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Introduce macros for protocol characters.

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This commit introduces descriptively-named macros for the
identifiers used in wire protocol messages.  These new macros are
placed in a new header file so that they can be easily used by
third-party code.

Author: Dave Cramer
Reviewed-by: Alvaro Herrera, Tatsuo Ishii, Peter Smith, Robert Haas, Tom Lane, Peter Eisentraut, Michael Paquier
Discussion: https://postgr.es/m/CADK3HHKbBmK-PKf1bPNFoMC%2BoBt%2BpD9PH8h5nvmBQskEHm-Ehw%40mail.gmail.com
This commit is contained in:
Nathan Bossart
2023-08-22 19:16:12 -07:00
parent 7114791158
commit f4b54e1ed9
25 changed files with 305 additions and 204 deletions
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5
src/backend/utils/error/elog.c
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@@ -3465,7 +3465,10 @@ send_message_to_frontend(ErrorData *edata)
char tbuf[12];
/* 'N' (Notice) is for nonfatal conditions, 'E' is for errors */
pq_beginmessage(&msgbuf, (edata->elevel < ERROR) ? 'N' : 'E');
if (edata->elevel < ERROR)
pq_beginmessage(&msgbuf, PqMsg_NoticeResponse);
else
pq_beginmessage(&msgbuf, PqMsg_ErrorResponse);
sev = error_severity(edata->elevel);
pq_sendbyte(&msgbuf, PG_DIAG_SEVERITY);