Moved to google.golang.org/genproto/googleapis/api/annotations

Fixes #52

vendor/github.com/go-kit/kit/circuitbreaker/gobreaker.go

@@ -0,0 +1,22 @@
+package circuitbreaker
+
+import (
+	"context"
+
+	"github.com/sony/gobreaker"
+
+	"github.com/go-kit/kit/endpoint"
+)
+
+// Gobreaker returns an endpoint.Middleware that implements the circuit
+// breaker pattern using the sony/gobreaker package. Only errors returned by
+// the wrapped endpoint count against the circuit breaker's error count.
+//
+// See http://godoc.org/github.com/sony/gobreaker for more information.
+func Gobreaker(cb *gobreaker.CircuitBreaker) endpoint.Middleware {
+	return func(next endpoint.Endpoint) endpoint.Endpoint {
+		return func(ctx context.Context, request interface{}) (interface{}, error) {
+			return cb.Execute(func() (interface{}, error) { return next(ctx, request) })
+		}
+	}
+}