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限流&熔断

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hb-chen committed Oct 13, 2019
1 parent 2f0baa1 commit 11453df1566721c1b8aa50d253e3454986aa2c4f
Showing with 47 additions and 2 deletions.
  1. +37 −0 example/api/main.go
  2. +2 −2 example/srv/handler/example.go
  3. +1 −0 go.mod
  4. +7 −0 go.sum
@@ -1,6 +1,7 @@
package main

import (
"context"
"net"
"net/http"
"time"
@@ -16,6 +17,9 @@ import (
"github.com/micro/go-plugins/wrapper/monitoring/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"

"github.com/afex/hystrix-go/hystrix"
"github.com/micro/go-plugins/wrapper/ratelimiter/uber"

example "github.com/hb-go/micro-quick-start/example/api/proto/example"
)

@@ -73,6 +77,13 @@ func main() {
},
)

// 限流&熔断
service.Init(
micro.WrapClient(ratelimit.NewClientWrapper(10)),
micro.WrapHandler(ratelimit.NewHandlerWrapper(10)),
micro.WrapClient(NewClientWrapper()),
)

// Register Handler
example.RegisterExampleHandler(
service.Server(),
@@ -93,3 +104,29 @@ func main() {
log.Fatal(err)
}
}

type clientWrapper struct {
mc.Client
}

func (c *clientWrapper) Call(ctx context.Context, req mc.Request, rsp interface{}, opts ...mc.CallOption) error {
return hystrix.Do(req.Service()+"."+req.Endpoint(), func() error {
if cir, ok, _ := hystrix.GetCircuit(req.Service() + "." + req.Endpoint()); ok {
log.Logf("circuit: %v %v", cir.Name, cir.AllowRequest())
} else {
log.Logf("circuit: %v %v", cir.Name, cir.AllowRequest())
}

return c.Client.Call(ctx, req, rsp, opts...)
}, func(err error) error {
log.Logf("fallback: %v", err)
return err
})
}

// NewClientWrapper returns a hystrix client Wrapper.
func NewClientWrapper() mc.Wrapper {
return func(c mc.Client) mc.Client {
return &clientWrapper{c}
}
}
@@ -18,15 +18,15 @@ var count int
func (e *Example) Call(ctx context.Context, req *example.Request, rsp *example.Response) error {
log.Log("Received Example.Call request")
count++
log.Log("Received Example.Call request, count: %v", count)
log.Logf("Received Example.Call request, count: %d", count)

if count%4 == 0 {
log.Log("Received Example.Call request 错误")
return errors.New("go.micro.srv.example.call", "错误", 500)
}

log.Log("Received Example.Call request 超时")
time.Sleep(time.Millisecond * 100)
time.Sleep(time.Millisecond * 10)

rsp.Msg = "Hello " + req.Name + " v1 value1"
return nil
1 go.mod
@@ -3,6 +3,7 @@ module github.com/hb-go/micro-quick-start
go 1.12

require (
github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5
github.com/golang/protobuf v1.3.2
github.com/micro/go-micro v1.11.3
github.com/micro/go-plugins v1.3.0
7 go.sum
@@ -58,6 +58,7 @@ github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWX
github.com/Shopify/sarama v1.23.1/go.mod h1:XLH1GYJnLVE0XCr6KdJGVJRTwY30moWNJ4sERjXX6fs=
github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
github.com/abbot/go-http-auth v0.4.1-0.20181019201920-860ed7f246ff/go.mod h1:Cz6ARTIzApMJDzh5bRMSUou6UMSp0IEXg9km/ci7TJM=
github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5 h1:rFw4nCn9iMW+Vajsk51NtYIcwSTkXr+JGrMd36kTDJw=
github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7/go.mod h1:6zEj6s6u/ghQa61ZWa/C2Aw3RkjiTBOix7dkqa1VLIs=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
@@ -232,6 +233,7 @@ github.com/googleapis/gnostic v0.0.0-20170729233727-0c5108395e2d/go.mod h1:sJBsC
github.com/googleapis/gnostic v0.3.0/go.mod h1:sJBsCZ4ayReDTBIg8b9dl28c5xFWyhBTVRp3pOg5EKY=
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c h1:7lF+Vz0LqiRidnzC1Oq86fpX1q/iEv2KJdrCtttYjT4=
github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
github.com/gorilla/handlers v1.4.1/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
@@ -320,6 +322,7 @@ github.com/json-iterator/go v1.1.7 h1:KfgG9LzI+pYjr4xvmz/5H4FXjokeP+rlHLhv3iH62F
github.com/json-iterator/go v1.1.7/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
github.com/jtolds/gls v4.2.1+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
github.com/juju/ratelimit v1.0.1/go.mod h1:qapgC/Gy+xNh9UxzV13HGGl/6UXNN+ct+vwSgWNm/qk=
github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
@@ -499,9 +502,11 @@ github.com/sirupsen/logrus v1.3.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPx
github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=
github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
github.com/smartystreets/assertions v1.0.1 h1:voD4ITNjPL5jjBfgR/r8fPIIBrliWrWHeiJApdr3r4w=
github.com/smartystreets/assertions v1.0.1/go.mod h1:kHHU4qYBaI3q23Pp3VPrmWhuIUrLW/7eUrw0BU5VaoM=
github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c/go.mod h1:XDJAKZRPZ1CvBcN2aX5YOUTYGHki24fSF0Iv48Ibg0s=
github.com/smartystreets/goconvey v0.0.0-20190306220146-200a235640ff/go.mod h1:KSQcGKpxUMHk3nbYzs/tIBAM2iDooCn0BmttHOJEbLs=
github.com/smartystreets/goconvey v0.0.0-20190710185942-9d28bd7c0945 h1:N8Bg45zpk/UcpNGnfJt2y/3lRWASHNTUET8owPYCgYI=
github.com/smartystreets/goconvey v0.0.0-20190710185942-9d28bd7c0945/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4kGIyLM=
github.com/sony/gobreaker v0.4.1/go.mod h1:ZKptC7FHNvhBz7dN2LGjPVBz2sZJmc0/PkyDJOjmxWY=
@@ -550,8 +555,10 @@ go.opencensus.io v0.20.2/go.mod h1:6WKK9ahsWS3RSO+PY9ZHZUfv2irvY6gN279GOPZjmmk=
go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
go.uber.org/atomic v1.4.0 h1:cxzIVoETapQEqDhQu3QfnvXAV4AlzcvUCxkVUFw3+EU=
go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
go.uber.org/ratelimit v0.1.0 h1:U2AruXqeTb4Eh9sYQSTrMhH8Cb7M0Ian2ibBOnBcnAw=
go.uber.org/ratelimit v0.1.0/go.mod h1:2X8KaoNd1J0lZV+PxJk/5+DGbO/tpwLR1m++a7FnB/Y=
go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
gocloud.dev v0.15.0/go.mod h1:ShXCyJaGrJu9y/7a6+DSCyBb9MFGZ1P5wwPa0Wu6w34=

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