Ensure caches are invalidated when Bukkit/Nukkit's Permission#getChildren map is modified (#1378)

common/src/main/java/me/lucko/luckperms/common/calculator/PermissionCalculator.java

@@ -130,6 +130,9 @@ public class PermissionCalculator implements Function<String, Tristate> {
     }
 
     public void invalidateCache() {
+        for (PermissionProcessor processor : this.processors) {
+            processor.invalidate();
+        }
         this.lookupCache.clear();
     }
 }

common/src/main/java/me/lucko/luckperms/common/calculator/processor/PermissionProcessor.java

@@ -62,4 +62,11 @@ public interface PermissionProcessor {
 
     }
 
+    /**
+     * Called after the parent calculator has been invalidated
+     */
+    default void invalidate() {
+
+    }
+
 }

common/src/main/java/me/lucko/luckperms/common/model/manager/group/AbstractGroupManager.java

@@ -69,4 +69,9 @@ public abstract class AbstractGroupManager<T extends Group> extends AbstractMana
     public void invalidateAllGroupCaches() {
         getAll().values().forEach(PermissionHolder::invalidateCachedData);
     }
+
+    @Override
+    public void invalidateAllPermissionCalculators() {
+        getAll().values().forEach(p -> p.getCachedData().invalidatePermissionCalculators());
+    }
 }

common/src/main/java/me/lucko/luckperms/common/model/manager/group/GroupManager.java

@@ -25,6 +25,7 @@
 
 package me.lucko.luckperms.common.model.manager.group;
 
+import me.lucko.luckperms.common.calculator.PermissionCalculator;
 import me.lucko.luckperms.common.model.Group;
 import me.lucko.luckperms.common.model.manager.Manager;
 
@@ -43,4 +44,9 @@ public interface GroupManager<T extends Group> extends Manager<String, Group, T>
      */
     void invalidateAllGroupCaches();
 
+    /**
+     * Invalidates the {@link PermissionCalculator}s for *loaded* groups.
+     */
+    void invalidateAllPermissionCalculators();
+
 }

common/src/main/java/me/lucko/luckperms/common/model/manager/user/AbstractUserManager.java

@@ -162,6 +162,11 @@ public abstract class AbstractUserManager<T extends User> extends AbstractManage
         getAll().values().forEach(PermissionHolder::invalidateCachedData);
     }
 
+    @Override
+    public void invalidateAllPermissionCalculators() {
+        getAll().values().forEach(p -> p.getCachedData().invalidatePermissionCalculators());
+    }
+
     /**
      * Check whether the user's state indicates that they should be persisted to storage.
      *

common/src/main/java/me/lucko/luckperms/common/model/manager/user/UserManager.java

@@ -25,6 +25,7 @@
 
 package me.lucko.luckperms.common.model.manager.user;
 
+import me.lucko.luckperms.common.calculator.PermissionCalculator;
 import me.lucko.luckperms.common.model.User;
 import me.lucko.luckperms.common.model.UserIdentifier;
 import me.lucko.luckperms.common.model.manager.Manager;
@@ -89,4 +90,9 @@ public interface UserManager<T extends User> extends Manager<UserIdentifier, Use
      */
     void invalidateAllUserCaches();
 
+    /**
+     * Invalidates the {@link PermissionCalculator}s for *loaded* users.
+     */
+    void invalidateAllPermissionCalculators();
+
 }