Fix pg_restore to properly discard COPY data when trying to continue
after an error in a COPY statement. Formerly it thought the COPY data was SQL commands, and got quite confused. Stephen Frost
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@ -15,7 +15,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_archiver.c,v 1.119 2006/01/21 02:16:20 momjian Exp $
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* $PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_archiver.c,v 1.120 2006/02/05 20:58:47 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -330,10 +330,15 @@ RestoreArchive(Archive *AHX, RestoreOptions *ropt)
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* with libpq.
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*/
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if (te->copyStmt && strlen(te->copyStmt) > 0)
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{
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ahprintf(AH, "%s", te->copyStmt);
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AH->writingCopyData = true;
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}
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(*AH->PrintTocDataPtr) (AH, te, ropt);
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AH->writingCopyData = false;
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_enableTriggersIfNecessary(AH, te, ropt);
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}
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}
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@ -17,7 +17,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_archiver.h,v 1.68 2005/10/15 02:49:38 momjian Exp $
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* $PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_archiver.h,v 1.69 2006/02/05 20:58:47 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -239,7 +239,8 @@ typedef struct _archiveHandle
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PGconn *connection;
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int connectToDB; /* Flag to indicate if direct DB connection is
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* required */
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int pgCopyIn; /* Currently in libpq 'COPY IN' mode. */
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bool writingCopyData; /* True when we are sending COPY data */
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bool pgCopyIn; /* Currently in libpq 'COPY IN' mode. */
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PQExpBuffer pgCopyBuf; /* Left-over data from incomplete lines in
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* COPY IN */
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@ -5,7 +5,7 @@
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* Implements the basic DB functions used by the archiver.
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_db.c,v 1.66 2005/10/15 02:49:38 momjian Exp $
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* $PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_db.c,v 1.67 2006/02/05 20:58:47 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -302,7 +302,7 @@ ExecuteSqlCommand(ArchiveHandle *AH, PQExpBuffer qry, char *desc)
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{
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if (PQresultStatus(res) == PGRES_COPY_IN)
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{
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AH->pgCopyIn = 1;
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AH->pgCopyIn = true;
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}
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else
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{
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@ -383,13 +383,12 @@ _sendCopyLine(ArchiveHandle *AH, char *qry, char *eos)
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appendPQExpBuffer(AH->pgCopyBuf, "%s\n", qry);
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isEnd = (strcmp(AH->pgCopyBuf->data, "\\.\n") == 0);
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/*---------
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* fprintf(stderr, "Sending '%s' via
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* COPY (at end = %d)\n\n", AH->pgCopyBuf->data, isEnd);
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*---------
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/*
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* Note that we drop the data on the floor if libpq has failed to
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* enter COPY mode; this allows us to behave reasonably when trying
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* to continue after an error in a COPY command.
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*/
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if (PQputline(AH->connection, AH->pgCopyBuf->data) != 0)
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if (AH->pgCopyIn && PQputline(AH->connection, AH->pgCopyBuf->data) != 0)
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die_horribly(AH, modulename, "error returned by PQputline\n");
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resetPQExpBuffer(AH->pgCopyBuf);
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@ -400,10 +399,10 @@ _sendCopyLine(ArchiveHandle *AH, char *qry, char *eos)
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if (isEnd)
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{
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if (PQendcopy(AH->connection) != 0)
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if (AH->pgCopyIn && PQendcopy(AH->connection) != 0)
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die_horribly(AH, modulename, "error returned by PQendcopy\n");
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AH->pgCopyIn = 0;
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AH->pgCopyIn = false;
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}
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return qry + loc + 1;
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@ -615,7 +614,18 @@ ExecuteSqlCommandBuf(ArchiveHandle *AH, void *qryv, size_t bufLen)
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/* Could switch between command and COPY IN mode at each line */
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while (qry < eos)
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{
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if (AH->pgCopyIn)
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/*
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* If libpq is in CopyIn mode *or* if the archive structure shows we
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* are sending COPY data, treat the data as COPY data. The pgCopyIn
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* check is only needed for backwards compatibility with ancient
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* archive files that might just issue a COPY command without marking
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* it properly. Note that in an archive entry that has a copyStmt,
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* all data up to the end of the entry will go to _sendCopyLine, and
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* therefore will be dropped if libpq has failed to enter COPY mode.
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* Also, if a "\." data terminator is found, anything remaining in the
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* archive entry will be dropped.
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*/
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if (AH->pgCopyIn || AH->writingCopyData)
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qry = _sendCopyLine(AH, qry, eos);
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else
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qry = _sendSQLLine(AH, qry, eos);
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