Log parsing error causes teler fail to analysis

[DummyKitty]

I tried to use the following log format, add $request_body to collect post data.

    log_format  main  '$remote_addr $remote_user - [$time_iso8601] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$request_body" ';

teler's config file is:

log_format: |
  $remote_addr $remote_user - [$time_local] "$request_method $request_uri $request_protocol" 
  $status $body_bytes_sent "$http_referer" "$http_user_agent" "$request_body" 

I use some data in the following format for testing

192.168.68.129 - - [2021-03-11T01:31:26+00:00] "POST /index.php HTTP/1.1" 404 287 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0" "id=%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%7bFILE%7d&name=111asdasdaasd" 

But teler can not work properly.

When I added a useless ending character "-" in nginx logfomat, change the teler's config file, and recreate testing data.

    log_format  main  '$remote_addr $remote_user - [$time_iso8601] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$request_body" -';

log_format: |
  $remote_addr $remote_user - [$time_local] "$request_method $request_uri $request_protocol" 
  $status $body_bytes_sent "$http_referer" "$http_user_agent" "$request_body" $x   

192.168.68.129 - - [2021-03-11T01:31:26+00:00] "POST /index.php HTTP/1.1" 404 287 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0" "id=%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%2e%2e%2f%7bFILE%7d&name=111asdasdaasd" -

It worked.

I don't know why. I'm a freshman using Golang. Does this problem come from gonx package?

[dwisiswant0]

As we don't have clear documentation on how to define log_format, maybe this can help you: #86 (comment).