PROXY:atomic_counter_sub(counter_name, value)

Subtracts a value from the specified atomic counter name.

Syntax

PROXY:atomic_counter_sub(counter_name, value);

Arguments

Name	Description
counter_name	A Lua string as the name of the counter. This parameter is mandatory.
value	A Lua number to be subtracted from the counter. This cannot exceed the current counter value as the counter cannot be a negative number.

Events

All events except: PERSISTENCE, POST_PERSIST.

Example

when HTTP_REQUEST {
       counter_name = "DemoCounter1"
       value = 10
	ret = PROXY:atomic_counter_sub(counter_name, value)
       if ret then
	debug("===>>atomic_counter_sub success: [%s]=[%d]\n", counter_name, value)
       else
	debug("===>>atomic_counter_sub failed: [%s]=[%d]\n", counter_name, value)
       end
}

Supported Version

FortiADC version 7.6.0 and later.