Macro hooks examples¶
This chapter consists of a series of examples demonstrating how to define hookable macros and how to programmatically attach hooks to macros.
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##
# This file is part of Sardana
##
# http://www.sardana-controls.org/
##
# Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
##
# Sardana is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
##
# Sardana is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
##
# You should have received a copy of the GNU Lesser General Public License
# along with Sardana. If not, see <http://www.gnu.org/licenses/>.
##
##############################################################################
"""This module contains macros that demonstrate the usage of hooks"""
__all__ = ["captain_hook", "captain_hook2", "loop", "hooked_scan",
"hooked_dummyscan"]
__docformat__ = 'restructuredtext'
from sardana.macroserver.macro import Macro, Type, Hookable, ExecMacroHook
class loop(Macro, Hookable):
"""A macro that executes a for loop. It accepts hooks.
This macro is part of the examples package. It was written for
demonstration purposes"""
hints = {'allowsHooks': ('pre-move', 'post-move', 'pre-acq', 'post-acq')}
param_def = [['start', Type.Integer, None, 'start point'],
['stop', Type.Integer, None, 'end point'],
['step', Type.Integer, 1, 'step']]
def run(self, start, stop, step):
self.info("Starting loop")
for i in range(start, stop, step):
self.output("At step %d" % i)
self.flushOutput()
for hook, hints in self.hooks:
self.info("running hook with hints=" + repr(hints))
hook()
self.info("Finished loop")
class captain_hook(Macro):
"""A macro that executes a loop macro. A hook was attached so that in each
step of the loop this hook is executed.
This macro is part of the examples package. It was written for
demonstration purposes"""
param_def = [['start', Type.Integer, None, 'start point'],
['stop', Type.Integer, None, 'end point'],
['step', Type.Integer, 1, 'step']]
def hook(self):
self.info("\thook execution")
def run(self, start, stop, step):
loop_macro, _ = self.createMacro("loop", start, stop, step)
loop_macro.hooks = [(self.hook, ["pre-acq"])]
self.runMacro(loop_macro)
class captain_hook2(Macro):
"""A macro that executes a loop macro. A hook was attached so that in each
step of the loop this hook is executed.
This macro is part of the examples package. It was written for
demonstration purposes"""
param_def = [['start', Type.Integer, None, 'start point'],
['stop', Type.Integer, None, 'end point'],
['step', Type.Integer, 1, 'step']]
def hook(self):
self.execMacroStr(["lsm"])
def run(self, start, stop, step):
loop_macro, _ = self.createMacro("loop", start, stop, step)
#h = self.createExecMacroHook(["lsm"])
# it gives the "pre-acq" hint to the hook
loop_macro.hooks = [self.hook]
self.runMacro(loop_macro)
class hooked_scan(Macro):
"""An example on how to attach hooks to the various hook points of a scan.
This macro is part of the examples package. It was written for
demonstration purposes"""
param_def = [
['motor', Type.Moveable, None, 'Motor to move'],
['start_pos', Type.Float, None, 'Scan start position'],
['final_pos', Type.Float, None, 'Scan final position'],
['nr_interv', Type.Integer, None, 'Number of scan intervals'],
['integ_time', Type.Float, None, 'Integration time']
]
def hook1(self):
self.info("\thook1 execution")
def hook2(self):
self.info("\thook2 execution")
def hook3(self):
self.info("\thook3 execution")
def hook4(self):
self.info("\thook4 execution")
def hook5(self):
self.info("\thook5 execution")
def hook6(self):
self.info("\thook6 execution")
def run(self, motor, start_pos, final_pos, nr_interv, integ_time):
ascan, pars = self.createMacro(
"ascan", motor, start_pos, final_pos, nr_interv, integ_time)
ascan.hooks = [(self.hook1, ["pre-acq"]),
(self.hook2, ["pre-acq", "post-acq",
"pre-move", "post-move", "aaaa"]),
self.hook3,
(self.hook4, ["pre-scan"]),
(self.hook5, ["pre-scan", "post-scan"]),
(self.hook6, ["post-step"])]
self.runMacro(ascan)
class hooked_scan_with_macro(Macro):
"""An example on how to attach macro (in this case without parameters)
as a hook to the various hook points of a scan.
This macro is part of the examples package. It was written for
demonstration purposes"""
param_def = [
['motor', Type.Moveable, None, 'Motor to move'],
['start_pos', Type.Float, None, 'Scan start position'],
['final_pos', Type.Float, None, 'Scan final position'],
['nr_interv', Type.Integer, None, 'Number of scan intervals'],
['integ_time', Type.Float, None, 'Integration time'],
['macro', Type.Macro, None, 'Macro to be used as hook'],
['hook_places', [['hook_place', Type.String, None, 'Hook place']],
None, 'Hook places where macro will be called']
]
def run(self, motor, start_pos, final_pos, nr_interv, integ_time, macro,
hook_places):
ascan, _ = self.createMacro(
"ascan", motor, start_pos, final_pos, nr_interv, integ_time)
macro_hook = ExecMacroHook(self, "umv", [["mot01", 1]])
ascan.hooks = [(macro_hook, hook_places)]
self.runMacro(ascan)
class hooked_dummyscan(Macro):
"""An example on how to attach hooks to the various hook points of a scan.
This macro is part of the examples package. It was written for
demonstration purposes"""
param_def = [
['start_pos', Type.Float, None, 'Scan start position'],
['final_pos', Type.Float, None, 'Scan final position'],
['nr_interv', Type.Integer, None, 'Number of scan intervals'],
['integ_time', Type.Float, None, 'Integration time']
]
def hook1(self):
self.info("\thook1 execution")
def hook2(self):
self.info("\thook2 execution")
def hook3(self):
self.info("\thook3 execution")
def run(self, start_pos, final_pos, nr_interv, integ_time):
dummyscan, pars = self.createMacro(
"dummyscan", start_pos, final_pos, nr_interv, integ_time)
dummyscan.hooks = [(self.hook1, ["pre-scan"]), (self.hook2, ["pre-acq",
"post-acq", "pre-move", "post-move", "aaaa"]), (self.hook3, ["post-scan"])]
self.runMacro(dummyscan)
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