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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.datatorrent.stram.stream;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.datatorrent.stram.engine.AbstractReservoir;
import com.datatorrent.stram.engine.Stream;
import com.datatorrent.stram.engine.StreamContext;
import com.datatorrent.stram.engine.SweepableReservoir;
import com.datatorrent.stram.tuple.Tuple;

/**
 *
 * When data exchange is needed between 2 operators deployed in the same container, they are connected using a
 * blocking queue; The implementation of such a blocking queue is InlineStream.
* * @since 0.3.2 */ public class InlineStream implements Stream { private int count; private AbstractReservoir reservoir; public InlineStream(int capacity) { reservoir = AbstractReservoir.newReservoir("InlineStream", capacity); } public SweepableReservoir getReservoir() { return reservoir; } /** * * @param context */ @Override public void setup(StreamContext context) { reservoir.setId(context.getId()); } /** * * @param context */ @Override public void activate(StreamContext context) { } /** * */ @Override public void deactivate() { } /** * */ @Override public void teardown() { } @Override public void put(Object tuple) { try { reservoir.put(tuple); if (!(tuple instanceof Tuple)) { count++; } } catch (InterruptedException ie) { logger.debug("Interrupted", ie); throw new RuntimeException(ie); } } @Override public int getCount(boolean reset) { try { return count; } finally { if (reset) { count = 0; } } } @Override public String toString() { return getClass().getName() + '@' + Integer.toHexString(hashCode()) + "{reservoir=" + getReservoir().toString() + '}'; } private static final Logger logger = LoggerFactory.getLogger(InlineStream.class); }




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