public Optional getLock()

in src/main/java/com/amazonaws/services/dynamodbv2/AmazonDynamoDBLockClient.java [952:975]

• 17 lines of code
• 4 McCabe index (conditional complexity)

    public Optional<LockItem> getLock(final String key, final Optional<String> sortKey) {
        Objects.requireNonNull(sortKey, "Sort Key must not be null (can be Optional.empty())");
        final LockItem localLock = this.locks.get(key + sortKey.orElse(""));
        if (localLock != null) {
            return Optional.of(localLock);
        }
        final Optional<LockItem> lockItem =
            this.getLockFromDynamoDB(new GetLockOptions.GetLockOptionsBuilder(key).withSortKey(sortKey.orElse(null)).withDeleteLockOnRelease(false).build());

        if (lockItem.isPresent()) {
            if (lockItem.get().isReleased()) {
                // Return empty if a lock was released but still left in the table
                return Optional.empty();
            } else {
                /*
                 * Clear out the record version number so that the caller cannot accidentally perform updates on this lock (since
                 * the caller has not acquired the lock)
                 */
                lockItem.get().updateRecordVersionNumber("", 0, lockItem.get().getLeaseDuration());
            }
        }

        return lockItem;
    }