mirror of
https://github.com/internetarchive/brozzler.git
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Add additional checks for weird chrome behavior, serialize requests
This commit is contained in:
Eldon
parent
6dc20e660f
commit
09b0060137
195
umbra/umbra.py
195
umbra/umbra.py
@ -10,108 +10,115 @@ from kombu import Connection, Exchange, Queue
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logging.basicConfig(level=logging.INFO)
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class Umbra:
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def __init__(self, port, amqpurl):
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self.cmd_id = 0
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self.chrome_debug_port = port
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self.producer = None
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self.amqpurl = amqpurl
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self.launch_tab_socket = self.get_websocket(self.on_open)
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threading.Thread(target=self.launch_tab_socket.run_forever).start()
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def get_websocket(self, on_open, url=None):
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def fetch_debugging_json():
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return loads(urllib.request.urlopen("http://localhost:%s/json" % self.chrome_debug_port).read().decode('utf-8').replace("\\n",""))
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time.sleep(0.5)
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debug_info = []
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while not debug_info:
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debug_info = fetch_debugging_json()
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if url:
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debug_info = [x for x in debug_info if x['url'] == url]
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return_socket = websocket.WebSocketApp(debug_info[0]['webSocketDebuggerUrl'], on_message = self.handle_message, on_error = print )
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return_socket.on_open = on_open
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return return_socket
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def handle_message(self, ws, message):
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message = loads(message)
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if "method" in message.keys() and message["method"] == "Network.requestWillBeSent":
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request_queue = Queue('requests', routing_key='request', exchange=self.umbra_exchange)
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self.producer.publish(message['params']['request'],routing_key='request', exchange=self.umbra_exchange, declare=[request_queue])
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def __init__(self, port, amqpurl):
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self.cmd_id = 0
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self.chrome_debug_port = port
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self.producer = None
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self.current_socket = False
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self.amqpurl = amqpurl
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self.launch_tab_socket = self.get_websocket(self.on_open)
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self.producer_lock = threading.Lock()
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threading.Thread(target=self.launch_tab_socket.run_forever).start()
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def start_amqp(self):
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self.umbra_exchange = Exchange('umbra', 'direct', durable=True)
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url_queue = Queue('urls', routing_key='url', exchange=self.umbra_exchange)
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with Connection(self.amqpurl) as conn:
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self.producer = conn.Producer(serializer='json')
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with conn.Consumer(url_queue, callbacks=[self.fetch_url]) as consumer:
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while True:
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conn.drain_events()
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def get_websocket(self, on_open, url=None):
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def fetch_debugging_json():
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return loads(urllib.request.urlopen("http://localhost:%s/json" % self.chrome_debug_port).read().decode('utf-8').replace("\\n",""))
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time.sleep(0.5)
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debug_info = []
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while not (debug_info and 'webSocketDebuggerUrl' in debug_info[0]):
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debug_info = fetch_debugging_json()
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if url:
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debug_info = [x for x in debug_info if x['url'] == url]
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return_socket = websocket.WebSocketApp(debug_info[0]['webSocketDebuggerUrl'], on_message = self.handle_message)
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return_socket.on_open = on_open
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return return_socket
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def on_open(self, ws):
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threading.Thread(target=self.start_amqp).start()
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def handle_message(self, ws, message):
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message = loads(message)
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if "method" in message.keys() and message["method"] == "Network.requestWillBeSent":
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request_queue = Queue('requests', routing_key='request', exchange=self.umbra_exchange)
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with self.producer_lock:
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self.producer.publish(message['params']['request'],routing_key='request', exchange=self.umbra_exchange, declare=[request_queue])
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def send_command(self,tab=None, **kwargs):
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if not tab:
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tab = self.launch_tab_socket
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command = {}
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command.update(kwargs)
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self.cmd_id += 1
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command['id'] = self.cmd_id
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tab.send(dumps(command))
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def fetch_url(self, body, message):
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url = body['url']
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new_page = 'data:text/html;charset=utf-8,<html><body>%s</body></html>' % str(uuid.uuid4())
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self.send_command(method="Runtime.evaluate", params={"expression":"window.open('%s');" % new_page})
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def on_open(ws):
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ws.on_message=self.handle_message
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self.send_command(tab=ws, method="Network.enable")
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self.send_command(tab=ws, method="Runtime.evaluate", params={"expression":"document.location = '%s';" % url})
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def do_close():
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time.sleep(10)
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self.send_command(tab=ws, method="Runtime.evaluate", params={"expression":"window.open('', '_self', ''); window.close(); "})
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#threading.Thread(target=do_close).start()
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socket = self.get_websocket(on_open, new_page)
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message.ack()
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threading.Thread(target=socket.run_forever).start()
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def start_amqp(self):
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self.umbra_exchange = Exchange('umbra', 'direct', durable=True)
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url_queue = Queue('urls', routing_key='url', exchange=self.umbra_exchange)
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with Connection(self.amqpurl) as conn:
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self.producer = conn.Producer(serializer='json')
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with conn.Consumer(url_queue, callbacks=[self.fetch_url]) as consumer:
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while True:
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conn.drain_events()
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def on_open(self, ws):
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threading.Thread(target=self.start_amqp).start()
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def send_command(self,tab=None, **kwargs):
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if not tab:
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tab = self.launch_tab_socket
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command = {}
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command.update(kwargs)
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self.cmd_id += 1
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command['id'] = self.cmd_id
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tab.send(dumps(command))
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def fetch_url(self, body, message):
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while self.current_socket:
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time.sleep(1)
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self.current_socket = True
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url = body['url']
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new_page = 'data:text/html;charset=utf-8,<html><body>%s</body></html>' % str(uuid.uuid4())
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self.send_command(method="Runtime.evaluate", params={"expression":"window.open('%s');" % new_page})
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def on_open(ws):
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ws.on_message=self.handle_message
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self.send_command(tab=ws, method="Network.enable")
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self.send_command(tab=ws, method="Runtime.evaluate", params={"expression":"document.location = '%s';" % url})
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def do_close():
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time.sleep(10)
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self.send_command(tab=ws, method="Runtime.evaluate", params={"expression":"window.open('', '_self', ''); window.close(); "})
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self.current_socket = False
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threading.Thread(target=do_close).start()
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socket = self.get_websocket(on_open, new_page)
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message.ack()
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threading.Thread(target=socket.run_forever).start()
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class Chrome():
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def __init__(self, port, executable, browser_wait):
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self.port = port
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self.executable = executable
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self.browser_wait=browser_wait
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def __init__(self, port, executable, browser_wait):
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self.port = port
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self.executable = executable
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self.browser_wait=browser_wait
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def __enter__(self):
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import psutil, subprocess
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self.chrome_process = subprocess.Popen([self.executable, "--disable-web-sockets", "--temp-profile", "--remote-debugging-port=%s" % self.port])
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start = time.time()
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import socket
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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while sock.connect_ex(('127.0.0.1',int(self.port))) != 0 and (time.time() - start) < float(self.browser_wait):
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time.sleep(0.1)
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def __enter__(self):
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import psutil, subprocess
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self.chrome_process = subprocess.Popen([self.executable, "--disable-web-sockets", "--temp-profile", "--remote-debugging-port=%s" % self.port])
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start = time.time()
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import socket
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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while sock.connect_ex(('127.0.0.1',int(self.port))) != 0 and (time.time() - start) < float(self.browser_wait):
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time.sleep(0.1)
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def __exit__(self, *args):
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self.chrome_process.kill()
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def __exit__(self, *args):
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self.chrome_process.kill()
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def main():
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arg_parser = argparse.ArgumentParser(prog=os.path.basename(sys.argv[0]),
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description='umbra - Browser automation tool',
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formatter_class=argparse.ArgumentDefaultsHelpFormatter)
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arg_parser.add_argument('-w', '--browser-wait', dest='browser_wait', default='10',
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help='Seconds to wait for browser initialization')
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arg_parser.add_argument('-e', '--executable', dest='executable', default='chromium-browser',
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help='Executable to use to invoke chrome')
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arg_parser.add_argument('-p', '--port', dest='port', default='9222',
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help='Port to have invoked chrome listen on for debugging connections')
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arg_parser.add_argument('-u', '--url', dest='amqpurl', default='amqp://guest:guest@localhost:5672//',
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help='URL identifying the amqp server to talk to')
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args = arg_parser.parse_args(args=sys.argv[1:])
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with Chrome(args.port, args.executable, args.browser_wait):
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Umbra(args.port, args.amqpurl)
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while True:
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time.sleep(1)
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arg_parser = argparse.ArgumentParser(prog=os.path.basename(sys.argv[0]),
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description='umbra - Browser automation tool',
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formatter_class=argparse.ArgumentDefaultsHelpFormatter)
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arg_parser.add_argument('-w', '--browser-wait', dest='browser_wait', default='10',
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help='Seconds to wait for browser initialization')
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arg_parser.add_argument('-e', '--executable', dest='executable', default='chromium-browser',
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help='Executable to use to invoke chrome')
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arg_parser.add_argument('-p', '--port', dest='port', default='9222',
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help='Port to have invoked chrome listen on for debugging connections')
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arg_parser.add_argument('-u', '--url', dest='amqpurl', default='amqp://guest:guest@localhost:5672//',
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help='URL identifying the amqp server to talk to')
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args = arg_parser.parse_args(args=sys.argv[1:])
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with Chrome(args.port, args.executable, args.browser_wait):
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Umbra(args.port, args.amqpurl)
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while True:
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time.sleep(1)
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if __name__ == "__main__":
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main()
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main()
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