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", "alloc_policy"]
37 #: headers (and full field list) for L{ListGroups}
39 "name": "Group", "uuid": "UUID", "alloc_policy": "AllocPolicy",
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 alloc_policy=opts.alloc_policy)
59 SubmitOpCode(op, opts=opts)
62 def ListGroups(opts, args):
63 """List node groups and their properties.
65 @param opts: the command line options selected by the user
67 @param args: groups to list, or empty for all
69 @return: the desired exit code
72 desired_fields = ParseFields(opts.output, _LIST_DEF_FIELDS)
74 output = GetClient().QueryGroups(args, desired_fields, opts.do_locking)
79 headers = _LIST_HEADERS
81 int_type_fields = frozenset(["node_cnt", "pinst_cnt", "serial_no"])
82 list_type_fields = frozenset(["node_list", "pinst_list"])
83 date_type_fields = frozenset(["mtime", "ctime"])
86 for idx, field in enumerate(desired_fields):
89 if field in list_type_fields:
91 elif opts.roman_integers and field in int_type_fields:
92 val = compat.TryToRoman(val)
93 elif field in date_type_fields:
94 val = utils.FormatTime(val)
100 data = GenerateTable(separator=opts.separator, headers=headers,
101 fields=desired_fields, data=output)
109 def SetGroupParams(opts, args):
110 """Modifies a node group's parameters.
112 @param opts: the command line options seletect by the user
114 @param args: should contain only one element, the node group name
117 @return: the desired exit code
121 "ndparams": opts.ndparams,
122 "alloc_policy": opts.alloc_policy,
125 if all_changes.values().count(None) == len(all_changes):
126 ToStderr("Please give at least one of the parameters.")
129 op = opcodes.OpSetGroupParams(group_name=args[0], # pylint: disable-msg=W0142
131 result = SubmitOrSend(op, opts)
134 ToStdout("Modified node group %s", args[0])
135 for param, data in result:
136 ToStdout(" - %-5s -> %s", param, data)
141 def RemoveGroup(opts, args):
142 """Remove a node group from the cluster.
144 @param opts: the command line options selected by the user
146 @param args: a list of length 1 with the name of the group to remove
148 @return: the desired exit code
152 op = opcodes.OpRemoveGroup(group_name=group_name)
153 SubmitOpCode(op, opts=opts)
156 def RenameGroup(opts, args):
157 """Rename a node group.
159 @param opts: the command line options selected by the user
161 @param args: a list of length 2, [old_name, new_name]
163 @return: the desired exit code
166 old_name, new_name = args
167 op = opcodes.OpRenameGroup(old_name=old_name, new_name=new_name)
168 SubmitOpCode(op, opts=opts)
173 AddGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT],
174 "<group_name>", "Add a new node group to the cluster"),
176 ListGroups, ARGS_MANY_GROUPS,
177 [NOHDR_OPT, SEP_OPT, FIELDS_OPT, SYNC_OPT, ROMAN_OPT],
179 "Lists the node groups in the cluster. The available fields are (see"
180 " the man page for details): %s. The default list is (in order): %s." %
181 (utils.CommaJoin(_LIST_HEADERS), utils.CommaJoin(_LIST_DEF_FIELDS))),
183 SetGroupParams, ARGS_ONE_GROUP,
184 [DRY_RUN_OPT, SUBMIT_OPT, ALLOC_POLICY_OPT, NODE_PARAMS_OPT],
185 "<group_name>", "Alters the parameters of a node group"),
187 RemoveGroup, ARGS_ONE_GROUP, [DRY_RUN_OPT],
188 "[--dry-run] <group_name>",
189 "Remove an (empty) node group from the cluster"),
191 RenameGroup, [ArgGroup(min=2, max=2)], [DRY_RUN_OPT],
192 "[--dry-run] <old_name> <new_name>", "Rename a node group"),
197 return GenericMain(commands)