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# -*- coding: utf-8 -*-
# Licensed under the MIT license
# http://opensource.org/licenses/mit-license.php
import simplejson as json
from twisted.web import resource,static
from twisted.internet import defer
from coherence import log
class JsonInterface(resource.Resource,log.Loggable):
logCategory = 'json'
#isLeaf = False
def __init__(self, controlpoint):
self.controlpoint = controlpoint
self.controlpoint.coherence.add_web_resource('json',
self)
self.children = {}
def render_GET(self,request):
d = defer.maybeDeferred(self.do_the_render,request)
return d
def render_POST(self,request):
d = defer.maybeDeferred(self.do_the_render,request)
return d
def getChildWithDefault(self,path,request):
self.info('getChildWithDefault, %s, %s, %s %s %r' % (request.method, path, request.uri, request.client,request.args))
#return self.do_the_render(request)
d = defer.maybeDeferred(self.do_the_render,request)
return d
def do_the_render(self,request):
self.warning('do_the_render, %s, %s, %s %r %s' % (request.method, request.path,request.uri, request.args, request.client))
msg = "Houston, we've got a problem"
path = request.path.split('/')
path = path[2:]
self.warning('path %r' % path)
if request.method in ('GET','POST'):
request.postpath = None
if request.method == 'GET':
if path[0] == 'devices':
return self.list_devices(request)
else:
device = self.controlpoint.get_device_with_id(path[0])
if device != None:
service = device.get_service_by_type(path[1])
if service != None:
action = service.get_action(path[2])
if action != None:
return self.call_action(action,request)
else:
msg = "action %r on service type %r for device %r not found" % (path[2],path[1],path[0])
else:
msg = "service type %r for device %r not found" % (path[1],path[0])
else:
msg = "device with id %r not found" % path[0]
request.setResponseCode(404,message=msg)
return static.Data("<html><p>%s</p></html>" % msg,'text/html')
def list_devices(self,request):
devices = []
for device in self.controlpoint.get_devices():
devices.append(device.as_dict())
return static.Data(json.dumps(devices),'application/json')
def call_action(self,action,request):
kwargs = {}
for entry,value_list in request.args.items():
kwargs[entry] = unicode(value_list[0])
def to_json(result):
self.warning("to_json")
return static.Data(json.dumps(result),'application/json')
def fail(f):
request.setResponseCode(404)
return static.Data("<html><p>Houston, we've got a problem</p></html>",'text/html')
d = action.call(**kwargs)
d.addCallback(to_json)
d.addErrback(fail)
return d
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