root / lib / mcpu.py @ fb8dcb62
History | View | Annotate | Download (12.2 kB)
1 | 2f31098c | Iustin Pop | #
|
---|---|---|---|
2 | a8083063 | Iustin Pop | #
|
3 | a8083063 | Iustin Pop | |
4 | a8083063 | Iustin Pop | # Copyright (C) 2006, 2007 Google Inc.
|
5 | a8083063 | Iustin Pop | #
|
6 | a8083063 | Iustin Pop | # This program is free software; you can redistribute it and/or modify
|
7 | a8083063 | Iustin Pop | # it under the terms of the GNU General Public License as published by
|
8 | a8083063 | Iustin Pop | # the Free Software Foundation; either version 2 of the License, or
|
9 | a8083063 | Iustin Pop | # (at your option) any later version.
|
10 | a8083063 | Iustin Pop | #
|
11 | a8083063 | Iustin Pop | # This program is distributed in the hope that it will be useful, but
|
12 | a8083063 | Iustin Pop | # WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | a8083063 | Iustin Pop | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | a8083063 | Iustin Pop | # General Public License for more details.
|
15 | a8083063 | Iustin Pop | #
|
16 | a8083063 | Iustin Pop | # You should have received a copy of the GNU General Public License
|
17 | a8083063 | Iustin Pop | # along with this program; if not, write to the Free Software
|
18 | a8083063 | Iustin Pop | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 | a8083063 | Iustin Pop | # 02110-1301, USA.
|
20 | a8083063 | Iustin Pop | |
21 | a8083063 | Iustin Pop | |
22 | a8083063 | Iustin Pop | """Module implementing the logic behind the cluster operations
|
23 | a8083063 | Iustin Pop |
|
24 | a8083063 | Iustin Pop | This module implements the logic for doing operations in the cluster. There
|
25 | a8083063 | Iustin Pop | are two kinds of classes defined:
|
26 | a8083063 | Iustin Pop | - logical units, which know how to deal with their specific opcode only
|
27 | a8083063 | Iustin Pop | - the processor, which dispatches the opcodes to their logical units
|
28 | a8083063 | Iustin Pop |
|
29 | a8083063 | Iustin Pop | """
|
30 | a8083063 | Iustin Pop | |
31 | a8083063 | Iustin Pop | |
32 | a8083063 | Iustin Pop | from ganeti import opcodes |
33 | a8083063 | Iustin Pop | from ganeti import constants |
34 | a8083063 | Iustin Pop | from ganeti import errors |
35 | a8083063 | Iustin Pop | from ganeti import rpc |
36 | a8083063 | Iustin Pop | from ganeti import cmdlib |
37 | a8083063 | Iustin Pop | from ganeti import config |
38 | a8083063 | Iustin Pop | from ganeti import ssconf |
39 | 0fbbf897 | Iustin Pop | from ganeti import logger |
40 | 04864530 | Guido Trotter | from ganeti import locking |
41 | a8083063 | Iustin Pop | |
42 | 7c0d6283 | Michael Hanselmann | |
43 | a8083063 | Iustin Pop | class Processor(object): |
44 | a8083063 | Iustin Pop | """Object which runs OpCodes"""
|
45 | a8083063 | Iustin Pop | DISPATCH_TABLE = { |
46 | a8083063 | Iustin Pop | # Cluster
|
47 | a8083063 | Iustin Pop | opcodes.OpDestroyCluster: cmdlib.LUDestroyCluster, |
48 | a8083063 | Iustin Pop | opcodes.OpQueryClusterInfo: cmdlib.LUQueryClusterInfo, |
49 | a8083063 | Iustin Pop | opcodes.OpVerifyCluster: cmdlib.LUVerifyCluster, |
50 | a8083063 | Iustin Pop | opcodes.OpDumpClusterConfig: cmdlib.LUDumpClusterConfig, |
51 | 07bd8a51 | Iustin Pop | opcodes.OpRenameCluster: cmdlib.LURenameCluster, |
52 | f4d4e184 | Iustin Pop | opcodes.OpVerifyDisks: cmdlib.LUVerifyDisks, |
53 | 0cc05d44 | Manuel Franceschini | opcodes.OpSetClusterParams: cmdlib.LUSetClusterParams, |
54 | a8083063 | Iustin Pop | # node lu
|
55 | a8083063 | Iustin Pop | opcodes.OpAddNode: cmdlib.LUAddNode, |
56 | a8083063 | Iustin Pop | opcodes.OpQueryNodes: cmdlib.LUQueryNodes, |
57 | dcb93971 | Michael Hanselmann | opcodes.OpQueryNodeVolumes: cmdlib.LUQueryNodeVolumes, |
58 | a8083063 | Iustin Pop | opcodes.OpRemoveNode: cmdlib.LURemoveNode, |
59 | a8083063 | Iustin Pop | # instance lu
|
60 | a8083063 | Iustin Pop | opcodes.OpCreateInstance: cmdlib.LUCreateInstance, |
61 | fe7b0351 | Michael Hanselmann | opcodes.OpReinstallInstance: cmdlib.LUReinstallInstance, |
62 | a8083063 | Iustin Pop | opcodes.OpRemoveInstance: cmdlib.LURemoveInstance, |
63 | decd5f45 | Iustin Pop | opcodes.OpRenameInstance: cmdlib.LURenameInstance, |
64 | a8083063 | Iustin Pop | opcodes.OpActivateInstanceDisks: cmdlib.LUActivateInstanceDisks, |
65 | a8083063 | Iustin Pop | opcodes.OpShutdownInstance: cmdlib.LUShutdownInstance, |
66 | a8083063 | Iustin Pop | opcodes.OpStartupInstance: cmdlib.LUStartupInstance, |
67 | bf6929a2 | Alexander Schreiber | opcodes.OpRebootInstance: cmdlib.LURebootInstance, |
68 | a8083063 | Iustin Pop | opcodes.OpDeactivateInstanceDisks: cmdlib.LUDeactivateInstanceDisks, |
69 | a8083063 | Iustin Pop | opcodes.OpReplaceDisks: cmdlib.LUReplaceDisks, |
70 | a8083063 | Iustin Pop | opcodes.OpFailoverInstance: cmdlib.LUFailoverInstance, |
71 | a8083063 | Iustin Pop | opcodes.OpConnectConsole: cmdlib.LUConnectConsole, |
72 | a8083063 | Iustin Pop | opcodes.OpQueryInstances: cmdlib.LUQueryInstances, |
73 | a8083063 | Iustin Pop | opcodes.OpQueryInstanceData: cmdlib.LUQueryInstanceData, |
74 | 7767bbf5 | Manuel Franceschini | opcodes.OpSetInstanceParams: cmdlib.LUSetInstanceParams, |
75 | 8729e0d7 | Iustin Pop | opcodes.OpGrowDisk: cmdlib.LUGrowDisk, |
76 | a8083063 | Iustin Pop | # os lu
|
77 | a8083063 | Iustin Pop | opcodes.OpDiagnoseOS: cmdlib.LUDiagnoseOS, |
78 | a8083063 | Iustin Pop | # exports lu
|
79 | a8083063 | Iustin Pop | opcodes.OpQueryExports: cmdlib.LUQueryExports, |
80 | a8083063 | Iustin Pop | opcodes.OpExportInstance: cmdlib.LUExportInstance, |
81 | 9ac99fda | Guido Trotter | opcodes.OpRemoveExport: cmdlib.LURemoveExport, |
82 | 5c947f38 | Iustin Pop | # tags lu
|
83 | 5c947f38 | Iustin Pop | opcodes.OpGetTags: cmdlib.LUGetTags, |
84 | 73415719 | Iustin Pop | opcodes.OpSearchTags: cmdlib.LUSearchTags, |
85 | f27302fa | Iustin Pop | opcodes.OpAddTags: cmdlib.LUAddTags, |
86 | f27302fa | Iustin Pop | opcodes.OpDelTags: cmdlib.LUDelTags, |
87 | 06009e27 | Iustin Pop | # test lu
|
88 | 06009e27 | Iustin Pop | opcodes.OpTestDelay: cmdlib.LUTestDelay, |
89 | d61df03e | Iustin Pop | opcodes.OpTestAllocator: cmdlib.LUTestAllocator, |
90 | a8083063 | Iustin Pop | } |
91 | a8083063 | Iustin Pop | |
92 | f1048938 | Iustin Pop | def __init__(self, context): |
93 | a8083063 | Iustin Pop | """Constructor for Processor
|
94 | a8083063 | Iustin Pop |
|
95 | 1a8c0ce1 | Iustin Pop | Args:
|
96 | 1a8c0ce1 | Iustin Pop | - feedback_fn: the feedback function (taking one string) to be run when
|
97 | 1a8c0ce1 | Iustin Pop | interesting events are happening
|
98 | a8083063 | Iustin Pop | """
|
99 | 1c901d13 | Guido Trotter | self.context = context
|
100 | f1048938 | Iustin Pop | self._feedback_fn = None |
101 | 04864530 | Guido Trotter | self.exclusive_BGL = False |
102 | a8083063 | Iustin Pop | |
103 | 36c381d7 | Guido Trotter | def _ExecLU(self, lu): |
104 | 36c381d7 | Guido Trotter | """Logical Unit execution sequence.
|
105 | 36c381d7 | Guido Trotter |
|
106 | 36c381d7 | Guido Trotter | """
|
107 | 36c381d7 | Guido Trotter | write_count = self.context.cfg.write_count
|
108 | 36c381d7 | Guido Trotter | lu.CheckPrereq() |
109 | 36c381d7 | Guido Trotter | hm = HooksMaster(rpc.call_hooks_runner, self, lu)
|
110 | 36c381d7 | Guido Trotter | h_results = hm.RunPhase(constants.HOOKS_PHASE_PRE) |
111 | 36c381d7 | Guido Trotter | lu.HooksCallBack(constants.HOOKS_PHASE_PRE, h_results, |
112 | 36c381d7 | Guido Trotter | self._feedback_fn, None) |
113 | 36c381d7 | Guido Trotter | try:
|
114 | 36c381d7 | Guido Trotter | result = lu.Exec(self._feedback_fn)
|
115 | 36c381d7 | Guido Trotter | h_results = hm.RunPhase(constants.HOOKS_PHASE_POST) |
116 | 36c381d7 | Guido Trotter | result = lu.HooksCallBack(constants.HOOKS_PHASE_POST, h_results, |
117 | 36c381d7 | Guido Trotter | self._feedback_fn, result)
|
118 | 36c381d7 | Guido Trotter | finally:
|
119 | 36c381d7 | Guido Trotter | # FIXME: This needs locks if not lu_class.REQ_BGL
|
120 | 36c381d7 | Guido Trotter | if write_count != self.context.cfg.write_count: |
121 | 36c381d7 | Guido Trotter | hm.RunConfigUpdate() |
122 | 36c381d7 | Guido Trotter | |
123 | 36c381d7 | Guido Trotter | return result
|
124 | 36c381d7 | Guido Trotter | |
125 | 68adfdb2 | Guido Trotter | def _LockAndExecLU(self, lu, level): |
126 | 68adfdb2 | Guido Trotter | """Execute a Logical Unit, with the needed locks.
|
127 | 68adfdb2 | Guido Trotter |
|
128 | 68adfdb2 | Guido Trotter | This is a recursive function that starts locking the given level, and
|
129 | 68adfdb2 | Guido Trotter | proceeds up, till there are no more locks to acquire. Then it executes the
|
130 | 68adfdb2 | Guido Trotter | given LU and its opcodes.
|
131 | 68adfdb2 | Guido Trotter |
|
132 | 68adfdb2 | Guido Trotter | """
|
133 | 68adfdb2 | Guido Trotter | if level in lu.needed_locks: |
134 | fb8dcb62 | Guido Trotter | # This gives a chance to LUs to make last-minute changes after acquiring
|
135 | fb8dcb62 | Guido Trotter | # locks at any preceding level.
|
136 | fb8dcb62 | Guido Trotter | lu.DeclareLocks(level) |
137 | 68adfdb2 | Guido Trotter | # This is always safe to do, as we can't acquire more/less locks than
|
138 | 68adfdb2 | Guido Trotter | # what was requested.
|
139 | 68adfdb2 | Guido Trotter | lu.needed_locks[level] = self.context.glm.acquire(level,
|
140 | 68adfdb2 | Guido Trotter | lu.needed_locks[level]) |
141 | 68adfdb2 | Guido Trotter | try:
|
142 | 68adfdb2 | Guido Trotter | result = self._LockAndExecLU(lu, level + 1) |
143 | 68adfdb2 | Guido Trotter | finally:
|
144 | 68adfdb2 | Guido Trotter | if lu.needed_locks[level]:
|
145 | 68adfdb2 | Guido Trotter | self.context.glm.release(level)
|
146 | 68adfdb2 | Guido Trotter | else:
|
147 | 68adfdb2 | Guido Trotter | result = self._ExecLU(lu)
|
148 | 68adfdb2 | Guido Trotter | |
149 | 68adfdb2 | Guido Trotter | return result
|
150 | 68adfdb2 | Guido Trotter | |
151 | f1048938 | Iustin Pop | def ExecOpCode(self, op, feedback_fn): |
152 | a8083063 | Iustin Pop | """Execute an opcode.
|
153 | a8083063 | Iustin Pop |
|
154 | a8083063 | Iustin Pop | Args:
|
155 | c99a3cc0 | Manuel Franceschini | op: the opcode to be executed
|
156 | a8083063 | Iustin Pop |
|
157 | a8083063 | Iustin Pop | """
|
158 | a8083063 | Iustin Pop | if not isinstance(op, opcodes.OpCode): |
159 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Non-opcode instance passed" |
160 | 3ecf6786 | Iustin Pop | " to ExecOpcode")
|
161 | a8083063 | Iustin Pop | |
162 | f1048938 | Iustin Pop | self._feedback_fn = feedback_fn
|
163 | a8083063 | Iustin Pop | lu_class = self.DISPATCH_TABLE.get(op.__class__, None) |
164 | a8083063 | Iustin Pop | if lu_class is None: |
165 | 3ecf6786 | Iustin Pop | raise errors.OpCodeUnknown("Unknown opcode") |
166 | a8083063 | Iustin Pop | |
167 | c6868e1d | Guido Trotter | if lu_class.REQ_WSSTORE:
|
168 | c6868e1d | Guido Trotter | sstore = ssconf.WritableSimpleStore() |
169 | c6868e1d | Guido Trotter | else:
|
170 | c6868e1d | Guido Trotter | sstore = ssconf.SimpleStore() |
171 | c6868e1d | Guido Trotter | |
172 | 04864530 | Guido Trotter | # Acquire the Big Ganeti Lock exclusively if this LU requires it, and in a
|
173 | 04864530 | Guido Trotter | # shared fashion otherwise (to prevent concurrent run with an exclusive LU.
|
174 | 984f7c32 | Guido Trotter | self.context.glm.acquire(locking.LEVEL_CLUSTER, [locking.BGL],
|
175 | 04864530 | Guido Trotter | shared=not lu_class.REQ_BGL)
|
176 | fe482621 | Iustin Pop | try:
|
177 | 04864530 | Guido Trotter | self.exclusive_BGL = lu_class.REQ_BGL
|
178 | 77b657a3 | Guido Trotter | lu = lu_class(self, op, self.context, sstore) |
179 | d465bdc8 | Guido Trotter | lu.ExpandNames() |
180 | 68adfdb2 | Guido Trotter | assert lu.needed_locks is not None, "needed_locks not set by LU" |
181 | 04e1bfaf | Guido Trotter | result = self._LockAndExecLU(lu, locking.LEVEL_INSTANCE)
|
182 | 04864530 | Guido Trotter | finally:
|
183 | 984f7c32 | Guido Trotter | self.context.glm.release(locking.LEVEL_CLUSTER)
|
184 | 04864530 | Guido Trotter | self.exclusive_BGL = False |
185 | 6a4aa7c1 | Iustin Pop | |
186 | a8083063 | Iustin Pop | return result
|
187 | a8083063 | Iustin Pop | |
188 | 1a8c0ce1 | Iustin Pop | def ChainOpCode(self, op): |
189 | a8083063 | Iustin Pop | """Chain and execute an opcode.
|
190 | a8083063 | Iustin Pop |
|
191 | a8083063 | Iustin Pop | This is used by LUs when they need to execute a child LU.
|
192 | a8083063 | Iustin Pop |
|
193 | a8083063 | Iustin Pop | Args:
|
194 | a8083063 | Iustin Pop | - opcode: the opcode to be executed
|
195 | a8083063 | Iustin Pop |
|
196 | a8083063 | Iustin Pop | """
|
197 | a8083063 | Iustin Pop | if not isinstance(op, opcodes.OpCode): |
198 | 3ecf6786 | Iustin Pop | raise errors.ProgrammerError("Non-opcode instance passed" |
199 | 3ecf6786 | Iustin Pop | " to ExecOpcode")
|
200 | a8083063 | Iustin Pop | |
201 | a8083063 | Iustin Pop | lu_class = self.DISPATCH_TABLE.get(op.__class__, None) |
202 | a8083063 | Iustin Pop | if lu_class is None: |
203 | 3ecf6786 | Iustin Pop | raise errors.OpCodeUnknown("Unknown opcode") |
204 | a8083063 | Iustin Pop | |
205 | 04864530 | Guido Trotter | if lu_class.REQ_BGL and not self.exclusive_BGL: |
206 | 04864530 | Guido Trotter | raise errors.ProgrammerError("LUs which require the BGL cannot" |
207 | 04864530 | Guido Trotter | " be chained to granular ones.")
|
208 | 04864530 | Guido Trotter | |
209 | c6868e1d | Guido Trotter | if lu_class.REQ_WSSTORE:
|
210 | c6868e1d | Guido Trotter | sstore = ssconf.WritableSimpleStore() |
211 | c6868e1d | Guido Trotter | else:
|
212 | c6868e1d | Guido Trotter | sstore = ssconf.SimpleStore() |
213 | c6868e1d | Guido Trotter | |
214 | f97a6b10 | Iustin Pop | #do_hooks = lu_class.HPATH is not None
|
215 | 77b657a3 | Guido Trotter | lu = lu_class(self, op, self.context, sstore) |
216 | a8083063 | Iustin Pop | lu.CheckPrereq() |
217 | a8083063 | Iustin Pop | #if do_hooks:
|
218 | 2395c322 | Iustin Pop | # hm = HooksMaster(rpc.call_hooks_runner, self, lu)
|
219 | 1fce5219 | Guido Trotter | # h_results = hm.RunPhase(constants.HOOKS_PHASE_PRE)
|
220 | 1fce5219 | Guido Trotter | # lu.HooksCallBack(constants.HOOKS_PHASE_PRE,
|
221 | 1fce5219 | Guido Trotter | # h_results, self._feedback_fn, None)
|
222 | 1a8c0ce1 | Iustin Pop | result = lu.Exec(self._feedback_fn)
|
223 | a8083063 | Iustin Pop | #if do_hooks:
|
224 | 1fce5219 | Guido Trotter | # h_results = hm.RunPhase(constants.HOOKS_PHASE_POST)
|
225 | 1fce5219 | Guido Trotter | # result = lu.HooksCallBack(constants.HOOKS_PHASE_POST,
|
226 | 1fce5219 | Guido Trotter | # h_results, self._feedback_fn, result)
|
227 | a8083063 | Iustin Pop | return result
|
228 | a8083063 | Iustin Pop | |
229 | 0fbbf897 | Iustin Pop | def LogStep(self, current, total, message): |
230 | 0fbbf897 | Iustin Pop | """Log a change in LU execution progress.
|
231 | 0fbbf897 | Iustin Pop |
|
232 | 0fbbf897 | Iustin Pop | """
|
233 | 0fbbf897 | Iustin Pop | logger.Debug("Step %d/%d %s" % (current, total, message))
|
234 | 0fbbf897 | Iustin Pop | self._feedback_fn("STEP %d/%d %s" % (current, total, message)) |
235 | 0fbbf897 | Iustin Pop | |
236 | 5bfac263 | Iustin Pop | def LogWarning(self, message, hint=None): |
237 | 0fbbf897 | Iustin Pop | """Log a warning to the logs and the user.
|
238 | 0fbbf897 | Iustin Pop |
|
239 | 0fbbf897 | Iustin Pop | """
|
240 | 0fbbf897 | Iustin Pop | logger.Error(message) |
241 | 0fbbf897 | Iustin Pop | self._feedback_fn(" - WARNING: %s" % message) |
242 | 5bfac263 | Iustin Pop | if hint:
|
243 | 5bfac263 | Iustin Pop | self._feedback_fn(" Hint: %s" % hint) |
244 | 0fbbf897 | Iustin Pop | |
245 | 0fbbf897 | Iustin Pop | def LogInfo(self, message): |
246 | 0fbbf897 | Iustin Pop | """Log an informational message to the logs and the user.
|
247 | 0fbbf897 | Iustin Pop |
|
248 | 0fbbf897 | Iustin Pop | """
|
249 | 0fbbf897 | Iustin Pop | logger.Info(message) |
250 | 0fbbf897 | Iustin Pop | self._feedback_fn(" - INFO: %s" % message) |
251 | 0fbbf897 | Iustin Pop | |
252 | a8083063 | Iustin Pop | |
253 | a8083063 | Iustin Pop | class HooksMaster(object): |
254 | a8083063 | Iustin Pop | """Hooks master.
|
255 | a8083063 | Iustin Pop |
|
256 | a8083063 | Iustin Pop | This class distributes the run commands to the nodes based on the
|
257 | a8083063 | Iustin Pop | specific LU class.
|
258 | a8083063 | Iustin Pop |
|
259 | a8083063 | Iustin Pop | In order to remove the direct dependency on the rpc module, the
|
260 | a8083063 | Iustin Pop | constructor needs a function which actually does the remote
|
261 | a8083063 | Iustin Pop | call. This will usually be rpc.call_hooks_runner, but any function
|
262 | a8083063 | Iustin Pop | which behaves the same works.
|
263 | a8083063 | Iustin Pop |
|
264 | a8083063 | Iustin Pop | """
|
265 | 2395c322 | Iustin Pop | def __init__(self, callfn, proc, lu): |
266 | a8083063 | Iustin Pop | self.callfn = callfn
|
267 | 2395c322 | Iustin Pop | self.proc = proc
|
268 | a8083063 | Iustin Pop | self.lu = lu
|
269 | a8083063 | Iustin Pop | self.op = lu.op
|
270 | a8083063 | Iustin Pop | self.env, node_list_pre, node_list_post = self._BuildEnv() |
271 | a8083063 | Iustin Pop | self.node_list = {constants.HOOKS_PHASE_PRE: node_list_pre,
|
272 | a8083063 | Iustin Pop | constants.HOOKS_PHASE_POST: node_list_post} |
273 | a8083063 | Iustin Pop | |
274 | a8083063 | Iustin Pop | def _BuildEnv(self): |
275 | a8083063 | Iustin Pop | """Compute the environment and the target nodes.
|
276 | a8083063 | Iustin Pop |
|
277 | a8083063 | Iustin Pop | Based on the opcode and the current node list, this builds the
|
278 | a8083063 | Iustin Pop | environment for the hooks and the target node list for the run.
|
279 | a8083063 | Iustin Pop |
|
280 | a8083063 | Iustin Pop | """
|
281 | a8083063 | Iustin Pop | env = { |
282 | a8083063 | Iustin Pop | "PATH": "/sbin:/bin:/usr/sbin:/usr/bin", |
283 | a8083063 | Iustin Pop | "GANETI_HOOKS_VERSION": constants.HOOKS_VERSION,
|
284 | a8083063 | Iustin Pop | "GANETI_OP_CODE": self.op.OP_ID, |
285 | a8083063 | Iustin Pop | "GANETI_OBJECT_TYPE": self.lu.HTYPE, |
286 | 6a4aa7c1 | Iustin Pop | "GANETI_DATA_DIR": constants.DATA_DIR,
|
287 | a8083063 | Iustin Pop | } |
288 | a8083063 | Iustin Pop | |
289 | 9a395a76 | Iustin Pop | if self.lu.HPATH is not None: |
290 | 9a395a76 | Iustin Pop | lu_env, lu_nodes_pre, lu_nodes_post = self.lu.BuildHooksEnv()
|
291 | 9a395a76 | Iustin Pop | if lu_env:
|
292 | 9a395a76 | Iustin Pop | for key in lu_env: |
293 | 9a395a76 | Iustin Pop | env["GANETI_" + key] = lu_env[key]
|
294 | 9a395a76 | Iustin Pop | else:
|
295 | 9a395a76 | Iustin Pop | lu_nodes_pre = lu_nodes_post = [] |
296 | a8083063 | Iustin Pop | |
297 | 4167825b | Iustin Pop | return env, frozenset(lu_nodes_pre), frozenset(lu_nodes_post) |
298 | 4167825b | Iustin Pop | |
299 | 4167825b | Iustin Pop | def _RunWrapper(self, node_list, hpath, phase): |
300 | 4167825b | Iustin Pop | """Simple wrapper over self.callfn.
|
301 | 4167825b | Iustin Pop |
|
302 | 4167825b | Iustin Pop | This method fixes the environment before doing the rpc call.
|
303 | 4167825b | Iustin Pop |
|
304 | 4167825b | Iustin Pop | """
|
305 | 4167825b | Iustin Pop | env = self.env.copy()
|
306 | 4167825b | Iustin Pop | env["GANETI_HOOKS_PHASE"] = phase
|
307 | 4167825b | Iustin Pop | env["GANETI_HOOKS_PATH"] = hpath
|
308 | f97a6b10 | Iustin Pop | if self.lu.sstore is not None: |
309 | f97a6b10 | Iustin Pop | env["GANETI_CLUSTER"] = self.lu.sstore.GetClusterName() |
310 | f97a6b10 | Iustin Pop | env["GANETI_MASTER"] = self.lu.sstore.GetMasterNode() |
311 | a8083063 | Iustin Pop | |
312 | 4167825b | Iustin Pop | env = dict([(str(key), str(val)) for key, val in env.iteritems()]) |
313 | a8083063 | Iustin Pop | |
314 | 4167825b | Iustin Pop | return self.callfn(node_list, hpath, phase, env) |
315 | a8083063 | Iustin Pop | |
316 | a8083063 | Iustin Pop | def RunPhase(self, phase): |
317 | a8083063 | Iustin Pop | """Run all the scripts for a phase.
|
318 | a8083063 | Iustin Pop |
|
319 | a8083063 | Iustin Pop | This is the main function of the HookMaster.
|
320 | a8083063 | Iustin Pop |
|
321 | b07a6922 | Guido Trotter | Args:
|
322 | b07a6922 | Guido Trotter | phase: the hooks phase to run
|
323 | b07a6922 | Guido Trotter |
|
324 | b07a6922 | Guido Trotter | Returns:
|
325 | b07a6922 | Guido Trotter | the result of the hooks multi-node rpc call
|
326 | b07a6922 | Guido Trotter |
|
327 | a8083063 | Iustin Pop | """
|
328 | a8083063 | Iustin Pop | if not self.node_list[phase]: |
329 | 9a395a76 | Iustin Pop | # empty node list, we should not attempt to run this as either
|
330 | 9a395a76 | Iustin Pop | # we're in the cluster init phase and the rpc client part can't
|
331 | 9a395a76 | Iustin Pop | # even attempt to run, or this LU doesn't do hooks at all
|
332 | a8083063 | Iustin Pop | return
|
333 | 4167825b | Iustin Pop | hpath = self.lu.HPATH
|
334 | 4167825b | Iustin Pop | results = self._RunWrapper(self.node_list[phase], hpath, phase) |
335 | a8083063 | Iustin Pop | if phase == constants.HOOKS_PHASE_PRE:
|
336 | a8083063 | Iustin Pop | errs = [] |
337 | a8083063 | Iustin Pop | if not results: |
338 | 3ecf6786 | Iustin Pop | raise errors.HooksFailure("Communication failure") |
339 | a8083063 | Iustin Pop | for node_name in results: |
340 | a8083063 | Iustin Pop | res = results[node_name] |
341 | a8083063 | Iustin Pop | if res is False or not isinstance(res, list): |
342 | 2395c322 | Iustin Pop | self.proc.LogWarning("Communication failure to node %s" % node_name) |
343 | 2395c322 | Iustin Pop | continue
|
344 | a8083063 | Iustin Pop | for script, hkr, output in res: |
345 | a8083063 | Iustin Pop | if hkr == constants.HKR_FAIL:
|
346 | a8083063 | Iustin Pop | output = output.strip().encode("string_escape")
|
347 | a8083063 | Iustin Pop | errs.append((node_name, script, output)) |
348 | a8083063 | Iustin Pop | if errs:
|
349 | 3ecf6786 | Iustin Pop | raise errors.HooksAbort(errs)
|
350 | b07a6922 | Guido Trotter | return results
|
351 | 6a4aa7c1 | Iustin Pop | |
352 | 6a4aa7c1 | Iustin Pop | def RunConfigUpdate(self): |
353 | 6a4aa7c1 | Iustin Pop | """Run the special configuration update hook
|
354 | 6a4aa7c1 | Iustin Pop |
|
355 | 6a4aa7c1 | Iustin Pop | This is a special hook that runs only on the master after each
|
356 | 6a4aa7c1 | Iustin Pop | top-level LI if the configuration has been updated.
|
357 | 6a4aa7c1 | Iustin Pop |
|
358 | 6a4aa7c1 | Iustin Pop | """
|
359 | 6a4aa7c1 | Iustin Pop | phase = constants.HOOKS_PHASE_POST |
360 | 6a4aa7c1 | Iustin Pop | hpath = constants.HOOKS_NAME_CFGUPDATE |
361 | 6a4aa7c1 | Iustin Pop | if self.lu.sstore is None: |
362 | 6a4aa7c1 | Iustin Pop | raise errors.ProgrammerError("Null sstore on config update hook") |
363 | 6a4aa7c1 | Iustin Pop | nodes = [self.lu.sstore.GetMasterNode()]
|
364 | 6a4aa7c1 | Iustin Pop | results = self._RunWrapper(nodes, hpath, phase) |