Adding SSL to grpc connections for agents and collectors. (using collector client 2.0.1 for collectors)

Author: c3s4rfred

backend/pom.xml

@@ -326,7 +326,7 @@
         <dependency>
             <groupId>com.utmstack.grpc.jclient</groupId>
             <artifactId>collector-client-4j</artifactId>
-            <version>1.2.5</version>
+            <version>2.0.1</version>
         </dependency>
 
         <!-- WebSocket dependency -->

backend/src/main/java/com/park/utmstack/config/GrpcConfiguration.java

@@ -2,12 +2,15 @@
 
 import com.park.utmstack.security.GrpcInterceptor;
 import io.grpc.ManagedChannel;
-import io.grpc.ManagedChannelBuilder;
+import io.grpc.netty.GrpcSslContexts;
+import io.grpc.netty.NettyChannelBuilder;
+import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 import javax.annotation.PreDestroy;
+import javax.net.ssl.SSLException;
 
 @Configuration
 public class GrpcConfiguration {
@@ -20,11 +23,10 @@ public class GrpcConfiguration {
     private Integer serverPort;
 
     @Bean
-    public ManagedChannel managedChannel() {
-        this.channel = ManagedChannelBuilder.forAddress(serverAddress, serverPort)
+    public ManagedChannel managedChannel() throws SSLException {
+        this.channel = NettyChannelBuilder.forAddress(serverAddress, serverPort)
             .intercept(new GrpcInterceptor())
-            .usePlaintext()
-            .enableRetry()
+            .sslContext(GrpcSslContexts.forClient().trustManager(InsecureTrustManagerFactory.INSTANCE).build())
             .build();
         return this.channel;
     }