PROXY:atomic_counter_create()

Creates an atomic counter with a specific name. This counter is sharable among different processes of one virtual server. The creator process has the ownership. All the other processes within the same VS can perform all the operations except destroy. Each VS can create up to 255 counters.

Syntax

PROXY:atomic_counter_create(counter_name);

Arguments

Name	Description
counter_name	A Lua string as the name of the counter. This parameter is mandatory.

Events

Applicable in the following events:

• RULE_INIT

• HTTP events: HTTP_REQUEST, HTTP_RESPONSE ,HTTP_DATA_REQUEST, HTTP_DATA_RESPONSE ,BEFORE_AUTH, AUTH_RESULT, COOKIE_BAKE

• SSL events: CLIENTSSL_HANDSHAKE, SERVERSSL_HANDSHAKE, CLIENTSSL_RENEGOTIATE, SERVERSSL_RENEGOTIATE

• TCP events: TCP_ACCEPTED, TCP_CLOSED, SERVER_CONNECTED, SERVER_CLOSED, VS_LISTENER_BIND, SERVER_BEFORE_CONNECT

• WAF events: WAF_REQUEST_BEFORE_SCAN,WAF_RESPONSE_BEFORE_SCAN,WAF_REQUEST_ATTACK_DETECTED,WAF_RESPONSE_ATTACK_DETECTED

Example

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

Supported Version

FortiADC version 7.6.0 and later.