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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.admin.container;
import com.yahoo.config.provision.DockerImage;
import com.yahoo.vespa.hosted.node.admin.component.TaskContext;
import com.yahoo.vespa.hosted.node.admin.container.image.Image;
import com.yahoo.vespa.hosted.node.admin.nodeagent.ContainerData;
import com.yahoo.vespa.hosted.node.admin.nodeagent.NodeAgentContext;
import com.yahoo.vespa.hosted.node.admin.task.util.process.CommandResult;
import java.time.Duration;
import java.time.Instant;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;
import java.util.stream.Collectors;
/**
* @author mpolden
*/
public class ContainerEngineMock implements ContainerEngine {
private final Map<ContainerName, Container> containers = new ConcurrentHashMap<>();
private final Map<String, ImageDownload> images = new ConcurrentHashMap<>();
private boolean asyncImageDownload = false;
public ContainerEngineMock asyncImageDownload(boolean enabled) {
this.asyncImageDownload = enabled;
return this;
}
public ContainerEngineMock completeDownloadOf(DockerImage image) {
String imageId = image.asString();
ImageDownload download;
while ((download = images.get(imageId)) == null);
download.complete();
return this;
}
public ContainerEngineMock setImages(List<Image> images) {
this.images.clear();
for (var image : images) {
ImageDownload imageDownload = new ImageDownload(image);
imageDownload.complete();
this.images.put(image.id(), imageDownload);
}
return this;
}
public ContainerEngineMock addContainers(List<Container> containers) {
for (var container : containers) {
if (this.containers.containsKey(container.name())) {
throw new IllegalArgumentException("Container " + container.name() + " already exists");
}
this.containers.put(container.name(), container);
}
return this;
}
public ContainerEngineMock addContainer(Container container) {
return addContainers(List.of(container));
}
@Override
public void createContainer(NodeAgentContext context, ContainerData containerData, ContainerResources containerResources) {
addContainer(createContainer(context, PartialContainer.State.created, containerResources));
}
@Override
public void startContainer(NodeAgentContext context) {
Container container = requireContainer(context.containerName(), PartialContainer.State.created);
Container newContainer = createContainer(context, PartialContainer.State.running, container.resources());
containers.put(newContainer.name(), newContainer);
}
@Override
public void removeContainer(TaskContext context, PartialContainer container) {
requireContainer(container.name());
containers.remove(container.name());
}
@Override
public void updateContainer(NodeAgentContext context, ContainerId containerId, ContainerResources containerResources) {
Container container = requireContainer(context.containerName());
containers.put(container.name(), new Container(containerId, container.name(), container.createdAt(), container.state(),
container.imageId(), container.image(),
container.labels(), container.pid(),
container.conmonPid(), container.hostname(),
containerResources, container.networks(),
container.managed()));
}
@Override
public Optional<Container> getContainer(NodeAgentContext context) {
return Optional.ofNullable(containers.get(context.containerName()));
}
@Override
public List<PartialContainer> listContainers(TaskContext context) {
return List.copyOf(containers.values());
}
@Override
public String networkInterface(NodeAgentContext context) {
return "eth0";
}
@Override
public CommandResult executeAsRoot(NodeAgentContext context, Duration timeout, String... command) {
return new CommandResult(null, 0, "");
}
@Override
public CommandResult executeInNetworkNamespace(NodeAgentContext context, String... command) {
return new CommandResult(null, 0, "");
}
@Override
public void pullImage(TaskContext context, DockerImage image, RegistryCredentials registryCredentials) {
String imageId = image.asString();
ImageDownload imageDownload = images.computeIfAbsent(imageId, (ignored) -> new ImageDownload(new Image(imageId, List.of(imageId))));
if (!asyncImageDownload) {
imageDownload.complete();
}
imageDownload.awaitCompletion();
}
@Override
public boolean hasImage(TaskContext context, DockerImage image) {
ImageDownload download = images.get(image.asString());
return download != null && download.isComplete();
}
@Override
public void removeImage(TaskContext context, String id) {
images.remove(id);
}
@Override
public List<Image> listImages(TaskContext context) {
return images.values().stream()
.filter(ImageDownload::isComplete)
.map(ImageDownload::image)
.collect(Collectors.toUnmodifiableList());
}
private Container requireContainer(ContainerName name) {
return requireContainer(name, null);
}
private Container requireContainer(ContainerName name, PartialContainer.State wantedState) {
Container container = containers.get(name);
if (container == null) throw new IllegalArgumentException("No such container: " + name);
if (wantedState != null && container.state() != wantedState) throw new IllegalArgumentException("Container is " + container.state() + ", wanted " + wantedState);
return container;
}
public Container createContainer(NodeAgentContext context, PartialContainer.State state, ContainerResources containerResources) {
return new Container(new ContainerId("id-of-" + context.containerName()),
context.containerName(),
Instant.EPOCH,
state,
"image-id",
context.node().wantedDockerImage().get(),
Map.of(),
41,
42,
context.hostname().value(),
containerResources,
List.of(),
true);
}
private static class ImageDownload {
private final Image image;
private final CountDownLatch done = new CountDownLatch(1);
ImageDownload(Image image) {
this.image = Objects.requireNonNull(image);
}
Image image() {
return image;
}
boolean isComplete() {
return done.getCount() == 0;
}
void complete() {
done.countDown();
}
void awaitCompletion() {
try {
done.await();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
}
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