package org.arquillian.cube.impl.containerless;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.logging.Logger;
import org.arquillian.cube.spi.Cube;
import org.arquillian.cube.spi.CubeRegistry;
import org.arquillian.cube.spi.event.CreateCube;
import org.arquillian.cube.spi.event.CubeControlEvent;
import org.arquillian.cube.spi.event.DestroyCube;
import org.arquillian.cube.spi.event.StartCube;
import org.arquillian.cube.spi.event.StopCube;
import org.arquillian.cube.spi.metadata.HasPortBindings;
import org.arquillian.cube.spi.metadata.HasPortBindings.PortAddress;
import org.arquillian.cube.spi.metadata.IsBuildable;
import org.jboss.arquillian.container.spi.client.container.DeployableContainer;
import org.jboss.arquillian.container.spi.client.container.DeploymentException;
import org.jboss.arquillian.container.spi.client.container.LifecycleException;
import org.jboss.arquillian.container.spi.client.protocol.ProtocolDescription;
import org.jboss.arquillian.container.spi.client.protocol.metadata.HTTPContext;
import org.jboss.arquillian.container.spi.client.protocol.metadata.ProtocolMetaData;
import org.jboss.arquillian.container.spi.client.protocol.metadata.Servlet;
import org.jboss.arquillian.core.api.Event;
import org.jboss.arquillian.core.api.Instance;
import org.jboss.arquillian.core.api.annotation.Inject;
import org.jboss.shrinkwrap.api.Archive;
import org.jboss.shrinkwrap.api.Filters;
import org.jboss.shrinkwrap.api.GenericArchive;
import org.jboss.shrinkwrap.api.exporter.TarExporter;
import org.jboss.shrinkwrap.api.exporter.ZipExporter;
import org.jboss.shrinkwrap.descriptor.api.Descriptor;
public class ContainerlessDockerDeployableContainer implements DeployableContainer<ContainerlessConfiguration> {
private static final String DOCKERFILE_TEMPLATE = "DockerfileTemplate";
private static final Logger log = Logger.getLogger(ContainerlessDockerDeployableContainer.class.getName());
private ContainerlessConfiguration configuration;
@Inject
private Instance<CubeRegistry> cubeRegistryInstance;
@Inject
private Event<CubeControlEvent> controlEvent;
@Override
public Class<ContainerlessConfiguration> getConfigurationClass() {
return ContainerlessConfiguration.class;
}
@Override
public void setup(ContainerlessConfiguration configuration) {
this.configuration = configuration;
}
@Override
public void start() throws LifecycleException {
// should be done at deployment time.
}
@Override
public void stop() throws LifecycleException {
// should be done at undeployment time.
}
@Override
public ProtocolDescription getDefaultProtocol() {
return new ProtocolDescription("Servlet 3.0");
}
@Override
public ProtocolMetaData deploy(Archive<?> archive) throws DeploymentException {
final CubeRegistry cubeRegistry = cubeRegistryInstance.get();
Cube<?> cube = resolveMainCube(cubeRegistry);
if (cube.hasMetadata(IsBuildable.class)) {
File location = new File(cube.getMetadata(IsBuildable.class).getTemplatePath());
if (location.isDirectory()) {
//Because ShrinkWrap may create different jar files depending on what we are testing in this case
//we need a template which is the responsible to copy the jar to desired location
try {
createDockerfileFromTemplate(archive, location);
// fire events as usually.
controlEvent.fire(new CreateCube(cube));
controlEvent.fire(new StartCube(cube));
return createProtocolMetadata(cube, archive);
} catch (FileNotFoundException e) {
throw new IllegalArgumentException("Containerless Docker container requires a file named "
+ DOCKERFILE_TEMPLATE);
}
} else {
throw new IllegalArgumentException(
"Dockerfile Template of containerless Docker container must be in a directory.");
}
} else {
throw new IllegalArgumentException(
"Containerless container should be built using a Dockerfile, and no templatePath property found for container.");
}
}
private Cube<?> resolveMainCube(CubeRegistry cubeRegistry) {
Cube<?> cube = null;
if (this.configuration.isContainerlessDockerSet()) {
String containerlessDocker = this.configuration.getContainerlessDocker();
cube = cubeRegistry.getCube(containerlessDocker);
if (cube == null) {
// Is there a way to ignore it? Or we should throw an exception?
throw new IllegalArgumentException("No Containerless Docker container configured in extension with id "
+ containerlessDocker);
}
} else {
List<Cube<?>> cubes = cubeRegistry.getCubes();
if (cubes.size() == 1) {
cube = cubes.get(0);
} else {
throw new IllegalArgumentException(
"More than one container eligible for being the main instance. Use containerlessDocker property to set one.");
}
}
return cube;
}
private void createDockerfileFromTemplate(Archive<?> archive, File location)
throws FileNotFoundException {
File templateDockerfile = new File(location, DOCKERFILE_TEMPLATE);
String deployableFilename = archive.getName();
Map<String, String> values = new HashMap<String, String>();
values.put("deployableFilename", deployableFilename);
String templateContent = IOUtil.asStringPreservingNewLines(new FileInputStream(templateDockerfile));
//But because deployable file is created by shrinkwrap we need to replace the deploy file name to the one created.
String dockerfileContent = IOUtil.replacePlaceholders(templateContent, values);
File dockerfile = new File(location, "Dockerfile");
if (dockerfile.exists()) {
log.fine(
"Dockerfile file is already found in current build directory and is going to be renamed to Dockerfile.old.");
dockerfile.renameTo(new File(location, "Dockerfile.old"));
dockerfile = new File(location, "Dockerfile");
}
dockerfile.deleteOnExit();
//The content is written to real Dockerfile which will be used during built time.
IOUtil.toFile(dockerfileContent, dockerfile);
File deployableOutputFile = new File(location, deployableFilename);
deployableOutputFile.deleteOnExit();
//file is saved to Dockerfile directory so can be copied inside image.
if (archive instanceof GenericArchive) {
//In case of generic archives a tgz exporter should be used so Docker can uncompress it automatically.
archive.as(TarExporter.class).exportTo(deployableOutputFile, true);
} else {
archive.as(ZipExporter.class).exportTo(deployableOutputFile, true);
}
}
private ProtocolMetaData createProtocolMetadata(Cube<?> cube, Archive<?> deployment) {
final HasPortBindings portBindings = cube.getMetadata(HasPortBindings.class);
if (portBindings == null) {
throw new IllegalArgumentException("Container has no port bindings");
}
//ProtocolMetadataUpdater will adjust the port to the exposed ones.
HTTPContext httpContext = null;
if (this.configuration.isEmbeddedPortSet()) {
httpContext = new HTTPContext(portBindings.getContainerIP(), this.configuration.getEmbeddedPort());
} else {
final Set<Integer> boundPorts = portBindings.getBoundPorts();
if (boundPorts.size() == 1) {
final int port = boundPorts.iterator().next();
final PortAddress portMapping = portBindings.getMappedAddress(port);
if (portMapping == null) {
throw new IllegalArgumentException(String.format("No port mapping found for port %s", port));
}
httpContext = new HTTPContext(portMapping.getIP(), portMapping.getPort());
} else {
throw new IllegalArgumentException(
"More than one port binding eligible. Set one using embeddedPort property");
}
}
// TEMP HACK to allow in-container testing without communicating with the Server mgm api
if (containsArquillianServletProtocol(deployment)) {
addArquillianTestServlet(deployment, httpContext);
}
return new ProtocolMetaData().addContext(httpContext);
}
private boolean containsArquillianServletProtocol(Archive<?> deployment) {
return deployment.getContent(Filters.include(".*arquillian-protocol.jar")).size() > 0;
}
private void addArquillianTestServlet(Archive<?> deployment, HTTPContext httpContext) {
httpContext.add(new Servlet("ArquillianServletRunner", extractContextName(deployment)));
}
private String extractContextName(Archive<?> deployment) {
String name = deployment.getName();
name = name.substring(0, name.lastIndexOf("."));
return name;
}
@Override
public void undeploy(Archive<?> archive) throws DeploymentException {
final CubeRegistry cubeRegistry = cubeRegistryInstance.get();
Cube<?> cube = resolveMainCube(cubeRegistry);
if (cube != null) {
controlEvent.fire(new StopCube(cube));
controlEvent.fire(new DestroyCube(cube));
}
}
@Override
public void deploy(Descriptor descriptor) throws DeploymentException {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public void undeploy(Descriptor descriptor) throws DeploymentException {
throw new UnsupportedOperationException("Not implemented");
}
}