/**
* Starts commands and blocks current thread until all processes are in state {@link
* State#STARTED}.
*
* @throws java.lang.IllegalArgumentException if commands list is empty
* @throws java.lang.IllegalStateException if already started or if at least one process failed to
* start. In this case all processes are terminated. No need to execute {@link #stop()}
*/
public void start(List<JavaCommand> commands) {
if (commands.isEmpty()) {
throw new IllegalArgumentException("At least one command is required");
}
if (lifecycle.getState() != State.INIT) {
throw new IllegalStateException("Can not start multiple times");
}
// intercepts CTRL-C
Runtime.getRuntime().addShutdownHook(shutdownHook);
// start watching for restart requested by child process
restartWatcher.start();
javaCommands = commands;
startProcesses();
}
public State getState() {
return lifecycle.getState();
}