Kamailio dynamic logging level

 Yet another method to get dynamic logging level on Kamailio. Means to change logging level on the fly.

First to mention - already built-in method for Kamailio inside corex module. But this one could be very verbose.

Other method is to specify level in xlog command explicitly.

kamailio.cfg

#!KAMAILIO

# Level for realtime logging for messages. To see debug messages in realtime, set it to 2
realtime.debug_level=5

...

debug=2

...

request_route {

    $var(debug_level) = $(sel(cfg_get.realtime.debug_level){s.int});

    ...

    xlog("$var(debug_level)", "This is a debug message\n");

}

And than just adjust this debug_level config variable via shell

# kamcmd cfg.set realtime debug_level 2

to get all xlog messages to be printed, or set it to the greater value like

# kamcmd cfg.set realtime debug_level 5

to get em suppressed.  

You can expand this method to have bigger levels of verbosity via different variables, but usually it's enough like this.

Small script to record calls on Asterisk on the fly

 Sometimes there is a need to record ongoing call on Asterisk, where usually there is no recording (due to GDPR or smth like this). Usual way with mixmonitor start in CLI requires a channel ID, which is usually not at hand.

 Small script that will get calls with caller and/or callee numbers (based on assumption, that these numbers are available in Asterisk channel name) and put recordings of them in /tmp directory. Separated for A/B legs and mixed.

Made for myself to simplify some tasks and not to look for it again.

Usage:

./call_record.sh <CALLER_NUM> [<CALLEE_NUM>]

call_record.sh

#!/bin/bash

NUM_1=${1:-"DUMMY"}
NUM_2=${2:-"DUMMY"}

CHANNELS=$(asterisk -rx 'core show channels' | grep -E "${NUM_1}|${NUM_2}" | awk '{print $1}')

if [ -z ${CHANNELS} ]; then
    echo "Cannot find channel"
    exit 0
fi

DATE=$(date '+%F-%H-%M-%S')
ID=1

for CHANNEL in $CHANNELS; do

    DIRNAME=/tmp/${DATE}-${NUM_1}-${NUM_2}

    mkdir -p ${DIRNAME}

    REC_COMMAND=`echo ${DIRNAME}/${ID}-mix.wav,r'('${DIRNAME}/${ID}-in.wav')'t'('${DIRNAME}/${ID}-out.wav')'`

    echo "Recording ${ID} at ${DIRNAME}"

    asterisk -rx "mixmonitor start ${CHANNEL} ${REC_COMMAND}"
    
    ID=$[ ${ID} + 1 ]

done