Package ganeti :: Module mcpu :: Class HooksMaster

Class HooksMaster

Hooks master.

This class distributes the run commands to the nodes based on the specific LU class.

In order to remove the direct dependency on the rpc module, the constructor needs a function which actually does the remote call. This will usually be rpc.call_hooks_runner, but any function which behaves the same works.

Instance Methods

[hide private]

__init__(self, callfn, lu)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature

source code

_BuildEnv(self)
Compute the environment and the target nodes.

source code

_RunWrapper(self, node_list, hpath, phase)
Simple wrapper over self.callfn.

source code

RunPhase(self, phase, nodes=None)
Run all the scripts for a phase.

source code

RunConfigUpdate(self)
Run the special configuration update hook

source code

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, callfn, lu)
(Constructor)

source code

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

Overrides: object.__init__: (inherited documentation)

_BuildEnv(self)

source code

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.

_RunWrapper(self, node_list, hpath, phase)

source code

Simple wrapper over self.callfn.

This method fixes the environment before doing the rpc call.

RunPhase(self, phase, nodes=None)

source code

Run all the scripts for a phase.

This is the main function of the HookMaster.

Parameters:

phase - one of constants.HOOKS_PHASE_POST or constants.HOOKS_PHASE_PRE; it denotes the hooks phase
nodes - overrides the predefined list of nodes for the given phase

Returns:

the processed results of the hooks multi-node rpc call

Raises:

errors.HooksFailure - on communication failure to the nodes
errors.HooksAbort - on failure of one of the hooks

RunConfigUpdate(self)

source code

Run the special configuration update hook

This is a special hook that runs only on the master after each top-level LI if the configuration has been updated.

Class HooksMaster

__init__(self, callfn, lu) (Constructor)

_BuildEnv(self)

_RunWrapper(self, node_list, hpath, phase)

RunPhase(self, phase, nodes=None)

RunConfigUpdate(self)

init(self, callfn, lu)
(Constructor)