Poise: Reusable Cookbook Patterns

Transcript

1. Cookbook Patterns Poise Noah Kantrowitz
2. Me •PSF + PyCon •Balanced •Chef •Making things
3. •What? •Why? •How?
7. cook·book A description of a piece of infrastructure
8. Role Cookbook Recipe Resource
10. leak·y ab·strac·tion Incomplete hiding of internal details
12. •Fork (and patch) •Wrapper •Rewind
13. Inheritance
15. 10x
16. Poise
17. •Helpers •DSL extensions •Patterns
19. •jenkins •jenkins_job •jenkins_credential •jenkins_plugin
20. •ci_job •ci_pipeline •name_ci_pipeline
21. Using Poise
22. class Chef class ... ... end end
23. Resource::Foo < Resource Provider::Foo < Provider
24. •Foo => foo •FooBar => foo_bar •FOO => f_o_o
25. class ... include Poise ... end
26. action(:one, :two) attribute(:name, kind_of: String)
27. attribute(:opts, option_collector: true ) opts do foo 'bar' end
28. attribute(:path, default: lazy { ... })
29. attribute(:config, template: true) attribute('', template: true)
30. foo ... do source 'cfg.erb' end foo ... do content 'x=1' end
31. file ... do content nr.content end
32. class Provider... def action_one ... end end
33. notifying_block do ... end
34. include_recipe ...
35. Putting It Together
36. class Res::Foo < Res include Poise action(:one) attribute(:pkg) attribute(:ver) end
37. def action_one notifying_block do install_pkg write_config end end
38. def install_pkg package nr.pkg do version nr.ver end end
39. def install_pkg r = super r.package_name( 'my-thing') r end
40. Next Steps
41. Subresources
42. Cookbook Tiers
43. •poise-proxy •poise-appenv •poise-service?
44. •attribute(node: ...) •group do ... end •after(:one)
46. Thank You