Add vendor folder to git

vendor/github.com/grpc-ecosystem/grpc-gateway/examples/main.go

@@ -0,0 +1,110 @@
+package main
+
+import (
+	"flag"
+	"net/http"
+	"path"
+	"strings"
+
+	"github.com/golang/glog"
+	"github.com/grpc-ecosystem/grpc-gateway/examples/examplepb"
+	"github.com/grpc-ecosystem/grpc-gateway/runtime"
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+)
+
+var (
+	echoEndpoint = flag.String("echo_endpoint", "localhost:9090", "endpoint of EchoService")
+	abeEndpoint  = flag.String("more_endpoint", "localhost:9090", "endpoint of ABitOfEverythingService")
+	flowEndpoint = flag.String("flow_endpoint", "localhost:9090", "endpoint of FlowCombination")
+
+	swaggerDir = flag.String("swagger_dir", "examples/examplepb", "path to the directory which contains swagger definitions")
+)
+
+// newGateway returns a new gateway server which translates HTTP into gRPC.
+func newGateway(ctx context.Context, opts ...runtime.ServeMuxOption) (http.Handler, error) {
+	mux := runtime.NewServeMux(opts...)
+	dialOpts := []grpc.DialOption{grpc.WithInsecure()}
+	err := examplepb.RegisterEchoServiceHandlerFromEndpoint(ctx, mux, *echoEndpoint, dialOpts)
+	if err != nil {
+		return nil, err
+	}
+	err = examplepb.RegisterStreamServiceHandlerFromEndpoint(ctx, mux, *abeEndpoint, dialOpts)
+	if err != nil {
+		return nil, err
+	}
+	err = examplepb.RegisterABitOfEverythingServiceHandlerFromEndpoint(ctx, mux, *abeEndpoint, dialOpts)
+	if err != nil {
+		return nil, err
+	}
+	err = examplepb.RegisterFlowCombinationHandlerFromEndpoint(ctx, mux, *flowEndpoint, dialOpts)
+	if err != nil {
+		return nil, err
+	}
+	return mux, nil
+}
+
+func serveSwagger(w http.ResponseWriter, r *http.Request) {
+	if !strings.HasSuffix(r.URL.Path, ".swagger.json") {
+		glog.Errorf("Not Found: %s", r.URL.Path)
+		http.NotFound(w, r)
+		return
+	}
+
+	glog.Infof("Serving %s", r.URL.Path)
+	p := strings.TrimPrefix(r.URL.Path, "/swagger/")
+	p = path.Join(*swaggerDir, p)
+	http.ServeFile(w, r, p)
+}
+
+// allowCORS allows Cross Origin Resoruce Sharing from any origin.
+// Don't do this without consideration in production systems.
+func allowCORS(h http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if origin := r.Header.Get("Origin"); origin != "" {
+			w.Header().Set("Access-Control-Allow-Origin", origin)
+			if r.Method == "OPTIONS" && r.Header.Get("Access-Control-Request-Method") != "" {
+				preflightHandler(w, r)
+				return
+			}
+		}
+		h.ServeHTTP(w, r)
+	})
+}
+
+func preflightHandler(w http.ResponseWriter, r *http.Request) {
+	headers := []string{"Content-Type", "Accept"}
+	w.Header().Set("Access-Control-Allow-Headers", strings.Join(headers, ","))
+	methods := []string{"GET", "HEAD", "POST", "PUT", "DELETE"}
+	w.Header().Set("Access-Control-Allow-Methods", strings.Join(methods, ","))
+	glog.Infof("preflight request for %s", r.URL.Path)
+	return
+}
+
+// Run starts a HTTP server and blocks forever if successful.
+func Run(address string, opts ...runtime.ServeMuxOption) error {
+	ctx := context.Background()
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	mux := http.NewServeMux()
+	mux.HandleFunc("/swagger/", serveSwagger)
+
+	gw, err := newGateway(ctx, opts...)
+	if err != nil {
+		return err
+	}
+	mux.Handle("/", gw)
+
+	http.ListenAndServe(address, allowCORS(mux))
+	return nil
+}
+
+func main() {
+	flag.Parse()
+	defer glog.Flush()
+
+	if err := Run(":8080"); err != nil {
+		glog.Fatal(err)
+	}
+}