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Improve PQtrace() output format

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Transform the PQtrace output format from its ancient (and mostly
useless) byte-level output format to a logical-message-level output,
making it much more usable.  This implementation allows the printing
code to be written (as it indeed was) by looking at the protocol
documentation, which gives more confidence that the three (docs, trace
code and actual code) actually match.

Author: 岩田 彩 (Aya Iwata) <iwata.aya@fujitsu.com>
Reviewed-by: 綱川 貴之 (Takayuki Tsunakawa) <tsunakawa.takay@fujitsu.com>
Reviewed-by: Kirk Jamison <k.jamison@fujitsu.com>
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: 黒田 隼人 (Hayato Kuroda) <kuroda.hayato@fujitsu.com>
Reviewed-by: "Nagaura, Ryohei" <nagaura.ryohei@jp.fujitsu.com>
Reviewed-by: Ryo Matsumura <matsumura.ryo@fujitsu.com>
Reviewed-by: Greg Nancarrow <gregn4422@gmail.com>
Reviewed-by: Jim Doty <jdoty@pivotal.io>
Reviewed-by: Álvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://postgr.es/m/71E660EB361DF14299875B198D4CE5423DE3FBA4@g01jpexmbkw25
This commit is contained in:
Alvaro Herrera
2021-03-30 20:12:34 -03:00
parent 5da9868ed9
commit 198b3716db
10 changed files with 804 additions and 82 deletions
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21
src/interfaces/libpq/fe-connect.c
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@ -6859,27 +6859,6 @@ PQsetErrorContextVisibility(PGconn *conn, PGContextVisibility show_context)
return old;
}
void
PQtrace(PGconn *conn, FILE *debug_port)
{
if (conn == NULL)
return;
PQuntrace(conn);
conn->Pfdebug = debug_port;
}
void
PQuntrace(PGconn *conn)
{
if (conn == NULL)
return;
if (conn->Pfdebug)
{
fflush(conn->Pfdebug);
conn->Pfdebug = NULL;
}
}
PQnoticeReceiver
PQsetNoticeReceiver(PGconn *conn, PQnoticeReceiver proc, void *arg)
{