[#3] OS/CPU/Memory information

sql/pgexporter_ext--0.1.0.sql

@@ -1,11 +1,20 @@
 CREATE FUNCTION pgexporter_used_space(text) RETURNS bigint
-AS '$libdir/pgexporter_ext'
-LANGUAGE C IMMUTABLE STRICT;
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT;
+
+REVOKE ALL ON FUNCTION pgexporter_used_space FROM PUBLIC;
+GRANT EXECUTE ON FUNCTION pgexporter_used_space TO pg_monitor;
 
 CREATE FUNCTION pgexporter_free_space(text) RETURNS bigint
-AS '$libdir/pgexporter_ext'
-LANGUAGE C IMMUTABLE STRICT;
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT;
+
+REVOKE ALL ON FUNCTION pgexporter_free_space FROM PUBLIC;
+GRANT EXECUTE ON FUNCTION pgexporter_free_space TO pg_monitor;
 
 CREATE FUNCTION pgexporter_total_space(text) RETURNS bigint
-AS '$libdir/pgexporter_ext'
-LANGUAGE C IMMUTABLE STRICT;
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT;
+
+REVOKE ALL ON FUNCTION pgexporter_total_space FROM PUBLIC;
+GRANT EXECUTE ON FUNCTION pgexporter_total_space TO pg_monitor;

sql/pgexporter_ext--0.1.1--0.2.0.sql

@@ -0,0 +1,52 @@
+CREATE FUNCTION pgexporter_version() RETURNS text
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT;
+
+REVOKE ALL ON FUNCTION pgexporter_version FROM PUBLIC;
+GRANT EXECUTE ON FUNCTION pgexporter_version TO pg_monitor;
+
+CREATE FUNCTION pgexporter_os_info(OUT name text,
+                                   OUT version text,
+                                   OUT architecture text,
+                                   OUT host_name text,
+                                   OUT domain_name text,
+                                   OUT process_count int,
+                                   OUT uptime_seconds int
+)
+RETURNS SETOF record
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT;
+
+REVOKE ALL ON FUNCTION pgexporter_os_info FROM PUBLIC;
+GRANT EXECUTE ON FUNCTION pgexporter_os_info TO pg_monitor;
+
+CREATE FUNCTION pgexporter_cpu_info(OUT vendor text,
+                                    OUT model_name text,
+                                    OUT number_of_cores int,
+                                    OUT clock_speed_hz int8,
+                                    OUT l1dcache_size int,
+                                    OUT l1icache_size int,
+                                    OUT l2cache_size int,
+                                    OUT l3cache_size int
+)
+RETURNS SETOF record
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT;
+
+REVOKE ALL ON FUNCTION pgexporter_cpu_info FROM PUBLIC;
+GRANT EXECUTE ON FUNCTION pgexporter_cpu_info TO pg_monitor;
+
+CREATE FUNCTION pgexporter_memory_info(OUT total_memory int8,
+                                       OUT used_memory int8,
+                                       OUT free_memory int8,
+                                       OUT swap_total int8,
+                                       OUT swap_used int8,
+                                       OUT swap_free int8,
+                                       OUT cache_total int8
+)
+RETURNS SETOF record
+AS 'MODULE_PATHNAME'
+LANGUAGE C STRICT;
+
+REVOKE ALL ON FUNCTION pgexporter_memory_info FROM PUBLIC;
+GRANT EXECUTE ON FUNCTION pgexporter_memory_info TO pg_monitor;

src/include/utils.h

@@ -61,6 +61,14 @@ pgexporter_ext_free_space(char* path);
 unsigned long
 pgexporter_ext_total_space(char* path);
 
+/**
+ * Trim whitespace from a string
+ * @param s The string
+ * @return The result
+ */
+char*
+pgexporter_ext_trim_whitespace(char* s);
+
 #ifdef __cplusplus
 }
 #endif