Orchestration.java

// Orchestration based on compose
private void method2() {
	// Create first step
	Future<String> future1 = readFile();

	// Define future1 composition
	future1.compose(s1 -> {
		Future<String> future2 = writeFile(future1.result());

		// Define future2 composition
		future2.compose(s2 -> {
			Future<String> future3 = copyFile(future2.result());

			// Because the future3 is the last, we define here a handler
			future3.setHandler(handler -> {
				if (handler.succeeded()) {
					System.out.println(handler.result());
				} else {
					// Manage doSmthg3 errors
				}
			});
		} , Future.future().setHandler(handler -> {
			// Manage doSmthg2 errors
		}));
	} , Future.future().setHandler(handler -> {
		// Manage doSmthg1 errors
	}));
}