ucon-ajn33

いかにCloudEndpointsをやめSwaggerを愛するようになったか ajn #33
http://gcpja.connpass.com/event/30761/

Transcript

1. ͍͔ʹCloudEndpointsΛ΍Ί SwaggerΛѪ͢ΔΑ͏ʹͳ͔ͬͨ Θ͔Ί ·͞ͻΖ
2. Θ͔Ί ·͞ͻΖ @v vakame TypeScript Masahiro Wakame DefinitelyTyped appengine/go photo from golang.org/doc/gopher/
3. Google API Discovery Service ୭͔஌ͬͯΔʁ
4. APIs Explorer is ਆ https://developers.google.com/apis-explorer/
5. APIs Explorer • ୭Ͱ΋؆୯ʹ࢖͑Δ • ࣮ࡍͷAPI͕ୟ͔ΕΔ • ݁ՌΛڞ༗͠΍͍͢ • ίʔυ͔ΒUI͕ੜ੒͞Ε͍ͯΔ • ίʔυ == CloudEndpoints CloudEndpoints→APIs Explorer
6. but…
7. GoogleͷҋͷྖҬ Ϣʔβ GAE ҋ path mapping request format Version੾ସޙreqΛͳ͔ͬͨࣄʹ custom domainෆՄ go-endpoints͕ͨ·ʹͭΒ͍
8. Swagger ͦ͜ͰSwaggerͰ͢Α
9. ✨swagger✨ • Swagger͕Ұ൪ྑͦ͞͏ʂ • RAML, JSON Schema etc… • Open API Initiativeൃ଍ • Swagger࢓༷Λbaseʹ • ௕͍΋ͷʹ͸ר͔Ε͍ͨ • Qiitaʹൺֱ·ͱΊ goo.gl/BLS3uH
10. ucon࡞Δ࿩ طଘ࣮૷ௐ΂͚ͨͲ ࣗ෼Ͱ࡞Δ͜ͱʹͨ͠ https://github.com/favclip/ucon
11. લఏ • appengineറΓʹ͸͠ͳ͍ • ͱ͸͍͑appengineͰ࢖͑ͳ͍ͱࠔΔ • net/httpʹ͍ۙAPI • ॊೈੑ • go-endpointsͱͷޓ׵ੑ • swagger͸opt-in ΍͍ͬͯ͘
12. ໊෇͚਌ ๭a2c͞Μ uconͱ ໊෇͚Α͏ʂ
13. ܾΊͨޙ ๭a2c͞Μ ←ΏΔ͞ͳ͍
14. ಈ͘σϞ ؒʹ߹Θͳ͍͔ͱࢥͬͨΒ ͍ͭͷؒʹ͔΍ͬͯ͋ͬͨ
15. TODO • github.com/vvakame/ucon-todo • ucon-todo.appspot.com/ • ucon-todo.appspot.com/swagger-ui/ • ࣭ૉ ಈ͘ʂ
16. ར༻ࣄྫ
17. ར༻αΠτ • favclip • ٕज़ॻయ • Topgateࣾ಺Ͱ͸ࠓޙ࢖͍ͬͯ͘͸ͣ…
18. ࢓༷঺հ
19. ucon Features • net/http ͱͷྨࣅੑ • Routing • Method, Path Matching • Middleware • Bubble • Dependency Injection • Plugin
20. API likes net/http ucon.HandleFunc("GET", "/", func(w http.ResponseWriter, r *http.Request) {})
21. API likes net/http ucon.HandleFunc("GET", "/", func(w http.ResponseWriter, r *http.Request) {})
22. Routing ucon.HandleFunc(“*", “/“, … ucon.HandleFunc(“OPTIONS", “/“, … ucon.HandleFunc(“GET", “/“, … ucon.HandleFunc(“POST", “/“, … ucon.HandleFunc(“GET", “/api/user“, … ucon.HandleFunc(“GET", “/api/user/me“, … ucon.HandleFunc(“GET", “/api/user/{id}“, …
23. Routing rule • METHOD͕Ұக͢Δ • * ࢦఆ΋Մ ݫີҰக༏ઌ • Request Path͕Ұக͢Δ • ෳ਺ީิ͋Δ৔߹ΑΓ௕͍અҰக • Request GET /api/user/123 • GET /api/user/{id} • ❌ GET /api/user • ઌొ࿥༏ઌ
24. Middleware • 1 requestຖͷॲཧʹհೖ • JavaͰ͍͏ServletFilter • ASP.NET MVCͰ͍͏Filter • Logging, DI, CORS༻Header, error→JSONม׵ etc, etc…
25. Middleware Middleware Middleware Middleware Handler ServeHTTP DI Cache-Control Cookie appengine.Context etc, etc… CORS Header Path, Query, Body → JSON *http.Request http.ResponseWriter
26. Middleware type MiddlewareFunc func(b *Bubble) error type Bubble struct {
 R *http.Request
 W http.ResponseWriter
 Context context.Context
 RequestHandler interface{}
 
 ArgumentTypes []reflect.Type
 Arguments []reflect.Value
 Returns []reflect.Value
 }
 func (b *Bubble) Next() error { …
 } func (b *Bubble) do() error {
 hv := reflect.ValueOf(b.handler())
 …
 
 b.Returns = hv.Call(b.Arguments)
 
 return nil
 } var httpReqType = reflect.TypeOf((*http.Request)( var httpRespType = reflect.TypeOf((*http.Response func HTTPRWDI() MiddlewareFunc {
 return func(b *Bubble) error {
 for idx, argT := range b.ArgumentTypes {
 if argT == httpReqType {
 b.Arguments[idx] = reflect.ValueOf(b.R)
 continue
 }
 if argT == httpRespType {
 b.Arguments[idx] = reflect.ValueOf(b.W)
 continue
 }
 }
 
 return b.Next()
 }
 }
27. built-in middleware • HTTPRWDI • *http.Request, http.ResponseWriterͷDI • NetContextDI • net/contextͷContextΛDI
28. built-in middleware • RequestObjectMapper • path parameter, query paramter, post bodyΛObjectʹม׵͠DI • ResponseMapper • Handler͕returnͨ͠Object΍errorΛ JSONʹม׵
29. Plugin • ϓϩηεىಈ࣌1ճ͚ͩಈ࡞ • શHandlerͷ૸ࠪ • Handler→Pluginؒͷ஋ͷ఻ୡػߏ • swagger͸plugin • શHandlerͷ৘ใ͔Βॲཧ • swagger.jsonग़ྗ༻Handlerͷ௥Ճ
30. Plugin type pluginContainer struct {
 base interface{}
 }
 
 type HandlersScannerPlugin interface {
 HandlersScannerProcess(m *ServeMux, rds []*RouteDefinition) error
 }
 type RouteDefinition struct {
 Method string
 PathTemplate *PathTemplate
 HandlerContainer HandlerContainer
 } func (m *ServeMux) Prepare() {
 for _, plugin := range m.plugins {
 used := false
 if sc := plugin.HandlersScanner(); sc != nil {
 err := sc.HandlersScannerProcess(m, m.router.handlers)
 if err != nil {
 panic(err)
 }
 used = true
 }
 if !used {
 panic(fmt.Sprintf("unused plugin: %#v", plugin))
 }
 }
 }
31. Plugin type pluginContainer struct {
 base interface{}
 }
 
 type HandlersScannerPlugin interface {
 HandlersScannerProcess(m *ServeMux, rds []*RouteDefinition) error
 }
 type RouteDefinition struct {
 Method string
 PathTemplate *PathTemplate
 HandlerContainer HandlerContainer
 } func (m *ServeMux) Prepare() {
 for _, plugin := range m.plugins {
 used := false
 if sc := plugin.HandlersScanner(); sc != nil {
 err := sc.HandlersScannerProcess(m, m.router.handlers)
 if err != nil {
 panic(err)
 }
 used = true
 }
 if !used {
 panic(fmt.Sprintf("unused plugin: %#v", plugin))
 }
 }
 }
32. swagger plugin usage swPlugin := swagger.NewPlugin(…)
 ucon.Plugin(swPlugin) s := &fooService{}
 
 tag := swPlugin.AddTag(&swagger.Tag{Name: "Foo", Description: ""})
 var info *swagger.HandlerInfo
 
 info = swagger.NewHandlerInfo(s.List)
 ucon.Handle("GET", "/api/foo/{id}", info)
 info.Description, info.Tags = "FooΛ1݅औಘ͢Δ", []string{tag.Name} … type IntIDRequest struct {
 ID int64 `json:"id,string"`
 }
 func (s *fooService) Get(r *http.Request, req *IntIDRequest) (*FooJSON, error) { … }
33. swagger plugin usage swPlugin := swagger.NewPlugin(…)
 ucon.Plugin(swPlugin) s := &fooService{}
 
 tag := swPlugin.AddTag(&swagger.Tag{Name: "Foo", Description: ""})
 var info *swagger.HandlerInfo
 
 info = swagger.NewHandlerInfo(s.List)
 ucon.Handle("GET", "/api/foo/{id}", info)
 info.Description, info.Tags = "FooΛ1݅औಘ͢Δ", []string{tag.Name} … type IntIDRequest struct {
 ID int64 `json:"id,string"`
 }
 func (s *fooService) Get(r *http.Request, req *IntIDRequest) (*FooJSON, error) { … } go-endpointsͱͷޓ׵ੑ!
34. ίʔυن໛ͷ࿩ • ຊମ 1339ߦ • ls | grep .go | grep -v _test.go | xargs wc -l • swaggerϓϥάΠϯ 1138ߦ • find ./swagger -type f | grep .go | grep -v sample | grep -v _test.go | xargs wc -l
35. એ఻
36. 6/25 (౔) 11:00ʙ17:00 ळ༿ݪ ௨ӡձؗ ٕज़ॻΦϯϦʔଈചձ ݸਓ੍࡞ͷٕज़ॻ✕56ஂମ techbookfest.org
37. ࣗલϥΠϒϥϦ঺հ ࢖ͬͯΈͯͶʂ
38. GAE༻ϥΠϒϥϦ࡞ͬͯ·͢ • testerator github.com/favclip/testrator • UnitTestߴ଎Խ • qbg github.com/favclip/qbg • Datastore༻TypeSafeΫΤϦϏϧμ • smg github.com/favclip/smg • Search API༻TypeSafeϥού productionͰར༻தʂ
39. ͦͷଞϥΠϒϥϦ΋࡞ͬͯ·͢ • jwg github.com/favclip/jwg • JSON༻ͷTagͱ͔ࣗಈͰ΍Δ΍ͭଞ • golidator github.com/favclip/golidator • Validator ศར