/*******************************************************************************
 (c) 2005-2014 Copyright, Real-Time Innovations, Inc.  All rights reserved.
 RTI grants Licensee a license to use, modify, compile, and create derivative
 works of the Software.  Licensee has the right to distribute object form only
 for use with RTI products.  The Software is provided "as is", with no warranty
 of any type, including any warranty for fitness for any purpose. RTI is under
 no obligation to maintain or support the Software.  RTI shall not be liable for
 any incidental or consequential damages arising out of the use or inability to
 use the software.
 ******************************************************************************/

/* hello_worldPublisher.java

   A publication of data of type hello_world

   This file is derived from code automatically generated by the rtiddsgen 
   command:

   rtiddsgen -language java -example <arch> .idl

   Example publication of type hello_world automatically generated by 
   'rtiddsgen' To test them follow these steps:

   (1) Compile this file and the example subscription.

   (2) Start the subscription with the command
       java hello_worldSubscriber <domain_id> <sample_count>
       
   (3) Start the publication with the command
       java hello_worldPublisher <domain_id> <sample_count>

   (4) [Optional] Specify the list of discovery initial peers and 
       multicast receive addresses via an environment variable or a file 
       (in the current working directory) called NDDS_DISCOVERY_PEERS.  
       
   You can run any number of publishers and subscribers programs, and can 
   add and remove them dynamically from the domain.
              
   Example:
        
       To run the example application on domain <domain_id>:
            
       Ensure that $(NDDSHOME)/lib/<arch> is on the dynamic library path for
       Java.                       
       
        On Unix: 
             add $(NDDSHOME)/lib/<arch> to the 'LD_LIBRARY_PATH' environment
             variable
                                         
        On Windows:
             add %NDDSHOME%\lib\<arch> to the 'Path' environment variable
                        

       Run the Java applications:
       
        java -Djava.ext.dirs=$NDDSHOME/class hello_worldPublisher <domain_id>

        java -Djava.ext.dirs=$NDDSHOME/class hello_worldSubscriber <domain_id>        

       
       
modification history
------------ -------         
*/

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Arrays;

import com.rti.dds.domain.*;
import com.rti.dds.infrastructure.*;
import com.rti.dds.publication.*;
import com.rti.dds.topic.*;
import com.rti.ndds.config.*;

 
// ===========================================================================

public class hello_worldPublisher {
    // -----------------------------------------------------------------------
    // Public Methods
    // -----------------------------------------------------------------------
    
    //This function will take the values from the command line parameters
    private static int READ_INTEGER_PARAM(int i, String parameter,
            String[] args, String syntax) {
        if (args[i].equals(parameter)) {
            if (i + 1 >= args.length) {
                System.out.println(syntax);
                return -1;
            }
            return Integer.valueOf(args[i + 1]).intValue();
        }
        return 0;
    }

    public static void main(String[] args) {
        // --- Get domain ID --- //
        int domain_id = 0;
        int sample_count = 0;
        int initial_value = 0;
        int dwh = 0;
        int sleep = 0;
        String syntax;
        int i = 0;

        syntax = new String("[options] \n"
                + "-domain_id <domain ID> (default: 0)\n"
                + "-sample_count <number of published samples> "
                + "(default: infinite)\n"
                + "-initial_value <first sample value> (default: 0)\n"
                + "-sleep <sleep time in seconds before finishing> "
                + "(default: 0)\n"
                + "-dwh <1|0> Enable/Disable durable writer history "
                + "(default: 0)\n");

        for (i = 0; i < args.length; ++i) {
            if (sleep == 0) {
                sleep = READ_INTEGER_PARAM(i, "-sleep", args, syntax);
            }
            
            if (domain_id == 0) {
                domain_id = READ_INTEGER_PARAM(i, "-domain_id", args, syntax);
            }
            
            if (sample_count == 0) {
                sample_count = READ_INTEGER_PARAM(i, "-sample_count", args,
                        syntax);
            }
            
            if (initial_value == 0) {
                initial_value = READ_INTEGER_PARAM(i, "-initial_value", args,
                        syntax);
            }
            
            if (dwh == 0) {
                dwh = READ_INTEGER_PARAM(i, "-dwh", args, syntax);
            }
        }

        if (sleep < 0 || domain_id < 0 || sample_count < 0 || initial_value < 0
                || dwh < 0) {
            return;
        }
       
        /* Uncomment this to turn on additional logging
        Logger.get_instance().set_verbosity_by_category(
            LogCategory.NDDS_CONFIG_LOG_CATEGORY_API,
            LogVerbosity.NDDS_CONFIG_LOG_VERBOSITY_STATUS_ALL);
        */
        
        // --- Run --- //
        publisherMain(domain_id, sample_count, initial_value, dwh, sleep);
    }
 
    // -----------------------------------------------------------------------
    // Private Methods
    // -----------------------------------------------------------------------
    
    // --- Constructors: -----------------------------------------------------
    
    private hello_worldPublisher() {
        super();
    }
 
    // -----------------------------------------------------------------------

    private static void publisherMain(int domain_id, int sample_count,
            int initial_value, int dwh, int sleep) {

        DomainParticipant participant = null;
        Publisher publisher = null;
        Topic topic = null;
        hello_worldDataWriter writer = null;

        try {
            // --- Create participant --- //

            /*
             * To customize participant QoS, use the configuration file
             * USER_QOS_PROFILES.xml
             */

            participant = DomainParticipantFactory.TheParticipantFactory
                    .create_participant(domain_id,
                            DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
                            null /* listener */, StatusKind.STATUS_MASK_NONE);
            if (participant == null) {
                System.err.println("create_participant error\n");
                return;
            }

            // --- Create publisher --- //

            /*
             * To customize publisher QoS, use the configuration file
             * USER_QOS_PROFILES.xml
             */

            publisher = participant.create_publisher(
                    DomainParticipant.PUBLISHER_QOS_DEFAULT,
                    null /* listener */, StatusKind.STATUS_MASK_NONE);
            if (publisher == null) {
                System.err.println("create_publisher error\n");
                return;
            }

            // --- Create topic --- //

            /* Register type before creating topic */
            String typeName = hello_worldTypeSupport.get_type_name();
            hello_worldTypeSupport.register_type(participant, typeName);

            /*
             * To customize topic QoS, use the configuration file
             * USER_QOS_PROFILES.xml
             */

            topic = participant.create_topic("Example hello_world", typeName,
                    DomainParticipant.TOPIC_QOS_DEFAULT, null /* listener */,
                    StatusKind.STATUS_MASK_NONE);
            if (topic == null) {
                System.err.println("create_topic error\n");
                return;
            }

            /* If you use Durable Writer History, you need to set several 
             * properties. These properties are set in the USER_QOS_PROFILE.xml
             * file, "durable_writer_history_Profile" profile. See that file for
             * further details.
             */

            // --- Create writer --- //

            if (dwh == 1) {
                writer = (hello_worldDataWriter) publisher
                        .create_datawriter_with_profile(topic,
                                "persistence_example_Library",
                                "durable_writer_history_Profile", null,
                                StatusKind.STATUS_MASK_NONE);
            } else {
                writer = (hello_worldDataWriter) publisher
                        .create_datawriter_with_profile(topic,
                                "persistence_example_Library",
                                "persistence_service_Profile", null,
                                StatusKind.STATUS_MASK_NONE);
            }
            if (writer == null) {
                System.err.println("create_writer error\n");
                return;
            }
            // --- Write --- //

            /* Create data sample for writing */
            hello_world instance = new hello_world();

            InstanceHandle_t instance_handle = InstanceHandle_t.HANDLE_NIL;
            /*
             * For a data type that has a key, if the same instance is going to
             * be written multiple times, initialize the key here and register
             * the keyed instance prior to writing
             */
            // instance_handle = writer.register_instance(instance);

            final long send_period_millis = 1 * 1000; // 1 seconds
            final long one_sec = 1000;

            for (int count = 0; (sample_count == 0) || (count < sample_count); 
                    ++count) {
                System.out.println("Writing hello_world, count "
                        + initial_value);

                /* Modify the instance to be written here */
                instance.data = initial_value;
                initial_value++;

                /* Write data */
                writer.write(instance, instance_handle);
                try {
                    Thread.sleep(send_period_millis);
                } catch (InterruptedException ix) {
                    System.err.println("INTERRUPTED");
                    break;
                }
            }

            while (sleep != 0) {
                try {
                    Thread.sleep(one_sec);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                sleep--;
            }

            //writer.unregister_instance(instance, instance_handle);

        } finally {

            // --- Shutdown --- //

            if (participant != null) {
                participant.delete_contained_entities();

                DomainParticipantFactory.TheParticipantFactory
                        .delete_participant(participant);
            }
         /* RTI Connext provides finalize_instance()
               method for people who want to release memory used by the
               participant factory singleton. Uncomment the following block of
               code for clean destruction of the participant factory
               singleton. */
            //DomainParticipantFactory.finalize_instance();
        }
    }
}