From b087b173e89b8d1f177e46b56b22259557fac0a6 Mon Sep 17 00:00:00 2001
From: silag <silaghialexmihail@gmail.com>
Date: Tue, 12 Mar 2024 10:02:59 +0200
Subject: [PATCH] changed to topic exchange

---
 .../webprotege/ipc/ExecutionContext.java      | 10 +++++++-
 .../ipc/impl/RabbitMqConfiguration.java       | 23 ++++++++++---------
 2 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/src/main/java/edu/stanford/protege/webprotege/ipc/ExecutionContext.java b/src/main/java/edu/stanford/protege/webprotege/ipc/ExecutionContext.java
index 39e1995..ad77672 100644
--- a/src/main/java/edu/stanford/protege/webprotege/ipc/ExecutionContext.java
+++ b/src/main/java/edu/stanford/protege/webprotege/ipc/ExecutionContext.java
@@ -2,14 +2,22 @@
 
 import edu.stanford.protege.webprotege.common.UserId;
 
+import javax.annotation.Nonnull;
+import java.util.Objects;
+
 /**
  * Matthew Horridge
  * Stanford Center for Biomedical Informatics Research
  * 2021-08-19
  */
-public record ExecutionContext(UserId userId, String jwt) {
+public record ExecutionContext(@Nonnull UserId userId, @Nonnull  String jwt) {
 
     public ExecutionContext() {
         this(UserId.getGuest(), "");
     }
+
+    public ExecutionContext {
+        Objects.requireNonNull(userId, "userId cannot be null");
+        Objects.requireNonNull(jwt, "jwt cannot be null");
+    }
 }
diff --git a/src/main/java/edu/stanford/protege/webprotege/ipc/impl/RabbitMqConfiguration.java b/src/main/java/edu/stanford/protege/webprotege/ipc/impl/RabbitMqConfiguration.java
index 8cb16f3..dc3f668 100644
--- a/src/main/java/edu/stanford/protege/webprotege/ipc/impl/RabbitMqConfiguration.java
+++ b/src/main/java/edu/stanford/protege/webprotege/ipc/impl/RabbitMqConfiguration.java
@@ -77,8 +77,8 @@ public Queue eventsQueue() {
     }
 
     @Bean
-    DirectExchange exchange() {
-        return new DirectExchange(COMMANDS_EXCHANGE, true, false);
+    TopicExchange exchange() {
+        return new TopicExchange(COMMANDS_EXCHANGE, true, false);
     }
 
     @Bean
@@ -135,31 +135,32 @@ public SimpleMessageListenerContainer messageListenerContainers(ConnectionFactor
     }
 
     @Bean
-    public List<Binding> bindings(DirectExchange directExchange, Queue msgQueue, Queue replyQueue) {
+    public List<Binding> bindings(TopicExchange topicExchange, Queue msgQueue, Queue replyQueue) {
+
+        var response = new ArrayList<Binding>();
         try (Connection connection = connectionFactory.createConnection();
              Channel channel = connection.createChannel(true)) {
-            channel.exchangeDeclare(COMMANDS_EXCHANGE, "direct", true);
+            channel.exchangeDeclare(COMMANDS_EXCHANGE, "topic", true);
             channel.queueDeclare(COMMANDS_QUEUE, true, false, false, null);
             channel.queueDeclare(COMMANDS_RESPONSE_QUEUE, true, false, false, null);
-
-            var response = new ArrayList<Binding>();
+            channel.basicQos(1);
 
             for (CommandHandler handler : commandHandlers) {
                 logger.info("Declaring binding queue {} to exchange {} with key {}", COMMANDS_QUEUE, COMMANDS_EXCHANGE, handler.getChannelName());
                 channel.queueBind(COMMANDS_QUEUE, COMMANDS_EXCHANGE, handler.getChannelName());
-                response.add(BindingBuilder.bind(msgQueue).to(directExchange).with(handler.getChannelName()));
+                response.add(BindingBuilder.bind(msgQueue).to(topicExchange).with(handler.getChannelName()));
             }
             channel.queueBind(COMMANDS_RESPONSE_QUEUE, COMMANDS_EXCHANGE, COMMANDS_RESPONSE_QUEUE);
 
-            response.add(BindingBuilder.bind(replyQueue).to(directExchange).with(replyQueue.getName()));
+            response.add(BindingBuilder.bind(replyQueue).to(topicExchange).with(replyQueue.getName()));
             channel.close();
             connection.close();
             return response;
 
         } catch (Exception e) {
-            logger.error("Error ", e);
-            throw new RuntimeException(e);
+            logger.error("Error initialize bindings", e);
         }
+        return response;
     }
 
     @Bean
@@ -176,7 +177,7 @@ public List<Binding> eventsBindings(FanoutExchange fanoutExchange, Queue eventsQ
                 response.add(BindingBuilder.bind(eventsQueue).to(fanoutExchange));
             }
         } catch (IOException | TimeoutException e) {
-            throw new RuntimeException(e);
+            logger.error("Error initialize bindings", e);
         }