private void checkStartup( Map<String, ServiceData> map, List<ServiceData> start, ServiceData sd, Set<ServiceData> cyclic) { if (sd.after.isEmpty() || start.contains(sd)) return; if (cyclic.contains(sd)) { reporter.error("Cyclic dependency for " + sd.name); return; } cyclic.add(sd); for (String dependsOn : sd.after) { if (dependsOn.equals("boot")) continue; ServiceData deps = map.get(dependsOn); if (deps == null) { reporter.error("No such service " + dependsOn + " but " + sd.name + " depends on it"); } else { checkStartup(map, start, deps, cyclic); } } start.add(sd); }