-#!/usr/bin/python
+#
#
# Copyright (C) 2006, 2007 Google Inc.
# pylint: disable-msg=C0103
import os
+import socket
+import httplib
-from twisted.internet.pollreactor import PollReactor
-
-class ReReactor(PollReactor):
- """A re-startable Reactor implementation.
-
- """
- def run(self, installSignalHandlers=1):
- """Custom run method.
-
- This is customized run that, before calling Reactor.run, will
- reinstall the shutdown events and re-create the threadpool in case
- these are not present (as will happen on the second run of the
- reactor).
-
- """
- if not 'shutdown' in self._eventTriggers:
- # the shutdown queue has been killed, we are most probably
- # at the second run, thus recreate the queue
- self.addSystemEventTrigger('during', 'shutdown', self.crash)
- self.addSystemEventTrigger('during', 'shutdown', self.disconnectAll)
- if self.threadpool is not None and self.threadpool.joined == 1:
- # in case the threadpool has been stopped, re-start it
- # and add a trigger to stop it at reactor shutdown
- self.threadpool.start()
- self.addSystemEventTrigger('during', 'shutdown', self.threadpool.stop)
-
- return PollReactor.run(self, installSignalHandlers)
-
-
-import twisted.internet.main
-twisted.internet.main.installReactor(ReReactor())
-
-from twisted.spread import pb
-from twisted.internet import reactor
-from twisted.cred import credentials
-from OpenSSL import SSL, crypto
+import simplejson
from ganeti import logger
from ganeti import utils
-from ganeti import errors
-from ganeti import constants
from ganeti import objects
from ganeti import ssconf
+
class NodeController:
"""Node-handling class.
def __init__(self, parent, node):
self.parent = parent
self.node = node
+ self.failed = False
- def _check_end(self):
- """Stop the reactor if we got all the results.
-
- """
- if len(self.parent.results) == len(self.parent.nc):
- reactor.stop()
-
- def cb_call(self, obj):
- """Callback for successful connect.
-
- If the connect and login sequence succeeded, we proceed with
- making the actual call.
-
- """
- deferred = obj.callRemote(self.parent.procedure, self.parent.args)
- deferred.addCallbacks(self.cb_done, self.cb_err2)
-
- def cb_done(self, result):
- """Callback for successful call.
-
- When we receive the result from a call, we check if it was an
- error and if so we raise a generic RemoteError (we can't pass yet
- the actual exception over). If there was no error, we store the
- result.
-
- """
- tb, self.parent.results[self.node] = result
- self._check_end()
- if tb:
- raise errors.RemoteError("Remote procedure error calling %s on %s:"
- "\n%s" % (self.parent.procedure,
- self.node,
- tb))
-
- def cb_err1(self, reason):
- """Error callback for unsuccessful connect.
-
- """
- logger.Error("caller_connect: could not connect to remote host %s,"
- " reason %s" % (self.node, reason))
- self.parent.results[self.node] = False
- self._check_end()
-
- def cb_err2(self, reason):
- """Error callback for unsuccessful call.
-
- This is when the call didn't return anything, not even an error,
- or when it time out, etc.
-
- """
- logger.Error("caller_call: could not call %s on node %s,"
- " reason %s" % (self.parent.procedure, self.node, reason))
- self.parent.results[self.node] = False
- self._check_end()
-
-
-class MirrorContextFactory:
- """Certificate verifier factory.
-
- This factory creates contexts that verify if the remote end has a
- specific certificate (i.e. our own certificate).
-
- The checks we do are that the PEM dump of the certificate is the
- same as our own and (somewhat redundantly) that the SHA checksum is
- the same.
-
- """
- isClient = 1
-
- def __init__(self):
+ self.http_conn = hc = httplib.HTTPConnection(node, self.parent.port)
try:
- fd = open(constants.SSL_CERT_FILE, 'r')
- try:
- data = fd.read(16384)
- finally:
- fd.close()
- except EnvironmentError, err:
- raise errors.ConfigurationError("missing SSL certificate: %s" %
- str(err))
- self.mycert = crypto.load_certificate(crypto.FILETYPE_PEM, data)
- self.mypem = crypto.dump_certificate(crypto.FILETYPE_PEM, self.mycert)
- self.mydigest = self.mycert.digest('SHA')
-
- def verifier(self, conn, x509, errno, err_depth, retcode):
- """Certificate verify method.
+ 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.mydigest != x509.digest('SHA'):
+ if self.failed:
+ # we already failed in connect
return False
- if crypto.dump_certificate(crypto.FILETYPE_PEM, x509) != self.mypem:
+ resp = self.http_conn.getresponse()
+ if resp.status != 200:
return False
- return True
-
- def getContext(self):
- """Context generator.
+ 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
- """
- context = SSL.Context(SSL.TLSv1_METHOD)
- context.set_verify(SSL.VERIFY_PEER, self.verifier)
- return context
class Client:
"""RPC Client class.
- This class, given a (remote) ethod name, a list of parameters and a
+ This class, given a (remote) method name, a list of parameters and a
list of nodes, will contact (in parallel) all nodes, and return a
dict of results (key: node name, value: result).
self.results = {}
self.procedure = procedure
self.args = args
+ self.body = simplejson.dumps(args)
#--- generic connector -------------
"""Add a node to the target list.
"""
- factory = pb.PBClientFactory()
self.nc[connect_node] = nc = NodeController(self, connect_node)
- reactor.connectSSL(connect_node, self.port, factory,
- MirrorContextFactory())
- #d = factory.getRootObject()
- d = factory.login(credentials.UsernamePassword("master_node", self.nodepw))
- d.addCallbacks(nc.cb_call, nc.cb_err1)
def getresult(self):
"""Return the results of the call.
queued, otherwise it does nothing.
"""
- if self.nc:
- reactor.run()
+ for node, nc in self.nc.items():
+ self.results[node] = nc.get_response()
def call_volume_list(node_list, vg_name):
def call_instance_start(node, instance, extra_args):
- """Stars an instance.
+ """Starts an instance.
This is a single-node call.
return c.getresult().get(node, False)
+def call_instance_migrate(node, instance, target, live):
+ """Migrate an instance.
+
+ This is a single-node call.
+
+ """
+ c = Client("instance_migrate", [instance.name, target, live])
+ c.connect(node)
+ c.run()
+ return c.getresult().get(node, False)
+
+
+def call_instance_reboot(node, instance, reboot_type, extra_args):
+ """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)
+
+
def call_instance_os_add(node, inst, osdev, swapdev):
"""Installs an OS on the given instance.
return c.getresult()
+def call_node_tcp_ping(node, source, target, port, timeout, live_port_needed):
+ """Do a TcpPing on the remote node
+
+ This is a single-node call.
+ """
+ c = Client("node_tcp_ping", [source, target, port, timeout,
+ live_port_needed])
+ c.connect(node)
+ c.run()
+ return c.getresult().get(node, False)
+
+
def call_node_info(node_list, vg_name):
"""Return node information.
return c.getresult()
-def call_node_start_master(node):
+def call_node_start_master(node, start_daemons):
"""Tells a node to activate itself as a master.
This is a single-node call.
"""
- c = Client("node_start_master", [])
+ c = Client("node_start_master", [start_daemons])
c.connect(node)
c.run()
return c.getresult().get(node, False)
-def call_node_stop_master(node):
+def call_node_stop_master(node, stop_daemons):
"""Tells a node to demote itself from master status.
This is a single-node call.
"""
- c = Client("node_stop_master", [])
+ c = Client("node_stop_master", [stop_daemons])
c.connect(node)
c.run()
return c.getresult().get(node, False)
return c.getresult()
-def call_blockdev_create(node, bdev, size, on_primary, info):
+def call_blockdev_create(node, bdev, size, owner, on_primary, info):
"""Request creation of a given block device.
This is a single-node call.
"""
- params = [bdev.ToDict(), size, on_primary, info]
+ params = [bdev.ToDict(), size, owner, on_primary, info]
c = Client("blockdev_create", params)
c.connect(node)
c.run()
return c.getresult().get(node, False)
-def call_blockdev_assemble(node, disk, on_primary):
+def call_blockdev_rename(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)
+
+
+def call_blockdev_assemble(node, disk, owner, on_primary):
"""Request assembling of a given block device.
This is a single-node call.
"""
- params = [disk.ToDict(), on_primary]
+ params = [disk.ToDict(), owner, on_primary]
c = Client("blockdev_assemble", params)
c.connect(node)
c.run()
return c.getresult().get(node, False)
-def call_blockdev_addchild(node, bdev, ndev):
- """Request adding a new child to a (mirroring) device.
+def call_blockdev_addchildren(node, bdev, ndevs):
+ """Request adding a list of children to a (mirroring) device.
This is a single-node call.
"""
- params = [bdev.ToDict(), ndev.ToDict()]
- c = Client("blockdev_addchild", params)
+ 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)
-def call_blockdev_removechild(node, bdev, ndev):
- """Request removing a new child from a (mirroring) device.
+def call_blockdev_removechildren(node, bdev, ndevs):
+ """Request removing a list of children from a (mirroring) device.
This is a single-node call.
"""
- params = [bdev.ToDict(), ndev.ToDict()]
- c = Client("blockdev_removechild", params)
+ 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 c.getresult().get(node, False)
+def call_blockdev_close(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)
+ c.connect(node)
+ c.run()
+ return c.getresult().get(node, False)
+
+
def call_upload_file(node_list, file_name):
"""Upload a file.
result = c.getresult()
new_result = {}
for node_name in result:
- nr = []
if result[node_name]:
- for data in result[node_name]:
- if data:
- if isinstance(data, dict):
- nr.append(objects.OS.FromDict(data))
- elif isinstance(data, tuple) and len(data) == 3:
- nr.append(errors.InvalidOS(data[0], data[1], data[2]))
- else:
- raise errors.ProgrammerError("Invalid data from"
- " xcserver.os_diagnose")
+ nr = [objects.OS.FromDict(oss) for oss in result[node_name]]
+ else:
+ nr = []
new_result[node_name] = nr
return new_result
-def call_os_get(node_list, name):
+def call_os_get(node, name):
"""Returns an OS definition.
- This is a multi-node call.
+ This is a single-node call.
"""
c = Client("os_get", [name])
- c.connect_list(node_list)
+ c.connect(node)
c.run()
- result = c.getresult()
- new_result = {}
- for node_name in result:
- data = result[node_name]
- if isinstance(data, dict):
- new_result[node_name] = objects.OS.FromDict(data)
- elif isinstance(data, tuple) and len(data) == 3:
- new_result[node_name] = errors.InvalidOS(data[0], data[1], data[2])
- else:
- new_result[node_name] = data
- return new_result
+ result = c.getresult().get(node, False)
+ if isinstance(result, dict):
+ return objects.OS.FromDict(result)
+ else:
+ return result
def call_hooks_runner(node_list, hpath, phase, env):
return result
+def call_iallocator_runner(node, name, idata):
+ """Call an iallocator on a remote node
+
+ Args:
+ - name: the iallocator name
+ - input: the json-encoded input string
+
+ 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
+
+
+def call_blockdev_grow(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)
+
+
def call_blockdev_snapshot(node, cf_bdev):
"""Request a snapshot of the given block device.
result = c.getresult().get(node, False)
if not result:
return result
- return objects.SerializableConfigParser.Loads(result)
+ return objects.SerializableConfigParser.Loads(str(result))
def call_instance_os_import(node, inst, osdev, swapdev, src_node, src_image):
c.connect_list(node_list)
c.run()
return c.getresult()
+
+
+def call_test_delay(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()
+
+
+def call_file_storage_dir_create(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)
+
+
+def call_file_storage_dir_remove(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)
+
+
+def call_file_storage_dir_rename(node, old_file_storage_dir,
+ new_file_storage_dir):
+ """Rename file storage directory.
+
+ 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)
projects / ganeti-local / blobdiff