#
#
-# Copyright (C) 2006, 2007 Google Inc.
+# Copyright (C) 2006, 2007, 2011 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
from ganeti import cmdlib
from ganeti import locking
from ganeti import utils
+from ganeti import compat
+
+
+_OP_PREFIX = "Op"
+_LU_PREFIX = "LU"
class LockAcquireTimeout(Exception):
"""
+def _LUNameForOpName(opname):
+ """Computes the LU name for a given OpCode name.
+
+ """
+ assert opname.startswith(_OP_PREFIX), \
+ "Invalid OpCode name, doesn't start with %s: %s" % (_OP_PREFIX, opname)
+
+ return _LU_PREFIX + opname[len(_OP_PREFIX):]
+
+
+def _ComputeDispatchTable():
+ """Computes the opcode-to-lu dispatch table.
+
+ """
+ return dict((op, getattr(cmdlib, _LUNameForOpName(op.__name__)))
+ for op in opcodes.OP_MAPPING.values()
+ if op.WITH_LU)
+
+
class Processor(object):
"""Object which runs OpCodes"""
- DISPATCH_TABLE = {
- # Cluster
- opcodes.OpPostInitCluster: cmdlib.LUPostInitCluster,
- opcodes.OpDestroyCluster: cmdlib.LUDestroyCluster,
- opcodes.OpQueryClusterInfo: cmdlib.LUQueryClusterInfo,
- opcodes.OpVerifyCluster: cmdlib.LUVerifyCluster,
- opcodes.OpQueryConfigValues: cmdlib.LUQueryConfigValues,
- opcodes.OpRenameCluster: cmdlib.LURenameCluster,
- opcodes.OpVerifyDisks: cmdlib.LUVerifyDisks,
- opcodes.OpSetClusterParams: cmdlib.LUSetClusterParams,
- opcodes.OpRedistributeConfig: cmdlib.LURedistributeConfig,
- opcodes.OpRepairDiskSizes: cmdlib.LURepairDiskSizes,
- opcodes.OpQuery: cmdlib.LUQuery,
- opcodes.OpQueryFields: cmdlib.LUQueryFields,
- # node lu
- opcodes.OpAddNode: cmdlib.LUAddNode,
- opcodes.OpQueryNodes: cmdlib.LUQueryNodes,
- opcodes.OpQueryNodeVolumes: cmdlib.LUQueryNodeVolumes,
- opcodes.OpQueryNodeStorage: cmdlib.LUQueryNodeStorage,
- opcodes.OpModifyNodeStorage: cmdlib.LUModifyNodeStorage,
- opcodes.OpRepairNodeStorage: cmdlib.LURepairNodeStorage,
- opcodes.OpRemoveNode: cmdlib.LURemoveNode,
- opcodes.OpSetNodeParams: cmdlib.LUSetNodeParams,
- opcodes.OpPowercycleNode: cmdlib.LUPowercycleNode,
- opcodes.OpMigrateNode: cmdlib.LUMigrateNode,
- opcodes.OpNodeEvacuationStrategy: cmdlib.LUNodeEvacuationStrategy,
- # instance lu
- opcodes.OpCreateInstance: cmdlib.LUCreateInstance,
- opcodes.OpReinstallInstance: cmdlib.LUReinstallInstance,
- opcodes.OpRemoveInstance: cmdlib.LURemoveInstance,
- opcodes.OpRenameInstance: cmdlib.LURenameInstance,
- opcodes.OpActivateInstanceDisks: cmdlib.LUActivateInstanceDisks,
- opcodes.OpShutdownInstance: cmdlib.LUShutdownInstance,
- opcodes.OpStartupInstance: cmdlib.LUStartupInstance,
- opcodes.OpRebootInstance: cmdlib.LURebootInstance,
- opcodes.OpDeactivateInstanceDisks: cmdlib.LUDeactivateInstanceDisks,
- opcodes.OpReplaceDisks: cmdlib.LUReplaceDisks,
- opcodes.OpRecreateInstanceDisks: cmdlib.LURecreateInstanceDisks,
- opcodes.OpFailoverInstance: cmdlib.LUFailoverInstance,
- opcodes.OpMigrateInstance: cmdlib.LUMigrateInstance,
- opcodes.OpMoveInstance: cmdlib.LUMoveInstance,
- opcodes.OpConnectConsole: cmdlib.LUConnectConsole,
- opcodes.OpQueryInstances: cmdlib.LUQueryInstances,
- opcodes.OpQueryInstanceData: cmdlib.LUQueryInstanceData,
- opcodes.OpSetInstanceParams: cmdlib.LUSetInstanceParams,
- opcodes.OpGrowDisk: cmdlib.LUGrowDisk,
- # node group lu
- opcodes.OpAddGroup: cmdlib.LUAddGroup,
- opcodes.OpQueryGroups: cmdlib.LUQueryGroups,
- opcodes.OpSetGroupParams: cmdlib.LUSetGroupParams,
- opcodes.OpRemoveGroup: cmdlib.LURemoveGroup,
- opcodes.OpRenameGroup: cmdlib.LURenameGroup,
- # os lu
- opcodes.OpDiagnoseOS: cmdlib.LUDiagnoseOS,
- # exports lu
- opcodes.OpQueryExports: cmdlib.LUQueryExports,
- opcodes.OpPrepareExport: cmdlib.LUPrepareExport,
- opcodes.OpExportInstance: cmdlib.LUExportInstance,
- opcodes.OpRemoveExport: cmdlib.LURemoveExport,
- # tags lu
- opcodes.OpGetTags: cmdlib.LUGetTags,
- opcodes.OpSearchTags: cmdlib.LUSearchTags,
- opcodes.OpAddTags: cmdlib.LUAddTags,
- opcodes.OpDelTags: cmdlib.LUDelTags,
- # test lu
- opcodes.OpTestDelay: cmdlib.LUTestDelay,
- opcodes.OpTestAllocator: cmdlib.LUTestAllocator,
- opcodes.OpTestJobqueue: cmdlib.LUTestJobqueue,
- # OOB lu
- opcodes.OpOutOfBand: cmdlib.LUOutOfBand,
- }
+ DISPATCH_TABLE = _ComputeDispatchTable()
def __init__(self, context, ec_id):
"""Constructor for Processor
self.Log(" - INFO: %s" % message)
def GetECId(self):
+ """Returns the current execution context ID.
+
+ """
if not self._ec_id:
- errors.ProgrammerError("Tried to use execution context id when not set")
+ raise errors.ProgrammerError("Tried to use execution context id when"
+ " not set")
return self._ec_id
self.callfn = callfn
self.lu = lu
self.op = lu.op
- self.env, node_list_pre, node_list_post = self._BuildEnv()
- self.node_list = {constants.HOOKS_PHASE_PRE: node_list_pre,
- constants.HOOKS_PHASE_POST: node_list_post}
+ self.pre_env = None
+ self.pre_nodes = None
- def _BuildEnv(self):
+ def _BuildEnv(self, phase):
"""Compute the environment and the target nodes.
Based on the opcode and the current node list, this builds the
environment for the hooks and the target node list for the run.
"""
- env = {
- "PATH": "/sbin:/bin:/usr/sbin:/usr/bin",
- "GANETI_HOOKS_VERSION": constants.HOOKS_VERSION,
- "GANETI_OP_CODE": self.op.OP_ID,
- "GANETI_OBJECT_TYPE": self.lu.HTYPE,
- "GANETI_DATA_DIR": constants.DATA_DIR,
- }
+ if phase == constants.HOOKS_PHASE_PRE:
+ prefix = "GANETI_"
+ elif phase == constants.HOOKS_PHASE_POST:
+ prefix = "GANETI_POST_"
+ else:
+ raise AssertionError("Unknown phase '%s'" % phase)
+
+ env = {}
if self.lu.HPATH is not None:
- lu_env, lu_nodes_pre, lu_nodes_post = self.lu.BuildHooksEnv()
+ (lu_env, lu_nodes_pre, lu_nodes_post) = self.lu.BuildHooksEnv()
if lu_env:
- for key in lu_env:
- env["GANETI_" + key] = lu_env[key]
+ assert not compat.any(key.upper().startswith(prefix)
+ for key in lu_env)
+ env.update(("%s%s" % (prefix, key), value)
+ for (key, value) in lu_env.items())
else:
lu_nodes_pre = lu_nodes_post = []
+ if phase == constants.HOOKS_PHASE_PRE:
+ assert compat.all((key.startswith("GANETI_") and
+ not key.startswith("GANETI_POST_"))
+ for key in env)
+
+ # Record environment for any post-phase hooks
+ self.pre_env = env
+
+ elif phase == constants.HOOKS_PHASE_POST:
+ assert compat.all(key.startswith("GANETI_POST_") for key in env)
+
+ if self.pre_env:
+ assert not compat.any(key.startswith("GANETI_POST_")
+ for key in self.pre_env)
+ env.update(self.pre_env)
+ else:
+ raise AssertionError("Unknown phase '%s'" % phase)
+
return env, frozenset(lu_nodes_pre), frozenset(lu_nodes_post)
- def _RunWrapper(self, node_list, hpath, phase):
+ def _RunWrapper(self, node_list, hpath, phase, phase_env):
"""Simple wrapper over self.callfn.
This method fixes the environment before doing the rpc call.
"""
- env = self.env.copy()
- env["GANETI_HOOKS_PHASE"] = phase
- env["GANETI_HOOKS_PATH"] = hpath
- if self.lu.cfg is not None:
- env["GANETI_CLUSTER"] = self.lu.cfg.GetClusterName()
- env["GANETI_MASTER"] = self.lu.cfg.GetMasterNode()
+ cfg = self.lu.cfg
+ env = {
+ "PATH": "/sbin:/bin:/usr/sbin:/usr/bin",
+ "GANETI_HOOKS_VERSION": constants.HOOKS_VERSION,
+ "GANETI_OP_CODE": self.op.OP_ID,
+ "GANETI_OBJECT_TYPE": self.lu.HTYPE,
+ "GANETI_DATA_DIR": constants.DATA_DIR,
+ "GANETI_HOOKS_PHASE": phase,
+ "GANETI_HOOKS_PATH": hpath,
+ }
+
+ if cfg is not None:
+ env["GANETI_CLUSTER"] = cfg.GetClusterName()
+ env["GANETI_MASTER"] = cfg.GetMasterNode()
+
+ if phase_env:
+ assert not (set(env) & set(phase_env)), "Environment variables conflict"
+ env.update(phase_env)
+
+ # Convert everything to strings
env = dict([(str(key), str(val)) for key, val in env.iteritems()])
+ assert compat.all(key == "PATH" or key.startswith("GANETI_")
+ for key in env)
+
return self.callfn(node_list, hpath, phase, env)
def RunPhase(self, phase, nodes=None):
@raise errors.HooksAbort: on failure of one of the hooks
"""
- if not self.node_list[phase] and not nodes:
+ (env, node_list_pre, node_list_post) = self._BuildEnv(phase)
+ if nodes is None:
+ if phase == constants.HOOKS_PHASE_PRE:
+ self.pre_nodes = (node_list_pre, node_list_post)
+ nodes = node_list_pre
+ elif phase == constants.HOOKS_PHASE_POST:
+ post_nodes = (node_list_pre, node_list_post)
+ assert self.pre_nodes == post_nodes, \
+ ("Node lists returned for post-phase hook don't match pre-phase"
+ " lists (pre %s, post %s)" % (self.pre_nodes, post_nodes))
+ nodes = node_list_post
+ else:
+ raise AssertionError("Unknown phase '%s'" % phase)
+
+ if not nodes:
# empty node list, we should not attempt to run this as either
# we're in the cluster init phase and the rpc client part can't
# even attempt to run, or this LU doesn't do hooks at all
return
- hpath = self.lu.HPATH
- if nodes is not None:
- results = self._RunWrapper(nodes, hpath, phase)
- else:
- results = self._RunWrapper(self.node_list[phase], hpath, phase)
- errs = []
+
+ results = self._RunWrapper(nodes, self.lu.HPATH, phase, env)
if not results:
msg = "Communication Failure"
if phase == constants.HOOKS_PHASE_PRE:
else:
self.lu.LogWarning(msg)
return results
+
+ errs = []
for node_name in results:
res = results[node_name]
if res.offline:
continue
+
msg = res.fail_msg
if msg:
self.lu.LogWarning("Communication failure to node %s: %s",
node_name, msg)
continue
+
for script, hkr, output in res.payload:
if hkr == constants.HKR_FAIL:
if phase == constants.HOOKS_PHASE_PRE:
output = "(no output)"
self.lu.LogWarning("On %s script %s failed, output: %s" %
(node_name, script, output))
+
if errs and phase == constants.HOOKS_PHASE_PRE:
raise errors.HooksAbort(errs)
+
return results
def RunConfigUpdate(self):
top-level LI if the configuration has been updated.
"""
+ if self.pre_env is None:
+ raise AssertionError("Pre-phase must be run before configuration update")
+
phase = constants.HOOKS_PHASE_POST
hpath = constants.HOOKS_NAME_CFGUPDATE
nodes = [self.lu.cfg.GetMasterNode()]
- self._RunWrapper(nodes, hpath, phase)
+ self._RunWrapper(nodes, hpath, phase, self.pre_env)
projects / ganeti-local / blobdiff