-#!/usr/bin/python
+#
#
# Copyright (C) 2009, Google Inc.
from ganeti import constants
+
# constants for some common errors to return from a query
QUERY_UNKNOWN_ENTRY_ERROR = (constants.CONFD_REPL_STATUS_ERROR,
constants.CONFD_ERROR_UNKNOWN_ENTRY)
QUERY_INTERNAL_ERROR = (constants.CONFD_REPL_STATUS_ERROR,
constants.CONFD_ERROR_INTERNAL)
+
class ConfdQuery(object):
"""Confd Query base class.
class PingQuery(ConfdQuery):
"""An empty confd query.
- It will return success on an empty argument, and an error on any other argument.
+ It will return success on an empty argument, and an error on any other
+ argument.
"""
def Exec(self, query):
return status, answer
+class ClusterMasterQuery(ConfdQuery):
+ """Cluster master query.
+
+ It accepts no arguments, and returns the current cluster master.
+
+ """
+ def Exec(self, query):
+ """ClusterMasterQuery main execution
+
+ """
+ if query is None:
+ status = constants.CONFD_REPL_STATUS_OK
+ answer = self.reader.GetMasterNode()
+ else:
+ status = constants.CONFD_REPL_STATUS_ERROR
+ answer = 'master query accepts no query argument'
+
+ return status, answer
+
+
class NodeRoleQuery(ConfdQuery):
"""A query for the role of a node.
return constants.CONFD_REPL_STATUS_OK, pnode_primary_ip
+
+class NodesPipsQuery(ConfdQuery):
+ """A query for nodes primary IPs.
+
+ It returns the list of nodes primary IPs.
+
+ """
+ def Exec(self, query):
+ """NodesPipsQuery main execution.
+
+ """
+ if query is None:
+ status = constants.CONFD_REPL_STATUS_OK
+ answer = self.reader.GetNodesPrimaryIps()
+ else:
+ status = constants.CONFD_REPL_STATUS_ERROR
+ answer = "non-empty node primary IPs query"
+
+ return status, answer
+
+
+class MasterCandidatesPipsQuery(ConfdQuery):
+ """A query for master candidates primary IPs.
+
+ It returns the list of master candidates primary IPs.
+
+ """
+ def Exec(self, query):
+ """MasterCandidatesPipsQuery main execution.
+
+ """
+ if query is None:
+ status = constants.CONFD_REPL_STATUS_OK
+ answer = self.reader.GetMasterCandidatesPrimaryIps()
+ else:
+ status = constants.CONFD_REPL_STATUS_ERROR
+ answer = "non-empty master candidates primary IPs query"
+
+ return status, answer
+