# 02110-1301, USA.
-"""Script to show add a new node to the cluster
+"""Inter-node RPC library.
"""
# R0904: Too many public methods
import os
-import socket
-import httplib
+import logging
+import zlib
+import base64
-import simplejson
-
-from ganeti import logger
from ganeti import utils
from ganeti import objects
+from ganeti import http
+from ganeti import serializer
+from ganeti import constants
+from ganeti import errors
+
+# pylint has a bug here, doesn't see this import
+import ganeti.http.client # pylint: disable-msg=W0611
+
+
+# Module level variable
+_http_manager = None
+
+
+def Init():
+ """Initializes the module-global HTTP client manager.
+
+ Must be called before using any RPC function.
+
+ """
+ global _http_manager # pylint: disable-msg=W0603
+
+ assert not _http_manager, "RPC module initialized more than once"
+
+ http.InitSsl()
+
+ _http_manager = http.client.HttpClientManager()
+
+
+def Shutdown():
+ """Stops the module-global HTTP client manager.
+
+ Must be called before quitting the program.
+
+ """
+ global _http_manager # pylint: disable-msg=W0603
+ if _http_manager:
+ _http_manager.Shutdown()
+ _http_manager = None
-class NodeController:
- """Node-handling class.
- For each node that we speak with, we create an instance of this
- class, so that we have a safe place to store the details of this
- individual call.
+class RpcResult(object):
+ """RPC Result class.
+
+ This class holds an RPC result. It is needed since in multi-node
+ calls we can't raise an exception just because one one out of many
+ failed, and therefore we use this class to encapsulate the result.
+
+ @ivar data: the data payload, for successful results, or None
+ @ivar call: the name of the RPC call
+ @ivar node: the name of the node to which we made the call
+ @ivar offline: whether the operation failed because the node was
+ offline, as opposed to actual failure; offline=True will always
+ imply failed=True, in order to allow simpler checking if
+ the user doesn't care about the exact failure mode
+ @ivar fail_msg: the error message if the call failed
"""
- def __init__(self, parent, node):
- self.parent = parent
+ def __init__(self, data=None, failed=False, offline=False,
+ call=None, node=None):
+ self.offline = offline
+ self.call = call
self.node = node
- self.failed = False
-
- self.http_conn = hc = httplib.HTTPConnection(node, self.parent.port)
- try:
- hc.connect()
- hc.putrequest('PUT', "/%s" % self.parent.procedure,
- skip_accept_encoding=True)
- hc.putheader('Content-Length', str(len(parent.body)))
- hc.endheaders()
- hc.send(parent.body)
- except socket.error, err:
- logger.Error("Error connecting to %s: %s" % (node, str(err)))
- self.failed = True
-
- def get_response(self):
- """Try to process the response from the node.
-
- """
- if self.failed:
- # we already failed in connect
- return False
- resp = self.http_conn.getresponse()
- if resp.status != 200:
- return False
- try:
- length = int(resp.getheader('Content-Length', '0'))
- except ValueError:
- return False
- if not length:
- logger.Error("Zero-length reply from %s" % self.node)
- return False
- payload = resp.read(length)
- unload = simplejson.loads(payload)
- return unload
+
+ if offline:
+ self.fail_msg = "Node is marked offline"
+ self.data = self.payload = None
+ elif failed:
+ self.fail_msg = self._EnsureErr(data)
+ self.data = self.payload = None
+ else:
+ self.data = data
+ if not isinstance(self.data, (tuple, list)):
+ self.fail_msg = ("RPC layer error: invalid result type (%s)" %
+ type(self.data))
+ self.payload = None
+ elif len(data) != 2:
+ self.fail_msg = ("RPC layer error: invalid result length (%d), "
+ "expected 2" % len(self.data))
+ self.payload = None
+ elif not self.data[0]:
+ self.fail_msg = self._EnsureErr(self.data[1])
+ self.payload = None
+ else:
+ # finally success
+ self.fail_msg = None
+ self.payload = data[1]
+
+ assert hasattr(self, "call")
+ assert hasattr(self, "data")
+ assert hasattr(self, "fail_msg")
+ assert hasattr(self, "node")
+ assert hasattr(self, "offline")
+ assert hasattr(self, "payload")
+
+ @staticmethod
+ def _EnsureErr(val):
+ """Helper to ensure we return a 'True' value for error."""
+ if val:
+ return val
+ else:
+ return "No error information"
+
+ def Raise(self, msg, prereq=False, ecode=None):
+ """If the result has failed, raise an OpExecError.
+
+ This is used so that LU code doesn't have to check for each
+ result, but instead can call this function.
+
+ """
+ if not self.fail_msg:
+ return
+
+ if not msg: # one could pass None for default message
+ msg = ("Call '%s' to node '%s' has failed: %s" %
+ (self.call, self.node, self.fail_msg))
+ else:
+ msg = "%s: %s" % (msg, self.fail_msg)
+ if prereq:
+ ec = errors.OpPrereqError
+ else:
+ ec = errors.OpExecError
+ if ecode is not None:
+ args = (msg, prereq)
+ else:
+ args = (msg, )
+ raise ec(*args) # pylint: disable-msg=W0142
class Client:
list of nodes, will contact (in parallel) all nodes, and return a
dict of results (key: node name, value: result).
- One current bug is that generic failure is still signalled by
+ One current bug is that generic failure is still signaled by
'False' result, which is not good. This overloading of values can
cause bugs.
"""
- result_set = False
- result = False
- allresult = []
-
- def __init__(self, procedure, args):
- self.port = utils.GetNodeDaemonPort()
- self.nodepw = utils.GetNodeDaemonPassword()
- self.nc = {}
- self.results = {}
+ def __init__(self, procedure, body, port):
self.procedure = procedure
- self.args = args
- self.body = simplejson.dumps(args)
+ self.body = body
+ self.port = port
+ self.nc = {}
- #--- generic connector -------------
+ self._ssl_params = \
+ http.HttpSslParams(ssl_key_path=constants.NODED_CERT_FILE,
+ ssl_cert_path=constants.NODED_CERT_FILE)
- def connect_list(self, node_list):
+ def ConnectList(self, node_list, address_list=None):
"""Add a list of nodes to the target nodes.
+ @type node_list: list
+ @param node_list: the list of node names to connect
+ @type address_list: list or None
+ @keyword address_list: either None or a list with node addresses,
+ which must have the same length as the node list
+
"""
- for node in node_list:
- self.connect(node)
+ if address_list is None:
+ address_list = [None for _ in node_list]
+ else:
+ assert len(node_list) == len(address_list), \
+ "Name and address lists should have the same length"
+ for node, address in zip(node_list, address_list):
+ self.ConnectNode(node, address)
- def connect(self, connect_node):
+ def ConnectNode(self, name, address=None):
"""Add a node to the target list.
+ @type name: str
+ @param name: the node name
+ @type address: str
+ @keyword address: the node address, if known
+
"""
- self.nc[connect_node] = nc = NodeController(self, connect_node)
+ if address is None:
+ address = name
+
+ self.nc[name] = \
+ http.client.HttpClientRequest(address, self.port, http.HTTP_PUT,
+ "/%s" % self.procedure,
+ post_data=self.body,
+ ssl_params=self._ssl_params,
+ ssl_verify_peer=True)
- def getresult(self):
- """Return the results of the call.
+ def GetResults(self):
+ """Call nodes and return results.
+
+ @rtype: list
+ @return: List of RPC results
"""
- return self.results
+ assert _http_manager, "RPC module not initialized"
- def run(self):
- """Wrapper over reactor.run().
+ _http_manager.ExecRequests(self.nc.values())
- This function simply calls reactor.run() if we have any requests
- queued, otherwise it does nothing.
+ results = {}
- """
- for node, nc in self.nc.items():
- self.results[node] = nc.get_response()
+ for name, req in self.nc.iteritems():
+ if req.success and req.resp_status_code == http.HTTP_OK:
+ results[name] = RpcResult(data=serializer.LoadJson(req.resp_body),
+ node=name, call=self.procedure)
+ continue
+
+ # TODO: Better error reporting
+ if req.error:
+ msg = req.error
+ else:
+ msg = req.resp_body
+
+ logging.error("RPC error in %s from node %s: %s",
+ self.procedure, name, msg)
+ results[name] = RpcResult(data=msg, failed=True, node=name,
+ call=self.procedure)
+
+ return results
+
+
+def _EncodeImportExportIO(ieio, ieioargs):
+ """Encodes import/export I/O information.
+
+ """
+ if ieio == constants.IEIO_RAW_DISK:
+ assert len(ieioargs) == 1
+ return (ieioargs[0].ToDict(), )
+
+ if ieio == constants.IEIO_SCRIPT:
+ assert len(ieioargs) == 2
+ return (ieioargs[0].ToDict(), ieioargs[1])
+
+ return ieioargs
class RpcRunner(object):
"""
self._cfg = cfg
+ self.port = utils.GetDaemonPort(constants.NODED)
+
+ def _InstDict(self, instance, hvp=None, bep=None):
+ """Convert the given instance to a dict.
+
+ This is done via the instance's ToDict() method and additionally
+ we fill the hvparams with the cluster defaults.
+
+ @type instance: L{objects.Instance}
+ @param instance: an Instance object
+ @type hvp: dict or None
+ @param hvp: a dictionary with overridden hypervisor parameters
+ @type bep: dict or None
+ @param bep: a dictionary with overridden backend parameters
+ @rtype: dict
+ @return: the instance dict, with the hvparams filled with the
+ cluster defaults
+
+ """
+ idict = instance.ToDict()
+ cluster = self._cfg.GetClusterInfo()
+ idict["hvparams"] = cluster.FillHV(instance)
+ if hvp is not None:
+ idict["hvparams"].update(hvp)
+ idict["beparams"] = cluster.FillBE(instance)
+ if bep is not None:
+ idict["beparams"].update(bep)
+ for nic in idict["nics"]:
+ nic['nicparams'] = objects.FillDict(
+ cluster.nicparams[constants.PP_DEFAULT],
+ nic['nicparams'])
+ return idict
+
+ def _ConnectList(self, client, node_list, call):
+ """Helper for computing node addresses.
+
+ @type client: L{ganeti.rpc.Client}
+ @param client: a C{Client} instance
+ @type node_list: list
+ @param node_list: the node list we should connect
+ @type call: string
+ @param call: the name of the remote procedure call, for filling in
+ correctly any eventual offline nodes' results
+
+ """
+ all_nodes = self._cfg.GetAllNodesInfo()
+ name_list = []
+ addr_list = []
+ skip_dict = {}
+ for node in node_list:
+ if node in all_nodes:
+ if all_nodes[node].offline:
+ skip_dict[node] = RpcResult(node=node, offline=True, call=call)
+ continue
+ val = all_nodes[node].primary_ip
+ else:
+ val = None
+ addr_list.append(val)
+ name_list.append(node)
+ if name_list:
+ client.ConnectList(name_list, address_list=addr_list)
+ return skip_dict
+
+ def _ConnectNode(self, client, node, call):
+ """Helper for computing one node's address.
+
+ @type client: L{ganeti.rpc.Client}
+ @param client: a C{Client} instance
+ @type node: str
+ @param node: the node we should connect
+ @type call: string
+ @param call: the name of the remote procedure call, for filling in
+ correctly any eventual offline nodes' results
+
+ """
+ node_info = self._cfg.GetNodeInfo(node)
+ if node_info is not None:
+ if node_info.offline:
+ return RpcResult(node=node, offline=True, call=call)
+ addr = node_info.primary_ip
+ else:
+ addr = None
+ client.ConnectNode(node, address=addr)
+
+ def _MultiNodeCall(self, node_list, procedure, args):
+ """Helper for making a multi-node call
+
+ """
+ body = serializer.DumpJson(args, indent=False)
+ c = Client(procedure, body, self.port)
+ skip_dict = self._ConnectList(c, node_list, procedure)
+ skip_dict.update(c.GetResults())
+ return skip_dict
+
+ @classmethod
+ def _StaticMultiNodeCall(cls, node_list, procedure, args,
+ address_list=None):
+ """Helper for making a multi-node static call
+
+ """
+ body = serializer.DumpJson(args, indent=False)
+ c = Client(procedure, body, utils.GetDaemonPort(constants.NODED))
+ c.ConnectList(node_list, address_list=address_list)
+ return c.GetResults()
+
+ def _SingleNodeCall(self, node, procedure, args):
+ """Helper for making a single-node call
+
+ """
+ body = serializer.DumpJson(args, indent=False)
+ c = Client(procedure, body, self.port)
+ result = self._ConnectNode(c, node, procedure)
+ if result is None:
+ # we did connect, node is not offline
+ result = c.GetResults()[node]
+ return result
+
+ @classmethod
+ def _StaticSingleNodeCall(cls, node, procedure, args):
+ """Helper for making a single-node static call
+
+ """
+ body = serializer.DumpJson(args, indent=False)
+ c = Client(procedure, body, utils.GetDaemonPort(constants.NODED))
+ c.ConnectNode(node)
+ return c.GetResults()[node]
+
+ @staticmethod
+ def _Compress(data):
+ """Compresses a string for transport over RPC.
+
+ Small amounts of data are not compressed.
- def call_volume_list(self, node_list, vg_name):
+ @type data: str
+ @param data: Data
+ @rtype: tuple
+ @return: Encoded data to send
+
+ """
+ # Small amounts of data are not compressed
+ if len(data) < 512:
+ return (constants.RPC_ENCODING_NONE, data)
+
+ # Compress with zlib and encode in base64
+ return (constants.RPC_ENCODING_ZLIB_BASE64,
+ base64.b64encode(zlib.compress(data, 3)))
+
+ #
+ # Begin RPC calls
+ #
+
+ def call_lv_list(self, node_list, vg_name):
"""Gets the logical volumes present in a given volume group.
This is a multi-node call.
"""
- c = Client("volume_list", [vg_name])
- c.connect_list(node_list)
- c.run()
- return c.getresult()
+ return self._MultiNodeCall(node_list, "lv_list", [vg_name])
def call_vg_list(self, node_list):
"""Gets the volume group list.
This is a multi-node call.
"""
- c = Client("vg_list", [])
- c.connect_list(node_list)
- c.run()
- return c.getresult()
+ return self._MultiNodeCall(node_list, "vg_list", [])
+
+ def call_storage_list(self, node_list, su_name, su_args, name, fields):
+ """Get list of storage units.
+
+ This is a multi-node call.
+
+ """
+ return self._MultiNodeCall(node_list, "storage_list",
+ [su_name, su_args, name, fields])
+
+ def call_storage_modify(self, node, su_name, su_args, name, changes):
+ """Modify a storage unit.
+
+ This is a single-node call.
+
+ """
+ return self._SingleNodeCall(node, "storage_modify",
+ [su_name, su_args, name, changes])
+
+ def call_storage_execute(self, node, su_name, su_args, name, op):
+ """Executes an operation on a storage unit.
+
+ This is a single-node call.
+
+ """
+ return self._SingleNodeCall(node, "storage_execute",
+ [su_name, su_args, name, op])
def call_bridges_exist(self, node, bridges_list):
"""Checks if a node has all the bridges given.
This is a single-node call.
"""
- c = Client("bridges_exist", [bridges_list])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "bridges_exist", [bridges_list])
- def call_instance_start(self, node, instance, extra_args):
+ def call_instance_start(self, node, instance, hvp, bep):
"""Starts an instance.
This is a single-node call.
"""
- c = Client("instance_start", [instance.ToDict(), extra_args])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ idict = self._InstDict(instance, hvp=hvp, bep=bep)
+ return self._SingleNodeCall(node, "instance_start", [idict])
- def call_instance_shutdown(self, node, instance):
+ def call_instance_shutdown(self, node, instance, timeout):
"""Stops an instance.
This is a single-node call.
"""
- c = Client("instance_shutdown", [instance.ToDict()])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "instance_shutdown",
+ [self._InstDict(instance), timeout])
+
+ def call_migration_info(self, node, instance):
+ """Gather the information necessary to prepare an instance migration.
+
+ This is a single-node call.
+
+ @type node: string
+ @param node: the node on which the instance is currently running
+ @type instance: C{objects.Instance}
+ @param instance: the instance definition
+
+ """
+ return self._SingleNodeCall(node, "migration_info",
+ [self._InstDict(instance)])
+
+ def call_accept_instance(self, node, instance, info, target):
+ """Prepare a node to accept an instance.
+
+ This is a single-node call.
+
+ @type node: string
+ @param node: the target node for the migration
+ @type instance: C{objects.Instance}
+ @param instance: the instance definition
+ @type info: opaque/hypervisor specific (string/data)
+ @param info: result for the call_migration_info call
+ @type target: string
+ @param target: target hostname (usually ip address) (on the node itself)
+
+ """
+ return self._SingleNodeCall(node, "accept_instance",
+ [self._InstDict(instance), info, target])
+
+ def call_finalize_migration(self, node, instance, info, success):
+ """Finalize any target-node migration specific operation.
+
+ This is called both in case of a successful migration and in case of error
+ (in which case it should abort the migration).
+
+ This is a single-node call.
+
+ @type node: string
+ @param node: the target node for the migration
+ @type instance: C{objects.Instance}
+ @param instance: the instance definition
+ @type info: opaque/hypervisor specific (string/data)
+ @param info: result for the call_migration_info call
+ @type success: boolean
+ @param success: whether the migration was a success or a failure
+
+ """
+ return self._SingleNodeCall(node, "finalize_migration",
+ [self._InstDict(instance), info, success])
def call_instance_migrate(self, node, instance, target, live):
"""Migrate an instance.
interpretation of this parameter is left to the hypervisor)
"""
- c = Client("instance_migrate", [instance.ToDict(), target, live])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "instance_migrate",
+ [self._InstDict(instance), target, live])
- def call_instance_reboot(self, node, instance, reboot_type, extra_args):
+ def call_instance_reboot(self, node, inst, reboot_type, shutdown_timeout):
"""Reboots an instance.
This is a single-node call.
"""
- c = Client("instance_reboot", [instance.ToDict(), reboot_type, extra_args])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "instance_reboot",
+ [self._InstDict(inst), reboot_type,
+ shutdown_timeout])
- def call_instance_os_add(self, node, inst, osdev, swapdev):
+ def call_instance_os_add(self, node, inst, reinstall, debug):
"""Installs an OS on the given instance.
This is a single-node call.
"""
- params = [inst.ToDict(), osdev, swapdev]
- c = Client("instance_os_add", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "instance_os_add",
+ [self._InstDict(inst), reinstall, debug])
- def call_instance_run_rename(self, node, inst, old_name, osdev, swapdev):
+ def call_instance_run_rename(self, node, inst, old_name, debug):
"""Run the OS rename script for an instance.
This is a single-node call.
"""
- params = [inst.ToDict(), old_name, osdev, swapdev]
- c = Client("instance_run_rename", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "instance_run_rename",
+ [self._InstDict(inst), old_name, debug])
def call_instance_info(self, node, instance, hname):
"""Returns information about a single instance.
This is a single-node call.
- @type node_list: list
- @param node_list: the list of nodes to query
+ @type node: list
+ @param node: the list of nodes to query
@type instance: string
@param instance: the instance name
@type hname: string
@param hname: the hypervisor type of the instance
"""
- c = Client("instance_info", [instance, hname])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "instance_info", [instance, hname])
+
+ def call_instance_migratable(self, node, instance):
+ """Checks whether the given instance can be migrated.
+
+ This is a single-node call.
+
+ @param node: the node to query
+ @type instance: L{objects.Instance}
+ @param instance: the instance to check
+
+
+ """
+ return self._SingleNodeCall(node, "instance_migratable",
+ [self._InstDict(instance)])
def call_all_instances_info(self, node_list, hypervisor_list):
"""Returns information about all instances on the given nodes.
@param hypervisor_list: the hypervisors to query for instances
"""
- c = Client("all_instances_info", [hypervisor_list])
- c.connect_list(node_list)
- c.run()
- return c.getresult()
+ return self._MultiNodeCall(node_list, "all_instances_info",
+ [hypervisor_list])
def call_instance_list(self, node_list, hypervisor_list):
"""Returns the list of running instances on a given node.
@param hypervisor_list: the hypervisors to query for instances
"""
- c = Client("instance_list", [hypervisor_list])
- c.connect_list(node_list)
- c.run()
- return c.getresult()
+ return self._MultiNodeCall(node_list, "instance_list", [hypervisor_list])
def call_node_tcp_ping(self, node, source, target, port, timeout,
live_port_needed):
This is a single-node call.
"""
- c = Client("node_tcp_ping", [source, target, port, timeout,
+ return self._SingleNodeCall(node, "node_tcp_ping",
+ [source, target, port, timeout,
live_port_needed])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
def call_node_has_ip_address(self, node, address):
"""Checks if a node has the given IP address.
This is a single-node call.
"""
- c = Client("node_has_ip_address", [address])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "node_has_ip_address", [address])
def call_node_info(self, node_list, vg_name, hypervisor_type):
"""Return node information.
@type node_list: list
@param node_list: the list of nodes to query
- @type vgname: C{string}
- @param vgname: the name of the volume group to ask for disk space
+ @type vg_name: C{string}
+ @param vg_name: the name of the volume group to ask for disk space
information
@type hypervisor_type: C{str}
@param hypervisor_type: the name of the hypervisor to ask for
memory information
"""
- c = Client("node_info", [vg_name, hypervisor_type])
- c.connect_list(node_list)
- c.run()
- retux = c.getresult()
-
- for node_name in retux:
- ret = retux.get(node_name, False)
- if type(ret) != dict:
- logger.Error("could not connect to node %s" % (node_name))
- ret = {}
-
- utils.CheckDict(ret,
- { 'memory_total' : '-',
- 'memory_dom0' : '-',
- 'memory_free' : '-',
- 'vg_size' : 'node_unreachable',
- 'vg_free' : '-' },
- "call_node_info",
- )
- return retux
+ return self._MultiNodeCall(node_list, "node_info",
+ [vg_name, hypervisor_type])
def call_node_add(self, node, dsa, dsapub, rsa, rsapub, ssh, sshpub):
"""Add a node to the cluster.
This is a single-node call.
"""
- params = [dsa, dsapub, rsa, rsapub, ssh, sshpub]
- c = Client("node_add", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "node_add",
+ [dsa, dsapub, rsa, rsapub, ssh, sshpub])
def call_node_verify(self, node_list, checkdict, cluster_name):
"""Request verification of given parameters.
This is a multi-node call.
"""
- c = Client("node_verify", [checkdict, cluster_name])
- c.connect_list(node_list)
- c.run()
- return c.getresult()
+ return self._MultiNodeCall(node_list, "node_verify",
+ [checkdict, cluster_name])
- @staticmethod
- def call_node_start_master(node, start_daemons):
+ @classmethod
+ def call_node_start_master(cls, node, start_daemons, no_voting):
"""Tells a node to activate itself as a master.
This is a single-node call.
"""
- c = Client("node_start_master", [start_daemons])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return cls._StaticSingleNodeCall(node, "node_start_master",
+ [start_daemons, no_voting])
- @staticmethod
- def call_node_stop_master(node, stop_daemons):
+ @classmethod
+ def call_node_stop_master(cls, node, stop_daemons):
"""Tells a node to demote itself from master status.
This is a single-node call.
"""
- c = Client("node_stop_master", [stop_daemons])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return cls._StaticSingleNodeCall(node, "node_stop_master", [stop_daemons])
- @staticmethod
- def call_master_info(node_list):
+ @classmethod
+ def call_master_info(cls, node_list):
"""Query master info.
This is a multi-node call.
"""
# TODO: should this method query down nodes?
- c = Client("master_info", [])
- c.connect_list(node_list)
- c.run()
- return c.getresult()
+ return cls._StaticMultiNodeCall(node_list, "master_info", [])
- def call_version(self, node_list):
+ @classmethod
+ def call_version(cls, node_list):
"""Query node version.
This is a multi-node call.
"""
- c = Client("version", [])
- c.connect_list(node_list)
- c.run()
- return c.getresult()
+ return cls._StaticMultiNodeCall(node_list, "version", [])
def call_blockdev_create(self, node, bdev, size, owner, on_primary, info):
"""Request creation of a given block device.
This is a single-node call.
"""
- params = [bdev.ToDict(), size, owner, on_primary, info]
- c = Client("blockdev_create", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_create",
+ [bdev.ToDict(), size, owner, on_primary, info])
def call_blockdev_remove(self, node, bdev):
"""Request removal of a given block device.
This is a single-node call.
"""
- c = Client("blockdev_remove", [bdev.ToDict()])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_remove", [bdev.ToDict()])
def call_blockdev_rename(self, node, devlist):
"""Request rename of the given block devices.
This is a single-node call.
"""
- params = [(d.ToDict(), uid) for d, uid in devlist]
- c = Client("blockdev_rename", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_rename",
+ [(d.ToDict(), uid) for d, uid in devlist])
def call_blockdev_assemble(self, node, disk, owner, on_primary):
"""Request assembling of a given block device.
This is a single-node call.
"""
- params = [disk.ToDict(), owner, on_primary]
- c = Client("blockdev_assemble", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_assemble",
+ [disk.ToDict(), owner, on_primary])
def call_blockdev_shutdown(self, node, disk):
"""Request shutdown of a given block device.
This is a single-node call.
"""
- c = Client("blockdev_shutdown", [disk.ToDict()])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_shutdown", [disk.ToDict()])
def call_blockdev_addchildren(self, node, bdev, ndevs):
"""Request adding a list of children to a (mirroring) device.
This is a single-node call.
"""
- params = [bdev.ToDict(), [disk.ToDict() for disk in ndevs]]
- c = Client("blockdev_addchildren", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_addchildren",
+ [bdev.ToDict(),
+ [disk.ToDict() for disk in ndevs]])
def call_blockdev_removechildren(self, node, bdev, ndevs):
"""Request removing a list of children from a (mirroring) device.
This is a single-node call.
"""
- params = [bdev.ToDict(), [disk.ToDict() for disk in ndevs]]
- c = Client("blockdev_removechildren", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_removechildren",
+ [bdev.ToDict(),
+ [disk.ToDict() for disk in ndevs]])
def call_blockdev_getmirrorstatus(self, node, disks):
"""Request status of a (mirroring) device.
This is a single-node call.
"""
- params = [dsk.ToDict() for dsk in disks]
- c = Client("blockdev_getmirrorstatus", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ result = self._SingleNodeCall(node, "blockdev_getmirrorstatus",
+ [dsk.ToDict() for dsk in disks])
+ if not result.fail_msg:
+ result.payload = [objects.BlockDevStatus.FromDict(i)
+ for i in result.payload]
+ return result
def call_blockdev_find(self, node, disk):
"""Request identification of a given block device.
This is a single-node call.
"""
- c = Client("blockdev_find", [disk.ToDict()])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ result = self._SingleNodeCall(node, "blockdev_find", [disk.ToDict()])
+ if not result.fail_msg and result.payload is not None:
+ result.payload = objects.BlockDevStatus.FromDict(result.payload)
+ return result
- def call_blockdev_close(self, node, disks):
+ def call_blockdev_close(self, node, instance_name, disks):
"""Closes the given block devices.
This is a single-node call.
"""
- params = [cf.ToDict() for cf in disks]
- c = Client("blockdev_close", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ params = [instance_name, [cf.ToDict() for cf in disks]]
+ return self._SingleNodeCall(node, "blockdev_close", params)
- @staticmethod
- def call_upload_file(node_list, file_name):
+ def call_blockdev_getsizes(self, node, disks):
+ """Returns the size of the given disks.
+
+ This is a single-node call.
+
+ """
+ params = [[cf.ToDict() for cf in disks]]
+ return self._SingleNodeCall(node, "blockdev_getsize", params)
+
+ def call_drbd_disconnect_net(self, node_list, nodes_ip, disks):
+ """Disconnects the network of the given drbd devices.
+
+ This is a multi-node call.
+
+ """
+ return self._MultiNodeCall(node_list, "drbd_disconnect_net",
+ [nodes_ip, [cf.ToDict() for cf in disks]])
+
+ def call_drbd_attach_net(self, node_list, nodes_ip,
+ disks, instance_name, multimaster):
+ """Disconnects the given drbd devices.
+
+ This is a multi-node call.
+
+ """
+ return self._MultiNodeCall(node_list, "drbd_attach_net",
+ [nodes_ip, [cf.ToDict() for cf in disks],
+ instance_name, multimaster])
+
+ def call_drbd_wait_sync(self, node_list, nodes_ip, disks):
+ """Waits for the synchronization of drbd devices is complete.
+
+ This is a multi-node call.
+
+ """
+ return self._MultiNodeCall(node_list, "drbd_wait_sync",
+ [nodes_ip, [cf.ToDict() for cf in disks]])
+
+ @classmethod
+ def call_upload_file(cls, node_list, file_name, address_list=None):
"""Upload a file.
The node will refuse the operation in case the file is not on the
This is a multi-node call.
+ @type node_list: list
+ @param node_list: the list of node names to upload to
+ @type file_name: str
+ @param file_name: the filename to upload
+ @type address_list: list or None
+ @keyword address_list: an optional list of node addresses, in order
+ to optimize the RPC speed
+
"""
- fh = file(file_name)
- try:
- data = fh.read()
- finally:
- fh.close()
+ file_contents = utils.ReadFile(file_name)
+ data = cls._Compress(file_contents)
st = os.stat(file_name)
params = [file_name, data, st.st_mode, st.st_uid, st.st_gid,
st.st_atime, st.st_mtime]
- c = Client("upload_file", params)
- c.connect_list(node_list)
- c.run()
- return c.getresult()
+ return cls._StaticMultiNodeCall(node_list, "upload_file", params,
+ address_list=address_list)
+
+ @classmethod
+ def call_write_ssconf_files(cls, node_list, values):
+ """Write ssconf files.
+
+ This is a multi-node call.
+
+ """
+ return cls._StaticMultiNodeCall(node_list, "write_ssconf_files", [values])
def call_os_diagnose(self, node_list):
"""Request a diagnose of OS definitions.
This is a multi-node call.
"""
- c = Client("os_diagnose", [])
- c.connect_list(node_list)
- c.run()
- result = c.getresult()
- new_result = {}
- for node_name in result:
- if result[node_name]:
- nr = [objects.OS.FromDict(oss) for oss in result[node_name]]
- else:
- nr = []
- new_result[node_name] = nr
- return new_result
+ return self._MultiNodeCall(node_list, "os_diagnose", [])
def call_os_get(self, node, name):
"""Returns an OS definition.
This is a single-node call.
"""
- c = Client("os_get", [name])
- c.connect(node)
- c.run()
- result = c.getresult().get(node, False)
- if isinstance(result, dict):
- return objects.OS.FromDict(result)
- else:
- return result
+ result = self._SingleNodeCall(node, "os_get", [name])
+ if not result.fail_msg and isinstance(result.payload, dict):
+ result.payload = objects.OS.FromDict(result.payload)
+ return result
def call_hooks_runner(self, node_list, hpath, phase, env):
"""Call the hooks runner.
"""
params = [hpath, phase, env]
- c = Client("hooks_runner", params)
- c.connect_list(node_list)
- c.run()
- result = c.getresult()
- return result
+ return self._MultiNodeCall(node_list, "hooks_runner", params)
def call_iallocator_runner(self, node, name, idata):
"""Call an iallocator on a remote node
This is a single-node call.
"""
- params = [name, idata]
- c = Client("iallocator_runner", params)
- c.connect(node)
- c.run()
- result = c.getresult().get(node, False)
- return result
+ return self._SingleNodeCall(node, "iallocator_runner", [name, idata])
def call_blockdev_grow(self, node, cf_bdev, amount):
"""Request a snapshot of the given block device.
This is a single-node call.
"""
- c = Client("blockdev_grow", [cf_bdev.ToDict(), amount])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_grow",
+ [cf_bdev.ToDict(), amount])
- def call_blockdev_snapshot(self, node, cf_bdev):
- """Request a snapshot of the given block device.
+ def call_blockdev_export(self, node, cf_bdev,
+ dest_node, dest_path, cluster_name):
+ """Export a given disk to another node.
This is a single-node call.
"""
- c = Client("blockdev_snapshot", [cf_bdev.ToDict()])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_export",
+ [cf_bdev.ToDict(), dest_node, dest_path,
+ cluster_name])
- def call_snapshot_export(self, node, snap_bdev, dest_node, instance,
- cluster_name):
- """Request the export of a given snapshot.
+ def call_blockdev_snapshot(self, node, cf_bdev):
+ """Request a snapshot of the given block device.
This is a single-node call.
"""
- params = [snap_bdev.ToDict(), dest_node, instance.ToDict(), cluster_name]
- c = Client("snapshot_export", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_snapshot", [cf_bdev.ToDict()])
def call_finalize_export(self, node, instance, snap_disks):
"""Request the completion of an export operation.
"""
flat_disks = []
for disk in snap_disks:
- flat_disks.append(disk.ToDict())
- params = [instance.ToDict(), flat_disks]
- c = Client("finalize_export", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ if isinstance(disk, bool):
+ flat_disks.append(disk)
+ else:
+ flat_disks.append(disk.ToDict())
+
+ return self._SingleNodeCall(node, "finalize_export",
+ [self._InstDict(instance), flat_disks])
def call_export_info(self, node, path):
"""Queries the export information in a given path.
This is a single-node call.
"""
- c = Client("export_info", [path])
- c.connect(node)
- c.run()
- result = c.getresult().get(node, False)
- if not result:
- return result
- return objects.SerializableConfigParser.Loads(str(result))
-
- def call_instance_os_import(self, node, inst, osdev, swapdev,
- src_node, src_image, cluster_name):
- """Request the import of a backup into an instance.
-
- This is a single-node call.
-
- """
- params = [inst.ToDict(), osdev, swapdev, src_node, src_image, cluster_name]
- c = Client("instance_os_import", params)
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "export_info", [path])
def call_export_list(self, node_list):
"""Gets the stored exports list.
This is a multi-node call.
"""
- c = Client("export_list", [])
- c.connect_list(node_list)
- c.run()
- result = c.getresult()
- return result
+ return self._MultiNodeCall(node_list, "export_list", [])
def call_export_remove(self, node, export):
"""Requests removal of a given export.
This is a single-node call.
"""
- c = Client("export_remove", [export])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "export_remove", [export])
- @staticmethod
- def call_node_leave_cluster(node):
+ @classmethod
+ def call_node_leave_cluster(cls, node, modify_ssh_setup):
"""Requests a node to clean the cluster information it has.
This will remove the configuration information from the ganeti data
This is a single-node call.
"""
- c = Client("node_leave_cluster", [])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return cls._StaticSingleNodeCall(node, "node_leave_cluster",
+ [modify_ssh_setup])
def call_node_volumes(self, node_list):
"""Gets all volumes on node(s).
This is a multi-node call.
"""
- c = Client("node_volumes", [])
- c.connect_list(node_list)
- c.run()
- return c.getresult()
+ return self._MultiNodeCall(node_list, "node_volumes", [])
+
+ def call_node_demote_from_mc(self, node):
+ """Demote a node from the master candidate role.
+
+ This is a single-node call.
+
+ """
+ return self._SingleNodeCall(node, "node_demote_from_mc", [])
+
+ def call_node_powercycle(self, node, hypervisor):
+ """Tries to powercycle a node.
+
+ This is a single-node call.
+
+ """
+ return self._SingleNodeCall(node, "node_powercycle", [hypervisor])
def call_test_delay(self, node_list, duration):
"""Sleep for a fixed time on given node(s).
This is a multi-node call.
"""
- c = Client("test_delay", [duration])
- c.connect_list(node_list)
- c.run()
- return c.getresult()
+ return self._MultiNodeCall(node_list, "test_delay", [duration])
def call_file_storage_dir_create(self, node, file_storage_dir):
"""Create the given file storage directory.
This is a single-node call.
"""
- c = Client("file_storage_dir_create", [file_storage_dir])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "file_storage_dir_create",
+ [file_storage_dir])
def call_file_storage_dir_remove(self, node, file_storage_dir):
"""Remove the given file storage directory.
This is a single-node call.
"""
- c = Client("file_storage_dir_remove", [file_storage_dir])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "file_storage_dir_remove",
+ [file_storage_dir])
def call_file_storage_dir_rename(self, node, old_file_storage_dir,
new_file_storage_dir):
This is a single-node call.
"""
- c = Client("file_storage_dir_rename",
- [old_file_storage_dir, new_file_storage_dir])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return self._SingleNodeCall(node, "file_storage_dir_rename",
+ [old_file_storage_dir, new_file_storage_dir])
- @staticmethod
- def call_jobqueue_update(node_list, file_name, content):
+ @classmethod
+ def call_jobqueue_update(cls, node_list, address_list, file_name, content):
"""Update job queue.
This is a multi-node call.
"""
- c = Client("jobqueue_update", [file_name, content])
- c.connect_list(node_list)
- c.run()
- result = c.getresult()
- return result
+ return cls._StaticMultiNodeCall(node_list, "jobqueue_update",
+ [file_name, cls._Compress(content)],
+ address_list=address_list)
- @staticmethod
- def call_jobqueue_purge(node):
+ @classmethod
+ def call_jobqueue_purge(cls, node):
"""Purge job queue.
This is a single-node call.
"""
- c = Client("jobqueue_purge", [])
- c.connect(node)
- c.run()
- return c.getresult().get(node, False)
+ return cls._StaticSingleNodeCall(node, "jobqueue_purge", [])
- @staticmethod
- def call_jobqueue_rename(node_list, old, new):
+ @classmethod
+ def call_jobqueue_rename(cls, node_list, address_list, rename):
"""Rename a job queue file.
This is a multi-node call.
"""
- c = Client("jobqueue_rename", [old, new])
- c.connect_list(node_list)
- c.run()
- result = c.getresult()
- return result
+ return cls._StaticMultiNodeCall(node_list, "jobqueue_rename", rename,
+ address_list=address_list)
+ @classmethod
+ def call_jobqueue_set_drain(cls, node_list, drain_flag):
+ """Set the drain flag on the queue.
+
+ This is a multi-node call.
+
+ @type node_list: list
+ @param node_list: the list of nodes to query
+ @type drain_flag: bool
+ @param drain_flag: if True, will set the drain flag, otherwise reset it.
+
+ """
+ return cls._StaticMultiNodeCall(node_list, "jobqueue_set_drain",
+ [drain_flag])
def call_hypervisor_validate_params(self, node_list, hvname, hvparams):
"""Validate the hypervisor params.
"""
cluster = self._cfg.GetClusterInfo()
- hv_full = cluster.FillDict(cluster.hvparams.get(hvname, {}), hvparams)
- c = Client("hypervisor_validate_params", [hvname, hv_full])
- c.connect_list(node_list)
- c.run()
- result = c.getresult()
+ hv_full = objects.FillDict(cluster.hvparams.get(hvname, {}), hvparams)
+ return self._MultiNodeCall(node_list, "hypervisor_validate_params",
+ [hvname, hv_full])
+
+ def call_x509_cert_create(self, node, validity):
+ """Creates a new X509 certificate for SSL/TLS.
+
+ This is a single-node call.
+
+ @type validity: int
+ @param validity: Validity in seconds
+
+ """
+ return self._SingleNodeCall(node, "x509_cert_create", [validity])
+
+ def call_x509_cert_remove(self, node, name):
+ """Removes a X509 certificate.
+
+ This is a single-node call.
+
+ @type name: string
+ @param name: Certificate name
+
+ """
+ return self._SingleNodeCall(node, "x509_cert_remove", [name])
+
+ def call_import_start(self, node, x509_key_name, source_x509_ca,
+ instance, dest, dest_args):
+ """Starts a listener for an import.
+
+ This is a single-node call.
+
+ @type node: string
+ @param node: Node name
+ @type instance: C{objects.Instance}
+ @param instance: Instance object
+
+ """
+ return self._SingleNodeCall(node, "import_start",
+ [x509_key_name, source_x509_ca,
+ self._InstDict(instance), dest,
+ _EncodeImportExportIO(dest, dest_args)])
+
+ def call_export_start(self, node, x509_key_name, dest_x509_ca, host, port,
+ instance, source, source_args):
+ """Starts an export daemon.
+
+ This is a single-node call.
+
+ @type node: string
+ @param node: Node name
+ @type instance: C{objects.Instance}
+ @param instance: Instance object
+
+ """
+ return self._SingleNodeCall(node, "export_start",
+ [x509_key_name, dest_x509_ca, host, port,
+ self._InstDict(instance), source,
+ _EncodeImportExportIO(source, source_args)])
+
+ def call_impexp_status(self, node, names):
+ """Gets the status of an import or export.
+
+ This is a single-node call.
+
+ @type node: string
+ @param node: Node name
+ @type names: List of strings
+ @param names: Import/export names
+ @rtype: List of L{objects.ImportExportStatus} instances
+ @return: Returns a list of the state of each named import/export or None if
+ a status couldn't be retrieved
+
+ """
+ result = self._SingleNodeCall(node, "impexp_status", [names])
+
+ if not result.fail_msg:
+ decoded = []
+
+ for i in result.payload:
+ if i is None:
+ decoded.append(None)
+ continue
+ decoded.append(objects.ImportExportStatus.FromDict(i))
+
+ result.payload = decoded
+
return result
+
+ def call_impexp_abort(self, node, name):
+ """Aborts an import or export.
+
+ This is a single-node call.
+
+ @type node: string
+ @param node: Node name
+ @type name: string
+ @param name: Import/export name
+
+ """
+ return self._SingleNodeCall(node, "impexp_abort", [name])
+
+ def call_impexp_cleanup(self, node, name):
+ """Cleans up after an import or export.
+
+ This is a single-node call.
+
+ @type node: string
+ @param node: Node name
+ @type name: string
+ @param name: Import/export name
+
+ """
+ return self._SingleNodeCall(node, "impexp_cleanup", [name])
projects / ganeti-local / blobdiff