org.semantictools.jsonld.impl.AppspotContextPublisher.java Source code

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Here is the source code for org.semantictools.jsonld.impl.AppspotContextPublisher.java

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/*******************************************************************************
 * Copyright 2012 Pearson Education
 * 
 * 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 org.semantictools.jsonld.impl;

import java.net.HttpURLConnection;
import java.nio.charset.Charset;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.semantictools.jsonld.LdPublishException;
import org.semantictools.jsonld.LdAsset;
import org.semantictools.jsonld.LdPublisher;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * A utility that publishes to the semantic-tools application at appspot.com.
 * @author Greg McFall
 *
 */
public class AppspotContextPublisher implements LdPublisher {
    private static final Logger logger = LoggerFactory.getLogger(AppspotContextPublisher.class);

    private static final String SERVLET_URL = "http://semantic-tools.appspot.com/admin/uploadContext.do";
    //private static final String SERVLET_URL = "http://127.0.0.1:8888//admin/uploadContext.do";
    private static final String URI = "uri";
    private static final String FILE_UPLOAD = "fileUpload";

    @Override
    public void publish(LdAsset asset) throws LdPublishException {

        String uri = asset.getURI();

        HttpClient client = new DefaultHttpClient();
        HttpPost post = new HttpPost(SERVLET_URL);
        post.setHeader("CONTENT-TYPE", "multipart/form-data; boundary=xxxBOUNDARYxxx");
        MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE, "xxxBOUNDARYxxx",
                Charset.forName("UTF-8"));

        try {

            String content = asset.loadContent();

            entity.addPart(URI, new StringBody(uri));
            entity.addPart(FILE_UPLOAD, new StringBody(content));
            post.setEntity(entity);

            logger.debug("uploading... " + uri);

            HttpResponse response = client.execute(post);
            int status = response.getStatusLine().getStatusCode();

            client.getConnectionManager().shutdown();
            if (status != HttpURLConnection.HTTP_OK) {
                throw new LdPublishException(uri, null);
            }

        } catch (Exception e) {
            throw new LdPublishException(uri, e);
        }

    }

}