Example usage for org.apache.zookeeper.recipes.lock ZooKeeperOperation ZooKeeperOperation

Introduction

In this page you can find the example usage for org.apache.zookeeper.recipes.lock ZooKeeperOperation ZooKeeperOperation.

Prototype

ZooKeeperOperation

Source Link

Usage

From source file:com.zookeeper.lyt.lock.ProtocolSupport.java

License:Apache License

/**
 * Ensures that the given path exists with the given data, ACL and flags
 * @param path/* w w w  .  j  a  v  a  2 s  .c om*/
 * @param acl
 * @param flags
 */
protected void ensureExists(final String path, final byte[] data, final List<ACL> acl, final CreateMode flags) {
    try {
        retryOperation(new ZooKeeperOperation() {
            public boolean execute() throws KeeperException, InterruptedException {
                Stat stat = zookeeper.exists(path, false);
                if (stat != null) {
                    return true;
                }
                zookeeper.create(path, data, acl, flags);
                return true;
            }
        });
    } catch (KeeperException e) {
        LOG.warn("Caught: " + e, e);
    } catch (InterruptedException e) {
        LOG.warn("Caught: " + e, e);
    }
}

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