com.datatorrent.stram.engine.StreamContext.java Source code

Introduction

Here is the source code for com.datatorrent.stram.engine.StreamContext.java

Source

/**
 * 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.engine;

import java.net.InetSocketAddress;
import java.util.Collection;
import java.util.Collections;
import java.util.Set;

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

import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.commons.lang.builder.ToStringStyle;

import com.datatorrent.api.Attribute;
import com.datatorrent.api.Attribute.AttributeMap;
import com.datatorrent.api.Attribute.AttributeMap.DefaultAttributeMap;
import com.datatorrent.api.Context;
import com.datatorrent.api.StreamCodec;

import com.datatorrent.netlet.EventLoop;
import com.datatorrent.stram.codec.DefaultStatefulStreamCodec;

/**
 * Defines the destination for tuples processed<p>
 * <br>
 *
 * @since 0.3.2
 */
public class StreamContext extends DefaultAttributeMap implements Context {
    public static final Attribute<InetSocketAddress> BUFFER_SERVER_ADDRESS = new Attribute<InetSocketAddress>(null,
            null);
    public static final Attribute<byte[]> BUFFER_SERVER_TOKEN = new Attribute<byte[]>(null, null);
    public static final Attribute<EventLoop> EVENT_LOOP = new Attribute<EventLoop>(null, null);
    public static final Attribute<StreamCodec<?>> CODEC = new Attribute<StreamCodec<?>>(
            new DefaultStatefulStreamCodec<Object>(), null);

    @Override
    public AttributeMap getAttributes() {
        return this;
    }

    @Override
    public <T> T getValue(Attribute<T> key) {
        T retvalue = get(key);
        if (retvalue == null) {
            return key.defaultValue;
        }

        return retvalue;
    }

    public InetSocketAddress getBufferServerAddress() {
        InetSocketAddress isa = get(BUFFER_SERVER_ADDRESS);
        return new InetSocketAddress(isa.getHostName(), isa.getPort());
    }

    public void setBufferServerAddress(InetSocketAddress isa) {
        put(BUFFER_SERVER_ADDRESS, isa);
    }

    @Override
    public void setCounters(Object counters) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public void sendMetrics(Collection<String> metricNames) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    public static enum State {
        UNDEFINED, OUTSIDE_WINDOW, INSIDE_WINDOW, TERMINATED
    }

    private String sourceId;
    private String sinkId;
    private long finishedWindowId;
    private int mask;
    private Set<Integer> partitions;
    private String id;
    private String portId;

    /**
     *
     * @param mask
     * @param partitionKeys
     */
    public void setPartitions(int mask, Set<Integer> partitionKeys) {
        this.mask = mask;
        this.partitions = partitionKeys == null ? null : Collections.unmodifiableSet(partitionKeys);
    }

    /**
     *
     * @return
     */
    public int getPartitionMask() {
        return mask;
    }

    /**
     *
     * @return Collection<Integer>
     */
    @SuppressWarnings("ReturnOfCollectionOrArrayField")
    public Collection<Integer> getPartitions() {
        return partitions;
    }

    public StreamContext(String id) {
        this.id = id;
    }

    /**
     * @return the startingWindowId
     */
    public long getFinishedWindowId() {
        return finishedWindowId;
    }

    /**
     * @param startingWindowId the startingWindowId to set
     */
    public void setFinishedWindowId(long startingWindowId) {
        this.finishedWindowId = startingWindowId;
    }

    /**
     *
     * @param id
     */
    public void setId(String id) {
        this.id = id;
    }

    /**
     *
     * @return String
     */
    public String getId() {
        return id;
    }

    /**
     * @return the sourceId
     */
    public String getSourceId() {
        return sourceId;
    }

    /**
     * @param upstreamNodeId the sourceId to set
     */
    public void setSourceId(String upstreamNodeId) {
        this.sourceId = upstreamNodeId;
    }

    /**
     * @return String (the sink id)
     */
    public String getSinkId() {
        return sinkId;
    }

    /**
     * @param downstreamNodeId the sinkId to set this value
     */
    public void setSinkId(String downstreamNodeId) {
        this.sinkId = downstreamNodeId;
    }

    public String getPortId() {
        return portId;
    }

    public void setPortId(String portId) {
        this.portId = portId;
    }

    @Override
    public String toString() {
        return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).append("sourceId", sourceId)
                .append("sinkId", sinkId).toString();
    }

    static {
        AttributeInitializer.initialize(StreamContext.class);
    }

    @SuppressWarnings("FieldNameHidesFieldInSuperclass")
    private static final long serialVersionUID = 201212042146L;
    @SuppressWarnings("unused")
    private static final Logger logger = LoggerFactory.getLogger(StreamContext.class);
}