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124 lines (99 loc) · 3.74 KB
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from __future__ import absolute_import, unicode_literals
__all__ = ['Cluster']
from arango.api import APIWrapper
from arango.exceptions import (
ClusterHealthError,
ClusterMaintenanceModeError,
ClusterServerIDError,
ClusterServerRoleError,
ClusterStatisticsError,
)
from arango.request import Request
class Cluster(APIWrapper): # pragma: no cover
def __init__(self, connection, executor):
super(Cluster, self).__init__(connection, executor)
def server_id(self):
"""Return the server ID.
:return: Server ID.
:rtype: str | unicode
:raise arango.exceptions.ClusterServerIDError: If retrieval fails.
"""
request = Request(
method='get',
endpoint='/_admin/server/id'
)
def response_handler(resp):
if resp.is_success:
return resp.body['id']
raise ClusterServerIDError(resp, request)
return self._execute(request, response_handler)
def server_role(self):
"""Return the server role.
:return: Server role. Possible values are "SINGLE" (server which is
not in a cluster), "COORDINATOR" (cluster coordinator), "PRIMARY",
"SECONDARY", "AGENT" (Agency node in a cluster) or "UNDEFINED".
:rtype: str | unicode
:raise arango.exceptions.ClusterServerRoleError: If retrieval fails.
"""
request = Request(
method='get',
endpoint='/_admin/server/role'
)
def response_handler(resp):
if resp.is_success:
return resp.body['role']
raise ClusterServerRoleError(resp, request)
return self._execute(request, response_handler)
def statistics(self, server_id):
"""Return the cluster statistics for the given server.
:param server_id: Server ID.
:type server_id: str | unicode
:return: Cluster statistics for the given server.
:rtype: dict
:raise arango.exceptions.ClusterStatisticsError: If retrieval fails.
"""
request = Request(
method='get',
endpoint='/_admin/clusterStatistics',
params={'DBserver': server_id}
)
def response_handler(resp):
if resp.is_success:
return resp.body
raise ClusterStatisticsError(resp, request)
return self._execute(request, response_handler)
def health(self):
"""Return the cluster health.
:return: Cluster health.
:rtype: dict
:raise arango.exceptions.ClusterHealthError: If retrieval fails.
"""
request = Request(
method='get',
endpoint='/_admin/cluster/health',
)
def response_handler(resp):
if resp.is_success:
resp.body.pop('error')
resp.body.pop('code')
return resp.body
raise ClusterHealthError(resp, request)
return self._execute(request, response_handler)
def toggle_maintenance_mode(self, mode):
"""Enable or disable the cluster supervision (agency) maintenance mode.
:param mode: Maintenance mode. Allowed values are "on" and "off".
:type mode: str | unicode
:return: Result of the operation.
:rtype: dict
:raise arango.exceptions.ClusterMaintenanceModeError: If toggle fails.
"""
request = Request(
method='put',
endpoint='/_admin/cluster/maintenance',
data='"{}"'.format(mode)
)
def response_handler(resp):
if resp.is_success:
return resp.body
raise ClusterMaintenanceModeError(resp, request)
return self._execute(request, response_handler)