1 files changed, 120 insertions, 0 deletions
diff --git a/contrib/pg_walinspect/sql/pg_walinspect.sql b/contrib/pg_walinspect/sql/pg_walinspect.sql
new file mode 100644
index 0000000..1b265ea
--- /dev/null
+++ b/contrib/pg_walinspect/sql/pg_walinspect.sql
@@ -0,0 +1,120 @@
+CREATE EXTENSION pg_walinspect;
+
+-- Make sure checkpoints don't interfere with the test.
+SELECT 'init' FROM pg_create_physical_replication_slot('regress_pg_walinspect_slot', true, false);
+
+CREATE TABLE sample_tbl(col1 int, col2 int);
+
+SELECT pg_current_wal_lsn() AS wal_lsn1 \gset
+
+INSERT INTO sample_tbl SELECT * FROM generate_series(1, 2);
+
+SELECT pg_current_wal_lsn() AS wal_lsn2 \gset
+
+INSERT INTO sample_tbl SELECT * FROM generate_series(1, 2);
+
+-- ===================================================================
+-- Tests for input validation
+-- ===================================================================
+
+SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info(:'wal_lsn2', :'wal_lsn1'); -- ERROR
+
+SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats(:'wal_lsn2', :'wal_lsn1'); -- ERROR
+
+-- ===================================================================
+-- Tests for all function executions
+-- ===================================================================
+
+SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_record_info(:'wal_lsn1');
+
+SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info(:'wal_lsn1', :'wal_lsn2');
+
+SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info_till_end_of_wal(:'wal_lsn1');
+
+SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats(:'wal_lsn1', :'wal_lsn2');
+
+SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats_till_end_of_wal(:'wal_lsn1');
+
+-- ===================================================================
+-- Test for filtering out WAL records of a particular table
+-- ===================================================================
+
+SELECT oid AS sample_tbl_oid FROM pg_class WHERE relname = 'sample_tbl' \gset
+
+SELECT COUNT(*) >= 1 AS ok FROM pg_get_wal_records_info(:'wal_lsn1', :'wal_lsn2')
+			WHERE block_ref LIKE concat('%', :'sample_tbl_oid', '%') AND resource_manager = 'Heap';
+
+-- ===================================================================
+-- Test for filtering out WAL records based on resource_manager and
+-- record_type
+-- ===================================================================
+
+SELECT COUNT(*) >= 1 AS ok FROM pg_get_wal_records_info(:'wal_lsn1', :'wal_lsn2')
+			WHERE resource_manager = 'Heap' AND record_type = 'INSERT';
+
+-- ===================================================================
+-- Tests for permissions
+-- ===================================================================
+CREATE ROLE regress_pg_walinspect;
+
+SELECT has_function_privilege('regress_pg_walinspect',
+  'pg_get_wal_record_info(pg_lsn)', 'EXECUTE'); -- no
+
+SELECT has_function_privilege('regress_pg_walinspect',
+  'pg_get_wal_records_info(pg_lsn, pg_lsn) ', 'EXECUTE'); -- no
+
+SELECT has_function_privilege('regress_pg_walinspect',
+  'pg_get_wal_stats(pg_lsn, pg_lsn, boolean) ', 'EXECUTE'); -- no
+
+-- Functions accessible by users with role pg_read_server_files
+
+GRANT pg_read_server_files TO regress_pg_walinspect;
+
+SELECT has_function_privilege('regress_pg_walinspect',
+  'pg_get_wal_record_info(pg_lsn)', 'EXECUTE'); -- yes
+
+SELECT has_function_privilege('regress_pg_walinspect',
+  'pg_get_wal_records_info(pg_lsn, pg_lsn) ', 'EXECUTE'); -- yes
+
+SELECT has_function_privilege('regress_pg_walinspect',
+  'pg_get_wal_stats(pg_lsn, pg_lsn, boolean) ', 'EXECUTE'); -- yes
+
+REVOKE pg_read_server_files FROM regress_pg_walinspect;
+
+-- Superuser can grant execute to other users
+GRANT EXECUTE ON FUNCTION pg_get_wal_record_info(pg_lsn)
+  TO regress_pg_walinspect;
+
+GRANT EXECUTE ON FUNCTION pg_get_wal_records_info(pg_lsn, pg_lsn)
+  TO regress_pg_walinspect;
+
+GRANT EXECUTE ON FUNCTION pg_get_wal_stats(pg_lsn, pg_lsn, boolean)
+  TO regress_pg_walinspect;
+
+SELECT has_function_privilege('regress_pg_walinspect',
+  'pg_get_wal_record_info(pg_lsn)', 'EXECUTE'); -- yes
+
+SELECT has_function_privilege('regress_pg_walinspect',
+  'pg_get_wal_records_info(pg_lsn, pg_lsn) ', 'EXECUTE'); -- yes
+
+SELECT has_function_privilege('regress_pg_walinspect',
+  'pg_get_wal_stats(pg_lsn, pg_lsn, boolean) ', 'EXECUTE'); -- yes
+
+REVOKE EXECUTE ON FUNCTION pg_get_wal_record_info(pg_lsn)
+  FROM regress_pg_walinspect;
+
+REVOKE EXECUTE ON FUNCTION pg_get_wal_records_info(pg_lsn, pg_lsn)
+  FROM regress_pg_walinspect;
+
+REVOKE EXECUTE ON FUNCTION pg_get_wal_stats(pg_lsn, pg_lsn, boolean)
+  FROM regress_pg_walinspect;
+
+-- ===================================================================
+-- Clean up
+-- ===================================================================
+
+DROP ROLE regress_pg_walinspect;
+
+SELECT pg_drop_replication_slot('regress_pg_walinspect_slot');
+
+DROP TABLE sample_tbl;