Add a hook for the default constructor of ClientContext.

1 files changed, 10 insertions, 0 deletions

diff --git a/include/grpc++/client_context.h b/include/grpc++/client_context.h
index 1b6769dee1..d3f23fe047 100644
--- a/include/grpc++/client_context.h
+++ b/include/grpc++/client_context.h
@@ -280,6 +280,16 @@ class ClientContext {
   /// There is no guarantee the call will be cancelled.
   void TryCancel();
 
+  /// Global Callbacks
+  ///
+  /// Can be set exactly once per application to install hooks whenever
+  /// a client context is constructed.
+  class GlobalCallbacks {
+   public:
+    virtual void DefaultConstructor(ClientContext* context) = 0;
+  };
+  static void SetGlobalCallbacks(GlobalCallbacks* callbacks);
+
  private:
   // Disallow copy and assign.
   ClientContext(const ClientContext&);