InvalidFlowOutputApp.java

/*
 * Copyright © 2014 Cask Data, Inc.
 *
 * 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 co.cask.cdap;

import co.cask.cdap.api.annotation.Tick;
import co.cask.cdap.api.app.AbstractApplication;
import co.cask.cdap.api.flow.AbstractFlow;
import co.cask.cdap.api.flow.flowlet.AbstractFlowlet;
import co.cask.cdap.api.flow.flowlet.OutputEmitter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.TimeUnit;

/**
 *
 */
public class InvalidFlowOutputApp extends AbstractApplication {

  @Override
  public void configure() {
    setName("InvalidFlowOutputApp");
    setDescription("Invalid Flow output app");
    addFlow(new InvalidFlow());
  }

  /**
   *
   */
  public static final class InvalidFlow extends AbstractFlow {

    @Override
    protected void configureFlow() {
      setName("InvalidFlow");
      setDescription("Invalid flow");
      addFlowlet("gen", new InvalidGenerator());
      addFlowlet("cons", new Consumer());
      connect("gen", "cons");
    }
  }

  /**
   *
   */
  public static final class InvalidGenerator extends AbstractFlowlet {

    private OutputEmitter<String> strOut;
    private OutputEmitter<Long> longOut;


    @Tick(delay = 1L, unit = TimeUnit.SECONDS)
    public void generate() {
      long ts = System.currentTimeMillis();
      strOut.emit(Long.toString(ts));
      longOut.emit(ts);
    }
  }

  /**
   *
   */
  public static final class Consumer extends AbstractFlowlet {

    private static final Logger LOG = LoggerFactory.getLogger(Consumer.class);

    public void process(String str) {
      LOG.info(str);
    }

    public void process(long ts) {
      LOG.info(Long.toString(ts));
    }
  }
}