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package mtomlarge.client;

import com.sun.xml.ws.developer.JAXWSProperties;

import javax.xml.ws.BindingProvider;
import javax.xml.ws.Holder;
import javax.xml.ws.soap.SOAPBinding;
import javax.xml.ws.soap.MTOMFeature;
import javax.xml.transform.stream.StreamSource;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import java.io.File;
import java.io.InputStream;
import java.io.FileInputStream;
import java.awt.*;
import java.util.Arrays;
import java.io.*;
import java.util.*;

import com.sun.xml.ws.developer.JAXWSProperties;
import com.sun.xml.ws.developer.StreamingDataHandler;

/**
 * @author Jitendra Kotamraju
 */
public class MtomApp {


    public static void main (String[] args) throws Exception {
        Hello port = new HelloService().getHelloPort(new MTOMFeature());
        Map<String, Object> ctxt = ((BindingProvider)port).getRequestContext();
        ctxt.put(JAXWSProperties.HTTP_CLIENT_STREAMING_CHUNK_SIZE, 8192); 
        testUpload (port);
    }

    private static void testUpload(Hello port) throws Exception {
        Holder<Integer> total = new Holder<Integer>(123456000);
        Holder<String> name = new Holder<String>("huge");
        Holder<DataHandler> dh = new Holder<DataHandler>(getDataHandler(total.value));
        port.upload(total, name, dh);
        if (!"hugehuge".equals(name.value)) {
           System.out.println("FAIL: Expecting: hugehuge Got: "+name.value);
           return;
        }
        System.out.println("SUCCESS: Got: "+name.value);
        System.out.println("Going to verify DataHandler. This would take some time");
        validateDataHandler(total.value, dh.value);
        System.out.println("SUCCESS: DataHandler is verified");
    }

    private static DataHandler getDataHandler(final int total)  {
        return new DataHandler(new DataSource() {
            public InputStream getInputStream() throws IOException {
                return new InputStream() {
                    int i;

                    @Override
                    public int read() throws IOException {
                        return i<total ? 'A'+(i++%26) : -1;
                    }
                };
            }

            public OutputStream getOutputStream() throws IOException {
                return null;
            }

            public String getContentType() {
                return "application/octet-stream";
            }

            public String getName() {
                return "";
            }
        });
    }

    private static void validateDataHandler(int expTotal, DataHandler dh)
		throws IOException {

        // readOnce() doesn't store attachment on the disk in some cases
        // for e.g when only one attachment is in the message
        StreamingDataHandler sdh = (StreamingDataHandler)dh;
        InputStream in = sdh.readOnce();
        byte[] buf = new byte[8192];
        int total = 0;
        int len;
        while((len=in.read(buf, 0, buf.length)) != -1) {
            for(int i=0; i < len; i++) {
                if ((byte)('A'+(total+i)%26) != buf[i]) {
                    System.out.println("FAIL: DataHandler data is different");
                }
            }
            total += len;
            if (total%(8192*250) == 0) {
            	System.out.println("Total so far="+total);
            }
        }
        System.out.println();
        if (total != expTotal) {
           System.out.println("FAIL: DataHandler data size is different. Expected="+expTotal+" Got="+total);
        }
        in.close();
        sdh.close();
    }
}
