Fixes compile errors

src/backend/distributed/database/database_sharding.c

@@ -24,6 +24,7 @@
 #include "distributed/deparse_shard_query.h"
 #include "distributed/listutils.h"
 #include "distributed/metadata_sync.h"
+#include "distributed/pooler/pgbouncer_manager.h"
 #include "distributed/remote_commands.h"
 #include "distributed/shared_library_init.h"
 #include "distributed/worker_transaction.h"
@@ -80,7 +81,7 @@ PreProcessUtilityInDatabaseShard(Node *parseTree, const char *queryString,
 	{
 		if (IsA(parseTree, CreatedbStmt))
 		{
-			char *command = DeparseCreatedbStmt(parseTree);
+			char *command = DeparseCreateDatabaseStmt(parseTree);
 			ExecuteCommandInControlDatabase(command);
 
 			/* command is fully delegated to control database */
@@ -88,7 +89,7 @@ PreProcessUtilityInDatabaseShard(Node *parseTree, const char *queryString,
 		}
 		else if (IsA(parseTree, DropdbStmt))
 		{
-			char *command = DeparseDropdbStmt(parseTree);
+			char *command = DeparseDropDatabaseStmt(parseTree);
 			ExecuteCommandInControlDatabase(command);
 
 			/* command is fully delegated to control database */

src/backend/distributed/deparser/deparse_database_stmts.c

@@ -196,18 +196,6 @@ DeparseAlterDatabaseSetStmt(Node *node)
 	return str.data;
 }
 
-char *
-DeparseCreateDatabaseSetStmt(Node *node)
-{
-	CreatedbStmt *stmt = castNode(CreatedbStmt, node);
-	StringInfoData str = {0};
-	initStringInfo(&str);
-
-	AppendCreatedbStmt(&str, stmt);
-
-	return str.data;
-}
-
 static void
 AppendCreatedbStmt(StringInfo buf, CreatedbStmt *stmt)
 {
@@ -338,18 +326,17 @@ AppendCreatedbStmt(StringInfo buf, CreatedbStmt *stmt)
 }
 
 char *
-DeparseDropDatabaseStmt(Node *node)
+DeparseCreateDatabaseStmt(Node *node)
 {
-	DropdbStmt *stmt = castNode(DropdbStmt, node);
-	StringInfoData str = { 0 };
+	CreatedbStmt *stmt = castNode(CreatedbStmt, node);
+	StringInfoData str = {0};
 	initStringInfo(&str);
 
-	AppendDropDatabaseStmt(&str, stmt);
+	AppendCreatedbStmt(&str, stmt);
 
 	return str.data;
 }
 
-
 static void
 AppendDropDatabaseStmt(StringInfo buf, DropdbStmt *stmt)
 {
@@ -373,3 +360,18 @@ AppendDropDatabaseStmt(StringInfo buf, DropdbStmt *stmt)
 		}
 	}
 }
+
+char *
+DeparseDropDatabaseStmt(Node *node)
+{
+	DropdbStmt *stmt = castNode(DropdbStmt, node);
+	StringInfoData str = { 0 };
+	initStringInfo(&str);
+
+	AppendDropDatabaseStmt(&str, stmt);
+
+	return str.data;
+}
+
+
+

src/backend/distributed/metadata/distobject.c

@@ -53,7 +53,7 @@
 static char * CreatePgDistObjectEntryCommand(const ObjectAddress *objectAddress);
 static int ExecuteCommandAsSuperuser(char *query, int paramCount, Oid *paramTypes,
 									 Datum *paramValues);
-static bool IsObjectDistributed(const ObjectAddress *address);
+bool IsObjectDistributed(const ObjectAddress *address);
 
 PG_FUNCTION_INFO_V1(citus_unmark_object_distributed);
 PG_FUNCTION_INFO_V1(master_unmark_object_distributed);
@@ -392,7 +392,7 @@ UnmarkObjectDistributed(const ObjectAddress *address)
  * IsObjectDistributed returns if the object addressed is already distributed in the
  * cluster. This performs a local indexed lookup in pg_dist_object.
  */
-static bool
+bool
 IsObjectDistributed(const ObjectAddress *address)
 {
 	ScanKeyData key[3];

src/backend/distributed/metadata/metadata_cache.c

@@ -182,6 +182,8 @@ typedef struct MetadataCacheData
 	Oid citusTaskStatusUnscheduledId;
 	Oid citusTaskStatusCancelledId;
 	Oid citusTaskStatusCancellingId;
+	Oid databaseShardRelationId;
+	Oid databaseShardPKeyIndexId;
 	Oid distRebalanceStrategyRelationId;
 	Oid distNodeRelationId;
 	Oid distNodeNodeIdIndexId;
@@ -2769,12 +2771,34 @@ DistRebalanceStrategyRelationId(void)
 	return MetadataCache.distRebalanceStrategyRelationId;
 }
 
+/* return oid of citus_catalog.database_sharding relation */
+Oid
+DatabaseShardRelationId(void)
+{
+	CachedRelationNamespaceLookup("database_shard", CitusCatalogNamespaceId(),
+								  &MetadataCache.databaseShardRelationId);
+
+	return MetadataCache.databaseShardRelationId;
+}
+
+
+/* return oid of citus_catalog.database_sharding primary key */
+Oid
+DatabaseShardPrimaryKeyIndexId(void)
+{
+	CachedRelationNamespaceLookup("database_shard_pkey", CitusCatalogNamespaceId(),
+								  &MetadataCache.databaseShardPKeyIndexId);
+
+	return MetadataCache.databaseShardPKeyIndexId;
+}
+
+
 
 /* return the oid of citus namespace */
 Oid
 CitusCatalogNamespaceId(void)
 {
-	CachedNamespaceLookup("citus", &MetadataCache.citusCatalogNamespaceId);
+	CachedNamespaceLookup("citus_catalog", &MetadataCache.citusCatalogNamespaceId);
 	return MetadataCache.citusCatalogNamespaceId;
 }
 
@@ -2805,12 +2829,14 @@ DistObjectRelationId(void)
 								 true);
 	if (!OidIsValid(MetadataCache.distObjectRelationId))
 	{
+		Oid citusNamespaceId = get_namespace_oid("citus", false);
+
 		/*
 		 * We can only ever reach here while we are creating/altering our extension before
 		 * the table is moved to pg_catalog.
 		 */
 		CachedRelationNamespaceLookupExtended("pg_dist_object",
-											  CitusCatalogNamespaceId(),
+											  citusNamespaceId,
 											  &MetadataCache.distObjectRelationId,
 											  false);
 	}

src/backend/distributed/shared_library_init.c

@@ -172,6 +172,8 @@ static GucStringAssignHook OldApplicationNameAssignHook = NULL;
  */
 static bool FinishedStartupCitusBackend = false;
 
+char *CitusMainDatabase = "postgres";
+
 static object_access_hook_type PrevObjectAccessHook = NULL;
 
 #if PG_VERSION_NUM >= PG_VERSION_15

src/include/distributed/commands/utility_hook.h

@@ -40,6 +40,7 @@ typedef enum
 extern PropSetCmdBehavior PropagateSetCommands;
 extern bool EnableDDLPropagation;
 extern int CreateObjectPropagationMode;
+extern bool EnableCreateDatabasePropagation;
 extern bool EnableCreateTypePropagation;
 extern bool EnableCreateRolePropagation;
 extern bool EnableAlterRolePropagation;

src/include/distributed/metadata_cache.h

@@ -247,6 +247,7 @@ extern Oid DistLocalGroupIdRelationId(void);
 extern Oid DistObjectRelationId(void);
 extern Oid DistEnabledCustomAggregatesId(void);
 extern Oid DistTenantSchemaRelationId(void);
+extern Oid DatabaseShardRelationId(void);
 
 /* index oids */
 extern Oid DistNodeNodeIdIndexId(void);
@@ -271,6 +272,7 @@ extern Oid DistObjectPrimaryKeyIndexId(void);
 extern Oid DistCleanupPrimaryKeyIndexId(void);
 extern Oid DistTenantSchemaPrimaryKeyIndexId(void);
 extern Oid DistTenantSchemaUniqueColocationIdIndexId(void);
+extern Oid DatabaseShardPrimaryKeyIndexId(void);
 
 /* sequence oids */
 extern Oid DistBackgroundJobJobIdSequenceId(void);

src/include/distributed/shared_library_init.h

@@ -17,6 +17,8 @@
 #define MAX_SHARD_COUNT 64000
 #define MAX_SHARD_REPLICATION_FACTOR 100
 
+extern char *CitusMainDatabase;
+
 extern PGDLLEXPORT ColumnarSupportsIndexAM_type extern_ColumnarSupportsIndexAM;
 extern PGDLLEXPORT CompressionTypeStr_type extern_CompressionTypeStr;
 extern PGDLLEXPORT IsColumnarTableAmTable_type extern_IsColumnarTableAmTable;