Logging with nginx

nginx.conf

# An events block is required for Nginx to run, even if it's empty.
events {}

# HTTP processing.
http {

    # Note: log formats only apply to access_logs, not error_logs.
    # Error logs always start with time stamp and then the level,
    # e.g., [emerg] or [alert] or whatever.
    log_format web_app
        '{'
            '"logname": "access-log-for-web-app", '
             '"remote_addr": "$remote_addr", '
             '"remote_user": "$remote_user", '
             '"time_local": "$time_local", '
             '"request": "$request", '
             '"status": "$status", '
             '"body_bytes_sent": "$body_bytes_sent", '
             '"http_referer": "$http_referer", '
             '"http_user_agent": "$http_user_agent"'
        '}';

    log_format usenet_app
        '{'
            '"logname": "access-log-for-usenet-app", '
             '"remote_addr": "$remote_addr", '
             '"remote_user": "$remote_user", '
             '"time_local": "$time_local", '
             '"request": "$request", '
             '"status": "$status", '
             '"body_bytes_sent": "$body_bytes_sent", '
             '"http_referer": "$http_referer", '
             '"http_user_agent": "$http_user_agent"'
        '}';

    log_format api_app
        '{'
            '"logname": "access-log-for-api-app", '
             '"remote_addr": "$remote_addr", '
             '"remote_user": "$remote_user", '
             '"time_local": "$time_local", '
             '"request": "$request", '
             '"status": "$status", '
             '"body_bytes_sent": "$body_bytes_sent", '
             '"http_referer": "$http_referer", '
             '"http_user_agent": "$http_user_agent"'
        '}';

    # Listen on any interface on port 9050.
    server {
        listen 0.0.0.0:9050;
  	    server_name "";

        # Any requests starting with / go here.
        location / {
            root /srv;

            # Nginx will log to STDOUT if specify no access_log.
            # If you want to specify a log format, use /dev/stdout.
	    # This one uses the `web_app` format.
            access_log /dev/stdout web_app;

            # Nginx will log to STDERR if you specify no error_log.
            # But you can also do this:
            error_log stderr;

        }

        # Any requests starting with /usenet go here.
        location /usenet {
            root /srv-alternate;

            # Nginx will log to STDERR if you specify no error_log.
            # But you can also do this:
            error_log stderr;

            # Nginx will log to STDOUT if specify no access_log.
            # If you want to specify a log format, use /dev/stdout.
	    # This one uses the `usenet_app` format.
            access_log /dev/stdout usenet_app;

        }

        # Any requests starting with /api go here.
        location /api {

            # Set up logging.
            error_log stderr;
	    access_log /dev/stdout api_app;

            # The FastCGI protocol cannot receive HTTP headers.
	    # So, it needs that data sent to it as fastcgi_params.
	    # This will include a set of industry-standard params:
	    include fastcgi_params;

            # Where is the web root on the FastCGI server?
	    # Note: this path need not exist on this server.
	    # It specifies the path on the FastCGI server.
	    root /srv;

            # FastCGI needs to know which file it should open.
	    # This sets the SCRIPT_FILENAME parameter, which FastCGI will
	    # read to figure out what file it should open.
            # Note the variables:
	    # - $document_root: the same as the `root` directive.
	    # - $fastcgi_script_name: the requested URI, e.g., /my-page.php
	    # So, a request to /my-page would become /srv/my-page.php.
	    # fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

            # Or, if you want to always send the request to index.php, point
	    # directly to index.php in the doc root, like this:
            fastcgi_param SCRIPT_FILENAME $document_root/logging.php;

            # If the request URI ends in a slash, the fastcgi_index will be
	    # appended to it in $fastcgi_script_name. So, a request to /my-dir/
	    # would become /srv/my-dir/index.php.
            # fastcgi_index index.php;

            # Finally, where do we send the request? Note the `hhvm:9000`.
	    # That host is set by a docker link. You can't prepend "http://" to it.
            fastcgi_pass hhvm:9000;

            # Or, if you used a Unix socket:
            # fastcgi_pass unix:/var/run/hhvm/sock;

        }

    }

}