mtree Module

Daniel-Constantin Mierla

Edited by

Daniel-Constantin Mierla

Juha Heinanen

Edited by

Juha Heinanen

Table of Contents

1. Admin Guide
1. Overview
2. Dependencies
2.1. Kamailio Modules
2.2. External Libraries or Applications
3. Parameters
3.1. db_url (string)
3.2. db_table (string)
3.3. mtree (string)
3.4. tname_column (string)
3.5. tprefix_column (string)
3.6. tvalue_column (string)
3.7. fetch_rows (integer)
3.8. char_list (string)
3.9. pv_value (string)
3.10. pv_values (string)
3.11. mt_tree_type (integer)
3.12. mt_ignore_duplicates (integer)
3.13. mt_allow_duplicates (integer)
4. Functions
4.1. mt_match(mtree, pv, mode)
5. MI Commands
5.1. mt_list
5.2. mt_reload
5.3. mt_summary

List of Examples

1.1. Set db_url parameter
1.2. Set db_table parameter
1.3. Set mtree parameter
1.4. Set tname_column parameter
1.5. Set tprefix_column parameter
1.6. Set tvalue_column parameter
1.7. Set fetch_rows parameter
1.8. Set char_list parameter
1.9. Set pv_value parameter
1.10. Set pv_values parameter
1.11. Set mt_tree_type parameter
1.12. Set mt_ignore_duplicates parameter
1.13. Set mt_allow_duplicates parameter
1.14. mt_match usage

Chapter 1. Admin Guide

1. Overview

This module loads data indexed by prefixes from database and returns associated string or precompiled value.

2. Dependencies

2.1. Kamailio Modules

The following modules must be loaded before this module:

  • A Kamailio database module (e.g., mysql).

2.2. External Libraries or Applications

The following libraries or applications must be installed before running Kamailio with this module loaded:

  • None.

3. Parameters

3.1. db_url (string)

URL of the database server to be used.

Default value is mysql://openser:openserrw@localhost/openser.

Example 1.1. Set db_url parameter

modparam("mtree", "db_url", "dbdriver://username:password@dbhost/dbname")

3.2. db_table (string)

Name of DB table where data for trees is store. It is ignored if a 'mtree' parameter is defined.

Default value is mtrees.

Example 1.2. Set db_table parameter

modparam("mtree", "db_table", "mymtrees")

3.3. mtree (string)

Definition of memory tree

Default value is none.

Example 1.3. Set mtree parameter

modparam("mtree", "mtree", "name=mytable;dbtable=routes;type=0;")

3.4. tname_column (string)

Name of 'tname' column.

Default value is tname.

Example 1.4. Set tname_column parameter

modparam("mtree", "tname_column", "name")

3.5. tprefix_column (string)

Name of 'tprefix' column.

Default value is tprefix.

Example 1.5. Set tprefix_column parameter

modparam("mtree", "tprefix_column", "prefix")

3.6. tvalue_column (string)

Name of 'tvalue' column.

Default value is tvalue.

Example 1.6. Set tvalue_column parameter

modparam("mtree", "tvalue_column", "ipaddr")

3.7. fetch_rows (integer)

Number of rows to be loaded in one step from database.

Default value is 1000.

Example 1.7. Set fetch_rows parameter

modparam("mtree", "fetch_rows", 4000)

3.8. char_list (string)

The list with characters allowed in prefix.

Default value is 0123456789.

Example 1.8. Set char_list parameter

modparam("mtree", "char_list", "0123456789*+")

3.9. pv_value (string)

The PV spec where to store the matched value. It can be any writtable PV.

Default value is $avp(s:tvalue).

Example 1.9. Set pv_value parameter

modparam("mtree", "pv_value", "$var(mtval)")

3.10. pv_values (string)

The PV spec where to store the matched values when mtree is of type 0 or 2 and mode of mt_match() call has value 2. It can be any AVP.

Default value is $avp(s:tvalues).

Example 1.10. Set pv_values parameter

modparam("mtree", "pv_values", "$avp(mtvals)")

3.11. mt_tree_type (integer)

Default payload type for trees data stored in 'db_table'. Documented values are 0 for string payloads and 2 for integer payloads.

Default value is 0.

Example 1.11. Set mt_tree_type parameter

modparam("mtree", "mt_tree_type", 2)

3.12. mt_ignore_duplicates (integer)

Ignore duplicated prefixes when loading data.

Default value is 0.

Example 1.12. Set mt_ignore_duplicates parameter

modparam("mtree", "mt_ignore_duplicates", 1)

3.13. mt_allow_duplicates (integer)

Allow duplicate prefixes when loading data.

Default value is 0.

Example 1.13. Set mt_allow_duplicates parameter

modparam("mtree", "mt_allow_duplicates", 1)

4. Functions

4.1.  mt_match(mtree, pv, mode)

Match 'pv' value against 'mtree'. If 'mtree' type is 0 or 2 and value of 'mode' is NOT 2, sets a value of longest matching prefix to pseudo variable specified by pv_value parameter. If 'mtree' type is 0 or 2 and value of 'mode' is 2, sets values of all matching prefixes to avp specified by pv_values parameter so that a value of longest matching prefix is in avp index 0. Parameter 'mode' can be an integer constant or a pseudo variable with integer value.

Example 1.14. mt_match usage

mt_match("mytree", "$rU", "0");

5. MI Commands

5.1.  mt_list

List content of a tree.

Name: mt_list


  • _mtree_ : name of tree to list.

MI FIFO Command Format:


5.2.  mt_reload

Reload mtree from database.

Name: mt_mtree


  • _mtname_

    - name of mem tree

MI FIFO Command Format:


5.3.  mt_summary

List usage summary for all trees.

Name: mt_summary

Parameters: none.

MI FIFO Command Format: