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857df3cef7
This commit extends the postgres_fdw_get_connections() function to check if connections are closed. This is useful for detecting closed postgres_fdw connections that could prevent successful transaction commits. Users can roll back transactions immediately upon detecting closed connections, avoiding unnecessary processing of failed transactions. This feature is available only on systems supporting the non-standard POLLRDHUP extension to the poll system call, including Linux. Author: Hayato Kuroda Reviewed-by: Shinya Kato, Zhihong Yu, Kyotaro Horiguchi, Andres Freund Reviewed-by: Onder Kalaci, Takamichi Osumi, Vignesh C, Tom Lane, Ted Yu Reviewed-by: Katsuragi Yuta, Peter Smith, Shubham Khanna, Fujii Masao Discussion: https://postgr.es/m/TYAPR01MB58662809E678253B90E82CE5F5889@TYAPR01MB5866.jpnprd01.prod.outlook.com
18 lines
711 B
SQL
18 lines
711 B
SQL
/* contrib/postgres_fdw/postgres_fdw--1.1--1.2.sql */
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-- complain if script is sourced in psql, rather than via ALTER EXTENSION
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\echo Use "ALTER EXTENSION postgres_fdw UPDATE TO '1.2'" to load this file. \quit
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/* First we have to remove it from the extension */
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ALTER EXTENSION postgres_fdw DROP FUNCTION postgres_fdw_get_connections ();
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/* Then we can drop it */
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DROP FUNCTION postgres_fdw_get_connections ();
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CREATE FUNCTION postgres_fdw_get_connections (
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IN check_conn boolean DEFAULT false, OUT server_name text,
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OUT valid boolean, OUT used_in_xact boolean, OUT closed boolean)
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RETURNS SETOF record
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AS 'MODULE_PATHNAME', 'postgres_fdw_get_connections_1_2'
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LANGUAGE C STRICT PARALLEL RESTRICTED;
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