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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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8
src/backend/tcop/dest.c
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@@ -176,7 +176,7 @@ EndCommand(const QueryCompletion *qc, CommandDest dest, bool force_undecorated_o
len = BuildQueryCompletionString(completionTag, qc,
force_undecorated_output);
pq_putmessage('C', completionTag, len + 1);
pq_putmessage(PqMsg_Close, completionTag, len + 1);
case DestNone:
case DestDebug:
@@ -200,7 +200,7 @@ EndCommand(const QueryCompletion *qc, CommandDest dest, bool force_undecorated_o
void
EndReplicationCommand(const char *commandTag)
{
pq_putmessage('C', commandTag, strlen(commandTag) + 1);
pq_putmessage(PqMsg_Close, commandTag, strlen(commandTag) + 1);
}
/* ----------------
@@ -220,7 +220,7 @@ NullCommand(CommandDest dest)
case DestRemoteSimple:
/* Tell the FE that we saw an empty query string */
pq_putemptymessage('I');
pq_putemptymessage(PqMsg_EmptyQueryResponse);
break;
case DestNone:
@@ -258,7 +258,7 @@ ReadyForQuery(CommandDest dest)
{
StringInfoData buf;
pq_beginmessage(&buf, 'Z');
pq_beginmessage(&buf, PqMsg_ReadyForQuery);
pq_sendbyte(&buf, TransactionBlockStatusCode());
pq_endmessage(&buf);
}