4 # Copyright (C) 2010 Google Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 """Node group related commands"""
23 # pylint: disable-msg=W0401,W0614
24 # W0401: Wildcard import ganeti.cli
25 # W0614: Unused import %s from wildcard import (since we need cli)
27 from ganeti.cli import *
28 from ganeti import constants
29 from ganeti import opcodes
30 from ganeti import utils
33 #: default list of fields for L{ListGroups}
34 _LIST_DEF_FIELDS = ["name", "node_cnt", "pinst_cnt", "alloc_policy", "ndparams"]
37 def AddGroup(opts, args):
38 """Add a node group to the cluster.
40 @param opts: the command line options selected by the user
42 @param args: a list of length 1 with the name of the group to create
44 @return: the desired exit code
48 op = opcodes.OpAddGroup(group_name=group_name, ndparams=opts.ndparams,
49 alloc_policy=opts.alloc_policy)
50 SubmitOpCode(op, opts=opts)
53 def AssignNodes(opts, args):
54 """Assign nodes to a group.
56 @param opts: the command line options selected by the user
58 @param args: args[0]: group to assign nodes to; args[1:]: nodes to assign
60 @return: the desired exit code
66 op = opcodes.OpAssignGroupNodes(group_name=group_name, nodes=node_names,
68 SubmitOpCode(op, opts=opts)
72 """Format dict data into command-line format.
74 @param data: The input dict to be formatted
75 @return: The formatted dict
81 return utils.CommaJoin(["%s=%s" % (key, value)
82 for key, value in data.items()])
85 def ListGroups(opts, args):
86 """List node groups and their properties.
88 @param opts: the command line options selected by the user
90 @param args: groups to list, or empty for all
92 @return: the desired exit code
95 desired_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)
97 "node_list": (",".join, False),
98 "pinst_list": (",".join, False),
99 "ndparams": (_FmtDict, False),
102 return GenericList(constants.QR_GROUP, desired_fields, args, None,
103 opts.separator, not opts.no_headers,
104 format_override=fmtoverride)
107 def ListGroupFields(opts, args):
110 @param opts: the command line options selected by the user
112 @param args: fields to list, or empty for all
114 @return: the desired exit code
117 return GenericListFields(constants.QR_GROUP, args, opts.separator,
121 def SetGroupParams(opts, args):
122 """Modifies a node group's parameters.
124 @param opts: the command line options seletect by the user
126 @param args: should contain only one element, the node group name
129 @return: the desired exit code
133 "ndparams": opts.ndparams,
134 "alloc_policy": opts.alloc_policy,
137 if all_changes.values().count(None) == len(all_changes):
138 ToStderr("Please give at least one of the parameters.")
141 op = opcodes.OpSetGroupParams(group_name=args[0], # pylint: disable-msg=W0142
143 result = SubmitOrSend(op, opts)
146 ToStdout("Modified node group %s", args[0])
147 for param, data in result:
148 ToStdout(" - %-5s -> %s", param, data)
153 def RemoveGroup(opts, args):
154 """Remove a node group from the cluster.
156 @param opts: the command line options selected by the user
158 @param args: a list of length 1 with the name of the group to remove
160 @return: the desired exit code
164 op = opcodes.OpRemoveGroup(group_name=group_name)
165 SubmitOpCode(op, opts=opts)
168 def RenameGroup(opts, args):
169 """Rename a node group.
171 @param opts: the command line options selected by the user
173 @param args: a list of length 2, [old_name, new_name]
175 @return: the desired exit code
178 old_name, new_name = args
179 op = opcodes.OpRenameGroup(old_name=old_name, new_name=new_name)
180 SubmitOpCode(op, opts=opts)
185 AddGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT],
186 "<group_name>", "Add a new node group to the cluster"),
188 AssignNodes, ARGS_ONE_GROUP + ARGS_MANY_NODES, [DRY_RUN_OPT, FORCE_OPT],
189 "<group_name> <node>...", "Assign nodes to a group"),
191 ListGroups, ARGS_MANY_GROUPS,
192 [NOHDR_OPT, SEP_OPT, FIELDS_OPT],
194 "Lists the node groups in the cluster. The available fields can be shown"
195 " using the \"list-fields\" command (see the man page for details)."
196 " The default list is (in order): %s." % utils.CommaJoin(_LIST_DEF_FIELDS)),
198 ListGroupFields, [ArgUnknown()], [NOHDR_OPT, SEP_OPT], "[fields...]",
199 "Lists all available fields for node groups"),
201 SetGroupParams, ARGS_ONE_GROUP,
202 [DRY_RUN_OPT, SUBMIT_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT],
203 "<group_name>", "Alters the parameters of a node group"),
205 RemoveGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT],
206 "[--dry-run] <group_name>",
207 "Remove an (empty) node group from the cluster"),
209 RenameGroup, [ArgGroup(min=2, max=2)], [DRY_RUN_OPT],
210 "[--dry-run] <old_name> <new_name>", "Rename a node group"),
215 return GenericMain(commands)