/** Reports success or failure of step, outside synchronization block to avoid deadlocks. */
void report() {
if (error != null) {
context.onFailure(error);
} else {
context.onSuccess(result);
}
}
@Override
public final boolean start(StepContext context) {
try {
FilePath ws = context.get(FilePath.class);
assert ws != null
: context.getClass() + " failed to provide a FilePath even though one was requested";
String remote = ws.getRemote();
String node = null;
for (Computer c : Jenkins.getInstance().getComputers()) {
if (c.getChannel() == ws.getChannel()) {
node = c.getName();
break;
}
}
if (node == null) {
throw new IllegalStateException("no known node for " + ws);
}
register(
context,
task()
.launch(
context.get(EnvVars.class),
ws,
context.get(Launcher.class),
context.get(TaskListener.class)),
node,
remote);
} catch (Exception x) {
context.onFailure(x);
}
return false;
// TODO implement stop, however it is design (will need to call Controller.stop)
}
/** Checks for progress or completion of the external task. */
CheckResult check() {
try {
Computer c = Jenkins.getInstance().getComputer(node);
if (c == null) {
LOGGER.log(Level.FINE, "no such computer {0}", node);
return CheckResult.NO_CHANGE;
}
if (c.isOffline()) {
LOGGER.log(Level.FINE, "{0} is offline", node);
return CheckResult.NO_CHANGE;
}
FilePath ws = new FilePath(c.getChannel(), remote);
if (!ws.isDirectory()) {
error = new AbortException("missing workspace " + remote + " on " + node);
return CheckResult.DONE;
}
TaskListener listener = context.get(TaskListener.class);
boolean wrote = controller.writeLog(ws, listener.getLogger());
Integer exitCode = controller.exitStatus(ws);
if (exitCode == null) {
LOGGER.log(Level.FINE, "still running in {0} on {1}", new Object[] {remote, node});
return wrote ? CheckResult.UPDATED : CheckResult.NO_CHANGE;
} else if (exitCode == 0) {
result = exitCode; // TODO could add an option to have this be text output from command
} else {
error = new AbortException("script returned exit code " + exitCode);
}
controller.cleanup(ws);
return CheckResult.DONE;
} catch (IOException x) {
error = x;
} catch (InterruptedException x) {
error = x;
}
return CheckResult.DONE;
}