[Canonical-ubuntu-qa] [Merge] ~andersson123/autopkgtest-cloud:improve-handling-cache-amqp-failures into autopkgtest-cloud:master

[Tim Andersson]

Tim Andersson has proposed merging 
~andersson123/autopkgtest-cloud:improve-handling-cache-amqp-failures into 
autopkgtest-cloud:master.

Requested reviews:
  Canonical's Ubuntu QA (canonical-ubuntu-qa)

For more details, see:
https://code.launchpad.net/~andersson123/autopkgtest-cloud/+git/autopkgtest-cloud/+merge/458799
-- 
Your team Canonical's Ubuntu QA is requested to review the proposed merge of 
~andersson123/autopkgtest-cloud:improve-handling-cache-amqp-failures into 
autopkgtest-cloud:master.

diff --git a/charms/focal/autopkgtest-web/webcontrol/request/submit.py b/charms/focal/autopkgtest-web/webcontrol/request/submit.py
index 1110863..bbee072 100644
--- a/charms/focal/autopkgtest-web/webcontrol/request/submit.py
+++ b/charms/focal/autopkgtest-web/webcontrol/request/submit.py
@@ -12,6 +12,7 @@ import re
 import sqlite3
 import urllib.parse
 import urllib.request
+import signal
 from datetime import datetime
 from urllib.error import HTTPError
 
@@ -76,6 +77,9 @@ class Submit:
             self.architectures.add(row[0])
         logging.debug("Valid architectures: %s" % self.architectures)
 
+        signal.signal(signal.SIGALRM, self.send_amqp_request_hander)
+        signal.alarm(60)
+
         # dissect AMQP URL
         self.amqp_creds = urllib.parse.urlsplit(
             cp["amqp"]["uri"], allow_fragments=False
@@ -343,10 +347,16 @@ class Submit:
             password=self.amqp_creds.password,
         ) as amqp_con:
             with amqp_con.channel() as ch:
-                ch.basic_publish(
-                    amqp.Message(body, delivery_mode=2),  # persistent
-                    routing_key=queue,
-                )
+                try:
+                    ch.basic_publish(
+                        amqp.Message(body, delivery_mode=2),  # persistent
+                        routing_key=queue,
+                    )
+                except amqp.exceptions.AMQPException as _:
+                    raise Exception("Publishing message to amqp failed.")
+    
+    def send_amqp_request_hander(signum, frame):
+        raise Exception("Publishing message to amqp failed.")
 
     @classmethod
     def post_json(cls, url, data, auth_file, project):

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