_interfaces is a dictionary of required general interfaces
+    with dictionary values of possible specific interfaces.
+    Example:
+    required_interfaces = {'database': ['shared-db', 'pgsql-db']}
+
+    The interface is said to be satisfied if anyone of the interfaces in the
+    list has a complete context.
+
+    Return dictionary of incomplete or missing required contexts with relation
+    status of interfaces and any missing data points. Example:
+        {'message':
+             {'amqp': {'missing_data': ['rabbitmq_password'], 'related': True},
+              'zeromq-configuration': {'related': False}},
+         'identity':
+             {'identity-service': {'related': False}},
+         'database':
+             {'pgsql-db': {'related': False},
+              'shared-db': {'related': True}}}
+    """
+    complete_ctxts = configs.complete_contexts()
+    incomplete_relations = []
+    for svc_type in required_interfaces.keys():
+        # Avoid duplicates
+        found_ctxt = False
+        for interface in required_interfaces[svc_type]:
+            if interface in complete_ctxts:
+                found_ctxt = True
+        if not found_ctxt:
+            incomplete_relations.append(svc_type)
+    incomplete_context_data = {}
+    for i in incomplete_relations:
+        incomplete_context_data[i] = configs.get_incomplete_context_data(required_interfaces[i])
+    return incomplete_context_data
+
+
+def do_action_openstack_upgrade(package, upgrade_callback, configs):
+    """Perform action-managed OpenStack upgrade.
+
+    Upgrades packages to the configured openstack-origin version and sets
+    the corresponding action status as a result.
+
+    If the charm was installed from source we cannot upgrade it.
+    For backwards compatibility a config flag (action-managed-upgrade) must
+    be set for this code to run, otherwise a full service level upgrade will
+    fire on config-changed.
+
+    @param package: package name for determining if upgrade available
+    @param upgrade_callback: function callback to charm's upgrade function
+    @param configs: templating object derived from OSConfigRenderer class
+
+    @return: True if upgrade successful; False if upgrade failed or skipped
+    """
+    ret = False
+
+    if git_install_requested():
+        action_set({'outcome': 'installed from source, skipped upgrade.'})
+    else:
+        if openstack_upgrade_available(package):
+            if config('action-managed-upgrade'):
+                juju_log('Upgrading OpenStack release')
+
+                try:
+                    upgrade_callback(configs=configs)
+                    action_set({'outcome': 'success, upgrade completed.'})
+                    ret = True
+                except:
+                    action_set({'outcome': 'upgrade failed, see traceback.'})
+                    action_set({'traceback': traceback.format_exc()})
+                    action_fail('do_openstack_upgrade resulted in an '
+                                'unexpected error')
+            else:
+                action_set({'outcome': 'action-managed-upgrade config is '
+                                       'False, skipped upgrade.'})
+        else:
+            action_set({'outcome': 'no upgrade available.'})
+
+    return ret

=== modified file 'hooks/charmhelpers/contrib/storage/linux/ceph.py'
--- hooks/charmhelpers/contrib/storage/linux/ceph.py	2015-09-10 09:30:40 +0000
+++ hooks/charmhelpers/contrib/storage/linux/ceph.py	2015-10-08 15:47:11 +0000
@@ -59,6 +59,8 @@
     apt_install,
 )
 
+from charmhelpers.core.kernel import modprobe
+
 KEYRING = '/etc/ceph/ceph.client.{}.keyring'
 KEYFILE = '/etc/ceph/ceph.client.{}.key'
 
@@ -291,17 +293,6 @@
     os.chown(data_src_dst, uid, gid)
 
 
-# TODO: re-use
-def modprobe(module):
-    """Load a kernel module and configure for auto-load on reboot."""
-    log('Loading kernel module', level=INFO)
-    cmd = ['modprobe', module]
-    check_call(cmd)
-    with open('/etc/modules', 'r+') as modules:
-        if module not in modules.read():
-            modules.write(module)
-
-
 def copy_files(src, dst, symlinks=False, ignore=None):
     """Copy files from src to dst."""
     for item in os.listdir(src):

=== modified file 'hooks/charmhelpers/core/hookenv.py'
--- hooks/charmhelpers/core/hookenv.py	2015-09-03 09:44:48 +0000
+++ hooks/charmhelpers/core/hookenv.py	2015-10-08 15:47:11 +0000
@@ -623,6 +623,38 @@
     return unit_get('private-address')
 
 
+@cached
+def storage_get(attribute="", storage_id=""):
+    """Get storage attributes"""
+    _args = ['storage-get', '--format=json']
+    if storage_id:
+        _args.extend(('-s', storage_id))
+    if attribute:
+        _args.append(attribute)
+    try:
+        return json.loads(subprocess.check_output(_args).decode('UTF-8'))
+    except ValueError:
+        return None
+
+
+@cached
+def storage_list(storage_name=""):
+    """List the storage IDs for the unit"""
+    _args = ['storage-list', '--format=json']
+    if storage_name:
+        _args.append(storage_name)
+    try:
+        return json.loads(subprocess.check_output(_args).decode('UTF-8'))
+    except ValueError:
+        return None
+    except OSError as e:
+        import errno
+        if e.errno == errno.ENOENT:
+            # storage-list does not exist
+            return []
+        raise
+
+
 class UnregisteredHookError(Exception):
     """Raised when an undefined hook is called"""
     pass

=== modified file 'hooks/charmhelpers/core/host.py'
--- hooks/charmhelpers/core/host.py	2015-08-19 13:53:01 +0000
+++ hooks/charmhelpers/core/host.py	2015-10-08 15:47:11 +0000
@@ -63,32 +63,48 @@
     return service_result
 
 
-def service_pause(service_name, init_dir=None):
+def service_pause(service_name, init_dir="/etc/init", initd_dir="/etc/init.d"):
     """Pause a system service.
 
     Stop it, and prevent it from starting again at boot."""
-    if init_dir is None:
-        init_dir = "/etc/init"
     stopped = service_stop(service_name)
-    # XXX: Support systemd too
-    override_path = os.path.join(
-        init_dir, '{}.override'.format(service_name))
-    with open(override_path, 'w') as fh:
-        fh.write("manual\n")
+    upstart_file = os.path.join(init_dir, "{}.conf".format(service_name))
+    sysv_file = os.path.join(initd_dir, service_name)
+    if os.path.exists(upstart_file):
+        override_path = os.path.join(
+            init_dir, '{}.override'.format(service_name))
+        with open(override_path, 'w') as fh:
+            fh.write("manual\n")
+    elif os.path.exists(sysv_file):
+        subprocess.check_call(["update-rc.d", service_name, "disable"])
+    else:
+        # XXX: Support SystemD too
+        raise ValueError(
+            "Unable to detect {0} as either Upstart {1} or SysV {2}".format(
+                service_name, upstart_file, sysv_file))
     return stopped
 
 
-def service_resume(service_name, init_dir=None):
+def service_resume(service_name, init_dir="/etc/init",
+                   initd_dir="/etc/init.d"):
     """Resume a system service.
 
     Reenable starting again at boot. Start the service"""
-    # XXX: Support systemd too
-    if init_dir is None:
-        init_dir = "/etc/init"
-    override_path = os.path.join(
-        init_dir, '{}.override'.format(service_name))
-    if os.path.exists(override_path):
-        os.unlink(override_path)
+    upstart_file = os.path.join(init_dir, "{}.conf".format(service_name))
+    sysv_file = os.path.join(initd_dir, service_name)
+    if os.path.exists(upstart_file):
+        override_path = os.path.join(
+            init_dir, '{}.override'.format(service_name))
+        if os.path.exists(override_path):
+            os.unlink(override_path)
+    elif os.path.exists(sysv_file):
+        subprocess.check_call(["update-rc.d", service_name, "enable"])
+    else:
+        # XXX: Support SystemD too
+        raise ValueError(
+            "Unable to detect {0} as either Upstart {1} or SysV {2}".format(
+                service_name, upstart_file, sysv_file))
+
     started = service_start(service_name)
     return started
 

=== modified file 'hooks/charmhelpers/core/hugepage.py'
--- hooks/charmhelpers/core/hugepage.py	2015-08-19 13:53:01 +0000
+++ hooks/charmhelpers/core/hugepage.py	2015-10-08 15:47:11 +0000
@@ -25,11 +25,13 @@
     fstab_mount,
     mkdir,
 )
+from charmhelpers.core.strutils import bytes_from_string
+from subprocess import check_output
 
 
 def hugepage_support(user, group='hugetlb', nr_hugepages=256,
                      max_map_count=65536, mnt_point='/run/hugepages/kvm',
-                     pagesize='2MB', mount=True):
+                     pagesize='2MB', mount=True, set_shmmax=False):
     """Enable hugepages on system.
 
     Args:
@@ -49,6 +51,11 @@
         'vm.max_map_count': max_map_count,
         'vm.hugetlb_shm_group': gid,
     }
+    if set_shmmax:
+        shmmax_current = int(check_output(['sysctl', '-n', 'kernel.shmmax']))
+        shmmax_minsize = bytes_from_string(pagesize) * nr_hugepages
+        if shmmax_minsize > shmmax_current:
+            sysctl_settings['kernel.shmmax'] = shmmax_minsize
     sysctl.create(yaml.dump(sysctl_settings), '/etc/sysctl.d/10-hugepage.conf')
     mkdir(mnt_point, owner='root', group='root', perms=0o755, force=False)
     lfstab = fstab.Fstab()

=== added file 'hooks/charmhelpers/core/kernel.py'
--- hooks/charmhelpers/core/kernel.py	1970-01-01 00:00:00 +0000
+++ hooks/charmhelpers/core/kernel.py	2015-10-08 15:47:11 +0000
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright 2014-2015 Canonical Limited.
+#
+# This file is part of charm-helpers.
+#
+# charm-helpers is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License version 3 as
+# published by the Free Software Foundation.
+#
+# charm-helpers 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 Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with charm-helpers.  If not, see <http://www.gnu.org/licenses/>.
+
+__author__ = "Jorge Niedbalski <[e-mail]>"
+
+from charmhelpers.core.hookenv import (
+    log,
+    INFO
+)
+
+from subprocess import check_call, check_output
+import re
+
+
+def modprobe(module, persist=True):
+    """Load a kernel module and configure for auto-load on reboot."""
+    cmd = ['modprobe', module]
+
+    log('Loading kernel module %s' % module, level=INFO)
+
+    check_call(cmd)
+    if persist:
+        with open('/etc/modules', 'r+') as modules:
+            if module not in modules.read():
+                modules.write(module)
+
+
+def rmmod(module, force=False):
+    """Remove a module from the linux kernel"""
+    cmd = ['rmmod']
+    if force:
+        cmd.append('-f')
+    cmd.append(module)
+    log('Removing kernel module %s' % module, level=INFO)
+    return check_call(cmd)
+
+
+def lsmod():
+    """Shows what kernel modules are currently loaded"""
+    return check_output(['lsmod'],
+                        universal_newlines=True)
+
+
+def is_module_loaded(module):
+    """Checks if a kernel module is already loaded"""
+    matches = re.findall('^%s[ ]+' % module, lsmod(), re.M)
+    return len(matches) > 0
+
+
+def update_initramfs(version='all'):
+    """Updates an initramfs image"""
+    return check_call(["update-initramfs", "-k", version, "-u"])

=== modified file 'hooks/charmhelpers/core/strutils.py'
--- hooks/charmhelpers/core/strutils.py	2015-04-16 10:29:35 +0000
+++ hooks/charmhelpers/core/strutils.py	2015-10-08 15:47:11 +0000
@@ -18,6 +18,7 @@
 # along with charm-helpers.  If not, see <http://www.gnu.org/licenses/>.
 
 import six
+import re
 
 
 def bool_from_string(value):
@@ -40,3 +41,32 @@
 
     msg = "Unable to interpret string value '%s' as boolean" % (value)
     raise ValueError(msg)
+
+
+def bytes_from_string(value):
+    """Interpret human readable string value as bytes.
+
+    Returns int
+    """
+    BYTE_POWER = {
+        'K': 1,
+        'KB': 1,
+        'M': 2,
+        'MB': 2,
+        'G': 3,
+        'GB': 3,
+        'T': 4,
+        'TB': 4,
+        'P': 5,
+        'PB': 5,
+    }
+    if isinstance(value, six.string_types):
+        value = six.text_type(value)
+    else:
+        msg = "Unable to interpret non-string value '%s' as boolean" % (value)
+        raise ValueError(msg)
+    matches = re.match("([0-9]+)([a-zA-Z]+)", value)
+    if not matches:
+        msg = "Unable to interpret string value '%s' as bytes" % (value)
+        raise ValueError(msg)
+    return int(matches.group(1)) * (1024 ** BYTE_POWER[matches.group(2)])

=== modified file 'hooks/cinder_hooks.py'
--- hooks/cinder_hooks.py	2015-09-16 01:07:56 +0000
+++ hooks/cinder_hooks.py	2015-10-08 15:47:11 +0000
@@ -8,7 +8,9 @@
     register_configs,
     restart_map,
     set_ceph_env_variables,
-    PACKAGES
+    PACKAGES,
+    REQUIRED_INTERFACES,
+    check_optional_relations,
 )
 from cinder_contexts import CephSubordinateContext
 
@@ -19,6 +21,7 @@
     service_name,
     relation_set,
     relation_ids,
+    status_set,
     log,
 )
 from charmhelpers.fetch import apt_install, apt_update
@@ -34,6 +37,8 @@
     delete_keyring,
 )
 from charmhelpers.payload.execd import execd_preinstall
+from charmhelpers.contrib.openstack.utils import set_os_workload_status
+
 
 hooks = Hooks()
 
@@ -42,7 +47,9 @@
 
 @hooks.hook('install')
 def install():
+    status_set('maintenance', 'Executing pre-install')
     execd_preinstall()
+    status_set('maintenance', 'Installing apt packages')
     apt_update(fatal=True)
     apt_install(PACKAGES, fatal=True)
 
@@ -136,3 +143,5 @@
         hooks.execute(sys.argv)
     except UnregisteredHookError as e:
         log('Unknown hook {} - skipping.'.format(e))
+    set_os_workload_status(CONFIGS, REQUIRED_INTERFACES,
+                           charm_func=check_optional_relations)

=== modified file 'hooks/cinder_utils.py'
--- hooks/cinder_utils.py	2014-11-20 16:29:40 +0000
+++ hooks/cinder_utils.py	2015-10-08 15:47:11 +0000
@@ -4,6 +4,7 @@
 from charmhelpers.core.hookenv import (
     relation_ids,
     service_name,
+    status_get,
 )
 
 from charmhelpers.contrib.openstack import (
@@ -13,6 +14,7 @@
 
 from charmhelpers.contrib.openstack.utils import (
     get_os_codename_package,
+    set_os_workload_status,
 )
 
 from charmhelpers.contrib.openstack.alternatives import install_alternative
@@ -23,6 +25,10 @@
     'ceph-common',
 ]
 
+REQUIRED_INTERFACES = {
+    'ceph': ['ceph'],
+}
+
 CHARM_CEPH_CONF = '/var/lib/charm/{}/ceph.conf'
 CEPH_CONF = '/etc/ceph/ceph.conf'
 
@@ -104,3 +110,13 @@
             out.write('CEPH_ARGS="--id %s"\n' % service)
     with open('/etc/init/cinder-volume.override', 'w') as out:
             out.write('env CEPH_ARGS="--id %s"\n' % service)
+
+
+def check_optional_relations(configs):
+    # No optional relations at this time
+    required_interfaces = {}
+    if required_interfaces:
+        set_os_workload_status(configs, required_interfaces)
+        return status_get()
+    else:
+        return 'unknown', 'No optional relations'

=== modified file 'tests/charmhelpers/contrib/amulet/deployment.py'
--- tests/charmhelpers/contrib/amulet/deployment.py	2015-06-25 16:06:45 +0000
+++ tests/charmhelpers/contrib/amulet/deployment.py	2015-10-08 15:47:11 +0000
@@ -51,7 +51,8 @@
         if 'units' not in this_service:
             this_service['units'] = 1
 
-        self.d.add(this_service['name'], units=this_service['units'])
+        self.d.add(this_service['name'], units=this_service['units'],
+                   constraints=this_service.get('constraints'))
 
         for svc in other_services:
             if 'location' in svc:
@@ -64,7 +65,8 @@
             if 'units' not in svc:
                 svc['units'] = 1
 
-            self.d.add(svc['name'], charm=branch_location, units=svc['units'])
+            self.d.add(svc['name'], charm=branch_location, units=svc['units'],
+                       constraints=svc.get('constraints'))
 
     def _add_relations(self, relations):
         """Add all of the relations for the services."""

=== modified file 'tests/charmhelpers/contrib/amulet/utils.py'
--- tests/charmhelpers/contrib/amulet/utils.py	2015-09-10 09:30:40 +0000
+++ tests/charmhelpers/contrib/amulet/utils.py	2015-10-08 15:47:11 +0000
@@ -326,7 +326,7 @@
 
     def service_restarted_since(self, sentry_unit, mtime, service,
                                 pgrep_full=None, sleep_time=20,
-                                retry_count=2, retry_sleep_time=30):
+                                retry_count=30, retry_sleep_time=10):
         """Check if service was been started after a given time.
 
         Args:
@@ -334,8 +334,9 @@
           mtime (float): The epoch time to check against
           service (string): service name to look for in process table
           pgrep_full: [Deprecated] Use full command line search mode with pgrep
-          sleep_time (int): Seconds to sleep before looking for process
-          retry_count (int): If service is not found, how many times to retry
+          sleep_time (int): Initial sleep time (s) before looking for file
+          retry_sleep_time (int): Time (s) to sleep between retries
+          retry_count (int): If file is not found, how many times to retry
 
         Returns:
           bool: True if service found and its start time it newer than mtime,
@@ -359,11 +360,12 @@
                                                             pgrep_full)
                 self.log.debug('Attempt {} to get {} proc start time on {} '
                                'OK'.format(tries, service, unit_name))
-            except IOError:
+            except IOError as e:
                 # NOTE(beisner) - race avoidance, proc may not exist yet.
                 # https://bugs.launchpad.net/charm-helpers/+bug/1474030
                 self.log.debug('Attempt {} to get {} proc start time on {} '
-                               'failed'.format(tries, service, unit_name))
+                               'failed\n{}'.format(tries, service,
+                                                   unit_name, e))
                 time.sleep(retry_sleep_time)
                 tries += 1
 
@@ -383,35 +385,62 @@
             return False
 
     def config_updated_since(self, sentry_unit, filename, mtime,
-                             sleep_time=20):
+                             sleep_time=20, retry_count=30,
+                             retry_sleep_time=10):
         """Check if file was modified after a given time.
 
         Args:
           sentry_unit (sentry): The sentry unit to check the file mtime on
           filename (string): The file to check mtime of
           mtime (float): The epoch time to check against
-          sleep_time (int): Seconds to sleep before looking for process
+          sleep_time (int): Initial sleep time (s) before looking for file
+          retry_sleep_time (int): Time (s) to sleep between retries
+          retry_count (int): If file is not found, how many times to retry
 
         Returns:
           bool: True if file was modified more recently than mtime, False if
-                file was modified before mtime,
+                file was modified before mtime, or if file not found.
         """
-        self.log.debug('Checking %s updated since %s' % (filename, mtime))
+        unit_name = sentry_unit.info['unit_name']
+        self.log.debug('Checking that %s updated since %s on '
+                       '%s' % (filename, mtime, unit_name))
         time.sleep(sleep_time)
-        file_mtime = self._get_file_mtime(sentry_unit, filename)
+        file_mtime = None
+        tries = 0
+        while tries <= retry_count and not file_mtime:
+            try:
+                file_mtime = self._get_file_mtime(sentry_unit, filename)
+                self.log.debug('Attempt {} to get {} file mtime on {} '
+                               'OK'.format(tries, filename, unit_name))
+            except IOError as e:
+                # NOTE(beisner) - race avoidance, file may not exist yet.
+                # https://bugs.launchpad.net/charm-helpers/+bug/1474030
+                self.log.debug('Attempt {} to get {} file mtime on {} '
+                               'failed\n{}'.format(tries, filename,
+                                                   unit_name, e))
+                time.sleep(retry_sleep_time)
+                tries += 1
+
+        if not file_mtime:
+            self.log.warn('Could not determine file mtime, assuming '
+                          'file does not exist')
+            return False
+
         if file_mtime >= mtime:
             self.log.debug('File mtime is newer than provided mtime '
-                           '(%s >= %s)' % (file_mtime, mtime))
+                           '(%s >= %s) on %s (OK)' % (file_mtime,
+                                                      mtime, unit_name))
             return True
         else:
-            self.log.warn('File mtime %s is older than provided mtime %s'
-                          % (file_mtime, mtime))
+            self.log.warn('File mtime is older than provided mtime'
+                          '(%s < on %s) on %s' % (file_mtime,
+                                                  mtime, unit_name))
             return False
 
     def validate_service_config_changed(self, sentry_unit, mtime, service,
                                         filename, pgrep_full=None,
-                                        sleep_time=20, retry_count=2,
-                                        retry_sleep_time=30):
+                                        sleep_time=20, retry_count=30,
+                                        retry_sleep_time=10):
         """Check service and file were updated after mtime
 
         Args:
@@ -456,7 +485,9 @@
             sentry_unit,
             filename,
             mtime,
-            sleep_time=0)
+            sleep_time=sleep_time,
+            retry_count=retry_count,
+            retry_sleep_time=retry_sleep_time)
 
         return service_restart and config_update
 
@@ -776,3 +807,12 @@
         output = _check_output(command, universal_newlines=True)
         data = json.loads(output)
         return data.get(u"status") == "completed"
+
+    def status_get(self, unit):
+        """Return the current service status of this unit."""
+        raw_status, return_code = unit.run(
+            "status-get --format=json --include-data")
+        if return_code != 0:
+            return ("unknown", "")
+        status = json.loads(raw_status)
+        return (status["status"], status["message"])

=== modified file 'tests/charmhelpers/contrib/openstack/amulet/deployment.py'
--- tests/charmhelpers/contrib/openstack/amulet/deployment.py	2015-09-10 09:30:40 +0000
+++ tests/charmhelpers/contrib/openstack/amulet/deployment.py	2015-10-08 15:47:11 +0000
@@ -58,19 +58,17 @@
         else:
             base_series = self.current_next
 
-        if self.stable:
-            for svc in other_services:
-                if svc['name'] in force_series_current:
-                    base_series = self.current_next
-
+        for svc in other_services:
+            if svc['name'] in force_series_current:
+                base_series = self.current_next
+            # If a location has been explicitly set, use it
+            if svc.get('location'):
+                continue
+            if self.stable:
                 temp = 'lp:charms/{}/{}'
                 svc['location'] = temp.format(base_series,
                                               svc['name'])
-        else:
-            for svc in other_services:
-                if svc['name'] in force_series_current:
-                    base_series = self.current_next
-
+            else:
                 if svc['name'] in base_charms:
                     temp = 'lp:charms/{}/{}'
                     svc['location'] = temp.format(base_series,
@@ -79,6 +77,7 @@
                     temp = 'lp:~openstack-charmers/charms/{}/{}/next'
                     svc['location'] = temp.format(self.current_next,
                                                   svc['name'])
+
         return other_services
 
     def _add_services(self, this_service, other_services):

=== modified file 'tests/charmhelpers/contrib/openstack/amulet/utils.py'
--- tests/charmhelpers/contrib/openstack/amulet/utils.py	2015-09-10 09:30:40 +0000
+++ tests/charmhelpers/contrib/openstack/amulet/utils.py	2015-10-08 15:47:11 +0000
@@ -752,7 +752,7 @@
             self.log.debug('SSL is enabled  @{}:{} '
                            '({})'.format(host, port, unit_name))
             return True
-        elif not port and not conf_ssl:
+        elif not conf_ssl:
             self.log.debug('SSL not enabled @{}:{} '
                            '({})'.format(host, port, unit_name))
             return False

=== modified file 'unit_tests/test_cinder_hooks.py'
--- unit_tests/test_cinder_hooks.py	2015-09-16 01:07:56 +0000
+++ unit_tests/test_cinder_hooks.py	2015-10-08 15:47:11 +0000
@@ -34,7 +34,8 @@
     # charmhelpers.contrib.hahelpers.cluster_utils
     'execd_preinstall',
     'CephSubordinateContext',
-    'delete_keyring'
+    'delete_keyring',
+    'status_set'
 ]