示例#1
0
    def get_all_host_states(self, context):
        """Returns a dict of all the hosts the HostManager
          knows about. Also, each of the consumable resources in HostState
          are pre-populated and adjusted based on data in the db.

          For example:
          {'192.168.1.100': HostState(), ...}
        """

        # Get resource usage across the available volume nodes:
        topic = FLAGS.volume_topic
        volume_services = db.service_get_all_by_topic(context, topic)
        for service in volume_services:
            if not utils.service_is_up(service) or service['disabled']:
                LOG.warn(_("service is down or disabled."))
                continue
            host = service['host']
            capabilities = self.service_states.get(host, None)
            host_state = self.host_state_map.get(host)
            if host_state:
                # copy capabilities to host_state.capabilities
                host_state.update_capabilities(capabilities,
                                               dict(service.iteritems()))
            else:
                host_state = self.host_state_cls(host,
                                                 capabilities=capabilities,
                                                 service=dict(
                                                     service.iteritems()))
                self.host_state_map[host] = host_state
            # update host_state
            host_state.update_from_volume_capability(capabilities)

        return self.host_state_map.itervalues()
示例#2
0
    def get_all_host_states(self, context):
        """Returns a dict of all the hosts the HostManager
          knows about. Also, each of the consumable resources in HostState
          are pre-populated and adjusted based on data in the db.

          For example:
          {'192.168.1.100': HostState(), ...}
        """

        # Get resource usage across the available volume nodes:
        topic = FLAGS.volume_topic
        volume_services = db.service_get_all_by_topic(context, topic)
        for service in volume_services:
            if not utils.service_is_up(service) or service['disabled']:
                LOG.warn(_("service is down or disabled."))
                continue
            host = service['host']
            capabilities = self.service_states.get(host, None)
            host_state = self.host_state_map.get(host)
            if host_state:
                # copy capabilities to host_state.capabilities
                host_state.update_capabilities(capabilities,
                                               dict(service.iteritems()))
            else:
                host_state = self.host_state_cls(host,
                                                 capabilities=capabilities,
                                                 service=
                                                 dict(service.iteritems()))
                self.host_state_map[host] = host_state
            # update host_state
            host_state.update_from_volume_capability(capabilities)

        return self.host_state_map.itervalues()
示例#3
0
文件: driver.py 项目: v12aml/raksha
    def hosts_up(self, context, topic):
        """Return the list of hosts that have a running service for topic."""

        services = db.service_get_all_by_topic(context, topic)
        return [service['host']
                for service in services
                if utils.service_is_up(service)]