William Henry created PROTON-46:
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Summary: No way to get at a message's subscription using
pn_messenger_t and pn_message_t APIs
Key: PROTON-46
URL: https://issues.apache.org/jira/browse/PROTON-46
Project: Qpid Proton
Issue Type: Bug
Components: proton-c
Reporter: William Henry
Motivation:
Integrate with another messaging API. That other API may handle incoming
messages differently based on their notion of a subscription. There is no way
to know which subscription a message came in on when using the messenger API.
It would be handier if I could just get something back form the API to help me
track/lookup.
What would be nice is two API additions.
int pn_messenger_context_subscribe(pn_messenger_t *messenger, const char
*source, void* context);
int pn_messenger_context_get(pn_messenger_t *messenger, pn_message_t *msg,
void* context);
The get would return the context for that message based on the subscription.
Alternatively what would be better is:
int pn_messenger_subscribe(pn_messenger_t *messenger, const char *source,
void* context);
void *pn_message_subscribe_context(pn_message_t *msg);
For C we can just leave it as NULL if we don't care about it and in the
idiomatic APIs we can turn it into an optional argument.
An incoming message would have it's subscription context stored with it when it
arrives. No extra lookup required on the: void
*pn_message_subscribe_context(pn_message_t *msg);
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