
Counters Module

Andrei Pelinescu-Onciul

   iptelorg GmbH

   Copyright © 2010 iptelorg GmbH
     _________________________________________________________________

   Table of Contents

   1. Admin Guide

        1. Overview
        2. Parameters

              2.1. script_counter
              2.2. script_cnt_grp_name

        3. Functions

              3.1. cnt_inc([group.]name) 
              3.2. cnt_add([group.]name, number) 
              3.3. cnt_reset([group.]name) 

        4. counters RPC Functions

              4.1. cnt.get group counter_name
              4.2. cnt.reset group counter_name
              4.3. cnt.grps_list
              4.4. cnt.var_list group
              4.5. cnt.grp_get_all
              4.6. cnt.help group counter_name

   List of Examples

   1.1. Create a new script_counter 
   1.2. Set script_cnt_grp_name in the config file 
   1.3. cnt_inc usage
   1.4. cnt_add usage
   1.5. cnt_reset usage
   1.6. cnt.get grp counter_name usage
   1.7. cnt.reset grp name usage
   1.8. cnt.grps_list usage
   1.9. cnt.var_list group usage
   1.10. cnt.var_list group usage
   1.11. cnt.help grp name usage

Chapter 1. Admin Guide

   Table of Contents

   1. Overview
   2. Parameters

        2.1. script_counter
        2.2. script_cnt_grp_name

   3. Functions

        3.1. cnt_inc([group.]name) 
        3.2. cnt_add([group.]name, number) 
        3.3. cnt_reset([group.]name) 

   4. counters RPC Functions

        4.1. cnt.get group counter_name
        4.2. cnt.reset group counter_name
        4.3. cnt.grps_list
        4.4. cnt.var_list group
        4.5. cnt.grp_get_all
        4.6. cnt.help group counter_name

1. Overview

   This  module exports counters/statistics manipulating script functions
   and RPCs.

2. Parameters

   2.1. script_counter
   2.2. script_cnt_grp_name

2.1. script_counter

   Define a new counter that can be used from the script. The declaration
   might  include  a  group  in front of the counter name, separated with
   '.'.  It  might  also  include  a  counter  description  string  (help
   message),  separated  from the name with a ' ' or ':'. If the group is
   missing, the group defined in the script_cnt_grp_name module parameter
   will be used (the default is "script"). If the description is missing,
   the  default is "custom script counter". The format of the declaration
   is: [group.]name[( |:)description].

   Example 1.1.  Create a new script_counter 
modparam("counters", "script_counter", "foo")  # script.foo
modparam("counters", "script_counter", "test.bar")  # test.bar
modparam("counters", "script_counter", "baz example counter")  # script.baz
modparam("counters", "script_counter", "test.x:another example") # test.x

2.2. script_cnt_grp_name

   Group  name  that  will  be  used  for  the  counters  defined via the
   script_counter module parameter which do not have a specified group.

   Default: "script".

   Example 1.2.  Set script_cnt_grp_name in the config file 
modparam("counters", "script_cnt_grp_name", "my_counters")

3. Functions

   3.1. cnt_inc([group.]name) 
   3.2. cnt_add([group.]name, number) 
   3.3. cnt_reset([group.]name) 

3.1.  cnt_inc([group.]name)

   Increments  the  counter group.name. The counter must be defined using
   the script_counter module parameter. If the group name is missing, the
   group specified by the script_cnt_grp_name modparam will be used.

   Example 1.3. cnt_inc usage
...
modparam("counters", "script_counter", "reqs")
modparam("counters", "script_counter", "out.reqs  forwarded requests")
...
route {
        cnt_inc("reqs");
        if (forward(uri:host, uri:port))
                cnt_inc("out.reqs");
...
}

3.2.  cnt_add([group.]name, number)

   Adds  number the counter group.name. The counter must be defined using
   the script_counter module parameter. If the group name is missing, the
   group specified by the script_cnt_grp_name modparam will be used.

   Example 1.4. cnt_add usage
...
modparam("counters", "script_counter", "reqs10  reqs times 10")
...
route {
        cnt_add("reqs10", 10);
...
}

3.3.  cnt_reset([group.]name)

   Resets  the  counter group.name. The counter must be defined using the
   script_counter  module  parameter.  If  the group name is missing, the
   group specified by the script_cnt_grp_name modparam will be used.

   Example 1.5. cnt_reset usage
...
modparam("counters", "script_counter", "reqs")
...
route {
        if (...)
                cnt_reset("reqs");
...
}

4. counters RPC Functions

   4.1. cnt.get group counter_name
   4.2. cnt.reset group counter_name
   4.3. cnt.grps_list
   4.4. cnt.var_list group
   4.5. cnt.grp_get_all
   4.6. cnt.help group counter_name

4.1.  cnt.get group counter_name

   Get the value of the counter identified by group.counter_name.

   Example 1.6. cnt.get grp counter_name usage
 $ kamcmd cnt.get script foo

4.2.  cnt.reset group counter_name

   Resets the counter identified by group.counter_name.

   Example 1.7. cnt.reset grp name usage
 $ kamcmd cnt.reset script foo

4.3.  cnt.grps_list

   Lists all the declared counter groups.

   Example 1.8. cnt.grps_list usage
 $ kamcmd cnt.grps_list

4.4.  cnt.var_list group

   Lists  all  the  names  of all the counters belonging to the specified
   group.

   Example 1.9. cnt.var_list group usage
 $ kamcmd cnt.var_list script

4.5.  cnt.grp_get_all

   Lists all the counter names and their values in the specified group.

   Example 1.10. cnt.var_list group usage
 $ kamcmd cnt.grp_get_all script

4.6.  cnt.help group counter_name

   Displays the counter description.

   Example 1.11. cnt.help grp name usage
 $ kamcmd cnt.help script foo
