Logstash CSV String Text containing commas

Elastic Stack Logstash
1

Dear Logstash Community,

Need your help. I am facing an issue with Network Switch Traffic that comes in the form of CSV files. The problem is some of the fields contain commas in it e.g. a URL and the string isn't encapsulated within quotation marks.

For example URL = http://url.com/search.?aspx=feed1@x1,x2,x3

What happens is now my message is and columns are blown out and I get something like:

URL, Bytes, column 30, column 31 etc. Where column 30 and 31 is new columns added by the CSV filter.

Below is my logstash conf file:

input {
file {
	path => "/Users/wtaylor/Downloads/logstash-2.2.2/bin/sce/*.csv"
	type => "usage"
	start_position => "beginning"
    }
    }



filter {
csv {
	columns => [
			"TIMESTAMP",
			"DUMMY",
			"SUBSCRIBER_ID",
			"PACKAGE_ID",
			"SERVICE_ID",
			"PROTOCOL_ID",
			"SKIPPED_SESSIONS",
			"SERVER_IP",
			"SERVER_PORT",
			"ACCESS_STRING",
			"INFO_STRING",
			"CLIENT_IP",
			"CLIENT_PORT",
			"INITIATING_SIDE",
			"REPORT_TIME",
			"MILLISEC_DURATION",
			"TIME_FRAME",
			"SESSION_UPSTREAM_VOLUME",
			"SESSION_DOWNSTREAM_VOLUME",
			"SUBSCRIBER_COUNTER_ID",
			"GLOBAL_COUNTER_ID",
			"PACKAGE_COUNTER_ID",
			"IP_PROTOCOL",
			"PROTOCOL_SIGNATURE",
			"ZONE_ID",
			"FLAVOR_ID",
			"FLOW_CLOSE_IP_TYPE",
			"SERVERIPv6ADDRESS",
			"CLIENTIPv6ADDRESS"
		]
separator => ","
}
}

output {
    stdout { codec => json_lines }
}

I ideally need to get length of the array if split by commas and join the extra commas one of the fields e.g. INFO_STRING

Does anyone know how to achieve this.

Wayne