From 58d3c8e183c44fda43adb61ff4b0dba0ca0b3cc0 Mon Sep 17 00:00:00 2001
From: Valeriy Kucherenko <valeriy.kucherenko@gmail.com>
Date: Fri, 17 Jul 2020 19:51:43 +0300
Subject: [PATCH] Fix for problem with file lock on Windows platform. Introduce
 unloadPlugins method. (#387)

Thanks for your contribution!
---
 .../src/main/java/org/pf4j/AbstractPluginManager.java | 11 +++++++++++
 pf4j/src/main/java/org/pf4j/PluginManager.java        |  5 +++++
 pf4j/src/test/java/org/pf4j/JarPluginManagerTest.java |  2 ++
 3 files changed, 18 insertions(+)

diff --git a/pf4j/src/main/java/org/pf4j/AbstractPluginManager.java b/pf4j/src/main/java/org/pf4j/AbstractPluginManager.java
index 5b8b82c..ea8d297 100644
--- a/pf4j/src/main/java/org/pf4j/AbstractPluginManager.java
+++ b/pf4j/src/main/java/org/pf4j/AbstractPluginManager.java
@@ -235,6 +235,17 @@ public abstract class AbstractPluginManager implements PluginManager {
         }
     }
 
+    /**
+     * Unload all plugins
+     */
+    @Override
+    public void unloadPlugins() {
+        // wrap resolvedPlugins in new list because of concurrent modification
+        for (PluginWrapper pluginWrapper : new ArrayList<>(resolvedPlugins)) {
+            unloadPlugin(pluginWrapper.getPluginId());
+        }
+    }
+
     /**
      * Unload the specified plugin and it's dependents.
      */
diff --git a/pf4j/src/main/java/org/pf4j/PluginManager.java b/pf4j/src/main/java/org/pf4j/PluginManager.java
index a937f22..248b1ac 100644
--- a/pf4j/src/main/java/org/pf4j/PluginManager.java
+++ b/pf4j/src/main/java/org/pf4j/PluginManager.java
@@ -100,6 +100,11 @@ public interface PluginManager {
      */
     PluginState stopPlugin(String pluginId);
 
+    /**
+     * Unload all plugins
+     */
+    void unloadPlugins();
+
     /**
      * Unload a plugin.
      *
diff --git a/pf4j/src/test/java/org/pf4j/JarPluginManagerTest.java b/pf4j/src/test/java/org/pf4j/JarPluginManagerTest.java
index d9ca90a..4eb2872 100644
--- a/pf4j/src/test/java/org/pf4j/JarPluginManagerTest.java
+++ b/pf4j/src/test/java/org/pf4j/JarPluginManagerTest.java
@@ -53,6 +53,8 @@ public class JarPluginManagerTest {
 
     @AfterEach
     public void tearDown() {
+        pluginManager.unloadPlugins();
+
         pluginJar = null;
         pluginManager = null;
     }