feat: Make A2AClient agnostic to the transport protocol

Author: brasseld

client/pom.xml

@@ -29,7 +29,7 @@
         </dependency>
         <dependency>
             <groupId>${project.groupId}</groupId>
-            <artifactId>a2a-java-sdk-spec-grpc</artifactId>
+            <artifactId>a2a-java-sdk-transport-jsonrpc</artifactId>
             <version>${project.version}</version>
         </dependency>
 

client/src/main/java/io/a2a/A2A.java

@@ -4,8 +4,8 @@
 import java.util.Map;
 
 import io.a2a.client.A2ACardResolver;
-import io.a2a.http.A2AHttpClient;
-import io.a2a.http.JdkA2AHttpClient;
+import io.a2a.transport.jsonrpc.client.A2AHttpClient;
+import io.a2a.transport.jsonrpc.client.JdkA2AHttpClient;
 import io.a2a.spec.A2AClientError;
 import io.a2a.spec.A2AClientJSONError;
 import io.a2a.spec.AgentCard;

client/src/main/java/io/a2a/client/A2ACardResolver.java

@@ -9,8 +9,8 @@
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.core.type.TypeReference;
-import io.a2a.http.A2AHttpClient;
-import io.a2a.http.A2AHttpResponse;
+import io.a2a.transport.jsonrpc.client.A2AHttpClient;
+import io.a2a.transport.jsonrpc.client.A2AHttpResponse;
 import io.a2a.spec.A2AClientError;
 import io.a2a.spec.A2AClientJSONError;
 import io.a2a.spec.AgentCard;

client/src/main/java/io/a2a/client/A2AClient.java

@@ -11,8 +11,8 @@
 import java.util.function.Consumer;
 
 import com.fasterxml.jackson.core.type.TypeReference;
-import io.a2a.http.A2AHttpClient;
-import io.a2a.http.A2AHttpResponse;
+import io.a2a.transport.jsonrpc.client.A2AHttpClient;
+import io.a2a.transport.jsonrpc.client.A2AHttpResponse;
 import io.a2a.spec.A2AClientError;
 import io.a2a.spec.A2AClientJSONError;
 import io.a2a.spec.AgentCard;

client/src/main/java/io/a2a/client/A2AGrpcClient.java

@@ -290,6 +290,7 @@
         <module>spec-grpc</module>
         <module>tck</module>
         <module>tests/server-common</module>
+        <module>transport/spi</module>
         <module>transport/jsonrpc</module>
         <module>transport/grpc</module>
     </modules>

client/src/test/java/io/a2a/client/A2ACardResolverTest.java

@@ -3,7 +3,7 @@
 import jakarta.enterprise.inject.Instance;
 import jakarta.inject.Inject;
 
-import io.a2a.grpc.handler.GrpcHandler;
+import io.a2a.transport.grpc.server.handler.GrpcHandler;
 import io.a2a.server.PublicAgentCard;
 import io.a2a.server.requesthandlers.CallContextFactory;
 import io.a2a.server.requesthandlers.RequestHandler;

pom.xml

@@ -19,7 +19,7 @@
 import jakarta.ws.rs.core.Response;
 
 import io.a2a.server.apps.common.TestUtilsBean;
-import io.a2a.grpc.handler.GrpcHandler;
+import io.a2a.transport.grpc.server.handler.GrpcHandler;
 import io.a2a.spec.PushNotificationConfig;
 import io.a2a.spec.Task;
 import io.a2a.spec.TaskArtifactUpdateEvent;

reference/grpc/src/main/java/io/a2a/server/grpc/quarkus/QuarkusGrpcHandler.java

@@ -20,7 +20,7 @@
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.core.io.JsonEOFException;
 import com.fasterxml.jackson.databind.JsonNode;
-import io.a2a.jsonrpc.handler.JSONRPCHandler;
+import io.a2a.transport.jsonrpc.server.handler.JSONRPCHandler;
 import io.a2a.server.ExtendedAgentCard;
 import io.a2a.server.ServerCallContext;
 import io.a2a.server.auth.UnauthenticatedUser;