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 compat
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"]
37 #: headers (and full field list) for L{ListGroups}
39 "name": "Group", "uuid": "UUID",
40 "node_cnt": "Nodes", "node_list": "NodeList",
41 "pinst_cnt": "Instances", "pinst_list": "InstanceList",
42 "ctime": "CTime", "mtime": "MTime", "serial_no": "SerialNo",
46 def AddGroup(opts, args):
47 """Add a node group to the cluster.
49 @param opts: the command line options selected by the user
51 @param args: a list of length 1 with the name of the group to create
53 @return: the desired exit code
57 op = opcodes.OpAddGroup(group_name=group_name, ndparams=opts.ndparams)
58 SubmitOpCode(op, opts=opts)
61 def ListGroups(opts, args):
62 """List node groups and their properties.
64 @param opts: the command line options selected by the user
66 @param args: groups to list, or empty for all
68 @return: the desired exit code
71 desired_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)
73 output = GetClient().QueryGroups(args, desired_fields, opts.do_locking)
78 headers = _LIST_HEADERS
80 int_type_fields = frozenset(["node_cnt", "pinst_cnt", "serial_no"])
81 list_type_fields = frozenset(["node_list", "pinst_list"])
82 date_type_fields = frozenset(["mtime", "ctime"])
85 for idx, field in enumerate(desired_fields):
88 if field in list_type_fields:
90 elif opts.roman_integers and field in int_type_fields:
91 val = compat.TryToRoman(val)
92 elif field in date_type_fields:
93 val = utils.FormatTime(val)
99 data = GenerateTable(separator=opts.separator, headers=headers,
100 fields=desired_fields, data=output)
108 def SetGroupParams(opts, args):
109 """Modifies a node group's parameters.
111 @param opts: the command line options seletect by the user
113 @param args: should contain only one element, the node group name
116 @return: the desired exit code
120 "ndparams": opts.ndparams,
123 if all_changes.values().count(None) == len(all_changes):
124 ToStderr("Please give at least one of the parameters.")
127 op = opcodes.OpSetGroupParams(group_name=args[0], **all_changes)
128 result = SubmitOrSend(op, opts)
131 ToStdout("Modified node group %s", args[0])
132 for param, data in result:
133 ToStdout(" - %-5s -> %s", param, data)
138 def RemoveGroup(opts, args):
139 """Remove a node group from the cluster.
141 @param opts: the command line options selected by the user
143 @param args: a list of length 1 with the name of the group to remove
145 @return: the desired exit code
149 op = opcodes.OpRemoveGroup(group_name=group_name)
150 SubmitOpCode(op, opts=opts)
153 def RenameGroup(opts, args):
154 """Rename a node group.
156 @param opts: the command line options selected by the user
158 @param args: a list of length 2, [old_name, new_name]
160 @return: the desired exit code
163 old_name, new_name = args
164 op = opcodes.OpRenameGroup(old_name=old_name, new_name=new_name)
165 SubmitOpCode(op, opts=opts)
170 AddGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT, NODE_PARAMS_OPT],
171 "<group_name>", "Add a new node group to the cluster"),
173 ListGroups, ARGS_MANY_GROUPS,
174 [NOHDR_OPT, SEP_OPT, FIELDS_OPT, SYNC_OPT, ROMAN_OPT],
176 "Lists the node groups in the cluster. The available fields are (see"
177 " the man page for details): %s. The default list is (in order): %s." %
178 (utils.CommaJoin(_LIST_HEADERS), utils.CommaJoin(_LIST_DEF_FIELDS))),
180 SetGroupParams, ARGS_ONE_GROUP,
181 [DRY_RUN_OPT, SUBMIT_OPT, NODE_PARAMS_OPT],
182 "<group_name>", "Alters the parameters of a node group"),
184 RemoveGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT],
185 "[--dry-run] <group_name>",
186 "Remove an (empty) node group from the cluster"),
188 RenameGroup, [ArgGroup(min=2, max=2)], [DRY_RUN_OPT],
189 "[--dry-run] <old_name> <new_name>", "Rename a node group"),
194 return GenericMain(commands)