Be more resilient to transient bugzilla error

ie: retry a few time (up to 5 times) with a 20 seconds pause between
each attempt before raising an exception.

Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>

distgit_bugzilla_sync/script.py

@@ -446,9 +446,24 @@ class BugzillaProxy:
                 # FIXME: initialowner has been made mandatory for some
                 # reason.  Asking dkl why.
                 data['initialowner'] = owner_email
+
+                def edit_component(data, num_attempts=5):
+                    for i in range(num_attempts):
+                        try:
+                            self.server.editcomponent(data)
+                            break
+                        except Exception as e:
+                            if i >= num_attempts - 1:
+                                raise
+                            if self.config['verbose']:
+                                print(f"    ERROR {e}")
+                                print("    - Query failed, going to try again in 20 seconds")
+                            # Wait 20 seconds and try again
+                            time.sleep(20)
+
                 if not self.config["dryrun"]:
                     try:
-                        self.server.editcomponent(data)
+                        edit_component(data)
                     except xmlrpc.client.Fault as e:
                         # Output something useful in args
                         e.args = (data, e.faultCode, e.faultString)
@@ -456,6 +471,7 @@ class BugzillaProxy:
                     except xmlrpc.client.ProtocolError as e:
                         e.args = ('ProtocolError', e.errcode, e.errmsg)
                         raise
+
                 if owner_changed:
                     self.update_open_bugs(
                         new_poc=owner_email,
@@ -500,9 +516,24 @@ class BugzillaProxy:
                         print(f"[ADDCOMP] {bz_product_name}/{package}  {key} set to FAS name(s) `{value}`")
                     else:
                         print(f"[ADDCOMP] {bz_product_name}/{package}  {key} set to {data.get(key)}")
+
+            def add_component(data, num_attempts=5):
+                for i in range(num_attempts):
+                    try:
+                        self.server.addcomponent(data)
+                        break
+                    except Exception as e:
+                        if i >= num_attempts - 1:
+                            raise
+                        if self.config['verbose']:
+                            print(f"    ERROR {e}")
+                            print("    - Query failed, going to try again in 20 seconds")
+                        # Wait 20 seconds and try again
+                        time.sleep(20)
+
             if not self.config["dryrun"]:
                 try:
-                    self.server.addcomponent(data)
+                    add_component(data)
                 except xmlrpc.client.Fault as e:
                     # Output something useful in args
                     e.args = (data, e.faultCode, e.faultString)