49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
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package maxconnection
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import (
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"context"
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"fmt"
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"net/http"
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"github.com/containous/traefik/config"
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"github.com/containous/traefik/middlewares"
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"github.com/containous/traefik/tracing"
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"github.com/opentracing/opentracing-go/ext"
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"github.com/vulcand/oxy/connlimit"
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"github.com/vulcand/oxy/utils"
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)
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const (
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typeName = "MaxConnection"
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)
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type maxConnection struct {
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handler http.Handler
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name string
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}
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// New creates a max connection middleware.
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func New(ctx context.Context, next http.Handler, maxConns config.MaxConn, name string) (http.Handler, error) {
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middlewares.GetLogger(ctx, name, typeName).Debug("Creating middleware")
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extractFunc, err := utils.NewExtractor(maxConns.ExtractorFunc)
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if err != nil {
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return nil, fmt.Errorf("error creating connection limit: %v", err)
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}
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handler, err := connlimit.New(next, extractFunc, maxConns.Amount)
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if err != nil {
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return nil, fmt.Errorf("error creating connection limit: %v", err)
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}
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return &maxConnection{handler: handler, name: name}, nil
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}
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func (mc *maxConnection) GetTracingInformation() (string, ext.SpanKindEnum) {
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return mc.name, tracing.SpanKindNoneEnum
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}
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func (mc *maxConnection) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
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mc.handler.ServeHTTP(rw, req)
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}
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