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import BaseHTTPServer
import json
import posixpath
import sys
import urllib
from Queue import Queue
import jsonschema
from robot.api import logger
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
CommonEventSchemaV5 = "./CommonEventFormat_28.3.json"
EvtSchema = None
EventQueue = {"defaultTopic": Queue()}
def cleanUpEvent(topic="defaultTopic"):
try:
EventQueue.get(topic).empty()
except Exception as e:
logger.console(str(e))
logger.console("DMaaP Event enqueue failed")
def enqueEvent(evt, topic="defaultTopic"):
if topic not in EventQueue.keys():
EventQueue.update({topic: Queue()})
try:
EventQueue.get(topic).put(evt)
logger.console("DMaaP Event enqued - size=" + str(len(evt)))
return True
except Exception as e:
logger.console(str(e))
logger.console("DMaaP Event enqueue failed")
return False
def dequeEvent(topic="defaultTopic", waitSec=10):
try:
evt = EventQueue.get(topic).get(True, waitSec)
logger.console("DMaaP Event dequeued - size=" + str(len(evt)))
return evt
except Exception as e:
logger.console(str(e))
logger.console("DMaaP Event dequeue failed")
return None
class DMaaPHandler(BaseHTTPServer.BaseHTTPRequestHandler):
def do_PUT(self):
self.send_response(405)
return
def do_PATCH(self):
self.send_response(200)
return
def do_POST(self):
respCode = 0
if 'POST' not in self.requestline:
respCode = 405
if respCode == 0:
content_len = int(self.headers.getheader('content-length', 0))
post_body = self.rfile.read(content_len)
logger.console("DMaaP Receive Event:\n" + post_body)
indx = post_body.index("{")
if indx != 0:
post_body = post_body[indx:]
topic = self.getTopicName(self.path)
if topic is not None:
logger.console("DMaaP Topic Name: " + topic)
if enqueEvent(post_body, topic) == False:
print "enque event fails"
global EvtSchema
try:
if EvtSchema is None:
with open(CommonEventSchemaV5) as file:
EvtSchema = json.load(file)
decoded_body = json.loads(post_body)
jsonschema.validate(decoded_body, EvtSchema)
except:
respCode = 400
if respCode == 0:
if 'clientThrottlingState' in self.requestline:
self.send_response(204)
else:
self.send_response(200)
self.send_header('Content-Type', 'application/json')
self.end_headers()
self.wfile.write("{\"count\": 1, \"serverTimeMs\": 3}")
self.wfile.close()
else:
self.send_response(respCode)
return
def do_GET(self):
self.send_response(200)
self.send_header('Content-Type', 'application/json')
self.end_headers()
self.wfile.write(dequeEvent(self.getTopicName(self.path)))
self.wfile.close()
return
def getTopicName(self, path):
# abandon query parameters
path = path.split('?',1)[0]
path = path.split('#',1)[0]
path = posixpath.normpath(urllib.unquote(path))
parts = filter(None, path.split('/'))
if len(parts) > 1 and parts[0] == "events":
return str(parts[1])
else:
return None
def _main_ (HandlerClass = DMaaPHandler,
ServerClass = BaseHTTPServer.HTTPServer, protocol="HTTP/1.0"):
if sys.argv[1:]:
port = int(sys.argv[1])
else:
port = 2222
print "Load event schema file: " + CommonEventSchemaV5
with open(CommonEventSchemaV5) as file:
global EvtSchema
EvtSchema = json.load(file)
server_address = ('', port)
HandlerClass.protocol_version = protocol
httpd = ServerClass(server_address, HandlerClass)
sa = httpd.socket.getsockname()
print "Serving HTTP on", sa[0], "port", sa[1], "..."
httpd.serve_forever()
if __name__ == '__main__':
_main_()
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