Where art thou, my error?

This is my talk at GraphQL Finland 2018 (https://graphql-finland.fi) that gives both an overview of patterns being used
to surface errors that occur during GraphQL query execution, as well as what our (artsy.net) approach is.

You can find all original materials in this repo https://github.com/alloy/graphql-finland.

Finally, you can find a blog post version here (http://artsy.github.io/blog/2018/10/19/where-art-thou-my-error/), where
you can also leave comments with your feedback on all of this 🙏

Transcript

1. Where art thou, my error? @alloy - artsy.net h"ps:/ /github.com/alloy/graphql-finland
2. S"ll early days
3. S"ll early days
4. !
5. Errors vs Errors
6. GraphQL Errors
7. GraphQL Errors
8. Excep&ons
9. What’s the problem?
10. Par$al data
11. Par$al data
12. Par$al data
13. Par$al data
14. Par$al data
15. Communicate error
16. Communicate error
17. Possible solu*ons
18. GraphQL Errors and reject en*re response h"ps://u.nu/atrh h"ps://u.nu/pjv-
19. GraphQL Errors with metadata h"ps://u.nu/r5-2
20. GraphQL Errors with metadata
21. GraphQL Errors with metadata While convenient, the weakness of this approach is that the format of the valida6on error messages is not captured by your schema, making it bri;le to changes. Unless you maintain 6ght control of both server and client, you should keep the error responses as simple as possible. For muta6ons, it can be worthwhile defining these valida6on errors as first class ci6zens within your schema.
22. Extra (muta*on) error fields h"ps://u.nu/th7y
23. Extra (muta*on) error fields
24. Extra (muta*on) error fields h"ps://u.nu/th7y
25. Extra error field & type h"ps://u.nu/-3pw
26. Extra error field & type
27. Extra error field & type
28. Extra error field & type h"ps://u.nu/-3pw Side-note: h"ps://u.nu/i0yg
29. Recap •Use GraphQL •In context •All opera5ons •Explicit status
30. Excep&ons as first-class ci+zens
31. Excep&ons as first-class ci+zens
32. Excep&ons as first-class ci+zens
33. Excep&ons as first-class ci+zens
34. Excep&ons as first-class ci+zens
35. How we use it
36. Types
37. Types
38. Types
39. Types
40. Types
41. Types Side-note: h,ps://u.nu/c1ye
42. Field naming ‘something’ or error
43. Field naming
44. Field naming
45. Field naming
46. Downside of union
47. Downside of union Side-note: h,ps://u.nu/c29p
48. Example of query usage
49. Example of muta-on usage
50. Final thoughts !
51. Final thoughts ! @alloy
52. Final thoughts !"#
53. Final thoughts …to ‘REST’
54. @alloy artsy.net h"ps:/ /github.com/ alloy/graphql-finland