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Add pg_dump --binary-upgrade flag to be used by binary upgrade

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utilities.

The new code allows transfer of dropped column information to the
upgraded server.
This commit is contained in:
Bruce Momjian 2009-02-17 15:41:50 +00:00
parent 82aea0efe8
commit 6883c54a62
5 changed files with 103 additions and 11 deletions
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7
doc/src/sgml/ref/pg_dump.sgml
View File

@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/pg_dump.sgml,v 1.109 2009/02/10 00:55:21 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/pg_dump.sgml,v 1.110 2009/02/17 15:41:50 momjian Exp $
PostgreSQL documentation
-->
@ -827,6 +827,11 @@ CREATE DATABASE foo WITH TEMPLATE template0;
editing of the dump file might be required.
</para>
<para>
<application>pg_dump</application> also supports a
<literal>--binary-upgrade</> option for upgrade utility usage.
</para>
</refsect1>
<refsect1 id="pg-dump-examples">

7
doc/src/sgml/ref/pg_dumpall.sgml
View File

@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/pg_dumpall.sgml,v 1.75 2009/02/07 14:31:30 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/pg_dumpall.sgml,v 1.76 2009/02/17 15:41:50 momjian Exp $
PostgreSQL documentation
-->
@ -489,6 +489,11 @@ PostgreSQL documentation
locations.
</para>
<para>
<application>pg_dump</application> also supports a
<literal>--binary-upgrade</> option for upgrade utility usage.
</para>
</refsect1>

88
src/bin/pg_dump/pg_dump.c
View File

@ -12,7 +12,7 @@
* by PostgreSQL
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.521 2009/02/16 23:06:55 momjian Exp $
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.522 2009/02/17 15:41:50 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -99,6 +99,8 @@ static SimpleOidList table_exclude_oids = {NULL, NULL};
/* default, if no "inclusion" switches appear, is to dump everything */
static bool include_everything = true;
static int binary_upgrade = 0;
char g_opaque_type[10]; /* name for the opaque type */
/* placeholders for the delimiters for comments */
@ -236,7 +238,8 @@ main(int argc, char **argv)
static int outputNoTablespaces = 0;
static int use_setsessauth = 0;
static struct option long_options[] = {
struct option long_options[] = {
{"binary-upgrade", no_argument, &binary_upgrade, 1}, /* not documented */
{"data-only", no_argument, NULL, 'a'},
{"blobs", no_argument, NULL, 'b'},
{"clean", no_argument, NULL, 'c'},
@ -4611,6 +4614,8 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
int i_attnotnull;
int i_atthasdef;
int i_attisdropped;
int i_attlen;
int i_attalign;
int i_attislocal;
PGresult *res;
int ntups;
@ -4655,7 +4660,7 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
appendPQExpBuffer(q, "SELECT a.attnum, a.attname, a.atttypmod, "
"a.attstattarget, a.attstorage, t.typstorage, "
"a.attnotnull, a.atthasdef, a.attisdropped, "
"a.attislocal, "
"a.attlen, a.attalign, a.attislocal, "
"pg_catalog.format_type(t.oid,a.atttypmod) AS atttypname "
"FROM pg_catalog.pg_attribute a LEFT JOIN pg_catalog.pg_type t "
"ON a.atttypid = t.oid "
@ -4674,7 +4679,8 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
appendPQExpBuffer(q, "SELECT a.attnum, a.attname, "
"a.atttypmod, -1 AS attstattarget, a.attstorage, "
"t.typstorage, a.attnotnull, a.atthasdef, "
"false AS attisdropped, false AS attislocal, "
"false AS attisdropped, 0 AS attlen, "
"' ' AS attalign, false AS attislocal, "
"format_type(t.oid,a.atttypmod) AS atttypname "
"FROM pg_attribute a LEFT JOIN pg_type t "
"ON a.atttypid = t.oid "
@ -4690,7 +4696,8 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
"-1 AS attstattarget, attstorage, "
"attstorage AS typstorage, "
"attnotnull, atthasdef, false AS attisdropped, "
"false AS attislocal, "
"0 AS attlen, ' ' AS attalign, "
"false AS attislocal, "
"(SELECT typname FROM pg_type WHERE oid = atttypid) AS atttypname "
"FROM pg_attribute a "
"WHERE attrelid = '%u'::oid "
@ -4714,6 +4721,8 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
i_attnotnull = PQfnumber(res, "attnotnull");
i_atthasdef = PQfnumber(res, "atthasdef");
i_attisdropped = PQfnumber(res, "attisdropped");
i_attlen = PQfnumber(res, "attlen");
i_attalign = PQfnumber(res, "attalign");
i_attislocal = PQfnumber(res, "attislocal");
tbinfo->numatts = ntups;
@ -4724,6 +4733,8 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
tbinfo->attstorage = (char *) malloc(ntups * sizeof(char));
tbinfo->typstorage = (char *) malloc(ntups * sizeof(char));
tbinfo->attisdropped = (bool *) malloc(ntups * sizeof(bool));
tbinfo->attlen = (int *) malloc(ntups * sizeof(int));
tbinfo->attalign = (char *) malloc(ntups * sizeof(char));
tbinfo->attislocal = (bool *) malloc(ntups * sizeof(bool));
tbinfo->notnull = (bool *) malloc(ntups * sizeof(bool));
tbinfo->attrdefs = (AttrDefInfo **) malloc(ntups * sizeof(AttrDefInfo *));
@ -4747,6 +4758,8 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
tbinfo->attstorage[j] = *(PQgetvalue(res, j, i_attstorage));
tbinfo->typstorage[j] = *(PQgetvalue(res, j, i_typstorage));
tbinfo->attisdropped[j] = (PQgetvalue(res, j, i_attisdropped)[0] == 't');
tbinfo->attlen[j] = atoi(PQgetvalue(res, j, i_attlen));
tbinfo->attalign[j] = *(PQgetvalue(res, j, i_attalign));
tbinfo->attislocal[j] = (PQgetvalue(res, j, i_attislocal)[0] == 't');
tbinfo->notnull[j] = (PQgetvalue(res, j, i_attnotnull)[0] == 't');
tbinfo->attrdefs[j] = NULL; /* fix below */
@ -4760,6 +4773,21 @@ getTableAttrs(TableInfo *tblinfo, int numTables)
PQclear(res);
/*
* ALTER TABLE DROP COLUMN clears pg_attribute.atttypid, so we
* set the column data type to 'TEXT; we will later drop the
* column.
*/
if (binary_upgrade)
{
for (j = 0; j < ntups; j++)
{
if (tbinfo->attisdropped[j])
tbinfo->atttypnames[j] = strdup("TEXT");
}
}
/*
* Get info about column defaults
*/
@ -9680,7 +9708,8 @@ dumpTableSchema(Archive *fout, TableInfo *tbinfo)
for (j = 0; j < tbinfo->numatts; j++)
{
/* Is this one of the table's own attrs, and not dropped ? */
if (!tbinfo->inhAttrs[j] && !tbinfo->attisdropped[j])
if (!tbinfo->inhAttrs[j] &&
(!tbinfo->attisdropped[j] || binary_upgrade))
{
/* Format properly if not first attr */
if (actual_atts > 0)
@ -9786,6 +9815,53 @@ dumpTableSchema(Archive *fout, TableInfo *tbinfo)
appendPQExpBuffer(q, ";\n");
/*
* For binary-compatible heap files, we create dropped columns
* above and drop them here.
*/
if (binary_upgrade)
{
for (j = 0; j < tbinfo->numatts; j++)
{
if (tbinfo->attisdropped[j])
{
appendPQExpBuffer(q, "ALTER TABLE ONLY %s ",
fmtId(tbinfo->dobj.name));
appendPQExpBuffer(q, "DROP COLUMN %s;\n",
fmtId(tbinfo->attnames[j]));
/*
* ALTER TABLE DROP COLUMN clears pg_attribute.atttypid,
* so we have to set pg_attribute.attlen and
* pg_attribute.attalign values because that is what
* is used to skip over dropped columns in the heap tuples.
* We have atttypmod, but it seems impossible to know the
* correct data type that will yield pg_attribute values
* that match the old installation.
* See comment in backend/catalog/heap.c::RemoveAttributeById()
*/
appendPQExpBuffer(q, "\n-- For binary upgrade, recreate dropped column's length and alignment.\n");
appendPQExpBuffer(q, "UPDATE pg_attribute\n"
"SET attlen = %d, "
"attalign = '%c'\n"
"WHERE attname = '%s'\n"
" AND attrelid = \n"
" (\n"
" SELECT oid\n"
" FROM pg_class\n"
" WHERE relnamespace = "
"(SELECT oid FROM pg_namespace "
"WHERE nspname = CURRENT_SCHEMA)\n"
" AND relname = '%s'\n"
" );",
tbinfo->attlen[j],
tbinfo->attalign[j],
tbinfo->attnames[j],
tbinfo->dobj.name);
}
}
}
/* Loop dumping statistics and storage statements */
for (j = 0; j < tbinfo->numatts; j++)
{

4
src/bin/pg_dump/pg_dump.h
View File

@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.h,v 1.150 2009/02/02 19:31:39 alvherre Exp $
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.h,v 1.151 2009/02/17 15:41:50 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -245,6 +245,8 @@ typedef struct _tableInfo
char *attstorage; /* attribute storage scheme */
char *typstorage; /* type storage scheme */
bool *attisdropped; /* true if attr is dropped; don't dump it */
int *attlen; /* attribute length, used by binary_upgrade */
char *attalign; /* attribute align, used by binary_upgrade */
bool *attislocal; /* true if attr has local definition */
/*

8
src/bin/pg_dump/pg_dumpall.c
View File

@ -6,7 +6,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dumpall.c,v 1.113 2009/01/22 20:16:08 tgl Exp $
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dumpall.c,v 1.114 2009/02/17 15:41:50 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -90,8 +90,10 @@ main(int argc, char *argv[])
const char *std_strings;
int c,
ret;
int binary_upgrade = 0;
static struct option long_options[] = {
struct option long_options[] = {
{"binary-upgrade", no_argument, &binary_upgrade, 1}, /* not documented */
{"data-only", no_argument, NULL, 'a'},
{"clean", no_argument, NULL, 'c'},
{"inserts", no_argument, NULL, 'd'},
@ -310,6 +312,8 @@ main(int argc, char *argv[])
}
/* Add long options to the pg_dump argument list */
if (binary_upgrade)
appendPQExpBuffer(pgdumpopts, " --binary-upgrade");
if (disable_dollar_quoting)
appendPQExpBuffer(pgdumpopts, " --disable-dollar-quoting");
if (disable_triggers)