database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-19 13:42:17 +03:00
Code Activity

Allow bidirectional copy messages in streaming replication mode.

Browse Source 
Fujii Masao.  Review by Alvaro Herrera, Tom Lane, and myself.
This commit is contained in:
Robert Haas
2010-12-11 09:27:37 -05:00
parent 20f3964291
commit d3d414696f
11 changed files with 172 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/interfaces/libpq/fe-protocol3.c
View File

@@ -358,6 +358,12 @@ pqParseInput3(PGconn *conn)
conn->asyncStatus = PGASYNC_COPY_OUT;
conn->copy_already_done = 0;
break;
case 'W': /* Start Copy Both */
if (getCopyStart(conn, PGRES_COPY_BOTH))
return;
conn->asyncStatus = PGASYNC_COPY_BOTH;
conn->copy_already_done = 0;
break;
case 'd': /* Copy Data */
/*
@@ -1196,7 +1202,8 @@ getNotify(PGconn *conn)
}
/*
* getCopyStart - process CopyInResponse or CopyOutResponse message
* getCopyStart - process CopyInResponse, CopyOutResponse or
* CopyBothResponse message
*
* parseInput already read the message type and length.
*/
@@ -1367,6 +1374,7 @@ getCopyDataMessage(PGconn *conn)
/*
* PQgetCopyData - read a row of data from the backend during COPY OUT
* or COPY BOTH
*
* If successful, sets *buffer to point to a malloc'd row of data, and
* returns row length (always > 0) as result.
@@ -1390,10 +1398,10 @@ pqGetCopyData3(PGconn *conn, char **buffer, int async)
if (msgLength < 0)
{
/*
* On end-of-copy, exit COPY_OUT mode and let caller read status
* with PQgetResult(). The normal case is that it's Copy Done,
* but we let parseInput read that. If error, we expect the state
* was already changed.
* On end-of-copy, exit COPY_OUT or COPY_BOTH mode and let caller
* read status with PQgetResult(). The normal case is that it's
* Copy Done, but we let parseInput read that. If error, we expect
* the state was already changed.
*/
if (msgLength == -1)
conn->asyncStatus = PGASYNC_BUSY;