Statistics Module

Bogdan Iancu

Edited by

Bogdan Iancu

   Copyright © 2006 Voice Sistem SRL
   Revision History
   Revision $Revision: 8740 $ $Date$
     __________________________________________________________

   Table of Contents

   1. Admin Guide

        1.1. Overview
        1.2. Dependencies

              1.2.1. OpenSIPS Modules
              1.2.2. External Libraries or Applications

        1.3. Exported Parameters

              1.3.1. variable (string)

        1.4. Exported Functions

              1.4.1. update_stat(variable,value)
              1.4.2. reset_stat(variable)

        1.5. Exported pseudo-variables

              1.5.1. $stat

   List of Examples

   1.1. variable example
   1.2. update_stat usage
   1.3. reset_stat usage
   1.4. $stat usage

Chapter 1. Admin Guide

1.1. Overview

   The Statistics module is a wrapper over the internal statistics
   manager, allowing the script writer to dynamically define and
   use of statistic variables.

   By bringing the statistics support into the script, it takes
   advantage of the script flexibility in defining logics, making
   possible implementation of any kind of statistic scenario.

1.2. Dependencies

1.2.1. OpenSIPS Modules

   The following modules must be loaded before this module:
     * No dependencies on other OpenSIPS modules.

1.2.2. External Libraries or Applications

   The following libraries or applications must be installed
   before running OpenSIPS with this module loaded:
     * None.

1.3. Exported Parameters

1.3.1. variable (string)

   Name of a new statistic variable. The name may be followed by
   additional flag which describe the variable behavior:
     * no_reset : variable cannot be reset.

   Example 1.1. variable example
modparam("statistics", "variable", "register_counter")
modparam("statistics", "variable", "active_calls/no_reset")

1.4. Exported Functions

1.4.1.  update_stat(variable,value)

   Updates the value of the statistic variable with the new value.

   Meaning of the parameters is as follows:
     * variable - variable to be updated (it can be a string or a
       pseudovariable);
     * value - value to update with; it may be also negative.

   This function can be used from REQUEST_ROUTE, BRANCH_ROUTE,
   FAILURE_ROUTE and ONREPLY_ROUTE.

   Example 1.2. update_stat usage
...
update_stat("register_counter", "+1");
...
$var(a_calls) = "active_calls";
update_stat("$var(a_calls)", "-1");
...

1.4.2.  reset_stat(variable)

   Resets to zero the value of the statistic variable.

   Meaning of the parameters is as follows:
     * variable - variable to be reset-ed (it can be a string or a
       pseudovariable).

   This function can be used from REQUEST_ROUTE, BRANCH_ROUTE,
   FAILURE_ROUTE and ONREPLY_ROUTE.

   Example 1.3. reset_stat usage
...
reset_stat("register_counter");
...
$var(reg_counter) = "register_counter";
update_stat("$var(reg_counter)");
...

1.5. Exported pseudo-variables

1.5.1. $stat

   Allows to get and reset core and modules exported statistics.
   The pseudo-variable receives as parameter the name of the
   statistic that it want to get or reset.

   Example 1.4. $stat usage
...
xlog("SHM used size = $stat(used_size) \n");
...
$stat(err_requests) = 0;
...
