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@sharoonthomas
Created March 12, 2012 01:03
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Tryton WSGI Application script
# -*- coding: utf-8 -*-
"""
wsgi_app
A wsgi application script to load tryton and also the middleware required
to support Cross Origin Resource Sharing (CORS).
Inspired by the original work at http://codereview.tryton.org/92001/ by
Cedric.
:copyright: (c) 2011 by Cedric Krier
:copyright: (c) 2012 by Openlabs Technologies & Consulting (P) Limited
:license: BSD, see LICENSE for more details.
"""
import sys
import json
import traceback
from BaseHTTPServer import BaseHTTPRequestHandler, DEFAULT_ERROR_MESSAGE
#: This parameter specifies the origin URLs from which the tryton server can
#: accept requests. While specifying '*' here might seem like a security hole
#: this is usually how your trytond runs anyway! listening to requests from
#: all IPs
ALLOW_ORIGIN = "*"
#: These are the only headers that are required by the app
ALLOW_HEADERS = "origin, x-requested-with, content-type"
#: If you have your config file in an unconventional location
CONFIG_PATH = 'trytond.conf'
from trytond.config import CONFIG
CONFIG.update_etc(CONFIG_PATH)
from trytond.protocols.jsonrpc import object_hook, JSONEncoder
from trytond.protocols.dispatcher import dispatch
from trytond.pool import Pool
from trytond.exceptions import UserError, UserWarning, NotLogged, \
ConcurrencyException
Pool.start()
def jsonrpc_app(environ, start_response):
'JSON-RPC dispatcher'
if environ['REQUEST_METHOD'] == 'POST':
body = ''
try:
length = int(environ.get('CONTENT_LENGTH', '0'))
except ValueError:
length = 0
body = environ['wsgi.input'].read(length)
rawreq = json.loads(body, object_hook=object_hook)
req_id = rawreq.get('id', 0)
method = rawreq['method']
params = rawreq.get('params', [])
response = {'id': req_id}
database_name = environ['PATH_INFO'][1:]
# TODO sao
method_list = method.split('.')
object_type = method_list[0]
object_name = '.'.join(method_list[1:-1])
method = method_list[-1]
args = (environ['SERVER_NAME'], int(environ['SERVER_PORT']),
'JSON-RPC', database_name, params[0], params[1], object_type,
object_name, method) + tuple(params[2:])
try:
response['result'] = dispatch(*args)
except (UserError, UserWarning, NotLogged,
ConcurrencyException), exception:
response['error'] = exception.args
except Exception:
tb_s = ''.join(traceback.format_exception(*sys.exc_info()))
for path in sys.path:
tb_s = tb_s.replace(path, '')
# report exception back to server
response['error'] = (str(sys.exc_value), tb_s)
start_response('200 OK', [('Content-Type', 'application/json-rpc')])
return [json.dumps(response, cls=JSONEncoder)]
# TODO implement GET
else:
code = '501'
message, explain = BaseHTTPRequestHandler.responses[code]
start_response(code, [('Content-Type', 'text/html'),
('Connection', 'close')])
return [DEFAULT_ERROR_MESSAGE % locals()]
class TrytonWebMiddleware(object):
"""
A Middleware class to extend the app to respond to OPTIONS request and
support Cross-origin resource sharing.
"""
def __init__(self, app):
self.app = app
def __call__(self, environ, start_response):
if environ['REQUEST_METHOD'] == 'OPTIONS':
# Most browser implementation of CORS sends an OPTIONS request
# first to test if the resource support XDomain requests.
# So handle them
start_response('200 OK', [
('Access-Control-Allow-Origin', ALLOW_ORIGIN),
('Access-Control-Allow-Headers', ALLOW_HEADERS),
])
return ['POST']
else:
def cors_start_response(status, headers, exc_info=None):
headers.append(
('Access-Control-Allow-Origin', ALLOW_ORIGIN)
)
headers.append(
('Access-Control-Allow-Headers', ALLOW_HEADERS)
)
return start_response(status, headers, exc_info)
return self.app(environ, cors_start_response)
application = TrytonWebMiddleware(jsonrpc_app)
if __name__ == '__main__':
# This is not a really stable/healthy way to run the wsgi app
#
# Install gunicorn using `pip install gunicorn` and then run the app
# using the following command
#
# `gunicorn wsgi_app -b 0.0.0.0:8000`
#
# where wsgi_app is the name of this file
#
from wsgiref.simple_server import make_server
httpd = make_server('', 8000, application)
httpd.handle_request()
@tejastank
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Really very useful script.

@tejastank
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How to set different addons location or custom made addons ?

@tejastank
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How to put this in auto start of ubuntu server ?

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