Return postgis version in diagnostics info (WIP)

scripts-available/CDB_FederatedServerDiagnostics.sql

@@ -41,6 +41,17 @@ $$
 LANGUAGE PLPGSQL VOLATILE PARALLEL UNSAFE;
 
 
+CREATE OR REPLACE FUNCTION @extschema@.__CDB_FS_Foreign_PostGIS_Version_PG(server_internal name)
+RETURNS text
+AS $$
+BEGIN
+    -- TODO implement
+    RETURN '4.0';
+END
+$$
+LANGUAGE PLPGSQL VOLATILE PARALLEL UNSAFE;
+
+
 --
 -- Collect and return diagnostics info from a remote PG into a jsonb
 --
@@ -48,9 +59,13 @@ CREATE OR REPLACE FUNCTION @extschema@.__CDB_FS_Server_Diagnostics_PG(server_int
 RETURNS jsonb
 AS $$
 DECLARE
-    remote_server_version text := @extschema@.__CDB_FS_Foreign_Server_Version_PG(server_internal);
+    remote_server_version  text := @extschema@.__CDB_FS_Foreign_Server_Version_PG(server_internal);
+    remote_postgis_version text := @extschema@.__CDB_FS_Foreign_PostGIS_Version_PG(server_internal);
 BEGIN
-    RETURN jsonb_build_object('server_version', remote_server_version);
+    RETURN jsonb_build_object(
+        'server_version', remote_server_version,
+        'postgis_version', remote_postgis_version
+    );
 END
 $$
 LANGUAGE PLPGSQL VOLATILE PARALLEL UNSAFE;