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Viewing changes to juju/control/remove_relation.py

  • Committer: kapil.thangavelu at canonical
  • Date: 2012-05-22 22:08:15 UTC
  • mfrom: (484.1.53 trunk)
  • Revision ID: kapil.thangavelu@canonical.com-20120522220815-acyt8m89i9ybe0w1
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juju/control/remove_relation.py
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from twisted.internet.defer import inlineCallbacks
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from juju.control.utils import get_environment
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from juju.state.errors import AmbiguousRelation, NoMatchingEndpoints
 
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from juju.state.errors import (AmbiguousRelation, NoMatchingEndpoints,
 
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                               UnsupportedSubordinateServiceRemoval)
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from juju.state.relation import RelationStateManager
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from juju.state.service import ServiceStateManager
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        endpoints = endpoints[0:1]
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    relation_state = yield relation_state_manager.get_relation_state(
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        *endpoints)
 
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    # Look at both endpoints, if we are dealing with a container relation
 
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    # decide if one end is a principal.
 
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    service_pair = []  # ordered such that sub, principal
 
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    is_container = False
 
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    has_principal = True
 
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    for ep in endpoints:
 
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        if ep.relation_scope == "container":
 
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            is_container = True
 
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        service = yield service_state_manager.get_service_state(
 
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            ep.service_name)
 
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        if (yield service.is_subordinate()):
 
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            service_pair.append(service)
 
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            has_principal = True
 
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        else:
 
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            service_pair.insert(0, service)
 
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    if is_container and len(service_pair) == 2 and has_principal:
 
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        sub, principal = service_pair
 
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        raise UnsupportedSubordinateServiceRemoval(sub.service_name,
 
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                                                   principal.service_name)
 
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    yield relation_state_manager.remove_relation_state(relation_state)
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    yield client.close()
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