CDR File Module

Revision as of 14:37, 18 October 2012

Cdrfile is a module that receive a "chan.cdr" message (maybe from cdrbuild) and is writing the cdr into a file.

Here's list of available variables that could be used to construct a CDR record. Notice, in order for a parameter to be avaiable in the cdr, it has to be enabled in cdrbuild.conf.

The cdrwrite parameter is special, a boolean value of false will prevent the CDR from being written. This is to avoid generating CDR records for utility channels while still being able to track them.

• ${time} - UNIX time
• ${billid} - billing record id
• ${chan} - channel used
• ${address} - destination address
• ${caller} - username/number of the device that initiated/received the call
• ${called} - destination number
• ${callername} - caller id
• ${billtime} - billable call duration, starts from the point when the

               remote party actually answers the call

• ${ringtime} - total time of the call
• ${direction} - has a value of outgoing or incoming
• ${status} - disposition of the call
• ${reason} - reason for call disconnection

Configuration

cdrfile.conf:

[general]
; file: string: Name of the file to write the CDR to
; You should check that this file is log rotated - see /etc/logrotate.d/yate
; Example: file=/var/log/yate-cdr.tsv
;file=

; tabs: bool: Use tab-separated instead of comma-separated if format is missing
;tabs=true

; format: string: Custom format to use, overrides default. Each ${parameter}
;  is replaced with the value of that parameter in the call.cdr message

; tab-separated (.tsv)
;format=${time} ${billid} ${chan} ${address} ${caller} ${called} ${billtime} ${ringtime} ${duration} ${direction} ${status} ${reason}
 
; comma-separated (.csv)
;format=${time},"${billid}","${chan}","${address}","${caller}","${called}",${billtime},${ringtime},${duration},"${direction}","${status}","${reason}"

In many real-life situations CDR billing is done in seconds and it's useful to set resolution=sec in cdrbuild.conf.

Converting call time

If you need a human and machine readable representation of the time column you can use the following AWK script:

awk 'BEGIN{FS="\t";OFS="\t"} {$1=strftime("%Y%m%d%H%M%S",$1); print $0}' /var/log/yate-cdr.tsv

The above assumes TAB separated format, the ${time} parameter is in the first column (the $1 positional parameter) and the CDR file is in its usual place.

Adapt the script as needed. You can make the date/time more readable by inserting separators in the time format.