How to use

lock

method

in

org.apache.ignite.internal.processors.cache.IgniteInternalCache

/** {@inheritDoc} */
@Override public boolean lock(Object key, long timeout) throws IgniteCheckedException {
  return delegate.get().lock(keyTransformer.transform(key), timeout);
}

/** {@inheritDoc} */
@Override public boolean lock(K key, long timeout)
  throws IgniteCheckedException {
  CacheOperationContext prev = gate.enter(opCtx);
  try {
    return delegate.lock(key, timeout);
  }
  finally {
    gate.leave(prev);
  }
}

  @Override public void run() {
    while (run) {
      TreeMap<Integer, String> vals = generateValues(keys);
      try {
        // Explicit lock.
        cache.lock(vals.firstKey(), 0);
        try {
          // Put or remove.
          if (ThreadLocalRandom.current().nextDouble(1) < 0.65)
            cache.putAll(vals);
          else
            cache.removeAll(vals.keySet());
        }
        catch (IgniteCheckedException e) {
          U.error(log(), "Failed cache operation.", e);
        }
        finally {
          cache.unlock(vals.firstKey());
        }
        U.sleep(100);
      }
      catch (Throwable e){
        U.error(log(), "Failed unlock.", e);
        err = e;
        return;
      }
    }
  }
};

/** {@inheritDoc} */
@Override public boolean lock(K key, long timeout)
  throws IgniteCheckedException {
  CacheOperationContext prev = gate.enter(opCtx);
  try {
    return delegate.lock(key, timeout);
  }
  finally {
    gate.leave(prev);
  }
}