[jira] [Created] (CAMEL-25690) camel-milo - a producer node ID with an unknown namespace URI fails the whole client connection

["Serdar Gökay (Jira)" <ji...@apache.org>]

Serdar Gökay created CAMEL-25690:
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             Summary: camel-milo - a producer node ID with an unknown namespace URI fails the whole client connection
                 Key: CAMEL-25690
                 URL: https://issues.apache.org/jira/browse/CAMEL-25690
             Project: Camel
          Issue Type: Bug
          Components: camel-milo
    Affects Versions: 4.22.1, 4.18.5, 4.16.0
            Reporter: Serdar Gökay


Follow-up of CAMEL-25671 (consumer side, PR https://github.com/apache/camel/pull/27906), asked for in that review.

The producer operations of {{milo-client}} and {{milo-browse}} (write, method call, read, browse) resolve their node IDs with {{SubscriptionManager.Connected.lookupNamespace}}. A node ID whose namespace URI ({{nsu=}}) is not in the namespace table of the server makes {{NodeIds.toNodeId}} throw a {{NullPointerException}} ({{requireNonNull(namespaceIndex)}}). The exceptional future reaches the {{handleAsync}} block of {{SubscriptionManager.write/call/readValues/browse}}, which calls {{handleConnectionFailure}}: the whole client connection is torn down and rebuilt, including the consumers that share it. {{write}} and {{call}} additionally swallow the error and complete with {{null}}, so the exchange does not see a failure.

Expected: the exchange fails (or receives a bad status code), the connection and the other users of it are not affected, as the consumer does since CAMEL-25671.

CAMEL-25671 left this out of scope on purpose. With the producer fixed, the consumer helper {{lookupMonitoredNode}} and {{lookupNamespace}} can share one lookup that handles an unknown namespace URI, as suggested in the review of PR 27906.

I can send a PR.



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