Convert the Tour to new API and general improvements

code_snippets/java/build.gradle.kts

@@ -31,6 +31,17 @@ java {
   }
 }
 
+tasks.withType<JavaCompile> {
+  // Using -parameters allows to use Jackson ParameterName feature
+  // https://github.com/FasterXML/jackson-modules-java8/tree/2.14/parameter-names
+  options.compilerArgs.add("-parameters")
+}
+
+// Configure test platform
+tasks.withType<Test> {
+  useJUnitPlatform()
+}
+
 // Set main class
 application {
   mainClass.set("develop.Greeter")

code_snippets/java/src/main/java/get_started/CheckoutRequest.java

@@ -0,0 +1,32 @@
+package get_started;
+
+import java.util.Set;
+
+public class CheckoutRequest {
+    private String userId;
+    private Set<String> tickets;
+
+    public CheckoutRequest() {
+    }
+
+    public CheckoutRequest(String userId, Set<String> tickets) {
+        this.userId = userId;
+        this.tickets = tickets;
+    }
+
+    public String getUserId() {
+        return userId;
+    }
+
+    public void setUserId(String userId) {
+        this.userId = userId;
+    }
+
+    public Set<String> getTickets() {
+        return tickets;
+    }
+
+    public void setTickets(Set<String> tickets) {
+        this.tickets = tickets;
+    }
+}

code_snippets/java/src/main/java/get_started/TicketObject.java

@@ -0,0 +1,15 @@
+package get_started;
+
+import dev.restate.sdk.Context;
+import dev.restate.sdk.ObjectContext;
+import dev.restate.sdk.annotation.Handler;
+import dev.restate.sdk.annotation.Service;
+import dev.restate.sdk.annotation.VirtualObject;
+
+@VirtualObject
+public class TicketObject {
+    @Handler
+    public void unreserve(ObjectContext ctx) {
+        return;
+    }
+}

code_snippets/java/src/main/java/get_started/Tour.java

@@ -1,35 +1,75 @@
-//package develop;
-//
-//import com.google.protobuf.Empty;
-//import dev.restate.sdk.ObjectContext;
-//import static greeter.generated.GreeterProto.*;
-//
-//import static example.generated.ExampleProto.*;
-//import static example.generated.TicketServiceRestate.*;
-//
-//import dev.restate.sdk.common.TerminalException;
-//import example.generated.TicketServiceRestate;
-//import greeter.generated.GreeterRestate;
-//
-//import java.time.Duration;
-//
-//public class Tour extends TicketServiceRestateImplBase {
-//
-//    @Override
-//    public void unreserve(ObjectContext ctx, Ticket request) throws TerminalException {
-//
-//        // <start_sleep_and_send>
-//        ctx.sleep(Duration.ofMinutes(15));
-//        TicketServiceRestateClient ticketClnt = TicketServiceRestate.newClient(ctx);
-//        ticketClnt.oneWay().unreserve(Ticket.newBuilder().setTicketId(request.getTicketId()).build());
-//        // <end_sleep_and_send>
-//
-//        // <start_idempotency_key_retry>
-//        String idempotencyKey = ctx.random().nextUUID().toString();
-//        System.out.println("My idempotency key: " + idempotencyKey);
-//        throw new IllegalStateException("Something went wrong.");
-//        // <end_idempotency_key_retry>
-//    }
-//
-//    private String doDbRequest(){ return ""; }
-//}
+package get_started;
+
+import dev.restate.sdk.Context;
+import dev.restate.sdk.ObjectContext;
+import dev.restate.sdk.annotation.Handler;
+import dev.restate.sdk.annotation.Service;
+import dev.restate.sdk.annotation.VirtualObject;
+import dev.restate.sdk.common.CoreSerdes;
+import dev.restate.sdk.http.vertx.RestateHttpEndpointBuilder;
+
+import java.time.Duration;
+
+@Service
+public class Tour {
+
+   @Handler
+   public void myFn(ObjectContext ctx) {
+       String ticketId = "123";
+
+       // <start_sleep>
+       ctx.sleep(Duration.ofMinutes(15));
+       // <end_sleep>
+
+       // <start_sleep_and_send>
+       ctx.sleep(Duration.ofMinutes(15));
+       TicketObjectClient.fromContext(ctx, ticketId).send().unreserve();
+       // <end_sleep_and_send>
+   }
+
+   // <start_uuid>
+   @Handler
+    public boolean handle(Context ctx, CheckoutRequest request) {
+       // withClass(1,2,4) highlight-line
+       String idempotencyKey = ctx.random().nextUUID().toString();
+       System.out.println("My idempotency key: " + idempotencyKey);
+
+       throw new IllegalStateException("The handler failed");
+    }
+    // <end_uuid>
+
+    public static void main(String[] args) {
+        RestateHttpEndpointBuilder.builder().bind(new Tour()).bind(new TicketObject()).buildAndListen();
+    }
+}
+
+@Service
+class CheckoutService {
+    // <start_checkout>
+    @Handler
+    public boolean handle(Context ctx, CheckoutRequest request) {
+        // withClass highlight-line
+        double totalPrice = request.getTickets().size() * 40.0;
+
+        String idempotencyKey = ctx.random().nextUUID().toString();
+
+        // withClass highlight-line
+        boolean success = ctx.sideEffect(CoreSerdes.JSON_BOOLEAN, () ->
+                PaymentClient.get().call(idempotencyKey, totalPrice));
+
+        return success;
+    }
+    // <end_checkout>
+
+
+}
+
+class PaymentClient {
+
+    public static PaymentClient get() {
+        return new PaymentClient();
+    }
+    public boolean call(String idempotencyKey, double totalPrice) {
+        return true;
+    }
+}