Click-free releases & the making of a CLI app

Transcript

1. Adam Ahmed - Senior Android Engineer at TravelPerk - @oheyadam Click-free releases & the making of a CLI app
2. Agenda
3. Agenda • Our release process
4. Agenda • Our release process • What does our CLI app do?
5. Agenda • Our release process • What does our CLI app do? • The making of a CLI app
6. Agenda • Our release process • What does our CLI app do? • The making of a CLI app • Build & distribution
7. Agenda • Our release process • What does our CLI app do? • The making of a CLI app • Build & distribution • Consuming it on Android
8. Agenda • Our release process • What does our CLI app do? • The making of a CLI app • Build & distribution • Consuming it on Android • Automating everything
9. What does our release process look like?
10. What does our release process look like? Preparation
11. What does our release process look like? Preparation • Increment version across apps
12. What does our release process look like? Preparation • Increment version across apps • Update database entries
13. What does our release process look like? Preparation • Increment version across apps • Update database entries • Notify stakeholders
14. What does our release process look like? Preparation QA
15. What does our release process look like? Preparation QA • Cut release branches
16. What does our release process look like? Preparation QA • Cut release branches • Pull latest strings
17. What does our release process look like? Preparation QA • Cut release branches • Pull latest strings • Create & distribute internal release builds to testers
18. What does our release process look like? Preparation QA • Cut release branches • Pull latest strings • Create & distribute internal release builds to testers • Update database entries
19. What does our release process look like? Preparation QA • Cut release branches • Pull latest strings • Create & distribute internal release builds to testers • Update database entries • Notify stakeholders
20. What does our release process look like? Rollout
21. What does our release process look like? Rollout • Staggered rollout
22. What does our release process look like? Rollout • Staggered rollout • Update database entries
23. What does our release process look like? Rollout • Staggered rollout • Update database entries • Notify stakeholders
24. What does our release process look like? Completion
25. What does our release process look like? Completion • Create a PR to merge our release branch back into main
26. What does our release process look like? Completion • Create a PR to merge our release branch back into main • Create release tags
27. What does our release process look like? Completion • Create a PR to merge our release branch back into main • Create release tags • Generate internal release notes
28. What does our release process look like? Completion • Create a PR to merge our release branch back into main • Create release tags • Generate internal release notes • Update database entries
29. What does our release process look like? Completion • Create a PR to merge our release branch back into main • Create release tags • Generate internal release notes • Update database entries • Notify stakeholders
30. Users receive our updates. Good times
31. That’s a lie. Hot fi xes exist Users receive our updates. Good times
32. Hot fi xes
33. • Same steps, albeit slightly accelerated Hot fi xes
34. • Same steps, albeit slightly accelerated • Extra decisions trees thrown in for good measure Hot fi xes
35. I hope you sensed a theme
36. Fastlane
37. Fastlane App automation done right
38. Fastlane App automation done right. Or is it?
39. Fastlane App automation done right. Or is it? • Written in Ruby
40. Fastlane App automation done right. Or is it? • Written in Ruby • We couldn’t iterate easily
41. Fastlane App automation done right. Or is it? • Written in Ruby • We couldn’t iterate easily • We couldn’t write tests for it
42. Fastlane App automation done right. Or is it? • Written in Ruby • We couldn’t iterate easily • We couldn’t write tests for it • Performed build-logic operations outside of our codebase
43. Fastlane App automation done right. Or is it? • Written in Ruby • We couldn’t iterate easily • We couldn’t write tests for it • Performed build-logic operations outside of our codebase • Needed to replicate the same Ruby environment across di ff erent hosts
44. Fastlane App automation done right. Or is it? • Written in Ruby • We couldn’t iterate easily • We couldn’t write tests for it • Performed build-logic operations outside of our codebase • Needed to replicate the same Ruby environment across di ff erent hosts • Fastlane Swift is kind of the same
45. We just weren’t able to iterate
46. Until we built Kronos We just weren’t able to iterate
47. Kronos
48. • Written entirely in Kotlin Kronos
49. • Written entirely in Kotlin • Distributed as CLI app Kronos
50. • Written entirely in Kotlin • Distributed as CLI app • Fully tested / testable Kronos
51. • Written entirely in Kotlin • Distributed as CLI app • Fully tested / testable • Allowed us to iterate Kronos
52. Iterate?
53. Improvements • Unit & integration tests for code paths we knew were brittle
54. Improvements • Unit & integration tests for code paths we knew were brittle • Our release process has state
55. Improvements • Unit & integration tests for code paths we knew were brittle • Our release process has state • Automatically generates internal release notes
56. Improvements • Unit & integration tests for code paths we knew were brittle • Our release process has state • Automatically generates internal release notes • Android releases are entirely automated
57. The making of a CLI app
58. The making of a CLI app • We just used Clikt!
59. The making of a CLI app • We just used Clikt! • Allowed us to represent CLI commands as classes
60. The making of a CLI app • We just used Clikt! • Allowed us to represent CLI commands as classes • …
61. The making of a CLI app • We just used Clikt! • Allowed us to represent CLI commands as classes • … • Pro fi t!
62. How do we build & distribute Kronos?
63. Build & Distribution • Ideally, we want this
64. Build & Distribution • Ideally, we want this • Kronos is just a JVM library
65. Build & Distribution • Ideally, we want this • Kronos is just a JVM library • Can Gradle help?
66. Build & Distribution • Ideally, we want this • Kronos is just a JVM library • Can Gradle help? • Uber-jars
67. Build & Distribution • Ideally, we want this • Kronos is just a JVM library • Can Gradle help? • Uber-jars • Publishing
68. Build & Distribution • Ideally, we want this • Kronos is just a JVM library • Can Gradle help? • Uber-jars • Publishing
69. Build & Distribution • Ideally, we want this • Kronos is just a JVM library • Can Gradle help? • Uber-jars • Publishing
70. Build & Distribution • Ideally, we want this • Kronos is just a JVM library • Can Gradle help? • Uber-jars • Publishing
71. Invoking it from the Android project
74. Invoking it from the Android project • Create a Gradle task
75. Invoking it from the Android project • Create a Gradle task
76. Invoking it from the Android project • Create a Gradle task • Add the dependency to your classpath
77. Invoking it from the Android project • Invoking this CLI • Add the dependency to your classpath
79. Invoking it from the Android project • Invoking this CLI • Add the dependency to your classpath
80. Invoking it from the Android project • Invoking this CLI • Add the dependency to your classpath
81. Invoking it from the Android project • Invoking this CLI • Add the dependency to your classpath • Pro fi t!
82. Automating everything
83. Automating everything Zapier subscribes to Calendar events
84. Automating everything Zapier subscribes to Calendar events Zapier calls into CircleCI API
85. Automating everything Zapier subscribes to Calendar events Zapier calls into CircleCI API CCI spins up an instance, runs desired work fl ow
86. Automating everything Zapier subscribes to Calendar events Zapier calls into CircleCI API CCI spins up an instance, runs desired work fl Projects call into Kronos
87. Adam Ahmed - Senior Android Engineer at TravelPerk - @oheyadam Thanks! We’re hiring