Counters Module

Andrei Pelinescu-Onciul

   iptelorg GmbH

   Copyright © 2010 iptelorg GmbH
     __________________________________________________________________

   List of Examples

   1. Create a new script_counter
   2. Set script_cnt_grp_name in the config file
   3. cnt_inc usage
   4. cnt_add usage
   5. cnt_reset usage
   6. cnt.get grp counter_name usage
   7. cnt.reset grp name usage
   8. cnt.grps_list usage
   9. cnt.var_list group usage
   10. cnt.var_list group usage
   11. cnt.help grp name usage

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.  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 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 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 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 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 6. cnt.get grp counter_name usage
 $ sercmd cnt.get script foo

4.2.  cnt.reset group counter_name

   Resets the counter identified by group.counter_name.

   Example 7. cnt.reset grp name usage
 $ sercmd cnt.reset script foo

4.3.  cnt.grps_list

   Lists all the declared counter groups.

   Example 8. cnt.grps_list usage
 $ sercmd cnt.grps_list

4.4.  cnt.var_list group

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

   Example 9. cnt.var_list group usage
 $ sercmd cnt.var_list script

4.5.  cnt.grp_get_all

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

   Example 10. cnt.var_list group usage
 $ sercmd cnt.grp_get_all script

4.6.  cnt.help group counter_name

   Displays the counter description.

   Example 11. cnt.help grp name usage
 $ sercmd cnt.help script foo
