Prying Open The Black Box (EmberConf 2018)

Slide 1

Slide 1 text

Godfrey chan

Slide 2

Slide 2 text

@chancancode

Slide 3

Slide 3 text

DEBUGGING

Slide 4

Slide 4 text

failures

Slide 5

Slide 5 text

2017

Slide 6

Slide 6 text

2017

Slide 7

Slide 7 text

No content

Slide 8

Slide 8 text

No content

Slide 9

Slide 9 text

2017

Slide 10

Slide 10 text

No content

Slide 11

Slide 11 text

! TV Station Operator " TV Station Manager # Hawaii-EMA Staff 1 $ Hawaii-EMA Staff 2 % Hawaii-EMA Supervisor Drill FUUUUU

Slide 12

Slide 12 text

⛔ TypeError: Cannot read property 'get' of undefined (application.js:100) at Class.model (endpoints.js:41) at Class.deserialize (vendor.js:54008) at applyHook (vendor.js:71256) at UnresolvedHandlerInfoByParam.runSharedModelHook (vendor.js:71709) at UnresolvedHandlerInfoByParam.getModel (vendor.js:71943) at tryCatcher (vendor.js:73328) at invokeCallback (vendor.js:73506) at publish (vendor.js:73492) at vendor.js:64571 at invoke (vendor.js:32075)

Slide 13

Slide 13 text

⛔ Alert: Incoming missile detected (tv-station.js:3) at Class.model (endpoints.js:41) at Class.deserialize (vendor.js:54008) at applyHook (vendor.js:71256) at UnresolvedHandlerInfoByParam.runSharedModelHook (vendor.js:71709) at UnresolvedHandlerInfoByParam.getModel (vendor.js:71943) at tryCatcher (vendor.js:73328) at invokeCallback (vendor.js:73506) at publish (vendor.js:73492) at vendor.js:64571 at invoke (vendor.js:32075)

Slide 14

Slide 14 text

⛔ Alert: Incoming missile detected (tv-station.js:3) at ! StationOperator.broadcastMissileAlert (tv-station.js:3) at " StationManager.didReceiveMissileAlert (tv-station.js:15) at # EMAStaff.sendMissileAlert (ema.js:23) at $ EMAStaff.notify (ema.js:27) at % EMASupervisor.runDrill (ema.js:7)

Slide 15

Slide 15 text

No content

Slide 16

Slide 16 text

Look, no more error!

Slide 17

Slide 17 text

isExercise isExercise

Slide 18

Slide 18 text

p ause on exceptions isExercise isExercise

Slide 19

Slide 19 text

p ause on exceptions

Slide 20

Slide 20 text

It me

Slide 21

Slide 21 text

It me

Slide 22

Slide 22 text

It me isExercise isExercise isExercise

Slide 23

Slide 23 text

w at isExercise isExercise isExercise isExercise

Slide 24

Slide 24 text

OOPSIE isExercise isExercise isExercise isExercise

Slide 25

Slide 25 text

Nailed it isExercise isExercise

Slide 26

Slide 26 text

Y tho isExercise isExercise isExercise

Slide 27

Slide 27 text

naice OHHHH isExercise isExercise isExercise

Slide 28

Slide 28 text

2003

Slide 29

Slide 29 text

No content

Slide 30

Slide 30 text

No content

Slide 31

Slide 31 text

Slide 32

Slide 32 text

launch orbit re-entry FlightControl.reEntry commitDeorbitBurn roll ⛔ Emergency: loss of vehicle (mission-control.js:3) at Orbiter.onDestroy (orbiter.js:37) at Orbiter.executeRoll (orbiter.js:15) at Orbiter.commitDeorbitBurnSequence (orbiter.js:23) at FlightControl.reEntry (mission-control.js:27) at Mission.run (sts-107.html:7) planning Mission.run NO HOLE ' ' ' ' Hole on left wing

Slide 33

Slide 33 text

No content

Slide 34

Slide 34 text

STEP OVER!

Slide 35

Slide 35 text

STEP OVER!

Slide 36

Slide 36 text

STEP OVER!

Slide 37

Slide 37 text

STEP OVER!

Slide 38

Slide 38 text

STEP OVER!

Slide 39

Slide 39 text

STEP OVER!

Slide 40

Slide 40 text

STEP INTO

Slide 41

Slide 41 text

STEP INTO

Slide 42

Slide 42 text

STEP INTO

Slide 43

Slide 43 text

STEP OUT!

Slide 44

Slide 44 text

STEP OUT!

Slide 45

Slide 45 text

STEP OUT!

Slide 46

Slide 46 text

Resume

Slide 47

Slide 47 text

No content

Slide 48

Slide 48 text

No content

Slide 49

Slide 49 text

No content

Slide 50

Slide 50 text

No content

Slide 51

Slide 51 text

No content

Slide 52

Slide 52 text

No content

Slide 53

Slide 53 text

No content

Slide 54

Slide 54 text

No content

Slide 55

Slide 55 text

WOW!

Slide 56

Slide 56 text

APPLICATION ROUTE P ARENT ROUTE CHILD ROUTE APP BOOT DATA LOADED MISSING RELATIONSHIPS

Slide 57

Slide 57 text

Did you know...

Slide 58

Slide 58 text

BREAKPOINTS

Slide 59

Slide 59 text

CLICK

Slide 60

Slide 60 text

No content

Slide 61

Slide 61 text

No content

Slide 62

Slide 62 text

No content

Slide 63

Slide 63 text

CLICK

Slide 64

Slide 64 text

CLICK

Slide 65

Slide 65 text

Continuation

Slide 66

Slide 66 text

I need to go here

Slide 67

Slide 67 text

No content

Slide 68

Slide 68 text

shut up!

Slide 69

Slide 69 text

No content

Slide 70

Slide 70 text

Click

Slide 71

Slide 71 text

Debug functions

Slide 72

Slide 72 text

import Route from '@ember/routing/route'; export default Route.extend({ beforeModel(params) { let collectorUrl = params.queryParams.collectorUrl; if (collectorUrl) { console.log(`Using collectorUrl ${collectorUrl}...`); this.set('config.collectorWsUrl', collectorUrl); } else { console.log(`Missing collectorUrl!`); } }, // ... });

Slide 73

Slide 73 text

import Route from '@ember/routing/route'; import { debug } from '@ember/debug'; export default Route.extend({ beforeModel(params) { let collectorUrl = params.queryParams.collectorUrl; if (collectorUrl) { debug(`Using collectorUrl ${collectorUrl}...`); this.set('config.collectorWsUrl', collectorUrl); } else { debug(`Missing collectorUrl!`); } }, // ... }); Dev only

Slide 74

Slide 74 text

import Route from '@ember/routing/route'; import { assert, debug } from '@ember/debug'; export default Route.extend({ beforeModel(params) { let collectorUrl = params.queryParams.collectorUrl; assert(`Missing collectorUrl!`, collectorUrl); debug(`Using collectorUrl ${collectorUrl}...`); this.set('config.collectorWsUrl', collectorUrl); }, // ... }); Dev only

Slide 75

Slide 75 text

Templates & UI

Slide 76

Slide 76 text

{{#link-to "settings.app" model.app}}People & Settings{{/link- {{#if model.app.oss}}

Public Link< {{/if}} {{/unless}} {{debugger}} {{#if model.error}} {{partial "endpoints/error"}} {{else}} {{#if model.app.isLocked}} {{partial "endpoints/locked"}} {{else}} {{app-overview-graph model=model.app timestamp=model.frozenTimestamp dur