public DaemonStartupInfo startDaemon() {
String daemonUid = UUID.randomUUID().toString();
GradleInstallation gradleInstallation = CurrentGradleInstallation.get();
ModuleRegistry registry = new DefaultModuleRegistry(gradleInstallation);
ClassPath classpath;
List<File> searchClassPath;
if (gradleInstallation == null) {
// When not running from a Gradle distro, need runtime impl for launcher plus the search path
// to look for other modules
classpath = new DefaultClassPath();
for (Module module : registry.getModule("gradle-launcher").getAllRequiredModules()) {
classpath = classpath.plus(module.getClasspath());
}
searchClassPath = registry.getAdditionalClassPath().getAsFiles();
} else {
// When running from a Gradle distro, only need launcher jar. The daemon can find everything
// from there.
classpath = registry.getModule("gradle-launcher").getImplementationClasspath();
searchClassPath = Collections.emptyList();
}
if (classpath.isEmpty()) {
throw new IllegalStateException(
"Unable to construct a bootstrap classpath when starting the daemon");
}
versionValidator.validate(daemonParameters);
List<String> daemonArgs = new ArrayList<String>();
daemonArgs.add(daemonParameters.getEffectiveJvm().getJavaExecutable().getAbsolutePath());
List<String> daemonOpts = daemonParameters.getEffectiveJvmArgs();
daemonArgs.addAll(daemonOpts);
daemonArgs.add("-cp");
daemonArgs.add(CollectionUtils.join(File.pathSeparator, classpath.getAsFiles()));
if (Boolean.getBoolean("org.gradle.daemon.debug")) {
daemonArgs.add("-Xdebug");
daemonArgs.add("-Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005");
}
LOGGER.debug("Using daemon args: {}", daemonArgs);
daemonArgs.add(GradleDaemon.class.getName());
// Version isn't used, except by a human looking at the output of jps.
daemonArgs.add(GradleVersion.current().getVersion());
// Serialize configuration to daemon via the process' stdin
ByteArrayOutputStream serializedConfig = new ByteArrayOutputStream();
FlushableEncoder encoder =
new KryoBackedEncoder(new EncodedStream.EncodedOutput(serializedConfig));
try {
encoder.writeString(daemonParameters.getGradleUserHomeDir().getAbsolutePath());
encoder.writeString(daemonDir.getBaseDir().getAbsolutePath());
encoder.writeSmallInt(daemonParameters.getIdleTimeout());
encoder.writeString(daemonUid);
encoder.writeSmallInt(daemonOpts.size());
for (String daemonOpt : daemonOpts) {
encoder.writeString(daemonOpt);
}
encoder.writeSmallInt(searchClassPath.size());
for (File file : searchClassPath) {
encoder.writeString(file.getAbsolutePath());
}
encoder.flush();
} catch (IOException e) {
throw new UncheckedIOException(e);
}
ByteArrayInputStream stdInput = new ByteArrayInputStream(serializedConfig.toByteArray());
DaemonStartupInfo daemonInfo = startProcess(daemonArgs, daemonDir.getVersionedDir(), stdInput);
listener.daemonStarted(daemonInfo);
return daemonInfo;
}
