[postmodern-devel] PATCH: Add support for asynchronous notifications
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Attached is a patch that adds Postmodern support for asynchronous notifications, as documented here: http://www.postgresql.org/docs/current/static/sql-listen.html http://www.postgresql.org/docs/current/static/sql-notify.html http://www.postgresql.org/docs/current/static/sql-unlisten.html and http://www.postgresql.org/docs/current/interactive/protocol-message-formats.... (under "NotificationResponse") It updates MESSAGE-CASE to watch for async notifications and, by default, issue a warning that looks very similar to what the psql client displays for async notifications: WARNING: Asynchornous notification "lisp" received from server process with PID 22063. It also adds a blocking function, WAIT-FOR-NOTIFICATION, that adds a handler-bind around the warning and returns the notification data when a notification is received. The patch isn't complete, though -- I wasn't sure how best to integrate the new public function, condition, and condition accessors into the documentation. How should I proceed? Zach
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Hi Zach, The patch looks great. Do I understand correctly that one uses the SQL commands to actually enable listening or send something? As for where the docs go, I'd say somewhere near the bottom of cl-postgresl.html, with a short mention and a link somewhere in postmodern.html. If you write out a rough draft and submit a patch containing that, I'll be happy to polish up the HTML and such. Cheers, Marijn
participants (2)
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Marijn Haverbeke
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Zach Beane