Goサーバをあえて不安定にするパッケージを作った話

Transcript

1. 1.

   ©2018 Wantedly, Inc. GoαʔόΛෆ҆ఆʹ͢Δ ύοέʔδΛ࡞ͬͨ࿩ 31.Jan.2019 - Hazumi Ichijo

2. 2.

   ©2018 Wantedly, Inc. ࣗݾ঺հ Ұᑍ
   ୺੅
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3. 3.

   ©2018 Wantedly, Inc. མͪͯͯ΋ྑ͍αʔϏε ϝΠϯͷαʔϏε Ϣʔβʔ

4. 4.

   ©2018 Wantedly, Inc. མͪͯͯ΋ྑ͍αʔϏε ϝΠϯͷαʔϏε Ϣʔβʔ མͪͯͯ΋ྑ͍αʔϏε ϝΠϯͷαʔϏε Ϣʔβʔ

5. 5.

   ©2018 Wantedly, Inc. མͪͯͯ΋ྑ͍αʔϏε ϝΠϯͷαʔϏε Ϣʔβʔ མͪͯ΋Өڹ͕ग़ͳ͍Α͏ʹ͢ΔͨΊʹɺ $JSDVJU#SFBLFSͱ͍͏΋ͷ͕ଘࡏ͢Δ
    IUUQTHJUIVCDPNTPOZHPCSFBLFS
   

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6. 6.

   ©2018 Wantedly, Inc. CircuitBreaker͕ຊ౰ʹ͏·͘ಈ͔͘ෆ҆ => ಈ͔͚ͩ͘γϡοͱ֬ೝ͍ͨ͠

7. 7.

   ©2018 Wantedly, Inc.  Ͳ͏΍ͬͯෆ҆ఆʹ͢Δ͔
   w ίʔυ಺ʹQBOJDͱ͔ΛೖΕΔʁ
    Ͳ͏͍ͬͨৼΔ෣͍Λ͢Δ΂͖͔
   w

   ൪୆Λฦ͢ʁϨεϙϯεΛ஗͘͢Δʁ
8. 8.

   ©2018 Wantedly, Inc. 
   Ͳ͏΍ͬͯෆ҆ఆʹ͢Δ͔ Ϣʔβʔ ϝΠϯͷαʔό͔Βݟ͑Δͷ͸ Ϩεϙϯε͚ͩ IUUQH31$

9. 9.

   ©2018 Wantedly, Inc. 
   Ͳ͏΍ͬͯෆ҆ఆʹ͢Δ͔ Ϣʔβʔ ͚ͩ͜͜ʹෆ҆ఆ͞Λ͍ΕΕ͹͍͍

10. 10.

    ©2018 Wantedly, Inc. 
    Ͳ͏΍ͬͯෆ҆ఆʹ͢Δ͔ Ϣʔβʔ H31$
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    IUUQ
    
    
    .JEEMFXBSF

11. 11.

    ©2018 Wantedly, Inc. 
    Ͳ͏͍ͬͨৼΔ෣͍Λ͢΂͖͔ https://engineering.linkedin.com/blog/2018/05/linkedout--a-request-level-failure-injection-framework -JOLFEJOͷ'BJMVSF
    *OKFDUJPO
    'SBNFXPSL
    Ͱ͸
    w &SSPS
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    w 5JNFPVU
    ͷͭΛೖΕ͍ͯΔ
12. 12.

    ©2018 Wantedly, Inc. 
    Ͳ͏͍ͬͨৼΔ෣͍Λ͢΂͖͔ https://engineering.linkedin.com/blog/2018/05/linkedout--a-request-level-failure-injection-framework -JOLFEJOͷ'BJMVSF
    *OKFDUJPO
    'SBNFXPSL
    Ͱ͸
    w &SSPS
    w %FMBZ
    

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    ߋʹɺͦ͏͍ͬͨৼΔ෣͍͸ϥϯμϜʹى͖ΔΑ͏ʹ͍ͨ͠
    
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    5JNF͕/ͰׂΓ੾ΕΔͱ͖ΞϗʹͳΔΑ͏ʹ͢Ε͹ྑ͛͞
13. 13.

    ©2018 Wantedly, Inc. 
    Ͳ͏͍ͬͨৼΔ෣͍Λ͢΂͖͔ { "interval": 1, "slow_response_option": { "enable":

    true, "time": 5 }, "server_error_option": { "enable": true } }
14. 14.

    ©2018 Wantedly, Inc. ͦ͏͍ͬͨύοέʔδΛ࡞੒ͨ͠ https://github.com/rerost/unstable

15. 15.

    ©2018 Wantedly, Inc. package main import ( "fmt" "net/http" "github.com/rerost/unstable/uhttp"

    ) func main() { http.Handle("/", uhttp.WithUnstable(handler)) if err := http.ListenAndServe(":3000", nil); err != nil { fmt.Println(err) } } func handler(w http.ResponseWriter, r *http.Request) { w.Write([]byte("Sample")) }
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    ©2018 Wantedly, Inc. package main import ( "context" "log" "net"

    "github.com/golang/protobuf/ptypes/empty" api_pb "github.com/rerost/unstable/example/grpc/server/api" "github.com/rerost/unstable/ugrpc" "google.golang.org/grpc" "google.golang.org/grpc/reflection" ) type server struct{} func (s *server) GetSample(ctx context.Context, req *empty.Empty) (*api_pb.GetSampleResponse, error) { return &api_pb.GetSampleResponse{Message: "Sample"}, nil } func main() { l, err := net.Listen("tcp", ":5000") if err != nil { log.Fatalf("Failed to listen: %v", err) } s := grpc.NewServer( grpc.UnaryInterceptor(ugrpc.UnstableUnaryServerInterceptor()), ) api_pb.RegisterSampleServiceServer(s, &server{}) reflection.Register(s) if err := s.Serve(l); err != nil { log.Fatalf("Failed to serve: %v", err) } }
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    ©2018 Wantedly, Inc. Demo

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    ©2018 Wantedly, Inc.  γϡοͱ'BVMU
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    ͱ͔͸૝ఆ͍ͯ͠ͳ͍