samples/connectors/src/main/java/org/apache/edgent/samples/connectors/kafka/Runner.java

/*
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or more contributor license agreements.  See the NOTICE file
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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,
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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specific language governing permissions and limitations
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*/
package org.apache.edgent.samples.connectors.kafka;

import static org.apache.edgent.samples.connectors.kafka.KafkaClient.OPT_BOOTSTRAP_SERVERS;
import static org.apache.edgent.samples.connectors.kafka.KafkaClient.OPT_PUB;
import static org.apache.edgent.samples.connectors.kafka.KafkaClient.OPT_TOPIC;
import static org.apache.edgent.samples.connectors.kafka.KafkaClient.OPT_ZOOKEEPER_CONNECT;

import org.apache.edgent.console.server.HttpServer;
import org.apache.edgent.providers.development.DevelopmentProvider;
import org.apache.edgent.samples.connectors.Options;
import org.apache.edgent.topology.Topology;

/**
 * Build and run the publisher or subscriber application.
 */
public class Runner {
    /**
     * Build and run the publisher or subscriber application.
     * @param options command line options
     * @throws Exception on failure
     */
    public static void run(Options options) throws Exception {
        boolean isPub = options.get(OPT_PUB); 

        // Get a topology runtime provider
        DevelopmentProvider tp = new DevelopmentProvider();

        Topology top;
        if (isPub) {
            PublisherApp publisher = new PublisherApp(tp, options);
            top = publisher.buildAppTopology();
        }
        else {
            SubscriberApp subscriber = new SubscriberApp(tp, options);
            top = subscriber.buildAppTopology();
        }
        
        // Submit the app/topology; send or receive the messages.
        System.out.println(
                "Using Kafka cluster at bootstrap.servers="
                + options.get(OPT_BOOTSTRAP_SERVERS)
                + " zookeeper.connect=" + options.get(OPT_ZOOKEEPER_CONNECT)
                + "\n" + (isPub ? "Publishing" : "Subscribing") 
                + " to topic " + options.get(OPT_TOPIC));
        System.out.println("Console URL for the job: "
                + tp.getServices().getService(HttpServer.class).getConsoleUrl());
        tp.submit(top);
    }

}