N00b - logging stream request / response

[Joel Parker]

I am trying to log all request / response in a stream with a lua script I
found in git hub and am having issues figuring out where to put the
log_format directive. Here is what I currently have :

stream {

    log_format bodylog '$remote_addr - $remote_user [$time_local] '
      '"$request" $status $body_bytes_sent '
      '"$http_referer" "$http_user_agent" $request_time '
      '<"$request_body" >"$resp_body"';

     lua_need_request_body on;

     set $resp_body "";
     body_filter_by_lua '
        local resp_body = ngx.arg[1]
        ngx.ctx.buffered = (ngx.ctx.buffered or "") .. resp_body
        if ngx.arg[2] then
           ngx.var.resp_body = ngx.ctx.buffered
        end
       ';

......

}
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