content: /*
   * Copyright 2012-2021 Aerospike, Inc.
   *
   * Portions may be licensed to Aerospike, Inc. under one or more contributor
   * license agreements WHICH ARE COMPATIBLE WITH THE APACHE LICENSE, VERSION 2.0.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not
   * use this file except in compliance with the License. You may obtain a copy of
   * the License at http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations under
   * the License.
   */
  package com.aerospike.client.lua;
  
  import java.util.concurrent.BlockingQueue;
  
  import org.luaj.vm2.LuaString;
  import org.luaj.vm2.LuaUserdata;
  import org.luaj.vm2.LuaValue;
  
  import com.aerospike.client.Log;
  
  public final class LuaInputStream extends LuaUserdata implements LuaStream {
  
  	private final BlockingQueue<LuaValue> queue;
  
  	public LuaInputStream(BlockingQueue<LuaValue> queue) {
  		super(queue);
  		this.queue = queue;
  	}
  
  	public LuaValue read() {
  		try {
  			return queue.take();
  		}
  		catch (InterruptedException ie) {
  			if (Log.debugEnabled()) {
  				Log.debug("LuaInputStream take interrupted");
  			}
  			return LuaValue.NIL;
  		}
  	}
  
  	@Override
  	public void write(LuaValue value) {
  		throw new RuntimeException("LuaInputStream is not writeable.");
  	}
  
  	@Override
  	public boolean readable() {
  		return true;
  	}
  
  	@Override
  	public boolean writeable() {
  		return false;
  	}
  
  	@Override
  	public LuaValue toLuaString() {
  		return LuaString.valueOf(LuaInputStream.class.getName());
  	}
  }
  