#!/bin/bash

#

# Convert from this:

# http://nginx.org/en/docs/http/ngx_http_log_module.html

# To this:

# https://goaccess.io/man

#

# Conversion table:

# $time_local %d:%t %^

# $host %v

# $http_host %v

# $remote_addr %h

# $request_time %T

# $request_method %m

# $request_uri %U

# $server_protocol %H

# $request %r

# $status %s

# $body_bytes_sent %b

# $bytes_sent %b

# $http_referer %R

# $http_user_agent %u

#

# Samples:

#

# log_format combined '$remote_addr - $remote_user [$time_local] '

# '"$request" $status $body_bytes_sent '

# '"$http_referer" "$http_user_agent"';

# ./nginx2goaccess.sh '$remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent"'

#

# log_format compression '$remote_addr - $remote_user [$time_local] '

# '"$request" $status $bytes_sent '

# '"$http_referer" "$http_user_agent" "$gzip_ratio"';

# ./nginx2goaccess.sh '$remote_addr - $remote_user [$time_local] "$request" $status $bytes_sent "$http_referer" "$http_user_agent" "$gzip_ratio"'

#

# log_format main

# '$remote_addr\t$time_local\t$host\t$request\t$http_referer\t$http_x_mobile_group\t'

# 'Local:\t$status\t$body_bytes_sent\t$request_time\t'

# 'Proxy:\t$upstream_cache_status\t$upstream_status\t$upstream_response_length\t$upstream_response_time\t'

# 'Agent:\t$http_user_agent\t'

# 'Fwd:\t$http_x_forwarded_for';

# ./nginx2goaccess.sh '$remote_addr\t$time_local\t$host\t$request\t$http_referer\t$http_x_mobile_group\tLocal:\t$status\t$body_bytes_sent\t$request_time\tProxy:\t$upstream_cache_status\t$upstream_status\t$upstream_response_length\t$upstream_response_time\tAgent:\t$http_user_agent\tFwd:\t$http_x_forwarded_for'

#

# log_format main

# '${time_local}\t${remote_addr}\t${host}\t${request_method}\t${request_uri}\t${server_protocol}\t'

# '${http_referer}\t${http_x_mobile_group}\t'

# 'Local:\t${status}\t*${connection}\t${body_bytes_sent}\t${request_time}\t'

# 'Proxy:\t${upstream_status}\t${upstream_cache_status}\t'

# '${upstream_response_length}\t${upstream_response_time}\t${uri}${log_args}\t'

# 'Agent:\t${http_user_agent}\t'

# 'Fwd:\t${http_x_forwarded_for}';

# ./nginx2goaccess.sh '${time_local}\t${remote_addr}\t${host}\t${request_method}\t${request_uri}\t${server_protocol}\t${http_referer}\t${http_x_mobile_group}\tLocal:\t${status}\t*${connection}\t${body_bytes_sent}\t${request_time}\tProxy:\t${upstream_status}\t${upstream_cache_status}\t${upstream_response_length}\t${upstream_response_time}\t${uri}${log_args}\tAgent:\t${http_user_agent}\tFwd:\t${http_x_forwarded_for}'

#

# Author: Rogério Carvalho Schneider <stockrt@gmail.com>

# Params

log_format="${@:1}"

# Usage

if [[ -z "$log_format" ]]; then

echo "Usage: $0 '<log_format>'"

exit 1

fi

# Variables map

conversion_table="time_local,%d:%t_%^

host,%v

http_host,%v

remote_addr,%h

request_time,%T

request_method,%m

request_uri,%U

server_protocol,%H

request,%r

status,%s

body_bytes_sent,%b

bytes_sent,%b

http_referer,%R

http_user_agent,%u"

# Conversion

for item in $conversion_table; do

nginx_var=${item%%,*}

goaccess_var=${item##*,}

goaccess_var=${goaccess_var//_/ }

log_format=${log_format//\$\{$nginx_var\}/$goaccess_var}

log_format=${log_format//\$$nginx_var/$goaccess_var}

done

log_format=$(echo "$log_format" | sed 's/${[a-z_]*}/%^/g')

log_format=$(echo "$log_format" | sed 's/$[a-z_]*/%^/g')

# Config output

echo "

- Generated goaccess config:

time-format %T

date-format %d/%b/%Y

log_format $log_format

"

# EOF