Dear all,
I would like to use Larch as an external function server.
I'm a Python novice, but if I understand correctly, the present server (larch
-r) provides access to a Larch process controllable with xmlrpc from outside.
However, I would like to do something like below to achieve looser coupling
with my future code (maybe not in python).
How can I do that?
I appreciate any suggestion for my first step to go, though I guess it is a bit
far from the Larch way.
### client.py (not a working code)
from six.moves.xmlrpc_client import ServerProxy
import os, json
def main():
s = ServerProxy("http://127.0.0.1:4966/";, allow_none = True)
response = s.read_ascii(os.path.abspath("/path/to/xas/data"))
# I expect a JSON or python dict with keys like "energy", "mu", etc.
data = response
response = s.pre_edge(data)
# data is a JSON or python dict with keys like "energy", "mu", etc.
if __name__ == '__main__':
main()
### client.py end
I guess one can write some sort of function wrapper, if one wants.
### server.py (not a working code)
from six.moves.socketserver import ThreadingMixIn
from six.moves.xmlrpc_server import SimpleXMLRPCServer,
SimpleXMLRPCRequestHandler
import json
import larch
from larch_plugins.xafs import find_e0, pre_edge, autobk
from larch_plugins.io import read_ascii
class LarchServer(ThreadingMixIn, SimpleXMLRPCServer):
def __init__(self, *args, **kw):
super().__init__(*args, **kw)
self.larch = larch.Interpreter(with_plugins=True)
self.larch.run_init_scripts()
self.register_introspection_functions()
class LarchRequestHandler(SimpleXMLRPCRequestHandler):
def __init__(self, *args, **kw):
super().__init__(*args, **kw)
def _dispatch(self, method_name, args):
return getattr(self, method_name)(*args)
### wrapper function to Larch function
### Do something nice to convert the file into processed data as JSON or a
python dict
def read_ascii(self, filepath):
data = read_ascii(filepath, _larch=larch)
# Return processed data as JSON, for example.
return json.dumps(data)
def main():
server = LarchServer( ("127.0.0.1", 4966),
requestHandler = LarchRequestHandler,
logRequests = None,
allow_none = True )
server.serve_forever()
if __name__ == '__main__':
main()
### server.py end
--
ASAKURA, Hiroyuki (Ph.D)
Program-Specific Senior Lecturer (ESICB)
T. Tanaka Lab., ESICB, Kyoto University, Japan
asak...@moleng.kyoto-u.ac.jp
http://www.moleng.kyoto-u.ac.jp/~moleng_04/asakura/
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