Statistics
| Branch: | Tag: | Revision:

root / lib / opcodes.py @ 246e180a

History | View | Annotate | Download (6.4 kB)

1
#!/usr/bin/python
2
#
3

    
4
# Copyright (C) 2006, 2007 Google Inc.
5
#
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.
10
#
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.
15
#
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
19
# 02110-1301, USA.
20

    
21

    
22
"""OpCodes module
23

24
This module implements the data structures which define the cluster
25
operations - the so-called opcodes.
26

27

28
This module implements the logic for doing operations in the cluster. There
29
are two kinds of classes defined:
30
  - opcodes, which are small classes only holding data for the task at hand
31
  - logical units, which know how to deal with their specific opcode only
32

33
"""
34

    
35
# this are practically structures, so disable the message about too
36
# few public methods:
37
# pylint: disable-msg=R0903
38

    
39
class OpCode(object):
40
  """Abstract OpCode"""
41
  OP_ID = "OP_ABSTRACT"
42
  __slots__ = []
43

    
44
  def __init__(self, **kwargs):
45
    for key in kwargs:
46
      if key not in self.__slots__:
47
        raise TypeError("OpCode %s doesn't support the parameter '%s'" %
48
                        (self.__class__.__name__, key))
49
      setattr(self, key, kwargs[key])
50

    
51

    
52
class OpInitCluster(OpCode):
53
  """Initialise the cluster."""
54
  OP_ID = "OP_CLUSTER_INIT"
55
  __slots__ = ["cluster_name", "secondary_ip", "hypervisor_type",
56
               "vg_name", "mac_prefix", "def_bridge", "master_netdev"]
57

    
58

    
59
class OpDestroyCluster(OpCode):
60
  """Destroy the cluster."""
61
  OP_ID = "OP_CLUSTER_DESTROY"
62
  __slots__ = []
63

    
64

    
65
class OpQueryClusterInfo(OpCode):
66
  """Query cluster information."""
67
  OP_ID = "OP_CLUSTER_QUERY"
68
  __slots__ = []
69

    
70

    
71
class OpClusterCopyFile(OpCode):
72
  """Copy a file to multiple nodes."""
73
  OP_ID = "OP_CLUSTER_COPYFILE"
74
  __slots__ = ["nodes", "filename"]
75

    
76

    
77
class OpRunClusterCommand(OpCode):
78
  """Run a command on multiple nodes."""
79
  OP_ID = "OP_CLUSTER_RUNCOMMAND"
80
  __slots__ = ["nodes", "command"]
81

    
82

    
83
class OpVerifyCluster(OpCode):
84
  """Verify the cluster state."""
85
  OP_ID = "OP_CLUSTER_VERIFY"
86
  __slots__ = []
87

    
88

    
89
class OpMasterFailover(OpCode):
90
  """Do a master failover."""
91
  OP_ID = "OP_CLUSTER_MASTERFAILOVER"
92
  __slots__ = []
93

    
94

    
95
class OpDumpClusterConfig(OpCode):
96
  """Dump the cluster configuration."""
97
  OP_ID = "OP_CLUSTER_DUMPCONFIG"
98
  __slots__ = []
99

    
100

    
101
class OpRemoveNode(OpCode):
102
  """Remove a node."""
103
  OP_ID = "OP_NODE_REMOVE"
104
  __slots__ = ["node_name"]
105

    
106

    
107
class OpAddNode(OpCode):
108
  """Add a node."""
109
  OP_ID = "OP_NODE_ADD"
110
  __slots__ = ["node_name", "primary_ip", "secondary_ip"]
111

    
112

    
113
class OpQueryNodes(OpCode):
114
  """Compute the list of nodes."""
115
  OP_ID = "OP_NODE_QUERY"
116
  __slots__ = ["output_fields", "names"]
117

    
118

    
119
class OpQueryNodeVolumes(OpCode):
120
  """Get list of volumes on node."""
121
  OP_ID = "OP_NODE_QUERYVOLS"
122
  __slots__ = ["nodes", "output_fields"]
123

    
124

    
125
# instance opcodes
126

    
127
class OpCreateInstance(OpCode):
128
  """Create an instance."""
129
  OP_ID = "OP_INSTANCE_CREATE"
130
  __slots__ = ["instance_name", "mem_size", "disk_size", "os_type", "pnode",
131
               "disk_template", "snode", "swap_size", "mode",
132
               "vcpus", "ip", "bridge", "src_node", "src_path", "start",
133
               "wait_for_sync"]
134

    
135

    
136
class OpReinstallInstance(OpCode):
137
  """Reinstall an instance's OS."""
138
  OP_ID = "OP_INSTANCE_REINSTALL"
139
  __slots__ = ["instance_name", "os_type"]
140

    
141

    
142
class OpRemoveInstance(OpCode):
143
  """Remove an instance."""
144
  OP_ID = "OP_INSTANCE_REMOVE"
145
  __slots__ = ["instance_name"]
146

    
147

    
148
class OpStartupInstance(OpCode):
149
  """Startup an instance."""
150
  OP_ID = "OP_INSTANCE_STARTUP"
151
  __slots__ = ["instance_name", "force", "extra_args"]
152

    
153

    
154
class OpShutdownInstance(OpCode):
155
  """Shutdown an instance."""
156
  OP_ID = "OP_INSTANCE_SHUTDOWN"
157
  __slots__ = ["instance_name"]
158

    
159

    
160
class OpAddMDDRBDComponent(OpCode):
161
  """Add a MD-DRBD component."""
162
  OP_ID = "OP_INSTANCE_ADD_MDDRBD"
163
  __slots__ = ["instance_name", "remote_node", "disk_name"]
164

    
165

    
166
class OpRemoveMDDRBDComponent(OpCode):
167
  """Remove a MD-DRBD component."""
168
  OP_ID = "OP_INSTANCE_REMOVE_MDDRBD"
169
  __slots__ = ["instance_name", "disk_name", "disk_id"]
170

    
171

    
172
class OpReplaceDisks(OpCode):
173
  """Replace the disks of an instance."""
174
  OP_ID = "OP_INSTANCE_REPLACE_DISKS"
175
  __slots__ = ["instance_name", "remote_node"]
176

    
177

    
178
class OpFailoverInstance(OpCode):
179
  """Failover an instance."""
180
  OP_ID = "OP_INSTANCE_FAILOVER"
181
  __slots__ = ["instance_name", "ignore_consistency"]
182

    
183

    
184
class OpConnectConsole(OpCode):
185
  """Connect to an instance's console."""
186
  OP_ID = "OP_INSTANCE_CONSOLE"
187
  __slots__ = ["instance_name"]
188

    
189

    
190
class OpActivateInstanceDisks(OpCode):
191
  """Activate an instance's disks."""
192
  OP_ID = "OP_INSTANCE_ACTIVATE_DISKS"
193
  __slots__ = ["instance_name"]
194

    
195

    
196
class OpDeactivateInstanceDisks(OpCode):
197
  """Deactivate an instance's disks."""
198
  OP_ID = "OP_INSTANCE_DEACTIVATE_DISKS"
199
  __slots__ = ["instance_name"]
200

    
201

    
202
class OpQueryInstances(OpCode):
203
  """Compute the list of instances."""
204
  OP_ID = "OP_INSTANCE_QUERY"
205
  __slots__ = ["output_fields", "names"]
206

    
207

    
208
class OpQueryInstanceData(OpCode):
209
  """Compute the run-time status of instances."""
210
  OP_ID = "OP_INSTANCE_QUERY_DATA"
211
  __slots__ = ["instances"]
212

    
213

    
214
class OpSetInstanceParms(OpCode):
215
  """Change the parameters of an instance."""
216
  OP_ID = "OP_INSTANCE_SET_PARMS"
217
  __slots__ = ["instance_name", "mem", "vcpus", "ip", "bridge"]
218

    
219

    
220
# OS opcodes
221
class OpDiagnoseOS(OpCode):
222
  """Compute the list of guest operating systems."""
223
  OP_ID = "OP_OS_DIAGNOSE"
224
  __slots__ = []
225

    
226
# Exports opcodes
227
class OpQueryExports(OpCode):
228
  """Compute the list of exported images."""
229
  OP_ID = "OP_BACKUP_QUERY"
230
  __slots__ = ["nodes"]
231

    
232
class OpExportInstance(OpCode):
233
  """Export an instance."""
234
  OP_ID = "OP_BACKUP_EXPORT"
235
  __slots__ = ["instance_name", "target_node", "shutdown"]
236

    
237

    
238
# Tags opcodes
239
class OpGetTags(OpCode):
240
  """Returns the tags of the given object."""
241
  OP_ID = "OP_TAGS_GET"
242
  __slots__ = ["kind", "name"]
243

    
244

    
245
class OpSetTag(OpCode):
246
  """Sets the value of a tag on a given object."""
247
  OP_ID = "OP_TAGS_SET"
248
  __slots__ = ["kind", "name", "tag"]
249

    
250

    
251
class OpDelTag(OpCode):
252
  """Remove a tag from a given object."""
253
  OP_ID = "OP_TAGS_DEL"
254
  __slots__ = ["kind", "name", "tag"]