net.kuujo.vertigo.instance.impl.OutputPortImpl.java Source code

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Here is the source code for net.kuujo.vertigo.instance.impl.OutputPortImpl.java

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/*
 * Copyright 2014 the original author or authors.
 *
 * 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 net.kuujo.vertigo.instance.impl;

import io.vertx.core.AsyncResult;
import io.vertx.core.Handler;
import io.vertx.core.MultiMap;
import io.vertx.core.Vertx;
import io.vertx.core.eventbus.Message;
import io.vertx.core.logging.Logger;
import io.vertx.core.logging.LoggerFactory;
import net.kuujo.vertigo.spi.ComponentInstanceFactory;
import net.kuujo.vertigo.instance.ControllableOutput;
import net.kuujo.vertigo.instance.OutputConnection;
import net.kuujo.vertigo.context.OutputConnectionContext;
import net.kuujo.vertigo.instance.OutputPort;
import net.kuujo.vertigo.context.OutputPortContext;
import net.kuujo.vertigo.util.Args;
import net.kuujo.vertigo.util.CountingCompletionHandler;

import java.util.HashMap;
import java.util.Map;

/**
 * Output port implementation.
 *
 * @author <a href="http://github.com/kuujo">Jordan Halterman</a>
 */
public class OutputPortImpl<T> implements OutputPort<T>, ControllableOutput<OutputPort<T>, T>, Handler<Message<T>> {
    private static final Logger log = LoggerFactory.getLogger(OutputPortImpl.class);
    private static final int DEFAULT_SEND_QUEUE_MAX_SIZE = 10000;
    protected final Vertx vertx;
    protected OutputPortContext context;
    protected final Map<String, OutputConnection<T>> connections = new HashMap<>();
    private int maxQueueSize = DEFAULT_SEND_QUEUE_MAX_SIZE;
    private Handler<Void> drainHandler;

    public OutputPortImpl(Vertx vertx, OutputPortContext context, ComponentInstanceFactory factory) {
        this.vertx = vertx;
        this.context = context;
        init(factory);
    }

    /**
     * Initializes the output connections.
     * @param factory
     */
    private void init(ComponentInstanceFactory factory) {
        for (OutputConnectionContext connection : context.connections()) {
            connections.put(connection.target().address(), factory.<T>createOutputConnection(vertx, connection));
        }
    }

    @Override
    public void handle(Message<T> message) {
        String source = message.headers().get("source");
        if (source != null) {
            OutputConnection<T> connection = connections.get(source);
            if (connection != null) {
                connection.handle(message);
            }
        }
    }

    @Override
    public String name() {
        return context.name();
    }

    @Override
    public OutputPort<T> checkpoint() {
        return this;
    }

    @Override
    public OutputPort<T> replay() {
        return this;
    }

    @Override
    public OutputPort<T> setSendQueueMaxSize(int maxSize) {
        Args.checkPositive(maxSize, "max size must be a positive number");
        this.maxQueueSize = maxSize;
        for (OutputConnection<T> connection : connections.values()) {
            connection.setSendQueueMaxSize(maxQueueSize);
        }
        return this;
    }

    @Override
    public int getSendQueueMaxSize() {
        return maxQueueSize;
    }

    @Override
    public int size() {
        int highest = 0;
        for (OutputConnection<T> connection : connections.values()) {
            highest = Math.max(highest, connection.size());
        }
        return highest;
    }

    @Override
    public boolean sendQueueFull() {
        for (OutputConnection<T> stream : connections.values()) {
            if (stream.sendQueueFull()) {
                return true;
            }
        }
        return false;
    }

    @Override
    public OutputPort<T> drainedHandler(Handler<Void> handler) {
        this.drainHandler = handler;
        for (OutputConnection<T> connection : connections.values()) {
            connection.drainedHandler(handler);
        }
        return this;
    }

    @Override
    public OutputPort<T> send(T message) {
        for (OutputConnection<T> connection : connections.values()) {
            connection.send(message);
        }
        return this;
    }

    @Override
    public OutputPort<T> send(T message, MultiMap headers) {
        for (OutputConnection<T> connection : connections.values()) {
            connection.send(message, headers);
        }
        return this;
    }

    @Override
    public OutputPort<T> send(T message, Handler<AsyncResult<Void>> ackHandler) {
        CountingCompletionHandler<Void> counter = new CountingCompletionHandler<>(connections.size());
        counter.setHandler(ackHandler);
        for (OutputConnection<T> connection : connections.values()) {
            connection.send(message, counter);
        }
        return this;
    }

    @Override
    public OutputPort<T> send(T message, MultiMap headers, Handler<AsyncResult<Void>> ackHandler) {
        CountingCompletionHandler<Void> counter = new CountingCompletionHandler<>(connections.size());
        counter.setHandler(ackHandler);
        for (OutputConnection<T> connection : connections.values()) {
            connection.send(message, headers, counter);
        }
        return this;
    }

    @Override
    public String toString() {
        return context.toString();
    }

}