From ba3527a926a99433be012a681012628294dc6105 Mon Sep 17 00:00:00 2001
From: Francisco Javier Tirado Sarti <ftirados@redhat.com>
Date: Tue, 5 Mar 2024 18:03:37 +0100
Subject: [PATCH] [Fix apache/incubator-kie-issues#987] Add onError listener

---
 .../org/kie/api/event/process/ErrorEvent.java | 33 +++++++++++++++++++
 .../event/process/ProcessEventListener.java   |  6 ++++
 2 files changed, 39 insertions(+)
 create mode 100644 kie-api/src/main/java/org/kie/api/event/process/ErrorEvent.java

diff --git a/kie-api/src/main/java/org/kie/api/event/process/ErrorEvent.java b/kie-api/src/main/java/org/kie/api/event/process/ErrorEvent.java
new file mode 100644
index 00000000000..af2cc4e0568
--- /dev/null
+++ b/kie-api/src/main/java/org/kie/api/event/process/ErrorEvent.java
@@ -0,0 +1,33 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.kie.api.event.process;
+
+import org.kie.api.runtime.process.NodeInstance;
+
+/**
+ * An event when a error is thrown
+ */
+public interface ErrorEvent extends ProcessNodeEvent {
+    /**
+     * Error associated to the event
+     *
+     * @return exception
+     */
+    Exception getException();
+}
diff --git a/kie-api/src/main/java/org/kie/api/event/process/ProcessEventListener.java b/kie-api/src/main/java/org/kie/api/event/process/ProcessEventListener.java
index 4f27158b6b1..085f7a34a3b 100644
--- a/kie-api/src/main/java/org/kie/api/event/process/ProcessEventListener.java
+++ b/kie-api/src/main/java/org/kie/api/event/process/ProcessEventListener.java
@@ -116,4 +116,10 @@ default void onSignal(SignalEvent event) {}
      * @param event
      */
     default void onMessage(MessageEvent event) {}
+    
+    /**
+     * This listener method is invoked when an error is captured
+     * @param event
+     */
+    default void onError (ErrorEvent event) {}
 }