Circuit breaker middleware

middlewares/cbreaker.go

@@ -0,0 +1,21 @@
+/*
+Copyright
+*/
+package middlewares
+import (
+	"net/http"
+	"github.com/mailgun/oxy/cbreaker"
+)
+
+type CircuitBreaker struct {
+	circuitBreaker *cbreaker.CircuitBreaker
+}
+
+func NewCircuitBreaker(next http.Handler, options ...cbreaker.CircuitBreakerOption) *CircuitBreaker {
+	circuitBreaker, _ := cbreaker.New(next, "NetworkErrorRatio() > 0.5", options...)
+	return &CircuitBreaker{circuitBreaker}
+}
+
+func (cb *CircuitBreaker) ServeHTTP(rw http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
+	cb.circuitBreaker.ServeHTTP(rw, r)
+}