public void execute() throws MojoExecutionException, MojoFailureException {
// set up derived paths
forgeDir = new File(outputDir, "forge");
jarsDir = new File(forgeDir, "mcp/jars");
// check whether the artifact is already installed
if (reinstall) {
getLog().info("reinstall flag set; skipping availability check");
} else {
getLog().info("attempting to resolve Forge artifacts");
if (null != resolveApiArtifact() && null != resolveToolsArtifact()) {
getLog().info("artifacts are available; skipping installation");
return;
} else {
getLog().info("artifacts not available; continuing installation");
}
}
if (!noExtract) downloadAndExtract();
if (!forgeDir.isDirectory())
throw new MojoFailureException("distribution did not extract to the excpected directory");
// run the install script
if (!noInstall) {
getLog().info("running install script");
try {
final PythonLauncher launcher = new PythonLauncher(getLog(), forgeDir);
final int result = launcher.execute(new File(forgeDir, "install.py"));
if (0 != result) {
throw new MojoFailureException("install script returned " + result);
}
} catch (IOException caught) {
throw new MojoFailureException("error calling install script", caught);
}
}
// load Minecraft's POM
final Model minecraft = loadModelFromResouce("minecraft.pom");
minecraft.setVersion(getMinecraftVersion());
// figure out Minecraft's dependencies
{
getLog().info("detecting Minecraft dependencies");
final Artifact lwjgl =
locator.findVersion(new File(jarsDir, "bin/lwjgl.jar"), "org.lwjgl.lwjgl", "lwjgl");
final Artifact lwjgl_util =
new DefaultArtifact("org.lwjgl.lwjgl", "lwjgl_util", "jar", lwjgl.getVersion());
// don't include jinput.jar
// it's a transitive dependency from LWJGL
getLog().info("resolving Minecraft dependencies");
for (Artifact target : new Artifact[] {lwjgl, lwjgl_util}) {
getLog().info(" " + target);
final Artifact resolved = resolveRemoteArtifact(target);
if (null == resolved)
throw new MojoFailureException("unable to resolve artifact " + target);
minecraft.addDependency(artifactToDependency(resolved));
}
}
// install Minecraft JAR
installJar(minecraft, new File(jarsDir, "bin/minecraft.jar"));
// figure out Forge's dependencies
// using a Map of coordinates => artifact for deduplication
// can't use a Set, Artifact#equals() doesn't behave
final Map<String, Dependency> forgeDeps = new HashMap<String, Dependency>();
for (File file : (new File(forgeDir, "mcp/lib")).listFiles()) {
final Artifact artifact = locator.locate(file);
if (null == artifact)
throw new MojoFailureException("no artifact found for dependency " + file.getName());
forgeDeps.put(artifact.toString(), artifactToDependency(artifact));
}
// add Minecraft client to Forge dependencies
{
final Artifact artifact =
new DefaultArtifact("net.minecraft", "minecraft", "jar", getMinecraftVersion());
forgeDeps.put(artifact.toString(), artifactToDependency(artifact));
}
// extract the Forge POM
final File pom = new File(forgeDir, "pom.xml");
{
final Model model = loadModelFromResouce("mcforge.pom");
model.setVersion(getApiDependency().getVersion());
model.setDependencies(new ArrayList<Dependency>(forgeDeps.values()));
writeModelToFile(model, pom);
}
// execute a build from the Forge POM
getLog().info("executing POM to package and install artifacts");
try {
final MavenExecutionRequest request = new DefaultMavenExecutionRequest();
requestPopulator.populateDefaults(request);
request.setPom(pom);
request.setGoals(Collections.singletonList("install"));
final MavenExecutionResult result = maven.execute(request);
// check for startup exceptions
if (result.hasExceptions())
throw new MojoFailureException(
"failed to package and install artifacts", result.getExceptions().get(0));
// check for build failure
final BuildSummary summary = result.getBuildSummary(result.getProject());
if (summary instanceof BuildFailure) {
throw new MojoFailureException(
"failed to package and install artifacts", ((BuildFailure) summary).getCause());
}
} catch (MojoFailureException caught) {
throw caught;
} catch (Exception caught) {
throw new MojoFailureException("failed to package and install artifacts", caught);
}
}
