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from teuthology import misc
def get_remote(ctx, cluster, service_type, service_id):
"""
Get the Remote for the host where a particular role runs.
:param cluster: name of the cluster the service is part of
:param service_type: e.g. 'mds', 'osd', 'client'
:param service_id: The third part of a role, e.g. '0' for
the role 'ceph.client.0'
:return: a Remote instance for the host where the
requested role is placed
"""
def _is_instance(role):
role_tuple = misc.split_role(role)
return role_tuple == (cluster, service_type, str(service_id))
try:
(remote,) = ctx.cluster.only(_is_instance).remotes.keys()
except ValueError:
raise KeyError("Service {0}.{1}.{2} not found".format(cluster,
service_type,
service_id))
return remote
def get_remote_for_role(ctx, role):
return get_remote(ctx, *misc.split_role(role))
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