feat: Add cadence-caller-type to client header (#1045)

Signed-off-by: fimanishi <[email protected]>

Author: fimanishi

src/main/java/com/uber/cadence/internal/compatibility/proto/serviceclient/GrpcServiceStubs.java

@@ -62,6 +62,8 @@ final class GrpcServiceStubs implements IGrpcServiceStubs {
       Metadata.Key.of("cadence-client-feature-version", Metadata.ASCII_STRING_MARSHALLER);
   private static final Metadata.Key<String> CLIENT_IMPL_HEADER_KEY =
       Metadata.Key.of("cadence-client-name", Metadata.ASCII_STRING_MARSHALLER);
+  private static final Metadata.Key<String> CALLER_TYPE_HEADER_KEY =
+      Metadata.Key.of("cadence-caller-type", Metadata.ASCII_STRING_MARSHALLER);
   private static final Metadata.Key<String> ISOLATION_GROUP_HEADER_KEY =
       Metadata.Key.of("cadence-client-isolation-group", Metadata.ASCII_STRING_MARSHALLER);
   private static final Metadata.Key<String> RPC_SERVICE_NAME_HEADER_KEY =
@@ -75,6 +77,7 @@ final class GrpcServiceStubs implements IGrpcServiceStubs {
       Metadata.Key.of("cadence-authorization", Metadata.ASCII_STRING_MARSHALLER);
 
   private static final String CLIENT_IMPL_HEADER_VALUE = "uber-java";
+  private static final String CALLER_TYPE_HEADER_VALUE = "sdk";
 
   private final ClientOptions options;
   private final ManagedChannel channel;
@@ -110,6 +113,7 @@ final class GrpcServiceStubs implements IGrpcServiceStubs {
     headers.put(LIBRARY_VERSION_HEADER_KEY, Version.LIBRARY_VERSION);
     headers.put(FEATURE_VERSION_HEADER_KEY, Version.FEATURE_VERSION);
     headers.put(CLIENT_IMPL_HEADER_KEY, CLIENT_IMPL_HEADER_VALUE);
+    headers.put(CALLER_TYPE_HEADER_KEY, CALLER_TYPE_HEADER_VALUE);
     headers.put(RPC_SERVICE_NAME_HEADER_KEY, options.getServiceName());
     headers.put(RPC_CALLER_NAME_HEADER_KEY, options.getClientAppName());
     headers.put(RPC_ENCODING_HEADER_KEY, "proto");