Statsd Module

Eloy Coto Pereiro

   <eloy.coto@gmail.com>

Edited by

Eloy Coto Pereiro

   <eloy.coto@gmail.com>

   Copyright © 2014 Eloy Coto
     __________________________________________________________________

   Table of Contents

   1. Admin Guide

        1. Overview
        2. Parameters

              2.1. ip(string)
              2.2. port(string)

        3. Functions

              3.1. statsd_set(key, value)
              3.2. statsd_gauge(key, value)
              3.3. statsd_histogram(key, value)
              3.4. statsd_start(key)
              3.5. statsd_stop(key)
              3.6. statsd_incr(key)
              3.7. statsd_decr(key)

   List of Examples

   1.1. Set ip parameter
   1.2. Set port parameter
   1.3. statsd_set usage
   1.4. statsd_gauge usage
   1.5. statsd_histogram usage
   1.6. statsd_start usage
   1.7. statsd_stop usage
   1.8. statsd_incr usage
   1.9. statsd_decr usage

Chapter 1. Admin Guide

   Table of Contents

   1. Overview
   2. Parameters

        2.1. ip(string)
        2.2. port(string)

   3. Functions

        3.1. statsd_set(key, value)
        3.2. statsd_gauge(key, value)
        3.3. statsd_histogram(key, value)
        3.4. statsd_start(key)
        3.5. statsd_stop(key)
        3.6. statsd_incr(key)
        3.7. statsd_decr(key)

1. Overview

   The module provides the ability to send commands to statsd (you can use
   InfluxDB too) with different types of information. It provides native
   integration with statsd (https://github.com/etsy/statsd/) and graphite
   (http://graphite.wikidot.com/).

   The module does not have any special dependency, it does a direct
   socket connection to Graphite.

2. Parameters

   2.1. ip(string)
   2.2. port(string)

2.1. ip(string)

   Statsd server IP address.

   Defaults to 127.0.0.1

   Example 1.1. Set ip parameter
...
modparam("statsd", "ip", "127.0.0.1")
...

2.2. port(string)

   Statsd server port number

   Defaults to 8125

   Example 1.2. Set port parameter
...
modparam("statsd", "port", "8125")
...

3. Functions

   3.1. statsd_set(key, value)
   3.2. statsd_gauge(key, value)
   3.3. statsd_histogram(key, value)
   3.4. statsd_start(key)
   3.5. statsd_stop(key)
   3.6. statsd_incr(key)
   3.7. statsd_decr(key)

3.1.  statsd_set(key, value)

   Sets count the number of unique values passed to a key.

   If this method is called multiple times with the same userid in the
   same sample period, that userid will only be counted once.

   This function can be used in ALL ROUTES.

   Example 1.3. statsd_set usage
...
failure_route[tryagain] {
...
    statsd_set("customerFailure", 1);
...
}
...

3.2.  statsd_gauge(key, value)

   Gauges are a constant data type. They are not subject to averaging and
   they don't change unless you change them. That is, once you set a gauge
   value, it will be a flat line on the graph until you change it again.

   Gauges are useful for things that are already averaged, or don't need
   to reset periodically

   This function can be used in ALL ROUTES.

   The statsd server collects gauges under the stats.gauges prefix.

   Example 1.4. statsd_gauge usage
...
route [gauge_method]{
    statsd_gauge("method"+$rm, "+1");
    statsd_gauge("customer_credit"+$var(customer),"$var(customer_credit)");
}
...

3.3.  statsd_histogram(key, value)

   The histograms are a measure of time, but they are calculated at the
   server side. As the data exported by the client is the same, this is
   just an alias for the Timer type.

   This function can be used in ALL ROUTES.

   The statsd server collects histograms under the stats.histograms
   prefix.

   Example 1.5. statsd_histogram usage
...
    statsd_histogram("latency", 1000);
...

3.4.  statsd_start(key)

   statsd_start set an avp with the key name, and when statsd_stop(key) is
   used, the module will send statsd the difference in milliseconds. this
   is useful to know the time of a SQL query, or how much time your
   replies take.

   This function can be used in all routes.

   The statsd server collects all timers under the stats.timers prefix and
   will calculate the lower bound, mean, 90th percentile, upper bound, and
   count of each timer for each period (by the time it can be seen in
   graphite, that's usually per minute).

   Example 1.6. statsd_start usage
...
statsd_start("long_mysql_query");
sql_query("ca", "select sleep(0.2)", "ra");
statsd_stop("long_mysql_query");
...

3.5.  statsd_stop(key)

   statsd_stop(key) get the avp string with the key and calculate the
   difference from the start time. When finished the milliseconds used
   will be sent to statsd.

   This function can be used in all routes.

   Example 1.7. statsd_stop usage
...
statsd_start("long_mysql_query");
sql_query("ca", "select sleep(0.2)", "ra");
statsd_stop("long_mysql_query");
...

3.6.  statsd_incr(key)

   Increment a statsd counter

   This function can be used in all routes.

   Example 1.8. statsd_incr usage
...
if(geoip_match("$si", "src")){
    statsd_incr("country."+$(gip(src=>cc)));
}
...

3.7.  statsd_decr(key)

   Decrement a counter

   This function can be used in all routes.

   Example 1.9. statsd_decr usage
...
if (t_check_status("408")) {
    statsd_decr("kamailio.successfulCalls");
    statsd_incr("kamailio.reply.timeout");
}
...
