Create MyGrpcServer class to implement proto file

registration-discovery-leader-reelection-cordinator-workers/src/main/java/Registration_Discovery/MyGrpcServer.java

+package Registration_Discovery;
+
+import io.grpc.stub.StreamObserver;
+import org.lognet.springboot.grpc.GRpcService;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import java.io.IOException;
+import java.util.*;
+
+@GRpcService
+public class MyGrpcServer extends Registration_Discovery.SearchServiceGrpc.SearchServiceImplBase {
+
+    @Override
+    public void search(Registration_Discovery.SearchRequest request, StreamObserver<Registration_Discovery.SearchResponse> responseObserver) {
+        String searchQuery = request.getQuery();
+        TreeMap<String,Double> documentsScores = new TreeMap<>();
+        try {
+            documentsScores = Leader.start(searchQuery);
+        } catch (IOException | InterruptedException e)
+        {
+            System.out.println("problem in getting Results !!");
+            throw new RuntimeException(e);
+        }
+
+        Registration_Discovery.SearchResult searchResult = Registration_Discovery.SearchResult.newBuilder()
+                .putAllResults(documentsScores)
+                .build();
+        Registration_Discovery.SearchResponse response = Registration_Discovery.SearchResponse.newBuilder()
+                .setSearchResult(searchResult)
+                .build();
+        responseObserver.onNext(response);
+        responseObserver.onCompleted();
+    }
+}