object_access_hook

中文定义与说明

插件提供与这些签名之一或两者匹配的钩子函数。

以下中文为本站依据所列 PostgreSQL 源码注释编译的说明。

接口声明

typedef void (*object_access_hook_type) (ObjectAccessType access, Oid classId, Oid objectId, int subId, void *arg);
extern PGDLLIMPORT object_access_hook_type object_access_hook;

源码说明

对象访问钩子，为安全和日志插件提供基础设施。

调用位置

• src/backend/catalog/objectaccess.c:43
• src/backend/catalog/objectaccess.c:65
• src/backend/catalog/objectaccess.c:81
• src/backend/catalog/objectaccess.c:104
• src/backend/catalog/objectaccess.c:126
• src/backend/catalog/objectaccess.c:144

核心调用上下文：src/backend/catalog/objectaccess.c:37–51

	/* caller should check, but just in case... */
	Assert(object_access_hook != NULL);

	memset(&pc_arg, 0, sizeof(ObjectAccessPostCreate));
	pc_arg.is_internal = is_internal;

	(*object_access_hook) (OAT_POST_CREATE,
						   classId, objectId, subId,
						   &pc_arg);
}

/*
 * RunObjectDropHook
 *
 * OAT_DROP object ID based event hook entrypoint

核心调用上下文：src/backend/catalog/objectaccess.c:59–73

	/* caller should check, but just in case... */
	Assert(object_access_hook != NULL);

	memset(&drop_arg, 0, sizeof(ObjectAccessDrop));
	drop_arg.dropflags = dropflags;

	(*object_access_hook) (OAT_DROP,
						   classId, objectId, subId,
						   &drop_arg);
}

/*
 * RunObjectTruncateHook
 *
 * OAT_TRUNCATE object ID based event hook entrypoint

核心调用上下文：src/backend/catalog/objectaccess.c:75–89

void
RunObjectTruncateHook(Oid objectId)
{
	/* caller should check, but just in case... */
	Assert(object_access_hook != NULL);

	(*object_access_hook) (OAT_TRUNCATE,
						   RelationRelationId, objectId, 0,
						   NULL);
}

/*
 * RunObjectPostAlterHook
 *
 * OAT_POST_ALTER object ID based event hook entrypoint