Simple haraka mail counter

mailcounter.js

// params = [host, ip, response, delay, port, mode, recipients]
//            0    1     2         3     4     5        6      .

var winston = require('winston');
require('winston-mongodb').MongoDB;
winston.add(winston.transports.MongoDB, { db: 'mail-logs', host: '127.0.0.1'});

exports.hook_delivered = function (next, connection, params) {
  connection.loginfo("delivered params are: " + connection.uuid + params + '|' + connection.notes.rcptokat 
    + '|' + connection.notes.subject, this);

  winston.info(connection.todo.uuid, {
    host: params[0],
    ip: params[1],
    response: params[2], 
    delay: params[3],
    mode: params[5],
    recips: params[6],
    size: connection.file_size,
    num_failures: connection.num_failures,
    envelope: connection.todo.mail_from,
    subject: connection.notes.subject,
    rcptok: connection.notes.rcptokat,
    type: "delivery"
  });

  next();
}

exports.hook_bounce = function (next, connection, params) {
  var util = require('util');
  var plugin = this;
  var reason;

  connection.loginfo("bounce params are: " + params, this);
  connection.loginfo("connection details are: " + util.inspect(connection, false, null));

  connection.todo.rcpt_to.forEach(function(bounce) {
    connection.loginfo("Mail for " + bounce.original + " rejected becasue of: " + bounce.reason, plugin);
  });

  winston.info(connection.todo.uuid, {
    ip: "todo",
    response: connection.bounce_error, 
    recips: connection.todo.rcpt_to,
    size: connection.file_size,
    num_failures: connection.num_failures,
    envelope: connection.todo.mail_from,
    subject: connection.notes.subject,
    type: "bounce"
  });

  next();
}

exports.hook_queue_ok = function (next, connection, params) {
  connection.transaction.notes.subject = connection.transaction.header.get('subject').trim();
  next();
}

exports.hook_rcpt_ok = function (next, connection, params) {
  var strftime = require('strftime');
  connection.transaction.notes.rcptokat = strftime('%d-%m-%Y %H:%M:%S %Z');
  next();
}