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Posted to dev@qpid.apache.org by "Chenxiong Qi (Jira)" <ji...@apache.org> on 2019/09/27 10:20:00 UTC
[jira] [Created] (PROTON-2111) python: memory leak on Container,
SSL, and SSLDomain objects
Chenxiong Qi created PROTON-2111:
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Summary: python: memory leak on Container, SSL, and SSLDomain objects
Key: PROTON-2111
URL: https://issues.apache.org/jira/browse/PROTON-2111
Project: Qpid Proton
Issue Type: Bug
Components: python-binding
Reporter: Chenxiong Qi
I have an application using qpid.proton to interact with ActiveMQ broker to publish messages. Following is a fake script showing an example of the app works to send a message.
{noformat}
class SampleSender(proton.handlers.MessagingHandler):
def __init__(self, msg_id, *args, **kwargs):
super(SampleSender, self).__init__(*args, **kwargs)
self.msg_id = msg_id
def on_start(self, event):
ssl_domain = proton.SSLDomain(proton.SSLDomain.MODE_CLIENT)
ssl_domain.set_credentials(producer_config['certificate'],
producer_config['private_key'],
None)
ssl_domain.set_trusted_ca_db(producer_config['trusted_certificates'])
ssl_domain.set_peer_authentication(proton.SSLDomain.VERIFY_PEER)
conn = event.container.connect(urls=producer_config['urls'],
reconnect=False,
ssl_domain=ssl_domain)
event.container.create_sender(conn, target='topic://VirtualTopic.event')
def on_sendable(self, event):
msg = proton.Message(body={'msg-id': self.msg_id, 'name': 'python'})
event.sender.send(msg)
event.sender.close()
event.connection.close()
def send_msg(msg_id):
container = proton.reactor.Container(SampleSender(msg_id))
container.run()
objgraph.show_growth()
for i in range(3):
send_msg(i + 1)
new_ids = objgraph.get_new_ids()
print(objgraph.at_addrs(new_ids['SSLDomain']))
print(objgraph.at_addrs(new_ids['Container']))
print(objgraph.at_addrs(new_ids['SSL']))
{noformat}
Each time to publish a message, a new Container object is created and a new handler object is created and passed to that container. After the code runs several times, Container, SSL and SSLDomain objects remain in memory and are not collected. I use objgraph to find out those objects.
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