JSON Log format for NGINX

json_log.conf

log_format json    '{'
                  # disabled to use timestamp in iso8601 format
                  # '"time_local": "$time_local",'
                   '"time_iso8601": "$time_iso8601",'
                   '"browser": ['
                     '{'
                       '"modern_browser": "$modern_browser",'
                       '"ancient_browser": "$ancient_browser",'
                       '"msie": "$msie"'
                     '}'
                   '],'
                   '"core": ['
                     '{'
                       '"args": "$args",'
                       '"arg": {'
                         '"arg_example": "$arg_example"'
                       '},'
                     # disabled due to invalid JSON in variable
                     # '"binary_remote_addr": "$binary_remote_addr",'
                       '"body_bytes_sent": "$body_bytes_sent",'
                       '"bytes_sent": "$bytes_sent",'
                       '"cookie": {'
                         '"cookie_example": "$cookie_example"'
                       '},'
                       '"connection": "$connection",'
                       '"connection_requests": "$connection_requests",'
                       '"content_length": "$content_length",'
                       '"content_type": "$content_type",'
                       '"document_root": "$document_root",'
                       '"document_uri": "$document_uri",'
                       '"host": "$host",'
                       '"hostname": "$hostname",'
                       '"http": {'
                         '"http_example": "$http_example"'
                       '},'
                       '"https": "$https",'
                       '"is_args": "$is_args",'
                       '"limit_rate": "$limit_rate",'
                       '"msec": "$msec",'
                       '"nginx_version": "$nginx_version",'
                       '"pid": "$pid",'
                       '"pipe": "$pipe",'
                       '"proxy_protocol_addr": "$proxy_protocol_addr",'
                       '"query_string": "$query_string",'
                       '"realpath_root": "$realpath_root",'
                       '"remote_addr": "$remote_addr",'
                       '"remote_port": "$remote_port",'
                       '"remote_user": "$remote_user",'
                       '"request": "$request",'
                       '"request_body": "$request_body",'
                       '"request_body_file": "$request_body_file",'
                       '"request_completion": "$request_completion",'
                       '"request_filename": "$request_filename",'
                       '"request_length": "$request_length",'
                       '"request_method": "$request_method",'
                       '"request_time": "$request_time",'
                       '"request_uri": "$request_uri",'
                       '"scheme": "$scheme",'
                       '"sent_http_": {'
                         '"sent_http_example": "$sent_http_example"'
                       '},'
                       '"server_addr": "$server_addr",'
                       '"server_name": "$server_name",'
                       '"server_port": "$server_port",'
                       '"server_protocol": "$server_protocol",'
                       '"status": "$status",'
                       '"tcpinfo_rtt": "$tcpinfo_rtt",'
                       '"tcpinfo_rttvar": "$tcpinfo_rttvar",'
                       '"tcpinfo_snd_cwnd": "$tcpinfo_snd_cwnd",'
                       '"tcpinfo_rcv_space": "$tcpinfo_rcv_space",'
                       '"uri": "$uri"'
                     '}'
                   '],'
                   '"fastcgi": ['
                     '{'
                       '"fastcgi_path_info": "$fastcgi_path_info",'
                       '"fastcgi_script_name": "$fastcgi_script_name"'
                     '}'
                   '],'
                   '"geoip": ['
                     '{'
                       '"geoip_area_code": "$geoip_area_code",'
                       '"geoip_city": "$geoip_city",'
                       '"geoip_city_continent_code": "$geoip_city_continent_code",'
                       '"geoip_city_country_code": "$geoip_city_country_code",'
                       '"geoip_city_country_code3": "$geoip_city_country_code3",'
                       '"geoip_city_country_name": "$geoip_city_country_name",'
                       '"geoip_country_code": "$geoip_country_code",'
                       '"geoip_country_code3": "$geoip_country_code3",'
                       '"geoip_country_name": "$geoip_country_name",'
                       '"geoip_dma_code": "$geoip_dma_code",'
                       '"geoip_latitude": "$geoip_latitude",'
                       '"geoip_longitude": "$geoip_longitude",'
                       '"geoip_org": "$geoip_org",'
                       '"geoip_postal_code": "$geoip_postal_code",'
                       '"geoip_region": "$geoip_region",'
                       '"geoip_region_name": "$geoip_region_name"'
                     '}'
                   '],'
                   '"gzip": ['
                     '{'
                       '"gzip_ratio": "$gzip_ratio"'
                     '}'
                   '],'
                  # disabled no http2 module compiled in current binary
                  # '"http2": ['
                  #   '{'
                  #     '"http2": "$http2"'
                  #   '}'
                  # '],'
                  #
                  # disabled no variable at runtime
                  # '"memcached": ['
                  #   '{'
                  #     '"memcached_key": "$memcached_key"'
                  #   '}'
                  # '],'
                   '"proxy": ['
                     '{'
                       '"proxy_add_x_forwarded_for": "$proxy_add_x_forwarded_for",'
                       '"proxy_host": "$proxy_host",'
                       '"proxy_port": "$proxy_port"'
                     '}'
                   '],'
                  # disabled no variable at runtime
                  # '"realip": ['
                  #   '{'
                  #     '"realip_remote_addr": "$realip_remote_addr"'
                  #   '}'
                  # '],'
                  #
                  # disabled no variable at runtime
                  # '"referer": ['
                  #   '{'
                  #     '"invalid_referer": "$invalid_referer"'
                  #   '}'
                  # '],'
                   '"secure_link": ['
                     '{'
                       '"secure_link": "$secure_link",'
                       '"secure_link_expires": "$secure_link_expires"'
                     '}'
                   '],'
                   '"session_log": ['
                     '{'
                       '"session_log_binary_id": "$session_log_binary_id",'
                       '"session_log_id": "$session_log_id"'
                     '}'
                   '],'
                   '"spdy": ['
                     '{'
                       '"spdy": "$spdy",'
                       '"spdy_request_priority": "$spdy_request_priority"'
                     '}'
                   '],'
                   '"ssi": ['
                     '{'
                       '"date_gmt": "$date_gmt",'
                       '"date_local": "$date_local"'
                     '}'
                   '],'
                   '"ssl": ['
                     '{'
                       '"ssl_cipher": "$ssl_cipher",'
                       '"ssl_client_cert": "$ssl_client_cert",'
                       '"ssl_client_fingerprint": "$ssl_client_fingerprint",'
                       '"ssl_client_i_dn": "$ssl_client_i_dn",'
                       '"ssl_client_raw_cert": "$ssl_client_raw_cert",'
                       '"ssl_client_s_dn": "$ssl_client_s_dn",'
                       '"ssl_client_serial": "$ssl_client_serial",'
                       '"ssl_client_verify": "$ssl_client_verify",'
                       '"ssl_protocol": "$ssl_protocol",'
                       '"ssl_server_name": "$ssl_server_name",'
                       '"ssl_session_id": "$ssl_session_id",'
                       '"ssl_session_reused": "$ssl_session_reused"'
                     '}'
                   '],'
                   '"stub_status": ['
                     '{'
                       '"connections_active": "$connections_active",'
                       '"connections_reading": "$connections_reading",'
                       '"connections_waiting": "$connections_waiting",'
                       '"connections_writing": "$connections_writing"'
                     '}'
                   '],'
                   '"uid": ['
                     '{'
                       '"uid_got": "$uid_got",'
                       '"uid_reset": "$uid_reset",'
                       '"uid_set": "$uid_set"'
                     '}'
                   '],'
                   '"upstream": ['
                     '{'
                       '"addr": "$upstream_addr",'
                       '"status": "$upstream_status",'
                       '"connect_time": "$upstream_connect_time",'
                       '"header_time": "$upstream_header_time",'
                       '"response_length": "$upstream_response_length",'
                       '"response_time": "$upstream_response_time",'
                       '"upstream_http": {'
                         '"upstream_http_example": "$upstream_http_example"'
                       '}'
                     '}'
                   ']'
                 '}';