Add reset support.

org.jdrupes.vmoperator.common/src/org/jdrupes/vmoperator/common/VmDefinitionModel.java

@@ -41,7 +41,8 @@ public class VmDefinitionModel extends K8sDynamicModel {
      * Permissions for accessing and manipulating the VM.
      */
     public enum Permission {
-        START("start"), STOP("stop"), ACCESS_CONSOLE("accessConsole");
+        START("start"), STOP("stop"), RESET("reset"),
+        ACCESS_CONSOLE("accessConsole");
 
         @SuppressWarnings("PMD.UseConcurrentHashMap")
         private static Map<String, Permission> reprs = new HashMap<>();

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

@@ -0,0 +1,48 @@
+/*
+ * 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.jgrapes.core.Event;
+
+/**
+ * Triggers a reset of the VM.
+ */
+@SuppressWarnings("PMD.DataClass")
+public class ResetVm extends Event<String> {
+
+    private final String vmName;
+
+    /**
+     * Instantiates a new event.
+     *
+     * @param vmName the vm name
+     */
+    public ResetVm(String vmName) {
+        this.vmName = vmName;
+    }
+
+    /**
+     * Gets the vm name.
+     *
+     * @return the vm name
+     */
+    public String vmName() {
+        return vmName;
+    }
+}

org.jdrupes.vmoperator.manager/build.gradle

@@ -18,10 +18,10 @@ dependencies {
     implementation 'org.jgrapes:org.jgrapes.http:[3.1.0,4)'
     implementation 'org.jgrapes:org.jgrapes.util:[1.34.0,2)'
     
-    implementation 'org.jgrapes:org.jgrapes.webconsole.base:[1.5.0,2)'
+    implementation 'org.jgrapes:org.jgrapes.webconsole.base:[1.7.0,2)'
     implementation 'org.jgrapes:org.jgrapes.webconsole.vuejs:[1.5.0,2)'
     implementation 'org.jgrapes:org.jgrapes.webconsole.rbac:[1.3.0,2)'
-    implementation 'org.jgrapes:org.jgrapes.webconlet.oidclogin:[1.3.0,2)'
+    implementation 'org.jgrapes:org.jgrapes.webconlet.oidclogin:[1.4.0,2)'
     implementation 'org.jgrapes:org.jgrapes.webconlet.markdowndisplay:[1.2.0,2)'
     
     runtimeOnly 'org.jgrapes:org.jgrapes.webconlet.sysinfo:[1.4.0,2)'

org.jdrupes.vmoperator.manager/resources/org/jdrupes/vmoperator/manager/runnerConfig.ftl.yaml

@@ -48,6 +48,12 @@ data:
       # Whether a shutdown initiated by the guest stops the pod deployment
       guestShutdownStops: ${ cr.spec.guestShutdownStops!false?c }
       
+      # When incremented, the VM is reset. The value has no default value,
+      # i.e. if you start the VM without a value for this property, and
+      # decide to trigger a reset later, you have to first set the value
+      # and then inrement it.
+      resetCounter: ${ cr.resetCount }
+
       # Forward the cloud-init data if provided
       <#if cr.spec.cloudInit??>    
       cloudInit:

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/ConfigMapReconciler.java

@@ -36,7 +36,6 @@ import org.jdrupes.vmoperator.common.K8s;
 import static org.jdrupes.vmoperator.manager.Constants.APP_NAME;
 import static org.jdrupes.vmoperator.manager.Constants.VM_OP_NAME;
 import org.jdrupes.vmoperator.manager.events.VmChannel;
-import org.jdrupes.vmoperator.manager.events.VmDefChanged;
 import org.yaml.snakeyaml.LoaderOptions;
 import org.yaml.snakeyaml.Yaml;
 import org.yaml.snakeyaml.constructor.SafeConstructor;
@@ -62,7 +61,6 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
     /**
      * Reconcile.
      *
-     * @param event the event
      * @param model the model
      * @param channel the channel
      * @return the dynamic kubernetes object
@@ -70,8 +68,8 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
      * @throws TemplateException the template exception
      * @throws ApiException the api exception
      */
-    public DynamicKubernetesObject reconcile(VmDefChanged event,
-            Map<String, Object> model, VmChannel channel)
+    public DynamicKubernetesObject reconcile(Map<String, Object> model,
+            VmChannel channel)
             throws IOException, TemplateException, ApiException {
         // Get API
         DynamicKubernetesApi cmApi = new DynamicKubernetesApi("", "v1",

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/Controller.java

@@ -181,13 +181,12 @@ public class Controller extends Component {
     @Handler
     public void onModifyVm(ModifyVm event, VmChannel channel)
             throws ApiException, IOException {
-        patchVmSpec(channel.client(), event.name(), event.path(),
+        patchVmDef(channel.client(), event.name(), "spec/vm/" + event.path(),
             event.value());
     }
 
-    private void patchVmSpec(K8sClient client, String name, String path,
-            Object value)
-            throws ApiException, IOException {
+    private void patchVmDef(K8sClient client, String name, String path,
+            Object value) throws ApiException, IOException {
         var vmStub = K8sDynamicStub.get(client,
             new GroupVersionKind(VM_OP_GROUP, "", VM_OP_KIND_VM), namespace,
             name);
@@ -197,7 +196,7 @@ public class Controller extends Component {
             ? "\"" + value + "\""
             : value.toString();
         var res = vmStub.patch(V1Patch.PATCH_FORMAT_JSON_PATCH,
-            new V1Patch("[{\"op\": \"replace\", \"path\": \"/spec/vm/"
+            new V1Patch("[{\"op\": \"replace\", \"path\": \"/"
                 + path + "\", \"value\": " + valueAsText + "}]"),
             client.defaultPatchOptions());
         if (!res.isPresent()) {

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/Reconciler.java

@@ -51,6 +51,7 @@ import org.jdrupes.vmoperator.common.K8sDynamicModel;
 import org.jdrupes.vmoperator.common.K8sObserver;
 import org.jdrupes.vmoperator.common.K8sV1SecretStub;
 import static org.jdrupes.vmoperator.manager.Constants.COMP_DISPLAY_SECRET;
+import org.jdrupes.vmoperator.manager.events.ResetVm;
 import org.jdrupes.vmoperator.manager.events.VmChannel;
 import org.jdrupes.vmoperator.manager.events.VmDefChanged;
 import org.jdrupes.vmoperator.util.ExtendedObjectWrapper;
@@ -209,13 +210,35 @@ public class Reconciler extends Component {
         // Reconcile, use "augmented" vm definition for model
         Map<String, Object> model
             = prepareModel(channel.client(), patchCr(event.vmDefinition()));
-        var configMap = cmReconciler.reconcile(event, model, channel);
+        var configMap = cmReconciler.reconcile(model, channel);
         model.put("cm", configMap.getRaw());
         dsReconciler.reconcile(event, model, channel);
         stsReconciler.reconcile(event, model, channel);
         lbReconciler.reconcile(event, model, channel);
     }
 
+    /**
+     * Reset the VM by incrementing the reset count and doing a 
+     * partial reconcile (configmap only).
+     *
+     * @param event the event
+     * @param channel the channel
+     * @throws IOException 
+     * @throws ApiException 
+     * @throws TemplateException 
+     */
+    @Handler
+    public void onResetVm(ResetVm event, VmChannel channel)
+            throws ApiException, IOException, TemplateException {
+        var defRoot
+            = GsonPtr.to(channel.vmDefinition().data()).get(JsonObject.class);
+        defRoot.addProperty("resetCount",
+            defRoot.get("resetCount").getAsLong() + 1);
+        Map<String, Object> model
+            = prepareModel(channel.client(), patchCr(channel.vmDefinition()));
+        cmReconciler.reconcile(model, channel);
+    }
+
     private DynamicKubernetesObject patchCr(K8sDynamicModel vmDef) {
         var json = vmDef.data().deepCopy();
         // Adjust cdromImage path

org.jdrupes.vmoperator.manager/src/org/jdrupes/vmoperator/manager/VmMonitor.java

@@ -25,13 +25,13 @@ import io.kubernetes.client.openapi.models.V1ObjectMeta;
 import io.kubernetes.client.util.Watch;
 import io.kubernetes.client.util.generic.options.ListOptions;
 import java.io.IOException;
+import java.util.Optional;
 import java.util.Set;
 import java.util.logging.Level;
 import java.util.stream.Collectors;
 import static org.jdrupes.vmoperator.common.Constants.VM_OP_GROUP;
 import org.jdrupes.vmoperator.common.K8s;
 import org.jdrupes.vmoperator.common.K8sClient;
-import org.jdrupes.vmoperator.common.K8sDynamicModel;
 import org.jdrupes.vmoperator.common.K8sDynamicStub;
 import org.jdrupes.vmoperator.common.K8sObserver.ResponseType;
 import org.jdrupes.vmoperator.common.K8sV1ConfigMapStub;
@@ -121,7 +121,7 @@ public class VmMonitor extends
         }
         if (vmDef.data() != null) {
             // New data, augment and save
-            addDynamicData(channel.client(), vmDef);
+            addDynamicData(channel.client(), vmDef, channel.vmDefinition());
             channel.setVmDefinition(vmDef);
         } else {
             // Reuse cached
@@ -151,8 +151,16 @@ public class VmMonitor extends
         }
     }
 
-    private void addDynamicData(K8sClient client, K8sDynamicModel vmState) {
+    private void addDynamicData(K8sClient client, VmDefinitionModel vmState,
+            VmDefinitionModel prevState) {
         var rootNode = GsonPtr.to(vmState.data()).get(JsonObject.class);
+
+        // Maintain (or initialize) the resetCount
+        rootNode.addProperty("resetCount", Optional.ofNullable(prevState)
+            .map(ps -> GsonPtr.to(ps.data()))
+            .flatMap(d -> d.getAsLong("resetCount")).orElse(0L));
+
+        // Add defaults in case the VM is not running
         rootNode.addProperty("nodeName", "");
         rootNode.addProperty("nodeAddress", "");
 

org.jdrupes.vmoperator.util/src/org/jdrupes/vmoperator/util/GsonPtr.java

@@ -265,6 +265,18 @@ public class GsonPtr {
         return set(selector, new JsonPrimitive(value));
     }
 
+    /**
+     * Short for `set(selector, new JsonPrimitive(value))`.
+     *
+     * @param selector the selector
+     * @param value the value
+     * @return the gson ptr
+     * @see #set(Object, JsonElement)
+     */
+    public GsonPtr set(Object selector, Long value) {
+        return set(selector, new JsonPrimitive(value));
+    }
+
     /**
      * Short for `set(selector, new JsonPrimitive(value))`.
      *

org.jdrupes.vmoperator.vmviewer/build.gradle

@@ -5,7 +5,7 @@ plugins {
 dependencies {
     implementation project(':org.jdrupes.vmoperator.manager.events')
     
-    implementation 'org.jgrapes:org.jgrapes.webconsole.base:[1.3.0,2)'
+    implementation 'org.jgrapes:org.jgrapes.webconsole.base:[1.7.0,2)'
     implementation 'org.jgrapes:org.jgrapes.webconsole.provider.vue:[1,2)'
     implementation 'org.jgrapes:org.jgrapes.webconsole.provider.jgwcvuecomponents:[1.2,2)'
     implementation 'org.jgrapes:org.jgrapes.webconsole.provider.chartjs:[1.2,2)'

org.jdrupes.vmoperator.vmviewer/resources/org/jdrupes/vmoperator/vmviewer/VmViewer-confirmReset.ftl.html

@@ -0,0 +1,13 @@
+<div 
+  class="jdrupes-vmoperator-vmviewer jdrupes-vmoperator-vmviewer-confirm-reset">
+  <p>${_("confirmResetMsg")}</p>
+  <p>
+    <span role="button" tabindex="0" class="svg-icon"
+      onclick="orgJDrupesVmOperatorVmViewer.confirmReset('${conletType}', '${conletId}')">
+      <svg viewBox="0 0 1541.33 1535.5083">
+        <path d="m 0,127.9968 v 448 c 0,35 29,64 64,64 h 448 c 35,0 64,-29 64,-64 0,-17 -6.92831,-33.07213 -19,-45 C 264.23058,241.7154 337.19508,314.89599 109,82.996795 c -11.999999,-12 -28,-19 -45,-19 -35,0 -64,29 -64,64.000005 z" />
+        <path d="m 772.97656,1535.5046 c 117.57061,0.3623 236.06134,-26.2848 345.77544,-81.4687 292.5708,-147.1572 459.8088,-465.37411 415.5214,-790.12504 C 1489.9861,339.15993 1243.597,77.463924 922.29883,14.342498 601.00067,-48.778928 274.05699,100.37563 110.62891,384.39133 c -34.855139,60.57216 -14.006492,137.9313 46.5664,172.78516 60.57172,34.85381 137.92941,14.00532 172.78321,-46.56641 109.97944,-191.12927 327.69604,-290.34657 543.53515,-247.94336 215.83913,42.40321 380.18953,216.77543 410.00973,435.44141 29.8203,218.66598 -81.8657,430.94957 -278.4863,529.84567 -196.6206,98.8962 -432.84043,61.8202 -589.90233,-92.6777 -24.91016,-24.5038 -85.48587,-83.3326 -119.02246,-52.9832 -24.01114,21.7292 -35.41741,29.5454 -59.9209,54.4559 -24.50381,24.9102 -35.33636,36.9034 -57.54543,60.4713 -38.1335,40.4667 34.10761,93.9685 59.01808,118.472 145.96311,143.5803 339.36149,219.2087 535.3125,219.8125 z"/>
+      </svg>
+    </span>
+  </p>
+</div>

org.jdrupes.vmoperator.vmviewer/resources/org/jdrupes/vmoperator/vmviewer/VmViewer-edit.ftl.html

@@ -1,4 +1,5 @@
-<div title="${_("conletName")}" class="jdrupes-vmoperator-vmviewer-edit"
+<div title="${_("conletName")}"
+  class="jdrupes-vmoperator-vmviewer jdrupes-vmoperator-vmviewer-edit"
   data-jgwc-on-load="orgJDrupesVmOperatorVmViewer.initEdit"
   data-jgwc-on-action="orgJDrupesVmOperatorVmViewer.applyEdit"    
   data-jgwc-on-unload="JGConsole.jgwc.unmountVueApps">

org.jdrupes.vmoperator.vmviewer/resources/org/jdrupes/vmoperator/vmviewer/VmViewer-preview.ftl.html

@@ -1,4 +1,5 @@
-<div class="jdrupes-vmoperator-vmviewer jdrupes-vmoperator-vmviewer-preview"
+<div 
+  class="jdrupes-vmoperator-vmviewer jdrupes-vmoperator-vmviewer-preview"
   data-conlet-grid-rows="2" data-conlet-grid-columns="2"
   data-jgwc-on-load="orgJDrupesVmOperatorVmViewer.initPreview"
   data-jgwc-on-unload="JGConsole.jgwc.unmountVueApps"

org.jdrupes.vmoperator.vmviewer/resources/org/jdrupes/vmoperator/vmviewer/l10n.properties

@@ -1,3 +1,7 @@
 conletName = VM Console
 
 okayLabel = Apply and Close
+
+confirmResetTitle = Confirm reset
+confirmResetMsg = Resetting the VM may cause loss of data. \
+  Please confirm to continue.

org.jdrupes.vmoperator.vmviewer/resources/org/jdrupes/vmoperator/vmviewer/l10n_de.properties

@@ -5,4 +5,9 @@ Select\ VM = VM ausw
 
 Start\ VM = VM starten
 Stop\ VM = VM anhalten
+Reset\ VM = VM zurücksetzen
 Open\ console = Konsole anzeigen
+
+confirmResetTitle = Zurücksetzen bestätigen
+confirmResetMsg = Zurücksetzen der VM kann zu Datenverlust führen. \
+  Bitte bestätigen um fortzufahren.

org.jdrupes.vmoperator.vmviewer/resources/org/jdrupes/vmoperator/vmviewer/reset-icon.svg

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   width="1541.33"
+   height="1535.5083"
+   version="1.1"
+   id="svg1"
+   sodipodi:docname="reset-icon2.svg"
+   inkscape:version="1.3.2 (091e20ef0f, 2023-11-25)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <sodipodi:namedview
+     id="namedview1"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:zoom="0.34987054"
+     inkscape:cx="704.54631"
+     inkscape:cy="711.69181"
+     inkscape:window-width="1920"
+     inkscape:window-height="1011"
+     inkscape:window-x="0"
+     inkscape:window-y="32"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg1" />
+  <path
+     d="m 0,127.9968 v 448 c 0,35 29,64 64,64 h 448 c 35,0 64,-29 64,-64 0,-17 -6.92831,-33.07213 -19,-45 C 264.23058,241.7154 337.19508,314.89599 109,82.996795 c -11.999999,-12 -28,-19 -45,-19 -35,0 -64,29 -64,64.000005 z"
+     id="path1"
+     sodipodi:nodetypes="sssssscss" />
+  <path
+     style="color:#000000;fill:#000000;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:0;-inkscape-stroke:none;paint-order:fill markers stroke"
+     d="m 772.97656,1535.5046 c 117.57061,0.3623 236.06134,-26.2848 345.77544,-81.4687 292.5708,-147.1572 459.8088,-465.37411 415.5214,-790.12504 C 1489.9861,339.15993 1243.597,77.463924 922.29883,14.342498 601.00067,-48.778928 274.05699,100.37563 110.62891,384.39133 c -34.855139,60.57216 -14.006492,137.9313 46.5664,172.78516 60.57172,34.85381 137.92941,14.00532 172.78321,-46.56641 109.97944,-191.12927 327.69604,-290.34657 543.53515,-247.94336 215.83913,42.40321 380.18953,216.77543 410.00973,435.44141 29.8203,218.66598 -81.8657,430.94957 -278.4863,529.84567 -196.6206,98.8962 -432.84043,61.8202 -589.90233,-92.6777 -24.91016,-24.5038 -85.48587,-83.3326 -119.02246,-52.9832 -24.01114,21.7292 -35.41741,29.5454 -59.9209,54.4559 -24.50381,24.9102 -35.33636,36.9034 -57.54543,60.4713 -38.1335,40.4667 34.10761,93.9685 59.01808,118.472 145.96311,143.5803 339.36149,219.2087 535.3125,219.8125 z"
+     id="path2"
+     sodipodi:nodetypes="sssscccssscscscs" />
+</svg>

org.jdrupes.vmoperator.vmviewer/src/org/jdrupes/vmoperator/vmviewer/VmViewer.java

@@ -54,6 +54,7 @@ import org.jdrupes.vmoperator.common.VmDefinitionModel.Permission;
 import org.jdrupes.vmoperator.manager.events.ChannelCache;
 import org.jdrupes.vmoperator.manager.events.GetDisplayPassword;
 import org.jdrupes.vmoperator.manager.events.ModifyVm;
+import org.jdrupes.vmoperator.manager.events.ResetVm;
 import org.jdrupes.vmoperator.manager.events.VmChannel;
 import org.jdrupes.vmoperator.manager.events.VmDefChanged;
 import org.jdrupes.vmoperator.util.GsonPtr;
@@ -93,7 +94,7 @@ import org.jgrapes.webconsole.base.freemarker.FreeMarkerConlet;
  * The Class VmViewer.
  */
 @SuppressWarnings({ "PMD.DataflowAnomalyAnalysis", "PMD.ExcessiveImports",
-    "PMD.CouplingBetweenObjects", "PMD.GodClass" })
+    "PMD.CouplingBetweenObjects", "PMD.GodClass", "PMD.TooManyMethods" })
 public class VmViewer extends FreeMarkerConlet<VmViewer.ViewerModel> {
 
     private static final String VM_NAME_PROPERTY = "vmName";
@@ -465,12 +466,12 @@ public class VmViewer extends FreeMarkerConlet<VmViewer.ViewerModel> {
 
     @Override
     @SuppressWarnings({ "PMD.AvoidDecimalLiteralsInBigDecimalConstructor",
-        "PMD.ConfusingArgumentToVarargsMethod" })
+        "PMD.ConfusingArgumentToVarargsMethod", "PMD.NcssCount" })
     protected void doUpdateConletState(NotifyConletModel event,
             ConsoleConnection channel, ViewerModel model)
             throws Exception {
         event.stop();
-        var both = Optional.ofNullable(event.params().asString(0))
+        var both = Optional.ofNullable(model.vmName())
             .flatMap(vm -> channelManager.both(vm));
         if (both.isEmpty()) {
             return;
@@ -479,6 +480,7 @@ public class VmViewer extends FreeMarkerConlet<VmViewer.ViewerModel> {
         var vmDef = both.get().associated;
         var vmName = vmDef.metadata().getName();
         var perms = permissions(vmDef, channel.session());
+        var resourceBundle = resourceBundle(channel.locale());
         switch (event.method()) {
         case "selectedVm":
             model.setVmName(event.params().asString(0));
@@ -497,6 +499,16 @@ public class VmViewer extends FreeMarkerConlet<VmViewer.ViewerModel> {
                 fire(new ModifyVm(vmName, "state", "Stopped", vmChannel));
             }
             break;
+        case "reset":
+            if (perms.contains(Permission.RESET)) {
+                confirmReset(event, channel, model, resourceBundle);
+            }
+            break;
+        case "resetConfirmed":
+            if (perms.contains(Permission.RESET)) {
+                fire(new ResetVm(vmName), vmChannel);
+            }
+            break;
         case "openConsole":
             if (perms.contains(Permission.ACCESS_CONSOLE)) {
                 var pwQuery = Event.onCompletion(new GetDisplayPassword(vmDef),
@@ -577,6 +589,20 @@ public class VmViewer extends FreeMarkerConlet<VmViewer.ViewerModel> {
             .findFirst().or(() -> addrs.stream().findFirst());
     }
 
+    private void confirmReset(NotifyConletModel event,
+            ConsoleConnection channel, ViewerModel model,
+            ResourceBundle resourceBundle) throws TemplateNotFoundException,
+            MalformedTemplateNameException, ParseException, IOException {
+        Template tpl = freemarkerConfig()
+            .getTemplate("VmViewer-confirmReset.ftl.html");
+        channel.respond(new OpenModalDialog(type(), model.getConletId(),
+            processTemplate(event, tpl,
+                fmModel(event, channel, model.getConletId(), model)))
+                    .addOption("cancelable", true).addOption("closeLabel", "")
+                    .addOption("title",
+                        resourceBundle.getString("confirmResetTitle")));
+    }
+
     @Override
     protected boolean doSetLocale(SetLocale event, ConsoleConnection channel,
             String conletId) throws Exception {

org.jdrupes.vmoperator.vmviewer/src/org/jdrupes/vmoperator/vmviewer/browser/VmViewer-functions.ts

@@ -31,8 +31,9 @@ declare global {
     interface Window {
         orgJDrupesVmOperatorVmViewer: { 
             initPreview?: (previewDom: HTMLElement, isUpdate: boolean) => void,
-            initEdit?: (viewDom: HTMLElement, isUpdate: boolean) => void
-            applyEdit?: (viewDom: HTMLElement, apply: boolean) => void
+            initEdit?: (viewDom: HTMLElement, isUpdate: boolean) => void,
+            applyEdit?: (viewDom: HTMLElement, apply: boolean) => void,
+            confirmReset?: (conletType: string, conletId: string) => void
         }
     }
 }
@@ -74,7 +75,7 @@ window.orgJDrupesVmOperatorVmViewer.initPreview = (previewDom: HTMLElement,
             provideApi(previewDom, previewApi);
 
             const vmAction = (vmName: string, action: string) => {
-                JGConsole.notifyConletModel(conletId, action, vmName);
+                JGConsole.notifyConletModel(conletId, action);
             };
         
             return { localize, resourceBase, vmDef, vmAction };
@@ -83,7 +84,7 @@ window.orgJDrupesVmOperatorVmViewer.initPreview = (previewDom: HTMLElement,
           <table>
             <tbody>
               <tr>
-                <td><img role=button 
+                <td rowspan="2"><img role=button 
                   :aria-disabled="!vmDef.running || !vmDef.userPermissions
                     || !vmDef.userPermissions.includes('accessConsole')" 
                   v-on:click="vmAction(vmDef.name, 'openConsole')"
@@ -106,6 +107,15 @@ window.orgJDrupesVmOperatorVmViewer.initPreview = (previewDom: HTMLElement,
                     v-on:click="vmAction(vmDef.name, 'stop')"></span>
                   <span role="button" v-else class="fa fa-stop"
                     aria-disabled="true" :title="localize('Stop VM')"></span>
+                  <span role="button"
+                    :aria-disabled="!vmDef.running || !vmDef.userPermissions.includes('reset')" 
+                    tabindex="0" class="svg-icon" :title="localize('Reset VM')"
+                    v-on:click="vmAction(vmDef.name, 'reset')">
+                    <svg viewBox="0 0 1541.33 1535.5083">
+                      <path d="m 0,127.9968 v 448 c 0,35 29,64 64,64 h 448 c 35,0 64,-29 64,-64 0,-17 -6.92831,-33.07213 -19,-45 C 264.23058,241.7154 337.19508,314.89599 109,82.996795 c -11.999999,-12 -28,-19 -45,-19 -35,0 -64,29 -64,64.000005 z" />
+                      <path d="m 772.97656,1535.5046 c 117.57061,0.3623 236.06134,-26.2848 345.77544,-81.4687 292.5708,-147.1572 459.8088,-465.37411 415.5214,-790.12504 C 1489.9861,339.15993 1243.597,77.463924 922.29883,14.342498 601.00067,-48.778928 274.05699,100.37563 110.62891,384.39133 c -34.855139,60.57216 -14.006492,137.9313 46.5664,172.78516 60.57172,34.85381 137.92941,14.00532 172.78321,-46.56641 109.97944,-191.12927 327.69604,-290.34657 543.53515,-247.94336 215.83913,42.40321 380.18953,216.77543 410.00973,435.44141 29.8203,218.66598 -81.8657,430.94957 -278.4863,529.84567 -196.6206,98.8962 -432.84043,61.8202 -589.90233,-92.6777 -24.91016,-24.5038 -85.48587,-83.3326 -119.02246,-52.9832 -24.01114,21.7292 -35.41741,29.5454 -59.9209,54.4559 -24.50381,24.9102 -35.33636,36.9034 -57.54543,60.4713 -38.1335,40.4667 34.10761,93.9685 59.01808,118.472 145.96311,143.5803 339.36149,219.2087 535.3125,219.8125 z"/>
+                    </svg>
+                  </span>
                 </td>
                 <td v-else>
                 </td>
@@ -211,3 +221,9 @@ window.orgJDrupesVmOperatorVmViewer.applyEdit =
     const vmName = getApi<ref<string>>(dialogDom!)!.value;
     JGConsole.notifyConletModel(conletId, "selectedVm", vmName);
 }
+
+window.orgJDrupesVmOperatorVmViewer.confirmReset = 
+        (conletType: string, conletId: string) => {
+    JGConsole.instance.closeModalDialog(conletType, conletId);
+    JGConsole.notifyConletModel(conletId, "resetConfirmed");
+}

org.jdrupes.vmoperator.vmviewer/src/org/jdrupes/vmoperator/vmviewer/browser/VmViewer-style.scss

@@ -19,7 +19,24 @@
 /*
  * Conlet specific styles.
  */
-.jdrupes-vmoperator-vmviewer-preview {
+.jdrupes-vmoperator-vmviewer {
+  
+  span[role="button"].svg-icon {
+    display: inline-block;
+    line-height: 1;
+    /* Align with forkawesome */
+    font-size: 14px;
+    fill: var(--primary);
+
+    &[aria-disabled="true"], &[aria-disabled=""] {
+      fill: var(--disabled);
+    }
+    
+    svg {
+      height: 2ex;
+      width: 1em;
+    }
+  }
 
   [role=button] {
     padding: 0.25rem;
@@ -28,6 +45,9 @@
       box-shadow: var(--darkening);
     }
   }
+}
+
+.jdrupes-vmoperator-vmviewer.jdrupes-vmoperator-vmviewer-preview {
   
   img {
     height: 3em;
@@ -37,14 +57,30 @@
         opacity: 0.4;
     }
   }
-}
   
   .jdrupes-vmoperator-vmviewer-preview-action-list {
     white-space: nowrap;
   }
+}
 
-.jdrupes-vmoperator-vmviewer-edit {
+.jdrupes-vmoperator-vmviewer.jdrupes-vmoperator-vmviewer-edit {
   select {
     width: 15em;
   }
 }
+
+.jdrupes-vmoperator-vmviewer.jdrupes-vmoperator-vmviewer-confirm-reset {
+  p {
+    text-align: center;
+  }
+  
+  span[role="button"].svg-icon {
+    fill: var(--danger);
+
+    svg {
+      width: 2.5em;
+      height: 2.5em;
+    }
+  }
+  
+}