Binary upgrade:
authorBruce Momjian <bruce@momjian.us>
Thu, 24 Dec 2009 22:09:24 +0000 (22:09 +0000)
committerBruce Momjian <bruce@momjian.us>
Thu, 24 Dec 2009 22:09:24 +0000 (22:09 +0000)
Modify pg_dump --binary-upgrade and add backend support routines to
support the preservation of pg_type oids when doing a binary upgrade.
This allows user-defined composite types and arrays to be binary
upgraded.

src/backend/catalog/heap.c
src/backend/catalog/pg_type.c
src/backend/catalog/toasting.c
src/backend/commands/typecmds.c
src/bin/pg_dump/pg_dump.c
src/include/commands/typecmds.h

index 8b8fcea734321309cfe3fa9d01e3e9caa34d3dd1..0f33c525b611dac18adc3ea3947e7f112ea528e2 100644 (file)
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.361 2009/12/07 05:22:21 tgl Exp $
+ *   $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.362 2009/12/24 22:09:23 momjian Exp $
  *
  *
  * INTERFACE ROUTINES
@@ -1001,13 +1001,7 @@ heap_create_with_catalog(const char *relname,
    if (IsUnderPostmaster && (relkind == RELKIND_RELATION ||
                              relkind == RELKIND_VIEW ||
                              relkind == RELKIND_COMPOSITE_TYPE))
-   {
-       /* OK, so pre-assign a type OID for the array type */
-       Relation    pg_type = heap_open(TypeRelationId, AccessShareLock);
-
-       new_array_oid = GetNewOid(pg_type);
-       heap_close(pg_type, AccessShareLock);
-   }
+       new_array_oid = AssignTypeArrayOid();
 
    /*
     * Since defining a relation also defines a complex type, we add a new
index 8bdea061538c1a2300763fa979e69d5645a956ca..1f548cc94b6f5b763d9d3c7fb95c7b4397694aa0 100644 (file)
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/catalog/pg_type.c,v 1.127 2009/08/16 18:14:34 tgl Exp $
+ *   $PostgreSQL: pgsql/src/backend/catalog/pg_type.c,v 1.128 2009/12/24 22:09:23 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -32,6 +32,7 @@
 #include "utils/rel.h"
 #include "utils/syscache.h"
 
+Oid binary_upgrade_next_pg_type_oid = InvalidOid;
 
 /* ----------------------------------------------------------------
  *     TypeShellMake
@@ -119,6 +120,12 @@ TypeShellMake(const char *typeName, Oid typeNamespace, Oid ownerId)
     */
    tup = heap_form_tuple(tupDesc, values, nulls);
 
+   if (OidIsValid(binary_upgrade_next_pg_type_oid))
+   {
+       HeapTupleSetOid(tup, binary_upgrade_next_pg_type_oid);
+       binary_upgrade_next_pg_type_oid = InvalidOid;
+   }
+
    /*
     * insert the tuple in the relation and get the tuple's oid.
     */
@@ -409,10 +416,16 @@ TypeCreate(Oid newTypeOid,
                              values,
                              nulls);
 
-       /* Force the OID if requested by caller, else heap_insert does it */
+       /* Force the OID if requested by caller */
        if (OidIsValid(newTypeOid))
            HeapTupleSetOid(tup, newTypeOid);
-
+       else if (OidIsValid(binary_upgrade_next_pg_type_oid))
+       {
+           HeapTupleSetOid(tup, binary_upgrade_next_pg_type_oid);
+           binary_upgrade_next_pg_type_oid = InvalidOid;
+       }
+       /* else allow system to assign oid */
+       
        typeObjectId = simple_heap_insert(pg_type_desc, tup);
    }
 
index a8c2da66dc3ca764086f71d3f895f76069be0a9d..eef47dd53283d59b5223162de599d2b1d68551e6 100644 (file)
@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/catalog/toasting.c,v 1.22 2009/12/23 02:35:18 tgl Exp $
+ *   $PostgreSQL: pgsql/src/backend/catalog/toasting.c,v 1.23 2009/12/24 22:09:23 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -31,6 +31,7 @@
 #include "utils/builtins.h"
 #include "utils/syscache.h"
 
+Oid binary_upgrade_next_pg_type_toast_oid = InvalidOid;
 
 static bool create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
                   Datum reloptions, bool force);
@@ -121,6 +122,7 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
    Relation    class_rel;
    Oid         toast_relid;
    Oid         toast_idxid;
+   Oid         toast_typid = InvalidOid;
    Oid         namespaceid;
    char        toast_relname[NAMEDATALEN];
    char        toast_idxname[NAMEDATALEN];
@@ -199,11 +201,17 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
    else
        namespaceid = PG_TOAST_NAMESPACE;
 
+   if (OidIsValid(binary_upgrade_next_pg_type_toast_oid))
+   {
+       toast_typid = binary_upgrade_next_pg_type_toast_oid;
+       binary_upgrade_next_pg_type_toast_oid = InvalidOid;
+   }
+
    toast_relid = heap_create_with_catalog(toast_relname,
                                           namespaceid,
                                           rel->rd_rel->reltablespace,
                                           toastOid,
-                                          InvalidOid,
+                                          toast_typid,
                                           rel->rd_rel->relowner,
                                           tupdesc,
                                           NIL,
index a11825c8a912581fbce23686ddd5a6fab7365731..11990c0e106f7603fd8e9da22d4534f5b0aec6f6 100644 (file)
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/commands/typecmds.c,v 1.140 2009/12/19 00:47:57 momjian Exp $
+ *   $PostgreSQL: pgsql/src/backend/commands/typecmds.c,v 1.141 2009/12/24 22:09:23 momjian Exp $
  *
  * DESCRIPTION
  *   The "DefineFoo" routines take the parse tree and pick out the
@@ -74,6 +74,7 @@ typedef struct
    /* atts[] is of allocated length RelationGetNumberOfAttributes(rel) */
 } RelToCheck;
 
+Oid binary_upgrade_next_pg_type_array_oid = InvalidOid;
 
 static Oid findTypeInputFunction(List *procname, Oid typeOid);
 static Oid findTypeOutputFunction(List *procname, Oid typeOid);
@@ -143,7 +144,6 @@ DefineType(List *names, List *parameters)
    Oid         array_oid;
    Oid         typoid;
    Oid         resulttype;
-   Relation    pg_type;
    ListCell   *pl;
 
    /*
@@ -522,10 +522,7 @@ DefineType(List *names, List *parameters)
                       NameListToString(analyzeName));
 #endif
 
-   /* Preassign array type OID so we can insert it in pg_type.typarray */
-   pg_type = heap_open(TypeRelationId, AccessShareLock);
-   array_oid = GetNewOid(pg_type);
-   heap_close(pg_type, AccessShareLock);
+   array_oid = AssignTypeArrayOid();
 
    /*
     * now have TypeCreate do all the real work.
@@ -1101,7 +1098,6 @@ DefineEnum(CreateEnumStmt *stmt)
    AclResult   aclresult;
    Oid         old_type_oid;
    Oid         enumArrayOid;
-   Relation    pg_type;
 
    /* Convert list of names to a name and namespace */
    enumNamespace = QualifiedNameGetCreationNamespace(stmt->typeName,
@@ -1129,10 +1125,7 @@ DefineEnum(CreateEnumStmt *stmt)
                     errmsg("type \"%s\" already exists", enumName)));
    }
 
-   /* Preassign array type OID so we can insert it in pg_type.typarray */
-   pg_type = heap_open(TypeRelationId, AccessShareLock);
-   enumArrayOid = GetNewOid(pg_type);
-   heap_close(pg_type, AccessShareLock);
+   enumArrayOid = AssignTypeArrayOid();
 
    /* Create the pg_type entry */
    enumTypeOid =
@@ -1470,6 +1463,33 @@ findTypeAnalyzeFunction(List *procname, Oid typeOid)
    return procOid;
 }
 
+/*
+ * AssignTypeArrayOid
+ *
+ * Pre-assign the type's array OID for use in pg_type.typarray
+ */
+Oid
+AssignTypeArrayOid(void)
+{
+   Oid     type_array_oid;
+
+   /* Pre-assign the type's array OID for use in pg_type.typarray */
+   if (OidIsValid(binary_upgrade_next_pg_type_array_oid))
+   {
+       type_array_oid = binary_upgrade_next_pg_type_array_oid;
+       binary_upgrade_next_pg_type_array_oid = InvalidOid;
+   }
+   else
+   {
+       Relation    pg_type = heap_open(TypeRelationId, AccessShareLock);
+
+       type_array_oid = GetNewOid(pg_type);
+       heap_close(pg_type, AccessShareLock);
+   }
+
+   return type_array_oid;
+}
+
 
 /*-------------------------------------------------------------------
  * DefineCompositeType
index 8072d2df5e4e463ac5f166f2f3f3822a27ec37c2..47d2c4fcf404b99b70cdce7f194cda4fac713c0f 100644 (file)
@@ -12,7 +12,7 @@
  * by PostgreSQL
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.560 2009/12/23 04:10:50 momjian Exp $
+ *   $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.561 2009/12/24 22:09:23 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -196,6 +196,11 @@ static int dumpBlobComments(Archive *AH, void *arg);
 static void dumpDatabase(Archive *AH);
 static void dumpEncoding(Archive *AH);
 static void dumpStdStrings(Archive *AH);
+static void binary_upgrade_set_type_oids_by_type_oid(
+                   PQExpBuffer upgrade_buffer, Oid pg_type_oid);
+static bool binary_upgrade_set_type_oids_by_rel_oid(
+                   PQExpBuffer upgrade_buffer, Oid pg_rel_oid);
+static void binary_upgrade_clear_pg_type_toast_oid(PQExpBuffer upgrade_buffer);
 static const char *getAttrName(int attrnum, TableInfo *tblInfo);
 static const char *fmtCopyColumnList(const TableInfo *ti);
 static void do_sql_command(PGconn *conn, const char *query);
@@ -2176,6 +2181,131 @@ dumpBlobComments(Archive *AH, void *arg)
    return 1;
 }
 
+static void
+binary_upgrade_set_type_oids_by_type_oid(PQExpBuffer upgrade_buffer,
+                                              Oid pg_type_oid)
+{
+   PQExpBuffer upgrade_query = createPQExpBuffer();
+   int         ntups;
+   PGresult   *upgrade_res;
+   Oid         pg_type_array_oid;
+           
+   appendPQExpBuffer(upgrade_buffer, "\n-- For binary upgrade, must preserve pg_type oid\n");
+   appendPQExpBuffer(upgrade_buffer,
+       "SELECT binary_upgrade.set_next_pg_type_oid('%u'::pg_catalog.oid);\n\n",
+       pg_type_oid);
+
+   /* we only support old >= 8.3 for binary upgrades */
+   appendPQExpBuffer(upgrade_query,
+                     "SELECT typarray "
+                     "FROM pg_catalog.pg_type "
+                     "WHERE pg_type.oid = '%u'::pg_catalog.oid;",
+                     pg_type_oid);
+
+   upgrade_res = PQexec(g_conn, upgrade_query->data);
+   check_sql_result(upgrade_res, g_conn, upgrade_query->data, PGRES_TUPLES_OK);
+
+   /* Expecting a single result only */
+   ntups = PQntuples(upgrade_res);
+   if (ntups != 1)
+   {
+       write_msg(NULL, ngettext("query returned %d row instead of one: %s\n",
+                              "query returned %d rows instead of one: %s\n",
+                                ntups),
+                 ntups, upgrade_query->data);
+       exit_nicely();
+   }
+
+   pg_type_array_oid = atooid(PQgetvalue(upgrade_res, 0, PQfnumber(upgrade_res, "typarray")));
+
+   if (OidIsValid(pg_type_array_oid))
+   {
+       appendPQExpBuffer(upgrade_buffer,
+                           "\n-- For binary upgrade, must preserve pg_type array oid\n");
+       appendPQExpBuffer(upgrade_buffer,
+           "SELECT binary_upgrade.set_next_pg_type_array_oid('%u'::pg_catalog.oid);\n\n",
+           pg_type_array_oid);
+   }
+
+   PQclear(upgrade_res);
+   destroyPQExpBuffer(upgrade_query);
+}
+
+static bool
+binary_upgrade_set_type_oids_by_rel_oid(PQExpBuffer upgrade_buffer,
+                                              Oid pg_rel_oid)
+{
+   PQExpBuffer upgrade_query = createPQExpBuffer();
+   int         ntups;
+   PGresult   *upgrade_res;
+   Oid         pg_type_oid;
+   bool        toast_set = false;
+   
+   /* we only support old >= 8.3 for binary upgrades */
+   appendPQExpBuffer(upgrade_query,
+                     "SELECT c.reltype AS crel, t.reltype AS trel "
+                     "FROM pg_catalog.pg_class c "
+                     "LEFT JOIN pg_catalog.pg_class t ON "
+                     "  (c.reltoastrelid = t.oid) "
+                     "WHERE c.oid = '%u'::pg_catalog.oid;",
+                     pg_rel_oid);
+
+   upgrade_res = PQexec(g_conn, upgrade_query->data);
+   check_sql_result(upgrade_res, g_conn, upgrade_query->data, PGRES_TUPLES_OK);
+
+   /* Expecting a single result only */
+   ntups = PQntuples(upgrade_res);
+   if (ntups != 1)
+   {
+       write_msg(NULL, ngettext("query returned %d row instead of one: %s\n",
+                              "query returned %d rows instead of one: %s\n",
+                                ntups),
+                 ntups, upgrade_query->data);
+       exit_nicely();
+   }
+
+   pg_type_oid = atooid(PQgetvalue(upgrade_res, 0, PQfnumber(upgrade_res, "crel")));
+
+   binary_upgrade_set_type_oids_by_type_oid(upgrade_buffer, pg_type_oid);
+
+   if (!PQgetisnull(upgrade_res, 0, PQfnumber(upgrade_res, "trel")))
+   {
+       /* Toast tables do not have pg_type array rows */
+       Oid pg_type_toast_oid = atooid(PQgetvalue(upgrade_res, 0,
+                                       PQfnumber(upgrade_res, "trel")));
+
+       appendPQExpBuffer(upgrade_buffer, "\n-- For binary upgrade, must preserve pg_type toast oid\n");
+       appendPQExpBuffer(upgrade_buffer,
+           "SELECT binary_upgrade.set_next_pg_type_toast_oid('%u'::pg_catalog.oid);\n\n",
+           pg_type_toast_oid);
+
+       toast_set = true;
+   }
+
+   PQclear(upgrade_res);
+   destroyPQExpBuffer(upgrade_query);
+
+   return toast_set;
+}
+
+static void
+binary_upgrade_clear_pg_type_toast_oid(PQExpBuffer upgrade_buffer)
+{
+   /*
+    *  One complexity is that while the heap might now have a TOAST table,
+    *  the TOAST table might have been created long after creation when
+    *  the table was loaded with wide data.  For that reason, we clear
+    *  binary_upgrade_set_next_pg_type_toast_oid so it is not reused
+    *  by a later table.  Logically any later creation that needs a TOAST
+    *  table should have its own TOAST pg_type oid, but we are cautious.
+    */
+   appendPQExpBuffer(upgrade_buffer,
+       "\n-- For binary upgrade, clear toast oid because it might not have been needed\n");
+   appendPQExpBuffer(upgrade_buffer,
+       "SELECT binary_upgrade.set_next_pg_type_oid('%u'::pg_catalog.oid);\n\n",
+       InvalidOid);
+}
+
 /*
  * getNamespaces:
  *   read all namespaces in the system catalogs and return them in the
@@ -6428,6 +6558,10 @@ dumpEnumType(Archive *fout, TypeInfo *tyinfo)
                      fmtId(tyinfo->dobj.namespace->dobj.name));
    appendPQExpBuffer(delq, "%s;\n",
                      fmtId(tyinfo->dobj.name));
+
+   if (binary_upgrade)
+       binary_upgrade_set_type_oids_by_type_oid(q, tyinfo->dobj.catId.oid);
+
    appendPQExpBuffer(q, "CREATE TYPE %s AS ENUM (\n",
                      fmtId(tyinfo->dobj.name));
    for (i = 0; i < num; i++)
@@ -6723,6 +6857,10 @@ dumpBaseType(Archive *fout, TypeInfo *tyinfo)
    appendPQExpBuffer(delq, "%s CASCADE;\n",
                      fmtId(tyinfo->dobj.name));
 
+   /* We might already have a shell type, but setting pg_type_oid is harmless */
+   if (binary_upgrade)
+       binary_upgrade_set_type_oids_by_type_oid(q, tyinfo->dobj.catId.oid);
+
    appendPQExpBuffer(q,
                      "CREATE TYPE %s (\n"
                      "    INTERNALLENGTH = %s",
@@ -6892,6 +7030,9 @@ dumpDomain(Archive *fout, TypeInfo *tyinfo)
    else
        typdefault = NULL;
 
+   if (binary_upgrade)
+       binary_upgrade_set_type_oids_by_type_oid(q, tyinfo->dobj.catId.oid);
+
    appendPQExpBuffer(q,
                      "CREATE DOMAIN %s AS %s",
                      fmtId(tyinfo->dobj.name),
@@ -7002,6 +7143,9 @@ dumpCompositeType(Archive *fout, TypeInfo *tyinfo)
    i_attname = PQfnumber(res, "attname");
    i_atttypdefn = PQfnumber(res, "atttypdefn");
 
+   if (binary_upgrade)
+       binary_upgrade_set_type_oids_by_type_oid(q, tyinfo->dobj.catId.oid);
+
    appendPQExpBuffer(q, "CREATE TYPE %s AS (",
                      fmtId(tyinfo->dobj.name));
 
@@ -7191,6 +7335,10 @@ dumpShellType(Archive *fout, ShellTypeInfo *stinfo)
     * after it's filled in, otherwise the backend complains.
     */
 
+   if (binary_upgrade)
+       binary_upgrade_set_type_oids_by_type_oid(q,
+                               stinfo->baseType->dobj.catId.oid);
+
    appendPQExpBuffer(q, "CREATE TYPE %s;\n",
                      fmtId(stinfo->dobj.name));
 
@@ -10226,10 +10374,15 @@ dumpTableSchema(Archive *fout, TableInfo *tbinfo)
    char       *storage;
    int         j,
                k;
-
+   bool        toast_set = false;
+   
    /* Make sure we are in proper schema */
    selectSourceSchema(tbinfo->dobj.namespace->dobj.name);
 
+   if (binary_upgrade)
+       toast_set = binary_upgrade_set_type_oids_by_rel_oid(q,
+                                               tbinfo->dobj.catId.oid);
+
    /* Is it a table or a view? */
    if (tbinfo->relkind == RELKIND_VIEW)
    {
@@ -10606,6 +10759,9 @@ dumpTableSchema(Archive *fout, TableInfo *tbinfo)
        }
    }
 
+   if (binary_upgrade && toast_set)
+       binary_upgrade_clear_pg_type_toast_oid(q);
+
    ArchiveEntry(fout, tbinfo->dobj.catId, tbinfo->dobj.dumpId,
                 tbinfo->dobj.name,
                 tbinfo->dobj.namespace->dobj.name,
@@ -10617,6 +10773,7 @@ dumpTableSchema(Archive *fout, TableInfo *tbinfo)
                 tbinfo->dobj.dependencies, tbinfo->dobj.nDeps,
                 NULL, NULL);
 
+
    /* Dump Table Comments */
    dumpTableComment(fout, tbinfo, reltypename);
 
@@ -11235,6 +11392,10 @@ dumpSequence(Archive *fout, TableInfo *tbinfo)
                          fmtId(tbinfo->dobj.name));
 
        resetPQExpBuffer(query);
+
+       if (binary_upgrade)
+           binary_upgrade_set_type_oids_by_rel_oid(query, tbinfo->dobj.catId.oid);
+
        appendPQExpBuffer(query,
                          "CREATE SEQUENCE %s\n",
                          fmtId(tbinfo->dobj.name));
@@ -11270,6 +11431,8 @@ dumpSequence(Archive *fout, TableInfo *tbinfo)
 
        appendPQExpBuffer(query, ";\n");
 
+       /* binary_upgrade:  no need to clear TOAST table oid */
+       
        ArchiveEntry(fout, tbinfo->dobj.catId, tbinfo->dobj.dumpId,
                     tbinfo->dobj.name,
                     tbinfo->dobj.namespace->dobj.name,
index 64d533e3cc0be49ecfbb53aaa936da807b35ead8..b2dad6725b6f177ade698b3f117e30fafbbfabe8 100644 (file)
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/commands/typecmds.h,v 1.25 2009/01/01 17:23:58 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/commands/typecmds.h,v 1.26 2009/12/24 22:09:24 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -25,6 +25,7 @@ extern void RemoveTypeById(Oid typeOid);
 extern void DefineDomain(CreateDomainStmt *stmt);
 extern void DefineEnum(CreateEnumStmt *stmt);
 extern Oid DefineCompositeType(const RangeVar *typevar, List *coldeflist);
+extern Oid AssignTypeArrayOid(void);
 
 extern void AlterDomainDefault(List *names, Node *defaultRaw);
 extern void AlterDomainNotNull(List *names, bool notNull);