1 files changed, 67 insertions, 0 deletions
diff --git a/vendor/github.com/jhump/protoreflect/grpcreflect/server.go b/vendor/github.com/jhump/protoreflect/grpcreflect/server.go
new file mode 100644
index 0000000..7ff1912
--- /dev/null
+++ b/vendor/github.com/jhump/protoreflect/grpcreflect/server.go
@@ -0,0 +1,67 @@
+package grpcreflect
+
+import (
+	"fmt"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
+
+	"github.com/jhump/protoreflect/desc"
+)
+
+// GRPCServer is the interface provided by a gRPC server. In addition to being a
+// service registrar (for registering services and handlers), it also has an
+// accessor for retrieving metadata about all registered services.
+type GRPCServer = reflection.GRPCServer
+
+// LoadServiceDescriptors loads the service descriptors for all services exposed by the
+// given GRPC server.
+func LoadServiceDescriptors(s GRPCServer) (map[string]*desc.ServiceDescriptor, error) {
+	descs := map[string]*desc.ServiceDescriptor{}
+	for name, info := range s.GetServiceInfo() {
+		file, ok := info.Metadata.(string)
+		if !ok {
+			return nil, fmt.Errorf("service %q has unexpected metadata: expecting a string; got %v", name, info.Metadata)
+		}
+		fd, err := desc.LoadFileDescriptor(file)
+		if err != nil {
+			return nil, err
+		}
+		d := fd.FindSymbol(name)
+		if d == nil {
+			return nil, fmt.Errorf("file descriptor for %q has no element named %q", file, name)
+		}
+		sd, ok := d.(*desc.ServiceDescriptor)
+		if !ok {
+			return nil, fmt.Errorf("file descriptor for %q has incorrect element named %q: expecting a service descriptor; got %v", file, name, d)
+		}
+		descs[name] = sd
+	}
+	return descs, nil
+}
+
+// LoadServiceDescriptor loads a rich descriptor for a given service description
+// generated by protoc-gen-go. Generated code contains an unexported symbol with
+// a name like "_<Service>_serviceDesc" which is the service's description. It
+// is used internally to register a service implementation with a GRPC server.
+// But it can also be used by this package to retrieve the rich descriptor for
+// the service.
+func LoadServiceDescriptor(svc *grpc.ServiceDesc) (*desc.ServiceDescriptor, error) {
+	file, ok := svc.Metadata.(string)
+	if !ok {
+		return nil, fmt.Errorf("service %q has unexpected metadata: expecting a string; got %v", svc.ServiceName, svc.Metadata)
+	}
+	fd, err := desc.LoadFileDescriptor(file)
+	if err != nil {
+		return nil, err
+	}
+	d := fd.FindSymbol(svc.ServiceName)
+	if d == nil {
+		return nil, fmt.Errorf("file descriptor for %q has no element named %q", file, svc.ServiceName)
+	}
+	sd, ok := d.(*desc.ServiceDescriptor)
+	if !ok {
+		return nil, fmt.Errorf("file descriptor for %q has incorrect element named %q: expecting a service descriptor; got %v", file, svc.ServiceName, d)
+	}
+	return sd, nil
+}