Statistics Module

Bogdan Iancu

Edited by

Bogdan Iancu

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; variables (holding integer values) are also allowed.

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;
...