How to remove escape character when using kafka console consumer?

Atreiide

1/6/23, 9:45 AM

For compliance purposes, I have to save all kafka raw documents and keep them one year. To do this, I use the following :

kafka-console-consumer.sh --bootstrap-server kafka1:9092,kafka2:9092,kafka3:9092 --topic test1 --consumer.config /usr/local/kafka_2.12-2.2.1/config/consumer.properties >> /data/backup.txt

Saved documents have escape characters like this (\ before each double quotes) :

{"type":"Fortigate","@timestamp":"2021-09-06T09:20:38.909Z","message":"<189>date=2021-09-06 time=11:20:38 devname=\"FW_N\" devid=\"FG1123\" logid=\"0000000013\" type=\"traffic\" subtype=\"forward\" level=\"notice\" vd=\"FW-D\" eventtime=1630920038 srcip=1.2.3.4 srcport=59349 srcintf=\"LAG11.2418\" srcintfrole=\"undefined\" dstip=1.2.3.4 dstport=8531 dstintf=\"LAG11.1470\" dstintfrole=\"undefined\" poluuid=\"8f80acf4-db3f-51eb-369f-97e43f065438\" sessionid=3122225826 proto=6 action=\"deny\" policyid=1234 policytype=\"policy\" service=\"gTCP/8531\" dstcountry=\"Reserved\" srccountry=\"Reserved\" trandisp=\"noop\" duration=0 sentbyte=0 rcvdbyte=0 sentpkt=0 appcat=\"unscanned\" crscore=30 craction=131072 crlevel=\"high\"","@version":"1","host":"5.6.7.8"}

Expected result :

{"type":"Fortigate","@timestamp":"2021-09-06T09:20:38.909Z","message":"<189>date=2021-09-06 time=11:20:38 devname="FW_N" devid="FG1123" logid="0000000013" type="traffic" subtype="forward" level="notice" vd="FW-D" eventtime=1630920038 srcip=1.2.3.4 srcport=59349 srcintf="LAG11.2418" srcintfrole="undefined" dstip=1.2.3.4 dstport=8531 dstintf="LAG11.1470" dstintfrole="undefined" poluuid="8f80acf4-db3f-51eb-369f-97e43f065438" sessionid=3122225826 proto=6 action="deny" policyid=1234 policytype="policy" service="gTCP/8531" dstcountry="Reserved" srccountry="Reserved" trandisp="noop" duration=0 sentbyte=0 rcvdbyte=0 sentpkt=0 appcat="unscanned" crscore=30 craction=131072 crlevel="high"","@version":"1","host":"5.6.7.8"}

Is there any way to tell to kafka console consumer to not add these escape characters ?

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Michael Hampton

1/6/23, 11:33 AM

That looks like a JSON rendering of your document. The backslashes are supposed to be there. They tell which quotation marks are part of your data and which are not. Your JSON parser will deal with these. You do not need to do anything.

Atreiide

1/6/23, 2:35 PM

Yes indeed....Thanks Michael

OneCricketeer

3/1/23, 9:03 PM

This seems off-topic for ServerFault. In the future, StackOverflow would be better

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: How to remove escape character when using kafka console consumer?

TH: จะลบอักขระหลีกเมื่อใช้ kafka console consumer ได้อย่างไร

RO: Cum să eliminați caracterul de evadare atunci când utilizați Kafka console consumer?

RU: Как удалить escape-символ при использовании потребителя консоли kafka?

VI: Làm cách nào để xóa ký tự thoát khi sử dụng trình tiêu dùng bảng điều khiển kafka?

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