Basically working.

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/AssignVm.java

@@ -0,0 +1,61 @@
+/*
+ * VM-Operator
+ * Copyright (C) 2024 Michael N. Lipp
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.jdrupes.vmoperator.manager.events;
+
+import org.jdrupes.vmoperator.manager.events.GetVms.VmData;
+import org.jgrapes.core.Event;
+
+/**
+ * Assign a VM from a pool to a user.
+ */
+@SuppressWarnings("PMD.DataClass")
+public class AssignVm extends Event<VmData> {
+
+    private final String fromPool;
+    private final String toUser;
+
+    /**
+     * Instantiates a new event.
+     *
+     * @param fromPool the from pool
+     * @param toUser the to user
+     */
+    public AssignVm(String fromPool, String toUser) {
+        this.fromPool = fromPool;
+        this.toUser = toUser;
+    }
+
+    /**
+     * Gets the pool to assign from.
+     *
+     * @return the pool
+     */
+    public String fromPool() {
+        return fromPool;
+    }
+
+    /**
+     * Gets the user to assign to.
+     *
+     * @return the to user
+     */
+    public String toUser() {
+        return toUser;
+    }
+}

org.jdrupes.vmoperator.manager.events/src/org/jdrupes/vmoperator/manager/events/GetVms.java

@@ -33,6 +33,8 @@ public class GetVms extends Event<List<GetVms.VmData>> {
     private String name;
     private String user;
     private List<String> roles = Collections.emptyList();
+    private String fromPool;
+    private String toUser;
 
     /**
      * Return only the VMs with the given name.
@@ -59,6 +61,28 @@ public class GetVms extends Event<List<GetVms.VmData>> {
         return this;
     }
 
+    /**
+     * Return only {@link VmDefinition}s that are assigned from the given pool.
+     *
+     * @param pool the pool
+     * @return the returns the vms
+     */
+    public GetVms assignedFrom(String pool) {
+        this.fromPool = pool;
+        return this;
+    }
+
+    /**
+     * Return only {@link VmDefinition}s that are assigned to the given user.
+     *
+     * @param user the user
+     * @return the returns the vms
+     */
+    public GetVms assignedTo(String user) {
+        this.toUser = user;
+        return this;
+    }
+
     /**
      * Returns the name filter criterion, if set.
      *
@@ -86,6 +110,24 @@ public class GetVms extends Event<List<GetVms.VmData>> {
         return roles;
     }
 
+    /**
+     * Returns the pool filter criterion, if set.
+     *
+     * @return the optional
+     */
+    public Optional<String> fromPool() {
+        return Optional.ofNullable(fromPool);
+    }
+
+    /**
+     * Returns the user filter criterion, if set.
+     *
+     * @return the optional
+     */
+    public Optional<String> toUser() {
+        return Optional.ofNullable(toUser);
+    }
+
     /**
      * Return tuple.
      *