lamassu-server/lib/notifier.js
2016-04-21 18:29:18 +03:00

141 lines
3.3 KiB
JavaScript

'use strict'
var R = require('ramda')
var db = null
var getBalance = null
function init (_db, _getBalance) {
db = _db
getBalance = _getBalance
}
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 checkBalance () {
var LOW_BALANCE_THRESHOLD = 10
if (getBalance() < LOW_BALANCE_THRESHOLD) {
return [{code: 'lowBitcoinBalance'}]
}
return []
}
function checkPing (deviceEvents) {
var sortedEvents = R.sortBy(R.compose(toInt10, R.prop('device_time')), R.map(jsonParse, deviceEvents))
var lastEvent = R.last(sortedEvents)
var NETWORK_DOWN_TIME = 2 * 60 * 1000
if (!lastEvent) {
return [{code: 'ping'}]
}
console.log('DEBUG6')
console.log(lastEvent)
if (lastEvent.age > NETWORK_DOWN_TIME) {
return [{code: 'ping'}]
}
return []
}
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) {
return []
}
var state = lastEvent.note.state
if (R.contains(state, IDLE_STATES)) {
return []
}
console.log(lastEvent.age)
if (lastEvent.age > STALE_STATE) {
return [{code: 'stale', state: state}]
}
return []
}
function checkStatus (cb) {
/*
- Fetch devices from devices table
- Fetch all machine_events into memory
- For each device, verify the following:
v 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?
v low bitcoins -- need a separate strategy, but server has this info
- var fiatBalance = plugins.fiatBalance();
v machine isn't pinging server
- jam checking, need report from l-m [next release]
*/
var alerts = []
alerts = R.concat(alerts, checkBalance())
db.devices(function (err, devices) {
if (err) return cb(err)
db.machineEvents(function (err, events) {
if (err) return cb(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)
alerts = R.concat(alerts, checkStuckScreen(deviceEvents))
alerts = R.concat(alerts, checkPing(deviceEvents))
console.log(deviceFingerprint)
console.log(alerts)
// TODO: Use promises to do this right
})
})
})
}
var _db = require('./postgresql_interface')
var connectionString = 'postgres://lamassu:lamassu@localhost/lamassu'
var _getBalance = function () {
return 12
}
_db.init(connectionString)
init(_db, _getBalance)
checkStatus(function (err, alerts) {
if (err) console.log(err)
console.log('DEBUG1')
console.log(alerts)
})
// TODO: How to know which alerts have been sent?
// Send alert every 10m while alert state
// Remember last sent alert in memory
/*
- check balances for all cryptos
- update idle screens
*/