[VOL-4442] grpc streaming connection monitoring
Change-Id: I435a03fdc0ac2b549dc4512220148cb19c16db19
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..c9ef619
--- /dev/null
+++ b/vendor/github.com/jhump/protoreflect/grpcreflect/server.go
@@ -0,0 +1,61 @@
+package grpcreflect
+
+import (
+ "fmt"
+
+ "google.golang.org/grpc"
+
+ "github.com/jhump/protoreflect/desc"
+)
+
+// LoadServiceDescriptors loads the service descriptors for all services exposed by the
+// given GRPC server.
+func LoadServiceDescriptors(s *grpc.Server) (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
+}