com.trickl.crawler.protocol.soap.SoapProtocol.java Source code

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Here is the source code for com.trickl.crawler.protocol.soap.SoapProtocol.java

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/*
 * 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 com.trickl.crawler.protocol.soap;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamResult;
import org.apache.droids.api.ManagedContentEntity;
import org.apache.droids.api.Parse;
import org.apache.droids.api.Protocol;
import org.springframework.ws.WebServiceMessage;
import org.springframework.ws.client.core.WebServiceMessageCallback;
import org.springframework.ws.client.core.WebServiceTemplate;
import org.springframework.ws.soap.SoapMessage;

public class SoapProtocol implements Protocol {

    private WebServiceTemplate webServiceTemplate;
    private Source request;
    private URI action;

    public SoapProtocol() {
    }

    @Override
    public boolean isAllowed(URI uri) {
        return true;
    }

    @Override
    public ManagedContentEntity load(URI uri) throws IOException {
        if (uri == null)
            throw new NullPointerException();

        ByteArrayOutputStream xmlOut = new ByteArrayOutputStream();
        StreamResult response = new StreamResult(xmlOut);
        boolean success = getWebServiceTemplate().sendSourceAndReceiveToResult(uri.toString(), getRequest(),
                new WebServiceMessageCallback() {
                    // Set the SOAP header
                    @Override
                    public void doWithMessage(WebServiceMessage message) {
                        URI action = SoapProtocol.this.getAction();
                        if (action != null) {
                            ((SoapMessage) message).setSoapAction(action.toString());
                        }
                    }
                }, response);

        if (!success) {
            throw new IOException("No soap response received from'" + uri.toString() + "'");
        }
        return new TransformResultContentEntity(xmlOut);
    }

    public WebServiceTemplate getWebServiceTemplate() {
        return webServiceTemplate;
    }

    public void setWebServiceTemplate(WebServiceTemplate webServiceTemplate) {
        this.webServiceTemplate = webServiceTemplate;
    }

    public Source getRequest() {
        return request;
    }

    public void setRequest(Source request) {
        this.request = request;
    }

    public URI getAction() {
        return action;
    }

    public void setAction(URI action) {
        this.action = action;
    }

    static class TransformResultContentEntity implements ManagedContentEntity {

        private final ByteArrayOutputStream xmlOut;
        private Parse parse = null;

        public TransformResultContentEntity(ByteArrayOutputStream xmlOut) throws IOException {
            super();
            this.xmlOut = xmlOut;
        }

        @Override
        public InputStream obtainContent() throws IOException {
            ByteArrayInputStream xmlIn = new ByteArrayInputStream(xmlOut.toByteArray());
            return xmlIn;
        }

        @Override
        public void finish() {
        }

        @Override
        public String getMimeType() {
            return "text/xml";
        }

        @Override
        public String getCharset() {
            return "ISO-8859-1";
        }

        @Override
        public Parse getParse() {
            return this.parse;
        }

        @Override
        public void setParse(Parse parse) {
            this.parse = parse;
        }
    }
}