import os
import socket
-import httplib
import logging
-
-import simplejson
+import zlib
+import base64
from ganeti import utils
from ganeti import objects
+from ganeti import http
+from ganeti import serializer
+from ganeti import constants
+from ganeti import errors
+
+import ganeti.http.client
+
+
+# Module level variable
+_http_manager = None
-class NodeController:
- """Node-handling class.
+def Init():
+ """Initializes the module-global HTTP client manager.
- 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.
+ Must be called before using any RPC function.
"""
- def __init__(self, parent, node, address=None):
- """Constructor for the node controller.
+ global _http_manager
- @type parent: L{Client}
- @param parent: the C{Client} instance which holds global parameters for
- the call
- @type node: str
- @param node: the name of the node we connect to; it is used for error
- messages and in cases we the address paramater is not passed
- @type address: str
- @keyword address: the node's address, in case we know it, so that we
- don't need to resolve it; testing shows that httplib has high
- overhead in resolving addresses (even when speficied in /etc/hosts)
+ assert not _http_manager, "RPC module initialized more than once"
- """
- self.parent = parent
+ _http_manager = http.client.HttpClientManager()
+
+
+def Shutdown():
+ """Stops the module-global HTTP client manager.
+
+ Must be called before quitting the program.
+
+ """
+ global _http_manager
+
+ if _http_manager:
+ _http_manager.Shutdown()
+ _http_manager = None
+
+
+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 successfull results, or None
+ @type failed: boolean
+ @ivar failed: whether the operation failed at RPC level (not
+ application level on the remote node)
+ @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
+
+ """
+ def __init__(self, data=None, failed=False, offline=False,
+ call=None, node=None):
+ self.failed = failed
+ self.offline = offline
+ self.call = call
self.node = node
- if address is None:
- address = node
- self.failed = False
-
- self.http_conn = hc = httplib.HTTPConnection(address, parent.port)
- try:
- hc.connect()
- hc.putrequest('PUT', "/%s" % parent.procedure,
- skip_accept_encoding=True)
- hc.putheader('Content-Length', parent.body_length)
- hc.endheaders()
- hc.send(parent.body)
- except socket.error:
- logging.exception("Error connecting to node %s", node)
+ if offline:
self.failed = True
+ self.error = "Node is marked offline"
+ self.data = None
+ elif failed:
+ self.error = data
+ self.data = None
+ else:
+ self.data = data
+ self.error = None
+
+ def Raise(self):
+ """If the result has failed, raise an OpExecError.
- def GetResponse(self):
- """Try to process the response from the node.
+ This is used so that LU code doesn't have to check for each
+ result, but instead can call this function.
"""
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:
- logging.error("Zero-length reply from node %s", self.node)
- return False
- payload = resp.read(length)
- unload = simplejson.loads(payload)
- return unload
+ raise errors.OpExecError("Call '%s' to node '%s' has failed: %s" %
+ (self.call, self.node, self.error))
class Client:
'False' result, which is not good. This overloading of values can
cause bugs.
- @var body_length: cached string value of the length of the body (so that
- individual C{NodeController} instances don't have to recompute it)
-
"""
- 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_length = str(len(self.body))
+ self.body = body
+ self.port = port
+ self.nc = {}
- #--- generic connector -------------
+ self._ssl_params = \
+ http.HttpSslParams(ssl_key_path=constants.SSL_CERT_FILE,
+ ssl_cert_path=constants.SSL_CERT_FILE)
def ConnectList(self, node_list, address_list=None):
"""Add a list of nodes to the target nodes.
@keyword address: the node address, if known
"""
- self.nc[name] = NodeController(self, name, address)
+ 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 GetResults(self):
- """Return the results of the call.
+ """Call nodes and return results.
+
+ @rtype: list
+ @returns: List of RPC results
"""
- return self.results
+ assert _http_manager, "RPC module not intialized"
- def Run(self):
- """Gather results from the node controllers.
+ _http_manager.ExecRequests(self.nc.values())
- This function simply calls GetResponse() for each of our node
- controllers.
+ results = {}
- """
- for node, nc in self.nc.items():
- self.results[node] = nc.GetResponse()
+ 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 from node %s: %s", name, msg)
+ results[name] = RpcResult(data=msg, failed=True, node=name,
+ call=self.procedure)
+
+ return results
class RpcRunner(object):
"""
self._cfg = cfg
+ self.port = utils.GetNodeDaemonPort()
def _InstDict(self, instance):
"""Convert the given instance to a dict.
"""
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)
+ continue
val = all_nodes[node].primary_ip
else:
val = None
addr_list.append(val)
- client.ConnectList(node_list, address_list=addr_list)
+ name_list.append(node)
+ if name_list:
+ client.ConnectList(name_list, address_list=addr_list)
+ return skip_dict
def _ConnectNode(self, client, node):
"""Helper for computing one node's address.
"""
node_info = self._cfg.GetNodeInfo(node)
if node_info is not None:
+ if node_info.offline:
+ return RpcResult(node=node, offline=True)
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)
+ 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.GetNodeDaemonPort())
+ 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)
+ 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.GetNodeDaemonPort())
+ 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.
+
+ @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_volume_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])
- self._ConnectList(c, node_list)
- c.Run()
- return c.GetResults()
+ return self._MultiNodeCall(node_list, "volume_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", [])
- self._ConnectList(c, node_list)
- c.Run()
- return c.GetResults()
+ return self._MultiNodeCall(node_list, "vg_list", [])
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])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "bridges_exist", [bridges_list])
def call_instance_start(self, node, instance, extra_args):
"""Starts an instance.
This is a single-node call.
"""
- c = Client("instance_start", [self._InstDict(instance), extra_args])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "instance_start",
+ [self._InstDict(instance), extra_args])
def call_instance_shutdown(self, node, instance):
"""Stops an instance.
This is a single-node call.
"""
- c = Client("instance_shutdown", [self._InstDict(instance)])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "instance_shutdown",
+ [self._InstDict(instance)])
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", [self._InstDict(instance), target, live])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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):
"""Reboots an instance.
This is a single-node call.
"""
- c = Client("instance_reboot", [self._InstDict(instance),
- reboot_type, extra_args])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "instance_reboot",
+ [self._InstDict(instance), reboot_type,
+ extra_args])
def call_instance_os_add(self, node, inst):
"""Installs an OS on the given instance.
This is a single-node call.
"""
- params = [self._InstDict(inst)]
- c = Client("instance_os_add", params)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "instance_os_add",
+ [self._InstDict(inst)])
def call_instance_run_rename(self, node, inst, old_name):
"""Run the OS rename script for an instance.
This is a single-node call.
"""
- params = [self._InstDict(inst), old_name]
- c = Client("instance_run_rename", params)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "instance_run_rename",
+ [self._InstDict(inst), old_name])
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])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "instance_info", [instance, hname])
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])
- self._ConnectList(c, node_list)
- c.Run()
- return c.GetResults()
+ 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])
- self._ConnectList(c, node_list)
- c.Run()
- return c.GetResults()
+ 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])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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])
- self._ConnectList(c, node_list)
- c.Run()
- retux = c.GetResults()
-
- for node_name in retux:
- ret = retux.get(node_name, False)
- if type(ret) != dict:
- logging.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",
- )
+ retux = self._MultiNodeCall(node_list, "node_info",
+ [vg_name, hypervisor_type])
+
+ for result in retux.itervalues():
+ if result.failed or not isinstance(result.data, dict):
+ result.data = {}
+
+ utils.CheckDict(result.data, {
+ 'memory_total' : '-',
+ 'memory_dom0' : '-',
+ 'memory_free' : '-',
+ 'vg_size' : 'node_unreachable',
+ 'vg_free' : '-',
+ }, "call_node_info")
return retux
def call_node_add(self, node, dsa, dsapub, rsa, rsapub, ssh, sshpub):
This is a single-node call.
"""
- params = [dsa, dsapub, rsa, rsapub, ssh, sshpub]
- c = Client("node_add", params)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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])
- self._ConnectList(c, node_list)
- c.Run()
- return c.GetResults()
+ 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):
"""Tells a node to activate itself as a master.
This is a single-node call.
"""
- c = Client("node_start_master", [start_daemons])
- c.ConnectNode(node)
- c.Run()
- return c.GetResults().get(node, False)
+ return cls._StaticSingleNodeCall(node, "node_start_master",
+ [start_daemons])
- @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.ConnectNode(node)
- c.Run()
- return c.GetResults().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.ConnectList(node_list)
- c.Run()
- return c.GetResults()
+ return cls._StaticMultiNodeCall(node_list, "master_info", [])
def call_version(self, node_list):
"""Query node version.
This is a multi-node call.
"""
- c = Client("version", [])
- self._ConnectList(c, node_list)
- c.Run()
- return c.GetResults()
+ return self._MultiNodeCall(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)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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()])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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()])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_getmirrorstatus",
+ [dsk.ToDict() for dsk in disks])
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()])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_find", [disk.ToDict()])
def call_blockdev_close(self, node, disks):
"""Closes the given block devices.
This is a single-node call.
"""
- params = [cf.ToDict() for cf in disks]
- c = Client("blockdev_close", params)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_close",
+ [cf.ToDict() for cf in disks])
- @staticmethod
- def call_upload_file(node_list, file_name, address_list=None):
+ @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
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.ConnectList(node_list, address_list=address_list)
- c.Run()
- return c.GetResults()
+ 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", [])
- self._ConnectList(c, node_list)
- c.Run()
- result = c.GetResults()
- 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
+ result = self._MultiNodeCall(node_list, "os_diagnose", [])
+
+ for node_result in result.values():
+ if not node_result.failed and node_result.data:
+ node_result.data = [objects.OS.FromDict(oss)
+ for oss in node_result.data]
+ return result
def call_os_get(self, node, name):
"""Returns an OS definition.
This is a single-node call.
"""
- c = Client("os_get", [name])
- self._ConnectNode(c, node)
- c.Run()
- result = c.GetResults().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.failed and isinstance(result.data, dict):
+ result.data = objects.OS.FromDict(result.data)
+ 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)
- self._ConnectList(c, node_list)
- c.Run()
- result = c.GetResults()
- 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)
- self._ConnectNode(c, node)
- c.Run()
- result = c.GetResults().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])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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.
This is a single-node call.
"""
- c = Client("blockdev_snapshot", [cf_bdev.ToDict()])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "blockdev_snapshot", [cf_bdev.ToDict()])
def call_snapshot_export(self, node, snap_bdev, dest_node, instance,
- cluster_name):
+ cluster_name, idx):
"""Request the export of a given snapshot.
This is a single-node call.
"""
- params = [snap_bdev.ToDict(), dest_node,
- self._InstDict(instance), cluster_name]
- c = Client("snapshot_export", params)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "snapshot_export",
+ [snap_bdev.ToDict(), dest_node,
+ self._InstDict(instance), cluster_name, idx])
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 = [self._InstDict(instance), flat_disks]
- c = Client("finalize_export", params)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+
+ 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])
- self._ConnectNode(c, node)
- c.Run()
- result = c.GetResults().get(node, False)
- if not result:
- return result
- return objects.SerializableConfigParser.Loads(str(result))
+ result = self._SingleNodeCall(node, "export_info", [path])
+ if not result.failed and result.data:
+ result.data = objects.SerializableConfigParser.Loads(str(result.data))
+ return result
- def call_instance_os_import(self, node, inst, osdev, swapdev,
- src_node, src_image, cluster_name):
+ def call_instance_os_import(self, node, inst, src_node, src_images,
+ cluster_name):
"""Request the import of a backup into an instance.
This is a single-node call.
"""
- params = [self._InstDict(inst), osdev, swapdev,
- src_node, src_image, cluster_name]
- c = Client("instance_os_import", params)
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().get(node, False)
+ return self._SingleNodeCall(node, "instance_os_import",
+ [self._InstDict(inst), src_node, src_images,
+ cluster_name])
def call_export_list(self, node_list):
"""Gets the stored exports list.
This is a multi-node call.
"""
- c = Client("export_list", [])
- self._ConnectList(c, node_list)
- c.Run()
- result = c.GetResults()
- 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])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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):
"""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.ConnectNode(node)
- c.Run()
- return c.GetResults().get(node, False)
+ return cls._StaticSingleNodeCall(node, "node_leave_cluster", [])
def call_node_volumes(self, node_list):
"""Gets all volumes on node(s).
This is a multi-node call.
"""
- c = Client("node_volumes", [])
- self._ConnectList(c, node_list)
- c.Run()
- return c.GetResults()
+ 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_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])
- self._ConnectList(c, node_list)
- c.Run()
- return c.GetResults()
+ 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])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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])
- self._ConnectNode(c, node)
- c.Run()
- return c.GetResults().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.ConnectList(node_list)
- c.Run()
- result = c.GetResults()
- 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.ConnectNode(node)
- c.Run()
- return c.GetResults().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.ConnectList(node_list)
- c.Run()
- result = c.GetResults()
- return result
+ return cls._StaticMultiNodeCall(node_list, "jobqueue_rename", rename,
+ address_list=address_list)
-
- @staticmethod
- def call_jobqueue_set_drain(node_list, drain_flag):
+ @classmethod
+ def call_jobqueue_set_drain(cls, node_list, drain_flag):
"""Set the drain flag on the queue.
This is a multi-node call.
@param drain_flag: if True, will set the drain flag, otherwise reset it.
"""
- c = Client("jobqueue_set_drain", [drain_flag])
- c.ConnectList(node_list)
- c.Run()
- result = c.GetResults()
- return result
-
+ 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])
- self._ConnectList(c, node_list)
- c.Run()
- result = c.GetResults()
- return result
+ return self._MultiNodeCall(node_list, "hypervisor_validate_params",
+ [hvname, hv_full])
projects / ganeti-local / blobdiff