@Override
public void initialize(final StructrServices services, final Properties config)
throws ClassNotFoundException, InstantiationException, IllegalAccessException {
final String taskList = config.getProperty(TASKS, "");
if (taskList != null) {
for (String task : taskList.split("[ \\t]+")) {
String expression = config.getProperty(task.concat(EXPRESSION_SUFFIX));
if (expression != null) {
CronEntry entry = CronEntry.parse(task, expression);
if (entry != null) {
logger.info("Adding cron entry {} for {}", new Object[] {entry, task});
cronEntries.add(entry);
} else {
logger.warn("Unable to parse cron expression for taks {}, ignoring.", task);
}
} else {
logger.warn("No cron expression for task {}, ignoring.", task);
}
}
}
}
@Override
public void run() {
final Services servicesInstance = Services.getInstance();
// wait for service layer to be initialized
while (!servicesInstance.isInitialized()) {
try {
Thread.sleep(1000);
} catch (InterruptedException iex) {
}
}
// sleep 5 seconds more
try {
Thread.sleep(5000);
} catch (InterruptedException iex) {
}
while (doRun) {
// sleep for some time
try {
Thread.sleep(GRANULARITY_UNIT.toMillis(GRANULARITY));
} catch (InterruptedException iex) {
}
for (CronEntry entry : cronEntries) {
if (entry.getDelayToNextExecutionInMillis() < GRANULARITY_UNIT.toMillis(GRANULARITY)) {
final String taskClassName = entry.getName();
final Class taskClass = instantiate(taskClassName);
try {
if (taskClass != null) {
Task task = (Task) taskClass.newInstance();
logger.debug("Starting task {}", taskClassName);
StructrApp.getInstance().processTasks(task);
} else {
try (final Tx tx = StructrApp.getInstance().tx()) {
// check for schema method with the given name
Actions.call(taskClassName, Collections.EMPTY_MAP);
tx.success();
}
}
} catch (Throwable t) {
logger.warn(
"Exception while executing cron task {}: {}", taskClassName, t.getMessage());
}
}
}
}
}
