From b92ec9ed53f69638c9726c29bc25a780a8eb7a17 Mon Sep 17 00:00:00 2001
From: Sebastian Lövdahl <slovdahl@hibox.fi>
Date: Tue, 20 Feb 2024 09:16:09 +0200
Subject: Post `PluginState.UNLOADED` event when plugins are unloaded (#567)

---
 pf4j/src/main/java/org/pf4j/AbstractPluginManager.java |  1 +
 pf4j/src/main/java/org/pf4j/PluginState.java           | 11 +++++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

(limited to 'pf4j/src/main')

diff --git a/pf4j/src/main/java/org/pf4j/AbstractPluginManager.java b/pf4j/src/main/java/org/pf4j/AbstractPluginManager.java
index f3a7231..78c261c 100644
--- a/pf4j/src/main/java/org/pf4j/AbstractPluginManager.java
+++ b/pf4j/src/main/java/org/pf4j/AbstractPluginManager.java
@@ -311,6 +311,7 @@ public abstract class AbstractPluginManager implements PluginManager {
         }
 
         // remove the plugin
+        pluginWrapper.setPluginState(PluginState.UNLOADED);
         plugins.remove(pluginId);
         getResolvedPlugins().remove(pluginWrapper);
         getUnresolvedPlugins().remove(pluginWrapper);
diff --git a/pf4j/src/main/java/org/pf4j/PluginState.java b/pf4j/src/main/java/org/pf4j/PluginState.java
index 989157f..6a6c1f9 100644
--- a/pf4j/src/main/java/org/pf4j/PluginState.java
+++ b/pf4j/src/main/java/org/pf4j/PluginState.java
@@ -20,7 +20,7 @@ package org.pf4j;
  * <p>
  * Lifecycle of a plugin:
  * <pre>
- * CREATED -> RESOLVED -> STARTED -> STOPPED
+ * CREATED -> RESOLVED -> STARTED -> STOPPED -> UNLOADED
  * CREATED -> DISABLED
  * CREATED -> FAILED
  *
@@ -57,7 +57,14 @@ public enum PluginState {
     /**
      * Plugin failed to start.
      */
-    FAILED("FAILED");
+    FAILED("FAILED"),
+
+    /**
+     * The plugin has been unloaded. After this event has been completed, the plugin's
+     * {@link ClassLoader} will be closed.
+     */
+    UNLOADED("UNLOADED"),
+    ;
 
     private final String status;
 
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