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);
}
/**
* This is called when JPM runs in the background to start jobs
*
* @throws Exception
*/
public void daemon() throws Exception {
Runtime.getRuntime()
.addShutdownHook(
new Thread("Daemon shutdown") {
public void run() {
for (Service service : startedByDaemon) {
try {
reporter.error("Stopping " + service);
service.stop();
reporter.error("Stopped " + service);
} catch (Exception e) {
// Ignore
}
}
}
});
List<ServiceData> services = getServices();
Map<String, ServiceData> map = new HashMap<String, ServiceData>();
for (ServiceData d : services) {
map.put(d.name, d);
}
List<ServiceData> start = new ArrayList<ServiceData>();
Set<ServiceData> set = new HashSet<ServiceData>();
for (ServiceData sd : services) {
checkStartup(map, start, sd, set);
}
if (start.isEmpty()) reporter.warning("No services to start");
for (ServiceData sd : start) {
try {
Service service = getService(sd.name);
reporter.trace("Starting " + service);
String result = service.start();
if (result != null) reporter.error("Started error " + result);
else startedByDaemon.add(service);
reporter.trace("Started " + service);
} catch (Exception e) {
reporter.error("Cannot start daemon %s, due to %s", sd.name, e);
}
}
while (true) {
for (Service sd : startedByDaemon) {
try {
if (!sd.isRunning()) {
reporter.error("Starting due to failure " + sd);
String result = sd.start();
if (result != null) reporter.error("Started error " + result);
}
} catch (Exception e) {
reporter.error("Cannot start daemon %s, due to %s", sd, e);
}
}
Thread.sleep(10000);
}
}
/**
* Turn the shas into a readable form
*
* @param dependencies
* @return
* @throws Exception
*/
public List<?> toString(List<byte[]> dependencies) throws Exception {
List<String> out = new ArrayList<String>();
for (byte[] dependency : dependencies) {
ArtifactData data = get(dependency);
if (data == null) out.add(Hex.toHexString(dependency));
else {
out.add(Strings.display(data.name, Hex.toHexString(dependency)));
}
}
return out;
}
public List<CommandData> getCommands(File commandDir) throws Exception {
List<CommandData> result = new ArrayList<CommandData>();
if (!commandDir.exists()) {
return result;
}
for (File f : commandDir.listFiles()) {
CommandData data = getData(CommandData.class, f);
if (data != null) result.add(data);
}
return result;
}
public List<ServiceData> getServices(File serviceDir) throws Exception {
List<ServiceData> result = new ArrayList<ServiceData>();
if (!serviceDir.exists()) {
return result;
}
for (File sdir : serviceDir.listFiles()) {
File dataFile = new File(sdir, "data");
ServiceData data = getData(ServiceData.class, dataFile);
result.add(data);
}
return result;
}
private String listSupportFiles(List<File> toDelete) throws Exception {
Formatter f = new Formatter();
try {
if (toDelete == null) {
toDelete = new ArrayList<File>();
}
int precount = toDelete.size();
File confFile = IO.getFile(platform.getConfigFile()).getCanonicalFile();
if (confFile.exists()) {
f.format(" * %s \t0 Config file%n", confFile);
toDelete.add(confFile);
}
String result = (toDelete.size() > precount) ? f.toString() : null;
return result;
} finally {
f.close();
}
}
private String listFiles(final File cache, List<File> toDelete) throws Exception {
boolean stopServices = false;
if (toDelete == null) {
toDelete = new ArrayList<File>();
} else {
stopServices = true;
}
int count = 0;
Formatter f = new Formatter();
f.format(" - Cache:%n * %s%n", cache.getCanonicalPath());
f.format(" - Commands:%n");
for (CommandData cdata : getCommands(new File(cache, COMMANDS))) {
f.format(" * %s \t0 handle for \"%s\"%n", cdata.bin, cdata.name);
toDelete.add(new File(cdata.bin));
count++;
}
f.format(" - Services:%n");
for (ServiceData sdata : getServices(new File(cache, SERVICE))) {
if (sdata != null) {
f.format(" * %s \t0 service directory for \"%s\"%n", sdata.sdir, sdata.name);
toDelete.add(new File(sdata.sdir));
File initd = platform.getInitd(sdata);
if (initd != null && initd.exists()) {
f.format(" * %s \t0 init.d file for \"%s\"%n", initd.getCanonicalPath(), sdata.name);
toDelete.add(initd);
}
if (stopServices) {
Service s = getService(sdata);
try {
s.stop();
} catch (Exception e) {
}
}
count++;
}
}
f.format("%n");
String result = (count > 0) ? f.toString() : null;
f.close();
return result;
}
public List<Revision> filter(Collection<Revision> list, EnumSet<Library.Phase> phases) {
List<Revision> filtered = new ArrayList<Library.Revision>();
for (Revision r : list) if (phases.contains(r.phase)) filtered.add(r);
return filtered;
}