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+      #
+      #
       # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Google Inc.
+      #
       # This program is free software; you can redistribute it and/or modify
       # it under the terms of the GNU General Public License as published by
       # the Free Software Foundation; either version 2 of the License, or
       # (at your option) any later version.
+      #
       # This program is distributed in the hope that it will be useful, but
       # WITHOUT ANY WARRANTY; without even the implied warranty of
       # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       # General Public License for more details.
+      #
       # You should have received a copy of the GNU General Public License
       # along with this program; if not, write to the Free Software
       # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
       # 02110-1301, USA.
       """Remote API resource implementations.
       PUT or POST?
       ============
       According to RFC2616 the main difference between PUT and POST is that
       POST can create new resources but PUT can only create the resource the
       URI was pointing to on the PUT request.
       In the context of this module POST on ``/2/instances`` to change an existing
       entity is legitimate, while PUT would not be. PUT creates a new entity (e.g. a
       new instance) with a name specified in the request.
       Quoting from RFC2616, section 9.6::
         The fundamental difference between the POST and PUT requests is reflected in
         the different meaning of the Request-URI. The URI in a POST request
         identifies the resource that will handle the enclosed entity. That resource
         might be a data-accepting process, a gateway to some other protocol, or a
         separate entity that accepts annotations. In contrast, the URI in a PUT
         request identifies the entity enclosed with the request -- the user agent
         knows what URI is intended and the server MUST NOT attempt to apply the
         request to some other resource. If the server desires that the request be
         applied to a different URI, it MUST send a 301 (Moved Permanently) response;
         the user agent MAY then make its own decision regarding whether or not to
         redirect the request.
       So when adding new methods, if they are operating on the URI entity itself,
       PUT should be prefered over POST.
       """
       # pylint: disable-msg=C0103
       # C0103: Invalid name, since the R_* names are not conforming
       from ganeti import opcodes
       from ganeti import http
       from ganeti import constants
       from ganeti import cli
       from ganeti import rapi
       from ganeti import ht
       from ganeti import compat
       from ganeti import ssconf
       from ganeti.rapi import baserlib
       _COMMON_FIELDS = ["ctime", "mtime", "uuid", "serial_no", "tags"]
       I_FIELDS = ["name", "admin_state", "os",
                   "pnode", "snodes",
                   "disk_template",
                   "nic.ips", "nic.macs", "nic.modes", "nic.links", "nic.bridges",
                   "network_port",
                   "disk.sizes", "disk_usage",
                   "beparams", "hvparams",
                   "oper_state", "oper_ram", "oper_vcpus", "status",
                   "custom_hvparams", "custom_beparams", "custom_nicparams",
                   ] + _COMMON_FIELDS
       N_FIELDS = ["name", "offline", "master_candidate", "drained",
                   "dtotal", "dfree",
                   "mtotal", "mnode", "mfree",
                   "pinst_cnt", "sinst_cnt",
                   "ctotal", "cnodes", "csockets",
                   "pip", "sip", "role",
                   "pinst_list", "sinst_list",
                   "master_capable", "vm_capable",
                   "group.uuid",
                   ] + _COMMON_FIELDS
       G_FIELDS = [
         "alloc_policy",
         "name",
         "node_cnt",
         "node_list",
         ] + _COMMON_FIELDS
       J_FIELDS_BULK = [
         "id", "ops", "status", "summary",
         "opstatus",
         "received_ts", "start_ts", "end_ts",
+        ]
       J_FIELDS = J_FIELDS_BULK + [
         "oplog",
         "opresult",
+        ]
       _NR_DRAINED = "drained"
       _NR_MASTER_CANDIDATE = "master-candidate"
       _NR_MASTER = "master"
       _NR_OFFLINE = "offline"
       _NR_REGULAR = "regular"
       _NR_MAP = {
         constants.NR_MASTER: _NR_MASTER,
         constants.NR_MCANDIDATE: _NR_MASTER_CANDIDATE,
         constants.NR_DRAINED: _NR_DRAINED,
         constants.NR_OFFLINE: _NR_OFFLINE,
         constants.NR_REGULAR: _NR_REGULAR,
+        }
       assert frozenset(_NR_MAP.keys()) == constants.NR_ALL
       # Request data version field
       _REQ_DATA_VERSION = "__version__"
       # Feature string for instance creation request data version 1
       _INST_CREATE_REQV1 = "instance-create-reqv1"
       # Feature string for instance reinstall request version 1
       _INST_REINSTALL_REQV1 = "instance-reinstall-reqv1"
       # Feature string for node migration version 1
       _NODE_MIGRATE_REQV1 = "node-migrate-reqv1"
       # Feature string for node evacuation with LU-generated jobs
       _NODE_EVAC_RES1 = "node-evac-res1"
       ALL_FEATURES = frozenset([
         _INST_CREATE_REQV1,
         _INST_REINSTALL_REQV1,
         _NODE_MIGRATE_REQV1,
         _NODE_EVAC_RES1,
         ])
       # Timeout for /2/jobs/[job_id]/wait. Gives job up to 10 seconds to change.
       _WFJC_TIMEOUT = 10
       class R_root(baserlib.ResourceBase):
         """/ resource.
         """
         @staticmethod
         def GET():
           """Supported for legacy reasons.
           """
           return None
       class R_version(baserlib.ResourceBase):
         """/version resource.
         This resource should be used to determine the remote API version and
         to adapt clients accordingly.
         """
         @staticmethod
         def GET():
           """Returns the remote API version.
           """
           return constants.RAPI_VERSION
       class R_2_info(baserlib.ResourceBase):
         """/2/info resource.
         """
         def GET(self):
           """Returns cluster information.
           """
           client = self.GetClient()
           return client.QueryClusterInfo()
       class R_2_features(baserlib.ResourceBase):
         """/2/features resource.
         """
         @staticmethod
         def GET():
           """Returns list of optional RAPI features implemented.
           """
           return list(ALL_FEATURES)
       class R_2_os(baserlib.ResourceBase):
         """/2/os resource.
         """
         def GET(self):
           """Return a list of all OSes.
           Can return error 500 in case of a problem.
           Example: ["debian-etch"]
           """
           cl = self.GetClient()
           op = opcodes.OpOsDiagnose(output_fields=["name", "variants"], names=[])
           job_id = self.SubmitJob([op], cl=cl)
           # we use custom feedback function, instead of print we log the status
           result = cli.PollJob(job_id, cl, feedback_fn=baserlib.FeedbackFn)
           diagnose_data = result[0]
           if not isinstance(diagnose_data, list):
             raise http.HttpBadGateway(message="Can't get OS list")
           os_names = []
           for (name, variants) in diagnose_data:
             os_names.extend(cli.CalculateOSNames(name, variants))
           return os_names
       class R_2_redist_config(baserlib.OpcodeResource):
         """/2/redistribute-config resource.
         """
         PUT_OPCODE = opcodes.OpClusterRedistConf
       class R_2_cluster_modify(baserlib.OpcodeResource):
         """/2/modify resource.
         """
         PUT_OPCODE = opcodes.OpClusterSetParams
       class R_2_jobs(baserlib.ResourceBase):
         """/2/jobs resource.
         """
         def GET(self):
           """Returns a dictionary of jobs.
           @return: a dictionary with jobs id and uri.
           """
           client = self.GetClient()
           if self.useBulk():
             bulkdata = client.QueryJobs(None, J_FIELDS_BULK)
             return baserlib.MapBulkFields(bulkdata, J_FIELDS_BULK)
           else:
             jobdata = map(compat.fst, client.QueryJobs(None, ["id"]))
             return baserlib.BuildUriList(jobdata, "/2/jobs/%s",
                                          uri_fields=("id", "uri"))
       class R_2_jobs_id(baserlib.ResourceBase):
         """/2/jobs/[job_id] resource.
         """
         def GET(self):
           """Returns a job status.
           @return: a dictionary with job parameters.
               The result includes:
                   - id: job ID as a number
                   - status: current job status as a string
                   - ops: involved OpCodes as a list of dictionaries for each
                     opcodes in the job
                   - opstatus: OpCodes status as a list
                   - opresult: OpCodes results as a list of lists
           """
           job_id = self.items[0]
           result = self.GetClient().QueryJobs([job_id, ], J_FIELDS)[0]
           if result is None:
             raise http.HttpNotFound()
           return baserlib.MapFields(J_FIELDS, result)
         def DELETE(self):
           """Cancel not-yet-started job.
           """
           job_id = self.items[0]
           result = self.GetClient().CancelJob(job_id)
           return result
       class R_2_jobs_id_wait(baserlib.ResourceBase):
         """/2/jobs/[job_id]/wait resource.
         """
         # WaitForJobChange provides access to sensitive information and blocks
         # machine resources (it's a blocking RAPI call), hence restricting access.
         GET_ACCESS = [rapi.RAPI_ACCESS_WRITE]
         def GET(self):
           """Waits for job changes.
           """
           job_id = self.items[0]
           fields = self.getBodyParameter("fields")
           prev_job_info = self.getBodyParameter("previous_job_info", None)
           prev_log_serial = self.getBodyParameter("previous_log_serial", None)
           if not isinstance(fields, list):
             raise http.HttpBadRequest("The 'fields' parameter should be a list")
           if not (prev_job_info is None or isinstance(prev_job_info, list)):
             raise http.HttpBadRequest("The 'previous_job_info' parameter should"
                                       " be a list")
           if not (prev_log_serial is None or
                   isinstance(prev_log_serial, (int, long))):
             raise http.HttpBadRequest("The 'previous_log_serial' parameter should"
                                       " be a number")
           client = self.GetClient()
           result = client.WaitForJobChangeOnce(job_id, fields,
                                                prev_job_info, prev_log_serial,
                                                timeout=_WFJC_TIMEOUT)
           if not result:
             raise http.HttpNotFound()
           if result == constants.JOB_NOTCHANGED:
             # No changes
             return None
           (job_info, log_entries) = result
           return {
             "job_info": job_info,
             "log_entries": log_entries,
+            }
       class R_2_nodes(baserlib.ResourceBase):
         """/2/nodes resource.
         """
         def GET(self):
           """Returns a list of all nodes.
           """
           client = self.GetClient()
           if self.useBulk():
             bulkdata = client.QueryNodes([], N_FIELDS, False)
             return baserlib.MapBulkFields(bulkdata, N_FIELDS)
           else:
             nodesdata = client.QueryNodes([], ["name"], False)
             nodeslist = [row[0] for row in nodesdata]
             return baserlib.BuildUriList(nodeslist, "/2/nodes/%s",
                                          uri_fields=("id", "uri"))
       class R_2_nodes_name(baserlib.ResourceBase):
         """/2/nodes/[node_name] resource.
         """
         def GET(self):
           """Send information about a node.
           """
           node_name = self.items[0]
           client = self.GetClient()
           result = baserlib.HandleItemQueryErrors(client.QueryNodes,
                                                   names=[node_name], fields=N_FIELDS,
                                                   use_locking=self.useLocking())
           return baserlib.MapFields(N_FIELDS, result[0])
       class R_2_nodes_name_role(baserlib.OpcodeResource):
         """/2/nodes/[node_name]/role resource.
         """
         PUT_OPCODE = opcodes.OpNodeSetParams
         def GET(self):
           """Returns the current node role.
           @return: Node role
           """
           node_name = self.items[0]
           client = self.GetClient()
           result = client.QueryNodes(names=[node_name], fields=["role"],
                                      use_locking=self.useLocking())
           return _NR_MAP[result[0][0]]
         def GetPutOpInput(self):
           """Sets the node role.
           """
           baserlib.CheckType(self.request_body, basestring, "Body contents")
           role = self.request_body
           if role == _NR_REGULAR:
             candidate = False
             offline = False
             drained = False
           elif role == _NR_MASTER_CANDIDATE:
             candidate = True
             offline = drained = None
           elif role == _NR_DRAINED:
             drained = True
             candidate = offline = None
           elif role == _NR_OFFLINE:
             offline = True
             candidate = drained = None
           else:
             raise http.HttpBadRequest("Can't set '%s' role" % role)
           assert len(self.items) == 1
           return ({}, {
             "node_name": self.items[0],
             "master_candidate": candidate,
             "offline": offline,
             "drained": drained,
             "force": self.useForce(),
             })
       class R_2_nodes_name_evacuate(baserlib.OpcodeResource):
         """/2/nodes/[node_name]/evacuate resource.
         """
         POST_OPCODE = opcodes.OpNodeEvacuate
         def GetPostOpInput(self):
           """Evacuate all instances off a node.
           """
           return (self.request_body, {
             "node_name": self.items[0],
             "dry_run": self.dryRun(),
             })
       class R_2_nodes_name_migrate(baserlib.OpcodeResource):
         """/2/nodes/[node_name]/migrate resource.
         """
         POST_OPCODE = opcodes.OpNodeMigrate
         def GetPostOpInput(self):
           """Migrate all primary instances from a node.
           """
           if self.queryargs:
             # Support old-style requests
             if "live" in self.queryargs and "mode" in self.queryargs:
               raise http.HttpBadRequest("Only one of 'live' and 'mode' should"
                                         " be passed")
             if "live" in self.queryargs:
               if self._checkIntVariable("live", default=1):
                 mode = constants.HT_MIGRATION_LIVE
               else:
                 mode = constants.HT_MIGRATION_NONLIVE
             else:
               mode = self._checkStringVariable("mode", default=None)
             data = {
               "mode": mode,
+              }
           else:
             data = self.request_body
           return (data, {
             "node_name": self.items[0],
             })
       class R_2_nodes_name_storage(baserlib.OpcodeResource):
         """/2/nodes/[node_name]/storage resource.
         """
         # LUNodeQueryStorage acquires locks, hence restricting access to GET
         GET_ACCESS = [rapi.RAPI_ACCESS_WRITE]
         GET_OPCODE = opcodes.OpNodeQueryStorage
         def GetGetOpInput(self):
           """List storage available on a node.
           """
           storage_type = self._checkStringVariable("storage_type", None)
           output_fields = self._checkStringVariable("output_fields", None)
           if not output_fields:
             raise http.HttpBadRequest("Missing the required 'output_fields'"
                                       " parameter")
           return ({}, {
             "nodes": [self.items[0]],
             "storage_type": storage_type,
             "output_fields": output_fields.split(","),
             })
       class R_2_nodes_name_storage_modify(baserlib.OpcodeResource):
         """/2/nodes/[node_name]/storage/modify resource.
         """
         PUT_OPCODE = opcodes.OpNodeModifyStorage
         def GetPutOpInput(self):
           """Modifies a storage volume on a node.
           """
           storage_type = self._checkStringVariable("storage_type", None)
           name = self._checkStringVariable("name", None)
           if not name:
             raise http.HttpBadRequest("Missing the required 'name'"
                                       " parameter")
           changes = {}
           if "allocatable" in self.queryargs:
             changes[constants.SF_ALLOCATABLE] = \
               bool(self._checkIntVariable("allocatable", default=1))
           return ({}, {
             "node_name": self.items[0],
             "storage_type": storage_type,
             "name": name,
             "changes": changes,
             })
       class R_2_nodes_name_storage_repair(baserlib.OpcodeResource):
         """/2/nodes/[node_name]/storage/repair resource.
         """
         PUT_OPCODE = opcodes.OpRepairNodeStorage
         def GetPutOpInput(self):
           """Repairs a storage volume on a node.
           """
           storage_type = self._checkStringVariable("storage_type", None)
           name = self._checkStringVariable("name", None)
           if not name:
             raise http.HttpBadRequest("Missing the required 'name'"
                                       " parameter")
           return ({}, {
             "node_name": self.items[0],
             "storage_type": storage_type,
             "name": name,
             })
       class R_2_groups(baserlib.OpcodeResource):
         """/2/groups resource.
         """
         POST_OPCODE = opcodes.OpGroupAdd
         POST_RENAME = {
           "name": "group_name",
+          }
         def GetPostOpInput(self):
           """Create a node group.
           """
           assert not self.items
           return (self.request_body, {
             "dry_run": self.dryRun(),
             })
         def GET(self):
           """Returns a list of all node groups.
           """
           client = self.GetClient()
           if self.useBulk():
             bulkdata = client.QueryGroups([], G_FIELDS, False)
             return baserlib.MapBulkFields(bulkdata, G_FIELDS)
           else:
             data = client.QueryGroups([], ["name"], False)
             groupnames = [row[0] for row in data]
             return baserlib.BuildUriList(groupnames, "/2/groups/%s",
                                          uri_fields=("name", "uri"))
       class R_2_groups_name(baserlib.OpcodeResource):
         """/2/groups/[group_name] resource.
         """
         DELETE_OPCODE = opcodes.OpGroupRemove
         def GET(self):
           """Send information about a node group.
           """
           group_name = self.items[0]
           client = self.GetClient()
           result = baserlib.HandleItemQueryErrors(client.QueryGroups,
                                                   names=[group_name], fields=G_FIELDS,
                                                   use_locking=self.useLocking())
           return baserlib.MapFields(G_FIELDS, result[0])
         def GetDeleteOpInput(self):
           """Delete a node group.
           """
           assert len(self.items) == 1
           return ({}, {
             "group_name": self.items[0],
             "dry_run": self.dryRun(),
             })
       class R_2_groups_name_modify(baserlib.OpcodeResource):
         """/2/groups/[group_name]/modify resource.
         """
         PUT_OPCODE = opcodes.OpGroupSetParams
         def GetPutOpInput(self):
           """Changes some parameters of node group.
           """
           assert self.items
           return (self.request_body, {
             "group_name": self.items[0],
             })
       class R_2_groups_name_rename(baserlib.OpcodeResource):
         """/2/groups/[group_name]/rename resource.
         """
         PUT_OPCODE = opcodes.OpGroupRename
         def GetPutOpInput(self):
           """Changes the name of a node group.
           """
           assert len(self.items) == 1
           return (self.request_body, {
             "group_name": self.items[0],
             "dry_run": self.dryRun(),
             })
       class R_2_groups_name_assign_nodes(baserlib.OpcodeResource):
         """/2/groups/[group_name]/assign-nodes resource.
         """
         PUT_OPCODE = opcodes.OpGroupAssignNodes
         def GetPutOpInput(self):
           """Assigns nodes to a group.
           """
           assert len(self.items) == 1
           return (self.request_body, {
             "group_name": self.items[0],
             "dry_run": self.dryRun(),
             "force": self.useForce(),
             })
       def _ParseInstanceCreateRequestVersion1(data, dry_run):
         """Parses an instance creation request version 1.
         @rtype: L{opcodes.OpInstanceCreate}
         @return: Instance creation opcode
         """
         override = {
           "dry_run": dry_run,
+          }
         rename = {
           "os": "os_type",
           "name": "instance_name",
+          }
         return baserlib.FillOpcode(opcodes.OpInstanceCreate, data, override,
                                    rename=rename)
       class R_2_instances(baserlib.ResourceBase):
         """/2/instances resource.
         """
         def GET(self):
           """Returns a list of all available instances.
           """
           client = self.GetClient()
           use_locking = self.useLocking()
           if self.useBulk():
             bulkdata = client.QueryInstances([], I_FIELDS, use_locking)
             return baserlib.MapBulkFields(bulkdata, I_FIELDS)
           else:
             instancesdata = client.QueryInstances([], ["name"], use_locking)
             instanceslist = [row[0] for row in instancesdata]
             return baserlib.BuildUriList(instanceslist, "/2/instances/%s",
                                          uri_fields=("id", "uri"))
         def POST(self):
           """Create an instance.
           @return: a job id
           """
           if not isinstance(self.request_body, dict):
             raise http.HttpBadRequest("Invalid body contents, not a dictionary")
           # Default to request data version 0
           data_version = self.getBodyParameter(_REQ_DATA_VERSION, 0)
           if data_version == 0:
             raise http.HttpBadRequest("Instance creation request version 0 is no"
                                       " longer supported")
           elif data_version == 1:
             data = self.request_body.copy()
             # Remove "__version__"
             data.pop(_REQ_DATA_VERSION, None)
             op = _ParseInstanceCreateRequestVersion1(data, self.dryRun())
           else:
             raise http.HttpBadRequest("Unsupported request data version %s" %
                                       data_version)
           return self.SubmitJob([op])
       class R_2_instances_name(baserlib.OpcodeResource):
         """/2/instances/[instance_name] resource.
         """
         DELETE_OPCODE = opcodes.OpInstanceRemove
         def GET(self):
           """Send information about an instance.
           """
           client = self.GetClient()
           instance_name = self.items[0]
           result = baserlib.HandleItemQueryErrors(client.QueryInstances,
                                                   names=[instance_name],
                                                   fields=I_FIELDS,
                                                   use_locking=self.useLocking())
           return baserlib.MapFields(I_FIELDS, result[0])
         def GetDeleteOpInput(self):
           """Delete an instance.
           """
           assert len(self.items) == 1
           return ({}, {
             "instance_name": self.items[0],
             "ignore_failures": False,
             "dry_run": self.dryRun(),
             })
       class R_2_instances_name_info(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/info resource.
         """
         GET_OPCODE = opcodes.OpInstanceQueryData
         def GetGetOpInput(self):
           """Request detailed instance information.
           """
           assert len(self.items) == 1
           return ({}, {
             "instances": [self.items[0]],
             "static": bool(self._checkIntVariable("static", default=0)),
             })
       class R_2_instances_name_reboot(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/reboot resource.
         Implements an instance reboot.
         """
         POST_OPCODE = opcodes.OpInstanceReboot
         def GetPostOpInput(self):
           """Reboot an instance.
           The URI takes type=[hard|soft|full] and
           ignore_secondaries=[False|True] parameters.
           """
           return ({}, {
             "instance_name": self.items[0],
             "reboot_type":
               self.queryargs.get("type", [constants.INSTANCE_REBOOT_HARD])[0],
             "ignore_secondaries": bool(self._checkIntVariable("ignore_secondaries")),
             "dry_run": self.dryRun(),
             })
       class R_2_instances_name_startup(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/startup resource.
         Implements an instance startup.
         """
         PUT_OPCODE = opcodes.OpInstanceStartup
         def GetPutOpInput(self):
           """Startup an instance.
           The URI takes force=[False|True] parameter to start the instance
           if even if secondary disks are failing.
           """
           return ({}, {
             "instance_name": self.items[0],
             "force": self.useForce(),
             "dry_run": self.dryRun(),
             "no_remember": bool(self._checkIntVariable("no_remember")),
             })
       class R_2_instances_name_shutdown(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/shutdown resource.
         Implements an instance shutdown.
         """
         PUT_OPCODE = opcodes.OpInstanceShutdown
         def GetPutOpInput(self):
           """Shutdown an instance.
           """
           return (self.request_body, {
             "instance_name": self.items[0],
             "no_remember": bool(self._checkIntVariable("no_remember")),
             "dry_run": self.dryRun(),
             })
       def _ParseInstanceReinstallRequest(name, data):
         """Parses a request for reinstalling an instance.
         """
         if not isinstance(data, dict):
           raise http.HttpBadRequest("Invalid body contents, not a dictionary")
         ostype = baserlib.CheckParameter(data, "os", default=None)
         start = baserlib.CheckParameter(data, "start", exptype=bool,
                                         default=True)
         osparams = baserlib.CheckParameter(data, "osparams", default=None)
         ops = [
           opcodes.OpInstanceShutdown(instance_name=name),
           opcodes.OpInstanceReinstall(instance_name=name, os_type=ostype,
                                       osparams=osparams),
+          ]
         if start:
           ops.append(opcodes.OpInstanceStartup(instance_name=name, force=False))
         return ops
       class R_2_instances_name_reinstall(baserlib.ResourceBase):
         """/2/instances/[instance_name]/reinstall resource.
         Implements an instance reinstall.
         """
         def POST(self):
           """Reinstall an instance.
           The URI takes os=name and nostartup=[0|1] optional
           parameters. By default, the instance will be started
           automatically.
           """
           if self.request_body:
             if self.queryargs:
               raise http.HttpBadRequest("Can't combine query and body parameters")
             body = self.request_body
           elif self.queryargs:
             # Legacy interface, do not modify/extend
             body = {
               "os": self._checkStringVariable("os"),
               "start": not self._checkIntVariable("nostartup"),
+              }
           else:
             body = {}
           ops = _ParseInstanceReinstallRequest(self.items[0], body)
           return self.SubmitJob(ops)
       class R_2_instances_name_replace_disks(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/replace-disks resource.
         """
         POST_OPCODE = opcodes.OpInstanceReplaceDisks
         def GetPostOpInput(self):
           """Replaces disks on an instance.
           """
           data = self.request_body.copy()
           static = {
             "instance_name": self.items[0],
+            }
           # Parse disks
           try:
             raw_disks = data["disks"]
           except KeyError:
             pass
           else:
             if not ht.TListOf(ht.TInt)(raw_disks): # pylint: disable-msg=E1102
               # Backwards compatibility for strings of the format "1, 2, 3"
               try:
                 data["disks"] = [int(part) for part in raw_disks.split(",")]
               except (TypeError, ValueError), err:
                 raise http.HttpBadRequest("Invalid disk index passed: %s" % err)
           return (data, static)
       class R_2_instances_name_activate_disks(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/activate-disks resource.
         """
         PUT_OPCODE = opcodes.OpInstanceActivateDisks
         def GetPutOpInput(self):
           """Activate disks for an instance.
           The URI might contain ignore_size to ignore current recorded size.
           """
           return ({}, {
             "instance_name": self.items[0],
             "ignore_size": bool(self._checkIntVariable("ignore_size")),
             })
       class R_2_instances_name_deactivate_disks(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/deactivate-disks resource.
         """
         PUT_OPCODE = opcodes.OpInstanceDeactivateDisks
         def GetPutOpInput(self):
           """Deactivate disks for an instance.
           """
           return ({}, {
             "instance_name": self.items[0],
             })
       class R_2_instances_name_prepare_export(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/prepare-export resource.
         """
         PUT_OPCODE = opcodes.OpBackupPrepare
         def GetPutOpInput(self):
           """Prepares an export for an instance.
           """
           return ({}, {
             "instance_name": self.items[0],
             "mode": self._checkStringVariable("mode"),
             })
       class R_2_instances_name_export(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/export resource.
         """
         PUT_OPCODE = opcodes.OpBackupExport
         PUT_RENAME = {
           "destination": "target_node",
+          }
         def GetPutOpInput(self):
           """Exports an instance.
           """
           return (self.request_body, {
             "instance_name": self.items[0],
             })
       class R_2_instances_name_migrate(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/migrate resource.
         """
         PUT_OPCODE = opcodes.OpInstanceMigrate
         def GetPutOpInput(self):
           """Migrates an instance.
           """
           return (self.request_body, {
             "instance_name": self.items[0],
             })
       class R_2_instances_name_failover(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/failover resource.
         """
         PUT_OPCODE = opcodes.OpInstanceFailover
         def GetPutOpInput(self):
           """Does a failover of an instance.
           """
           return (self.request_body, {
             "instance_name": self.items[0],
             })
       class R_2_instances_name_rename(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/rename resource.
         """
         PUT_OPCODE = opcodes.OpInstanceRename
         def GetPutOpInput(self):
           """Changes the name of an instance.
           """
           return (self.request_body, {
             "instance_name": self.items[0],
             })
       class R_2_instances_name_modify(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/modify resource.
         """
         PUT_OPCODE = opcodes.OpInstanceSetParams
         def GetPutOpInput(self):
           """Changes parameters of an instance.
           """
           return (self.request_body, {
             "instance_name": self.items[0],
             })
       class R_2_instances_name_disk_grow(baserlib.OpcodeResource):
         """/2/instances/[instance_name]/disk/[disk_index]/grow resource.
         """
         POST_OPCODE = opcodes.OpInstanceGrowDisk
         def GetPostOpInput(self):
           """Increases the size of an instance disk.
           """
           return (self.request_body, {
             "instance_name": self.items[0],
             "disk": int(self.items[1]),
             })
       class R_2_instances_name_console(baserlib.ResourceBase):
         """/2/instances/[instance_name]/console resource.
         """
         GET_ACCESS = [rapi.RAPI_ACCESS_WRITE]
         def GET(self):
           """Request information for connecting to instance's console.
           @return: Serialized instance console description, see
                    L{objects.InstanceConsole}
           """
           client = self.GetClient()
           ((console, ), ) = client.QueryInstances([self.items[0]], ["console"], False)
           if console is None:
             raise http.HttpServiceUnavailable("Instance console unavailable")
           assert isinstance(console, dict)
           return console
       def _GetQueryFields(args):
         """
         """
         try:
           fields = args["fields"]
         except KeyError:
           raise http.HttpBadRequest("Missing 'fields' query argument")
         return _SplitQueryFields(fields[0])
       def _SplitQueryFields(fields):
         """
         """
         return [i.strip() for i in fields.split(",")]
       class R_2_query(baserlib.ResourceBase):
         """/2/query/[resource] resource.
         """
         # Results might contain sensitive information
         GET_ACCESS = [rapi.RAPI_ACCESS_WRITE]
         def _Query(self, fields, filter_):
           return self.GetClient().Query(self.items[0], fields, filter_).ToDict()
         def GET(self):
           """Returns resource information.
           @return: Query result, see L{objects.QueryResponse}
           """
           return self._Query(_GetQueryFields(self.queryargs), None)
         def PUT(self):
           """Submits job querying for resources.
           @return: Query result, see L{objects.QueryResponse}
           """
           body = self.request_body
           baserlib.CheckType(body, dict, "Body contents")
           try:
             fields = body["fields"]
           except KeyError:
             fields = _GetQueryFields(self.queryargs)
           return self._Query(fields, self.request_body.get("filter", None))
       class R_2_query_fields(baserlib.ResourceBase):
         """/2/query/[resource]/fields resource.
         """
         def GET(self):
           """Retrieves list of available fields for a resource.
           @return: List of serialized L{objects.QueryFieldDefinition}
           """
           try:
             raw_fields = self.queryargs["fields"]
           except KeyError:
             fields = None
           else:
             fields = _SplitQueryFields(raw_fields[0])
           return self.GetClient().QueryFields(self.items[0], fields).ToDict()
       class _R_Tags(baserlib.OpcodeResource):
         """ Quasiclass for tagging resources
         Manages tags. When inheriting this class you must define the
         TAG_LEVEL for it.
         """
         TAG_LEVEL = None
         PUT_OPCODE = opcodes.OpTagsSet
         DELETE_OPCODE = opcodes.OpTagsDel
         def __init__(self, items, queryargs, req, **kwargs):
           """A tag resource constructor.
           We have to override the default to sort out cluster naming case.
           """
           baserlib.OpcodeResource.__init__(self, items, queryargs, req, **kwargs)
           if self.TAG_LEVEL == constants.TAG_CLUSTER:
             self.name = None
           else:
             self.name = items[0]
         def GET(self):
           """Returns a list of tags.
           Example: ["tag1", "tag2", "tag3"]
           """
           kind = self.TAG_LEVEL
           if kind in (constants.TAG_INSTANCE,
                       constants.TAG_NODEGROUP,
                       constants.TAG_NODE):
             if not self.name:
               raise http.HttpBadRequest("Missing name on tag request")
             cl = self.GetClient()
             if kind == constants.TAG_INSTANCE:
               fn = cl.QueryInstances
             elif kind == constants.TAG_NODEGROUP:
               fn = cl.QueryGroups
             else:
               fn = cl.QueryNodes
             result = fn(names=[self.name], fields=["tags"], use_locking=False)
             if not result or not result[0]:
               raise http.HttpBadGateway("Invalid response from tag query")
             tags = result[0][0]
           elif kind == constants.TAG_CLUSTER:
             assert not self.name
             # TODO: Use query API?
             ssc = ssconf.SimpleStore()
             tags = ssc.GetClusterTags()
           return list(tags)
         def GetPutOpInput(self):
           """Add a set of tags.
           The request as a list of strings should be PUT to this URI. And
           you'll have back a job id.
           """
           return ({}, {
             "kind": self.TAG_LEVEL,
             "name": self.name,
             "tags": self.queryargs.get("tag", []),
             "dry_run": self.dryRun(),
             })
         def GetDeleteOpInput(self):
           """Delete a tag.
           In order to delete a set of tags, the DELETE
           request should be addressed to URI like:
           /tags?tag=[tag]&tag=[tag]
           """
           # Re-use code
           return self.GetPutOpInput()
       class R_2_instances_name_tags(_R_Tags):
         """ /2/instances/[instance_name]/tags resource.
         Manages per-instance tags.
         """
         TAG_LEVEL = constants.TAG_INSTANCE
       class R_2_nodes_name_tags(_R_Tags):
         """ /2/nodes/[node_name]/tags resource.
         Manages per-node tags.
         """
         TAG_LEVEL = constants.TAG_NODE
       class R_2_groups_name_tags(_R_Tags):
         """ /2/groups/[group_name]/tags resource.
         Manages per-nodegroup tags.
         """
         TAG_LEVEL = constants.TAG_NODEGROUP
       class R_2_tags(_R_Tags):
         """ /2/tags resource.
         Manages cluster tags.
         """
         TAG_LEVEL = constants.TAG_CLUSTER

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