@Override
public ILock acquireLock(final ILockKey lockKey, final String user) throws LockException {
return storage.write(
storeProvider -> {
LockStore.Mutable lockStore = storeProvider.getLockStore();
Optional<ILock> existingLock = lockStore.fetchLock(lockKey);
if (existingLock.isPresent()) {
throw new LockException(
String.format(
"Operation for: %s is already in progress. Started at: %s. Current owner: %s.",
formatLockKey(lockKey),
new Date(existingLock.get().getTimestampMs()).toString(),
existingLock.get().getUser()));
}
ILock lock =
ILock.build(
new Lock()
.setKey(lockKey.newBuilder())
.setToken(tokenGenerator.createNew().toString())
.setTimestampMs(clock.nowMillis())
.setUser(user));
lockStore.saveLock(lock);
return lock;
});
}
