WIP

lib/email.js

@@ -0,0 +1,40 @@
+var SMTPConnection = require('smtp-connection')
+
+/*
+
+Nice job signing up! Let's finish getting you set up.
+Simply change the settings in your email software to these:
+SMTP Server:  mail.smtp2go.com
+SMTP Port:  2525 (recommended)
+Username:  josh@lamassu.is
+Password:  view / edit
+*/
+
+var options = {
+  port: 2525,
+  host: 'mail.smtp2go.com',
+  requireTLS: true
+}
+
+function send (from, to, subject, body, cb) {
+  var connection = new SMTPConnection(options)
+  connection.connect(function () {
+    connection.login({user: 'josh@lamassu.is', pass: 'HPtXGp}9baafiqns%6YFH'}, function (err) {
+      if (err) return console.error(err)
+      var envelope = {
+        from: from,
+        to: to
+      }
+      var message = 'Subject: ' + subject + '\n\n' + body
+      connection.send(envelope, message, function (err, info) {
+        connection.quit()
+        cb(err, info)
+      })
+    })
+  })
+}
+
+send('josh@lamassu.is', 'joshmh@gmail.com', 'Another test', 'Screen is stale.\n\nTest3', function (err, info) {
+  console.log(err)
+  console.log(info)
+})

lib/notifier.js

@@ -0,0 +1,90 @@
+'use strict'
+
+var R = require('ramda')
+
+var db = null
+
+function init (_db) {
+  db = _db
+}
+
+function toInt10 (str) { return parseInt(str, 10) }
+
+function jsonParse (event) {
+  return R.assoc('note', JSON.parse(event.note), event)
+}
+
+function sameState (a, b) {
+  return a.note.sessionId === b.note.sessionId && a.note.state === b.note.state
+}
+
+function checkStuckScreen (deviceEvents) {
+  var sortedEvents = R.sortBy(R.compose(toInt10, R.prop('device_time')), R.map(jsonParse, deviceEvents))
+  var noRepeatEvents = R.dropRepeatsWith(sameState, sortedEvents)
+  var lastEvent = R.last(noRepeatEvents)
+  var IDLE_STATES = ['idle', 'dualIdle']
+  var STALE_STATE = 60 * 1000
+
+  if (!lastEvent) {
+    console.log('No data for device')
+    return
+  }
+
+  var state = lastEvent.note.state
+  if (R.contains(state, IDLE_STATES)) {
+    console.log('Machine is idle [OK]')
+    return
+  }
+
+  console.log(lastEvent.age)
+  if (lastEvent.age > STALE_STATE) {
+    console.log('Stale state: ' + state + ' [ALERT]')
+    return
+  }
+
+  console.log('[OK]')
+}
+
+function checkStatus () {
+/*
+  - Fetch devices from devices table
+  - Fetch all machine_events into memory
+  - For each device, verify the following:
+    - stuck on screen
+      - last screen is >5m stale and is not idle screen
+      - report stuck on screen and name of screen
+    - not scanning qr codes?
+    - low bitcoins -- need a separate strategy, but server has this info
+      - var fiatBalance = plugins.fiatBalance();
+    - machine isn't pinging server
+*/
+  db.devices(function (err, devices) {
+    if (err) return console.error(err)
+
+    db.machineEvents(function (err, events) {
+      if (err) return console.error(err)
+
+      devices.rows.forEach(function (deviceRow) {
+        var deviceFingerprint = deviceRow.fingerprint
+        var deviceEvents = events.rows.filter(function (eventRow) {
+          return eventRow.device_fingerprint === deviceFingerprint
+        })
+
+        console.log('DEVICE: ' + deviceRow.fingerprint)
+        checkStuckScreen(deviceEvents)
+      })
+    })
+  })
+}
+
+var _db = require('./postgresql_interface')
+var connectionString = 'postgres://lamassu:lamassu@localhost/lamassu'
+_db.init(connectionString)
+
+init(_db)
+
+checkStatus()
+
+// TODO: How to know which alerts have been sent?
+// Send alert every 10m while alert state
+// Remember last sent alert in memory

lib/postgresql_interface.js

@@ -109,6 +109,7 @@ function query(client, queryStr, values, cb) {
   client.query(queryStr, values, function(err, results) {
     if (err) {
       if (!isLowSeverity(err)) {
+        console.error(err)
         console.log(queryStr);
         console.log(values);
       }
@@ -127,6 +128,7 @@ function silentQuery(client, queryStr, values, cb) {
   client.query(queryStr, values, function(err) {
     if (err) {
       if (!isLowSeverity(err)) {
+        console.error(err)
         console.log(queryStr);
         console.log(values);
       }
@@ -506,12 +508,12 @@ exports.machineEvent = function machineEvent(rec, cb) {
   var TTL = 2 * 60 * 60 * 1000
   connect(function(cerr, client, done) {
     if (cerr) return cb(cerr);
-    var fields = ['id', 'device_fingerprint', 'event_type', 'note', 'device_time', 'created']
+    var fields = ['id', 'device_fingerprint', 'event_type', 'note', 'device_time']
     var sql = getInsertQuery('machine_events', fields, false)
-    var values = [rec.id, rec.fingerprint, rec.eventType, rec.note, rec.deviceTime, new Date().toISOString()]
+    var values = [rec.id, rec.fingerprint, rec.eventType, rec.note, rec.deviceTime]
 
-    var deleteSql = 'DELETE FROM machine_events WHERE created < $1';
-    var deleteValues = [new Date(Date.now() - TTL).toISOString()];
+    var deleteSql = 'DELETE FROM machine_events WHERE (EXTRACT(EPOCH FROM (now() - created))) * 1000 > $1';
+    var deleteValues = [TTL];
 
     query(client, deleteSql, deleteValues, function(err) {
       if (err) console.error(err)
@@ -524,6 +526,31 @@ exports.machineEvent = function machineEvent(rec, cb) {
   });
 };
 
+exports.devices = function devices(cb) {
+  connect(function(cerr, client, done) {
+    if (cerr) return cb(cerr);
+    var sql = 'SELECT fingerprint, name FROM devices ' +
+      'WHERE authorized=$1';
+    query(client, sql, [true], function(err, results) {
+      done();
+      if (err) return cb(err);
+      cb(null, results)
+    })
+  })
+}
+
+exports.machineEvents = function machineEvents(cb) {
+  connect(function(cerr, client, done) {
+    if (cerr) return cb(cerr);
+    var sql = 'SELECT *, (EXTRACT(EPOCH FROM (now() - created))) * 1000 AS age FROM machine_events'
+    query(client, sql, [], function(err, results) {
+      done();
+      if (err) return cb(err);
+      cb(null, results)
+    })
+  })
+}
+
 /*
 exports.init('postgres://lamassu:lamassu@localhost/lamassu');
 connect(function(err, client, done) {

lib/sms.js

@@ -0,0 +1,12 @@
+var accountSid = 'AC5b08587439d5e0adb5132d133941ab76'
+var authToken = 'b4acf1212c0271d852706d17711e9670'
+var client = require('twilio')(accountSid, authToken)
+
+client.messages.create({
+  body: '[Lamassu] ALERT Stale screen: acceptingFirstBill',
+  to: '+359899948650',
+  from: '+16035383222'
+}, function (err, message) {
+  console.log(err)
+  console.log(message)
+})