Merge branch 'main' into testing

This commit is contained in:
Michael Lipp 2025-03-14 11:24:46 +01:00
commit fe4680ddc2
11 changed files with 336 additions and 87 deletions

View file

@ -11,7 +11,7 @@ metadata:
annotations:
# Triggers update of config map mounted in pod
# See https://ahmet.im/blog/kubernetes-secret-volumes-delay/
vmrunner.jdrupes.org/cmVersion: "${ cm.metadata.resourceVersion }"
vmrunner.jdrupes.org/cmVersion: "${ configMapResourceVersion }"
vmoperator.jdrupes.org/version: ${ managerVersion }
ownerReferences:
- apiVersion: ${ cr.apiVersion() }

View file

@ -19,11 +19,17 @@
package org.jdrupes.vmoperator.manager;
import com.google.gson.JsonObject;
import freemarker.template.AdapterTemplateModel;
import freemarker.template.Configuration;
import freemarker.template.TemplateException;
import freemarker.template.TemplateMethodModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import freemarker.template.utility.DeepUnwrap;
import io.kubernetes.client.custom.V1Patch;
import io.kubernetes.client.openapi.ApiClient;
import io.kubernetes.client.openapi.ApiException;
import io.kubernetes.client.openapi.models.V1ObjectMeta;
import io.kubernetes.client.util.generic.dynamic.DynamicKubernetesApi;
import io.kubernetes.client.util.generic.dynamic.DynamicKubernetesObject;
import io.kubernetes.client.util.generic.dynamic.Dynamics;
@ -31,7 +37,11 @@ import io.kubernetes.client.util.generic.options.ListOptions;
import io.kubernetes.client.util.generic.options.PatchOptions;
import java.io.IOException;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.logging.Logger;
import org.jdrupes.vmoperator.common.K8s;
import static org.jdrupes.vmoperator.manager.Constants.APP_NAME;
@ -66,48 +76,59 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
*
* @param model the model
* @param channel the channel
* @return the dynamic kubernetes object
* @throws IOException Signals that an I/O exception has occurred.
* @throws TemplateException the template exception
* @throws ApiException the api exception
*/
public Map<String, Object> reconcile(Map<String, Object> model,
VmChannel channel)
@SuppressWarnings("PMD.AvoidDuplicateLiterals")
public void reconcile(Map<String, Object> model, VmChannel channel)
throws IOException, TemplateException, ApiException {
// Combine template and data and parse result
model.put("adjustCloudInitMeta", adjustCloudInitMetaModel);
var fmTemplate = fmConfig.getTemplate("runnerConfig.ftl.yaml");
StringWriter out = new StringWriter();
fmTemplate.process(model, out);
// Avoid Yaml.load due to
// https://github.com/kubernetes-client/java/issues/2741
var mapDef = Dynamics.newFromYaml(
var newCm = Dynamics.newFromYaml(
new Yaml(new SafeConstructor(new LoaderOptions())), out.toString());
// Maybe override logging.properties from reconciler configuration.
DataPath.<String> get(model, "reconciler", "loggingProperties")
.ifPresent(props -> {
GsonPtr.to(mapDef.getRaw()).getAs(JsonObject.class, "data")
GsonPtr.to(newCm.getRaw()).getAs(JsonObject.class, "data")
.get().addProperty("logging.properties", props);
});
// Maybe override logging.properties from VM definition.
DataPath.<String> get(model, "cr", "spec", "loggingProperties")
.ifPresent(props -> {
GsonPtr.to(mapDef.getRaw()).getAs(JsonObject.class, "data")
GsonPtr.to(newCm.getRaw()).getAs(JsonObject.class, "data")
.get().addProperty("logging.properties", props);
});
// Get API
// Look for changes
var oldCm = channel
.associated(getClass(), DynamicKubernetesObject.class).orElse(null);
channel.setAssociated(getClass(), newCm);
if (oldCm != null && Objects.equals(oldCm.getRaw().get("data"),
newCm.getRaw().get("data"))) {
logger.finer(() -> "No changes in config map for "
+ DataPath.<String> get(model, "cr", "name").get());
model.put("configMapResourceVersion",
oldCm.getMetadata().getResourceVersion());
return;
}
// Get API and update
DynamicKubernetesApi cmApi = new DynamicKubernetesApi("", "v1",
"configmaps", channel.client());
// Apply and maybe force pod update
var newState = K8s.apply(cmApi, mapDef, mapDef.getRaw().toString());
maybeForceUpdate(channel.client(), newState);
@SuppressWarnings("unchecked")
var res = (Map<String, Object>) channel.client().getJSON().getGson()
.fromJson(newState.getRaw(), Map.class);
return res;
var updatedCm = K8s.apply(cmApi, newCm, newCm.getRaw().toString());
maybeForceUpdate(channel.client(), updatedCm);
model.put("configMapResourceVersion",
updatedCm.getMetadata().getResourceVersion());
}
/**
@ -153,4 +174,28 @@ import org.yaml.snakeyaml.constructor.SafeConstructor;
}
}
private final TemplateMethodModelEx adjustCloudInitMetaModel
= new TemplateMethodModelEx() {
@Override
@SuppressWarnings("PMD.PreserveStackTrace")
public Object exec(@SuppressWarnings("rawtypes") List arguments)
throws TemplateModelException {
@SuppressWarnings("unchecked")
var res = new HashMap<>((Map<String, Object>) DeepUnwrap
.unwrap((TemplateModel) arguments.get(0)));
var metadata
= (V1ObjectMeta) ((AdapterTemplateModel) arguments.get(1))
.getAdaptedObject(Object.class);
if (!res.containsKey("instance-id")) {
res.put("instance-id",
Optional.ofNullable(metadata.getGeneration())
.map(s -> "v" + s).orElse("v1"));
}
if (!res.containsKey("local-hostname")) {
res.put("local-hostname", metadata.getName());
}
return res;
}
};
}

View file

@ -27,12 +27,9 @@ import freemarker.template.SimpleScalar;
import freemarker.template.TemplateException;
import freemarker.template.TemplateExceptionHandler;
import freemarker.template.TemplateMethodModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import freemarker.template.utility.DeepUnwrap;
import io.kubernetes.client.custom.Quantity;
import io.kubernetes.client.openapi.ApiException;
import io.kubernetes.client.openapi.models.V1ObjectMeta;
import io.kubernetes.client.util.generic.options.ListOptions;
import java.io.IOException;
import java.lang.reflect.Modifier;
@ -226,13 +223,12 @@ public class Reconciler extends Component {
// Create model for processing templates
Map<String, Object> model
= prepareModel(channel.client(), event.vmDefinition());
var configMap = cmReconciler.reconcile(model, channel);
cmReconciler.reconcile(model, channel);
// The remaining reconcilers depend only on changes of the spec part.
if (!event.specChanged()) {
return;
}
model.put("cm", configMap);
dsReconciler.reconcile(event, model, channel);
// Manage (eventual) removal of stateful set.
stsReconciler.reconcile(event, model, channel);
@ -279,7 +275,6 @@ public class Reconciler extends Component {
model.put("parseQuantity", parseQuantityModel);
model.put("formatMemory", formatMemoryModel);
model.put("imageLocation", imgageLocationModel);
model.put("adjustCloudInitMeta", adjustCloudInitMetaModel);
model.put("toJson", toJsonModel);
return model;
}
@ -422,30 +417,6 @@ public class Reconciler extends Component {
}
};
private final TemplateMethodModelEx adjustCloudInitMetaModel
= new TemplateMethodModelEx() {
@Override
@SuppressWarnings("PMD.PreserveStackTrace")
public Object exec(@SuppressWarnings("rawtypes") List arguments)
throws TemplateModelException {
@SuppressWarnings("unchecked")
var res = new HashMap<>((Map<String, Object>) DeepUnwrap
.unwrap((TemplateModel) arguments.get(0)));
var metadata
= (V1ObjectMeta) ((AdapterTemplateModel) arguments.get(1))
.getAdaptedObject(Object.class);
if (!res.containsKey("instance-id")) {
res.put("instance-id",
Optional.ofNullable(metadata.getResourceVersion())
.map(s -> "v" + s).orElse("v1"));
}
if (!res.containsKey("local-hostname")) {
res.put("local-hostname", metadata.getName());
}
return res;
}
};
private final TemplateMethodModelEx toJsonModel
= new TemplateMethodModelEx() {
@Override

View file

@ -92,8 +92,12 @@ public abstract class AgentConnector extends QemuConnector {
*/
@Handler
public void onVserportChanged(VserportChangeEvent event) {
if (event.id().equals(channelId) && event.isOpen()) {
agentConnected();
if (event.id().equals(channelId)) {
if (event.isOpen()) {
agentConnected();
} else {
agentDisconnected();
}
}
}
@ -105,4 +109,14 @@ public abstract class AgentConnector extends QemuConnector {
protected void agentConnected() {
// Default is to do nothing.
}
/**
* Called when the agent in the VM closes the connection. The
* default implementation does nothing.
*/
@SuppressWarnings("PMD.EmptyMethodInAbstractClassShouldBeAbstract")
protected void agentDisconnected() {
// Default is to do nothing.
}
}

View file

@ -0,0 +1,42 @@
/*
* VM-Operator
* Copyright (C) 2023 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.runner.qemu;
/**
* Some constants.
*/
@SuppressWarnings("PMD.DataClass")
public class Constants extends org.jdrupes.vmoperator.common.Constants {
/**
* Process names.
*/
public static class ProcessName {
/** The Constant QEMU. */
public static final String QEMU = "qemu";
/** The Constant SWTPM. */
public static final String SWTPM = "swtpm";
/** The Constant CLOUD_INIT_IMG. */
public static final String CLOUD_INIT_IMG = "cloudInitImg";
}
}

View file

@ -116,9 +116,11 @@ public class DisplayController extends Component {
@Handler
@SuppressWarnings("PMD.EmptyCatchBlock")
public void onFileChanged(FileChanged event) {
if (event.path().equals(configDir.resolve(DisplaySecret.PASSWORD))
&& canBeUpdated) {
configurePassword();
if (event.path().equals(configDir.resolve(DisplaySecret.PASSWORD))) {
logger.fine(() -> "Display password updated");
if (canBeUpdated) {
configurePassword();
}
}
}

View file

@ -21,15 +21,23 @@ package org.jdrupes.vmoperator.runner.qemu;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.node.ObjectNode;
import java.io.IOException;
import java.time.Instant;
import java.util.LinkedList;
import java.util.Queue;
import java.util.logging.Level;
import org.jdrupes.vmoperator.runner.qemu.Constants.ProcessName;
import org.jdrupes.vmoperator.runner.qemu.commands.QmpCommand;
import org.jdrupes.vmoperator.runner.qemu.commands.QmpGuestGetOsinfo;
import org.jdrupes.vmoperator.runner.qemu.commands.QmpGuestPowerdown;
import org.jdrupes.vmoperator.runner.qemu.events.ConfigureQemu;
import org.jdrupes.vmoperator.runner.qemu.events.GuestAgentCommand;
import org.jdrupes.vmoperator.runner.qemu.events.OsinfoEvent;
import org.jgrapes.core.Channel;
import org.jgrapes.core.Components;
import org.jgrapes.core.Components.Timer;
import org.jgrapes.core.annotation.Handler;
import org.jgrapes.core.events.Stop;
import org.jgrapes.io.events.ProcessExited;
/**
* A component that handles the communication with the guest agent.
@ -39,7 +47,12 @@ import org.jgrapes.core.annotation.Handler;
*/
public class GuestAgentClient extends AgentConnector {
private boolean connected;
private Instant powerdownStartedAt;
private int powerdownTimeout;
private Timer powerdownTimer;
private final Queue<QmpCommand> executing = new LinkedList<>();
private Stop suspendedStop;
/**
* Instantiates a new guest agent client.
@ -56,9 +69,17 @@ public class GuestAgentClient extends AgentConnector {
*/
@Override
protected void agentConnected() {
logger.fine(() -> "guest agent connected");
connected = true;
rep().fire(new GuestAgentCommand(new QmpGuestGetOsinfo()));
}
@Override
protected void agentDisconnected() {
logger.fine(() -> "guest agent disconnected");
connected = false;
}
/**
* Process agent input.
*
@ -88,10 +109,11 @@ public class GuestAgentClient extends AgentConnector {
* On guest agent command.
*
* @param event the event
* @throws IOException
* @throws IOException Signals that an I/O exception has occurred.
*/
@Handler
@SuppressWarnings("PMD.AvoidSynchronizedStatement")
@SuppressWarnings({ "PMD.AvoidSynchronizedStatement",
"PMD.AvoidDuplicateLiterals" })
public void onGuestAgentCommand(GuestAgentCommand event)
throws IOException {
if (qemuChannel() == null) {
@ -114,4 +136,89 @@ public class GuestAgentClient extends AgentConnector {
}
}
}
/**
* Shutdown the VM.
*
* @param event the event
*/
@Handler(priority = 200)
@SuppressWarnings("PMD.AvoidSynchronizedStatement")
public void onStop(Stop event) {
if (!connected) {
logger.fine(() -> "No guest agent connection,"
+ " cannot send shutdown command");
return;
}
// We have a connection to the guest agent attempt shutdown.
powerdownStartedAt = event.associated(Instant.class).orElseGet(() -> {
var now = Instant.now();
event.setAssociated(Instant.class, now);
return now;
});
var waitUntil = powerdownStartedAt.plusSeconds(powerdownTimeout);
if (waitUntil.isBefore(Instant.now())) {
return;
}
event.suspendHandling();
suspendedStop = event;
logger.fine(() -> "Sending powerdown command, waiting for"
+ " termination until " + waitUntil);
powerdownTimer = Components.schedule(t -> {
logger.fine(() -> "Powerdown timeout reached.");
synchronized (this) {
powerdownTimer = null;
if (suspendedStop != null) {
suspendedStop.resumeHandling();
suspendedStop = null;
}
}
}, waitUntil);
rep().fire(new GuestAgentCommand(new QmpGuestPowerdown()));
}
/**
* On process exited.
*
* @param event the event
*/
@Handler
@SuppressWarnings("PMD.AvoidSynchronizedStatement")
public void onProcessExited(ProcessExited event) {
if (!event.startedBy().associated(CommandDefinition.class)
.map(cd -> ProcessName.QEMU.equals(cd.name())).orElse(false)) {
return;
}
synchronized (this) {
if (powerdownTimer != null) {
powerdownTimer.cancel();
}
if (suspendedStop != null) {
suspendedStop.resumeHandling();
suspendedStop = null;
}
}
}
/**
* On configure qemu.
*
* @param event the event
*/
@Handler
@SuppressWarnings("PMD.AvoidSynchronizedStatement")
public void onConfigureQemu(ConfigureQemu event) {
int newTimeout = event.configuration().vm.powerdownTimeout;
if (powerdownTimeout != newTimeout) {
powerdownTimeout = newTimeout;
synchronized (this) {
if (powerdownTimer != null) {
powerdownTimer
.reschedule(powerdownStartedAt.plusSeconds(newTimeout));
}
}
}
}
}

View file

@ -242,7 +242,7 @@ public abstract class QemuConnector extends Component {
*/
@Handler
public void onClosed(Closed<?> event, SocketIOChannel channel) {
channel.associated(this, getClass()).ifPresent(qm -> {
channel.associated(this, getClass()).ifPresent(qc -> {
qemuChannel = null;
});
}

View file

@ -27,6 +27,7 @@ import java.time.Instant;
import java.util.LinkedList;
import java.util.Queue;
import java.util.logging.Level;
import org.jdrupes.vmoperator.runner.qemu.Constants.ProcessName;
import org.jdrupes.vmoperator.runner.qemu.commands.QmpCapabilities;
import org.jdrupes.vmoperator.runner.qemu.commands.QmpCommand;
import org.jdrupes.vmoperator.runner.qemu.commands.QmpPowerdown;
@ -42,6 +43,7 @@ import org.jgrapes.core.Components.Timer;
import org.jgrapes.core.annotation.Handler;
import org.jgrapes.core.events.Stop;
import org.jgrapes.io.events.Closed;
import org.jgrapes.io.events.ProcessExited;
import org.jgrapes.net.SocketIOChannel;
import org.jgrapes.util.events.ConfigurationUpdate;
@ -136,24 +138,12 @@ public class QemuMonitor extends QemuConnector {
* @param event the event
*/
@Handler
@SuppressWarnings({ "PMD.AvoidSynchronizedStatement",
"PMD.AvoidDuplicateLiterals" })
public void onClosed(Closed<?> event, SocketIOChannel channel) {
super.onClosed(event, channel);
logger.finer(() -> "QMP socket closed.");
monitorReady = false;
channel.associated(this, getClass()).ifPresent(qm -> {
synchronized (this) {
if (powerdownTimer != null) {
powerdownTimer.cancel();
}
if (suspendedStop != null) {
suspendedStop.resumeHandling();
suspendedStop = null;
}
}
super.onClosed(event, channel);
logger.finer(() -> "QMP socket closed.");
monitorReady = false;
});
logger.finer(() -> "QMP socket closed.");
}
/**
@ -163,7 +153,8 @@ public class QemuMonitor extends QemuConnector {
* @throws IOException
*/
@Handler
@SuppressWarnings("PMD.AvoidSynchronizedStatement")
@SuppressWarnings({ "PMD.AvoidSynchronizedStatement",
"PMD.AvoidDuplicateLiterals" })
public void onMonitorCommand(MonitorCommand event) throws IOException {
// Check prerequisites
if (!monitorReady && !(event.command() instanceof QmpCapabilities)) {
@ -205,14 +196,22 @@ public class QemuMonitor extends QemuConnector {
+ " cannot send powerdown command");
return;
}
// We have a connection to Qemu, attempt ACPI shutdown.
// We have a connection to Qemu, attempt ACPI shutdown if time left
powerdownStartedAt = event.associated(Instant.class).orElseGet(() -> {
var now = Instant.now();
event.setAssociated(Instant.class, now);
return now;
});
if (powerdownStartedAt.plusSeconds(powerdownTimeout)
.isBefore(Instant.now())) {
return;
}
event.suspendHandling();
suspendedStop = event;
// Attempt powerdown command. If not confirmed, assume
// "hanging" qemu process.
// Send command. If not confirmed, assume "hanging" qemu process.
powerdownTimer = Components.schedule(t -> {
// Powerdown not confirmed
logger.fine(() -> "QMP powerdown command not confirmed");
synchronized (this) {
powerdownTimer = null;
@ -221,14 +220,15 @@ public class QemuMonitor extends QemuConnector {
suspendedStop = null;
}
}
}, Duration.ofSeconds(1));
logger.fine(() -> "Attempting QMP powerdown.");
powerdownStartedAt = Instant.now();
fire(new MonitorCommand(new QmpPowerdown()));
}, Duration.ofSeconds(5));
logger.fine(() -> "Attempting QMP (ACPI) powerdown.");
rep().fire(new MonitorCommand(new QmpPowerdown()));
}
/**
* On powerdown event.
* When the powerdown event is confirmed, wait for termination
* or timeout. Termination is detected by the qemu process exiting
* (see {@link #onProcessExited(ProcessExited)}).
*
* @param event the event
*/
@ -248,6 +248,7 @@ public class QemuMonitor extends QemuConnector {
powerdownTimer = Components.schedule(t -> {
logger.fine(() -> "Powerdown timeout reached.");
synchronized (this) {
powerdownTimer = null;
if (suspendedStop != null) {
suspendedStop.resumeHandling();
suspendedStop = null;
@ -258,6 +259,29 @@ public class QemuMonitor extends QemuConnector {
}
}
/**
* On process exited.
*
* @param event the event
*/
@Handler
@SuppressWarnings("PMD.AvoidSynchronizedStatement")
public void onProcessExited(ProcessExited event) {
if (!event.startedBy().associated(CommandDefinition.class)
.map(cd -> ProcessName.QEMU.equals(cd.name())).orElse(false)) {
return;
}
synchronized (this) {
if (powerdownTimer != null) {
powerdownTimer.cancel();
}
if (suspendedStop != null) {
suspendedStop.resumeHandling();
suspendedStop = null;
}
}
}
/**
* On configure qemu.
*

View file

@ -1,6 +1,6 @@
/*
* VM-Operator
* Copyright (C) 2023,2024 Michael N. Lipp
* Copyright (C) 2023,2025 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
@ -57,6 +57,7 @@ import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import static org.jdrupes.vmoperator.common.Constants.APP_NAME;
import org.jdrupes.vmoperator.common.Constants.DisplaySecret;
import org.jdrupes.vmoperator.runner.qemu.Constants.ProcessName;
import org.jdrupes.vmoperator.runner.qemu.commands.QmpCont;
import org.jdrupes.vmoperator.runner.qemu.commands.QmpReset;
import org.jdrupes.vmoperator.runner.qemu.events.ConfigureQemu;
@ -195,9 +196,6 @@ import org.jgrapes.util.events.WatchFile;
"PMD.CouplingBetweenObjects", "PMD.TooManyFields" })
public class Runner extends Component {
private static final String QEMU = "qemu";
private static final String SWTPM = "swtpm";
private static final String CLOUD_INIT_IMG = "cloudInitImg";
private static final String TEMPLATE_DIR
= "/opt/" + APP_NAME.replace("-", "") + "/templates";
private static final String DEFAULT_TEMPLATE
@ -313,6 +311,7 @@ public class Runner extends Component {
@Handler
public void onConfigurationUpdate(ConfigurationUpdate event) {
event.structured(componentPath()).ifPresent(c -> {
logger.fine(() -> "Runner configuratation updated");
var newConf = yamlMapper.convertValue(c, Configuration.class);
// Add some values from other sources to configuration
@ -350,15 +349,19 @@ public class Runner extends Component {
initialConfig = newConfig;
// Configure
swtpmDefinition = Optional.ofNullable(tplData.get(SWTPM))
.map(d -> new CommandDefinition(SWTPM, d)).orElse(null);
swtpmDefinition
= Optional.ofNullable(tplData.get(ProcessName.SWTPM))
.map(d -> new CommandDefinition(ProcessName.SWTPM, d))
.orElse(null);
logger.finest(() -> swtpmDefinition.toString());
qemuDefinition = Optional.ofNullable(tplData.get(QEMU))
.map(d -> new CommandDefinition(QEMU, d)).orElse(null);
qemuDefinition = Optional.ofNullable(tplData.get(ProcessName.QEMU))
.map(d -> new CommandDefinition(ProcessName.QEMU, d))
.orElse(null);
logger.finest(() -> qemuDefinition.toString());
cloudInitImgDefinition
= Optional.ofNullable(tplData.get(CLOUD_INIT_IMG))
.map(d -> new CommandDefinition(CLOUD_INIT_IMG, d))
= Optional.ofNullable(tplData.get(ProcessName.CLOUD_INIT_IMG))
.map(d -> new CommandDefinition(ProcessName.CLOUD_INIT_IMG,
d))
.orElse(null);
logger.finest(() -> cloudInitImgDefinition.toString());

View file

@ -0,0 +1,41 @@
/*
* VM-Operator
* Copyright (C) 2025 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.runner.qemu.commands;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* A {@link QmpCommand} that powers down the guest.
*/
public class QmpGuestPowerdown extends QmpCommand {
@Override
public JsonNode toJson() {
ObjectNode cmd = mapper.createObjectNode();
cmd.put("execute", "guest-shutdown");
return cmd;
}
@Override
public String toString() {
return "QmpGuestPowerdown()";
}
}