<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="color:#1F497D">Hello All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Need your help with the error I have been facing.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The channel creation (or the basic_publish operation) throws error as
<b>“AttributeError: 'BlockingConnection' object has no attribute 'disconnect'”, when</b> there is a time gap between connection establishment and channel creation (or basic_publish operation).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I am using Pika python amqp client and running rabbitmq-server ver 3.1.3-1 on SLES-11sp3.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Python 2.6.8 (unknown, May 29 2012, 22:30:44)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">[GCC 4.3.4 [gcc-4_3-branch revision 152973]] on linux2<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Type "help", "copyright", "credits" or "license" for more information.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">>>> import pika<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">>>> VEXCHANGE = 'exchange.external'<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">>>> connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost',connection_attempts=3,retry_delay=5))<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">>>> vchannel = connection.channel();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">>>> BODY = "blahblah"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">>>> vchannel.basic_publish(exchange=VEXCHANGE,routing_key='#',body=str(BODY),properties=pika.BasicProperties(delivery_mode = 2,))<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="color:#1F497D">This message is getting published without any issues. However, if after sometime (say 5 minutes) I do basic_publish again, I get below error.<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">>>> vchannel.basic_publish(exchange=VEXCHANGE,routing_key='#',body=str(BODY),properties=pika.BasicProperties(delivery_mode = 2,))<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">No handlers could be found for logger "pika.adapters.base_connection"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Traceback (most recent call last):<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "<stdin>", line 1, in <module><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "/usr/lib64/python2.6/site-packages/pika/adapters/blocking_connection.py", line 540, in basic_publish<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> (properties, body), False)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "/usr/lib64/python2.6/site-packages/pika/adapters/blocking_connection.py", line 1121, in _send_method<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> self.connection.send_method(self.channel_number, method_frame, content)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "/usr/lib64/python2.6/site-packages/pika/adapters/blocking_connection.py", line 249, in send_method<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> self._send_method(channel_number, method_frame, content)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "/usr/lib64/python2.6/site-packages/pika/connection.py", line 1489, in _send_method<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> self._send_frame(frame.Method(channel_number, method_frame))<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "/usr/lib64/python2.6/site-packages/pika/adapters/blocking_connection.py", line 388, in _send_frame<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> super(BlockingConnection, self)._send_frame(frame_value)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "/usr/lib64/python2.6/site-packages/pika/connection.py", line 1476, in _send_frame<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> self._flush_outbound()<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "/usr/lib64/python2.6/site-packages/pika/adapters/blocking_connection.py", line 348, in _flush_outbound<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> if self._handle_write():<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "/usr/lib64/python2.6/site-packages/pika/adapters/base_connection.py", line 338, in _handle_write<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> return self._handle_error(error)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "/usr/lib64/python2.6/site-packages/pika/adapters/base_connection.py", line 282, in _handle_error<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> self._handle_disconnect()<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> File "/usr/lib64/python2.6/site-packages/pika/adapters/blocking_connection.py", line 318, in _handle_disconnect<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> self.disconnect()<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="color:#1F497D">AttributeError: 'BlockingConnection' object has no attribute 'disconnect'<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">>>> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="color:#1F497D">At this time, I get the same error when I run
<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="color:#1F497D">>>>vchannel = connection.channel()<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The config file has the default heartbeat set to 30 seconds.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Any idea on what causing this error to come?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Nikunj<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>