This is the command to convert AWS Cloudfront access log to CSV or JSON format.
The below described is cloudfront access logs sample
#Version: 1.0
#Fields: date time x-edge-location sc-bytes c-ip cs-method cs(Host) cs-uri-stem sc-status cs(Referer) cs(User-Agent) cs-uri-query cs(Cookie) x-edge-result-type x-edge-request-id x-host-header cs-protocol cs-bytes time-taken x-forwarded-for ssl-protocol ssl-cipher x-edge-response-result-type cs-protocol-version fle-status fle-encrypted-fields c-port time-to-first-byte x-edge-detailed-result-type sc-content-type sc-content-len sc-range-start sc-range-end
2024-06-17 07:35:31 NRT00-A0 1195 xxx.xxx.xxx.xxx POST xxxxxx.cloudfront.net /xxxxx 200 https://sample.com/xxxx Mozilla/5.0xxxxxxxxxxxx xxxxx - Ok xxxx.sample.com https 159444 0.316 - TLSv1.3 TLS_AES_128_GCM_SHA256 Ok HTTP/2.0 - - 52358 0.316 - text/html 951 - -
2024-06-17 07:35:31 NRT00-A0 1195 xxx.xxx.xxx.xxx POST xxxxxx.cloudfront.net /xxxxx 200 https://sample.com/xxxx Mozilla/5.0xxxxxxxxxxxx xxxxx - Ok xxxx.sample.com https 159444 0.316 - TLSv1.3 TLS_AES_128_GCM_SHA256 Ok HTTP/2.0 - - 52358 0.316 - text/html 951 - -
2024-06-17 07:35:31 NRT00-A0 1195 xxx.xxx.xxx.xxx POST xxxxxx.cloudfront.net /xxxxx 200 https://sample.com/xxxx Mozilla/5.0xxxxxxxxxxxx xxxxx - Ok xxxx.sample.com https 159444 0.316 - TLSv1.3 TLS_AES_128_GCM_SHA256 Ok HTTP/2.0 - - 52358 0.316 - text/html 951 - -
2024-06-17 07:35:31 NRT00-A0 1195 xxx.xxx.xxx.xxx POST xxxxxx.cloudfront.net /xxxxx 200 https://sample.com/xxxx Mozilla/5.0xxxxxxxxxxxx xxxxx - Ok xxxx.sample.com https 159444 0.316 - TLSv1.3 TLS_AES_128_GCM_SHA256 Ok HTTP/2.0 - - 52358 0.316 - text/html 951 - -
2024-06-17 07:35:31 NRT00-A0 1195 xxx.xxx.xxx.xxx POST xxxxxx.cloudfront.net /xxxxx 200 https://sample.com/xxxx Mozilla/5.0xxxxxxxxxxxx xxxxx - Ok xxxx.sample.com https 159444 0.316 - TLSv1.3 TLS_AES_128_GCM_SHA256 Ok HTTP/2.0 - - 52358 0.316 - text/html 951 - -
$ cd <repository root>
$ go build -o <command name you like>
$ ./<command name you like> -f <cloudfront access log file path> -o <output file path .csv>