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Viewing changes to nova/scheduler/manager.py

  • Committer: Tarmac
  • Author(s): Kei Masumoto, jaypipes at gmail
  • Date: 2011-03-14 18:11:30 UTC
  • mfrom: (439.1.55 live-migration)
  • Revision ID: tarmac-20110314181130-4d3yrklbdi8kilcm
NTT's live-migration branch, merged with trunk, conflicts resolved, and migrate file renamed.

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nova/scheduler/manager.py
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                 {"method": method,
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                  "args": kwargs})
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        LOG.debug(_("Casting to %(topic)s %(host)s for %(method)s") % locals())
 
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    # NOTE (masumotok) : This method should be moved to nova.api.ec2.admin.
 
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    #                    Based on bexar design summit discussion,
 
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    #                    just put this here for bexar release.
 
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    def show_host_resources(self, context, host, *args):
 
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        """Shows the physical/usage resource given by hosts.
 
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        :param context: security context
 
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        :param host: hostname
 
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        :returns:
 
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            example format is below.
 
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            {'resource':D, 'usage':{proj_id1:D, proj_id2:D}}
 
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            D: {'vcpus':3, 'memory_mb':2048, 'local_gb':2048}
 
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        """
 
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        compute_ref = db.service_get_all_compute_by_host(context, host)
 
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        compute_ref = compute_ref[0]
 
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        # Getting physical resource information
 
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        compute_node_ref = compute_ref['compute_node'][0]
 
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        resource = {'vcpus': compute_node_ref['vcpus'],
 
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                    'memory_mb': compute_node_ref['memory_mb'],
 
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                    'local_gb': compute_node_ref['local_gb'],
 
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                    'vcpus_used': compute_node_ref['vcpus_used'],
 
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                    'memory_mb_used': compute_node_ref['memory_mb_used'],
 
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                    'local_gb_used': compute_node_ref['local_gb_used']}
 
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        # Getting usage resource information
 
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        usage = {}
 
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        instance_refs = db.instance_get_all_by_host(context,
 
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                                                    compute_ref['host'])
 
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        if not instance_refs:
 
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            return {'resource': resource, 'usage': usage}
 
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        project_ids = [i['project_id'] for i in instance_refs]
 
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        project_ids = list(set(project_ids))
 
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        for project_id in project_ids:
 
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            vcpus = db.instance_get_vcpu_sum_by_host_and_project(context,
 
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                                                                 host,
 
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                                                                 project_id)
 
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            mem = db.instance_get_memory_sum_by_host_and_project(context,
 
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                                                                 host,
 
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                                                                 project_id)
 
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            hdd = db.instance_get_disk_sum_by_host_and_project(context,
 
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                                                               host,
 
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                                                               project_id)
 
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            usage[project_id] = {'vcpus': int(vcpus),
 
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                                 'memory_mb': int(mem),
 
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                                 'local_gb': int(hdd)}
 
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        return {'resource': resource, 'usage': usage}