org.jasig.portlet.newsreader.model.RemoteHttpFullStory.java Source code

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Here is the source code for org.jasig.portlet.newsreader.model.RemoteHttpFullStory.java

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/**
 * Licensed to Jasig under one or more contributor license
 * agreements. See the NOTICE file distributed with this work
 * for additional information regarding copyright ownership.
 * Jasig 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,
 * 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.jasig.portlet.newsreader.model;

import java.io.IOException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.codehaus.jackson.annotate.JsonCreator;
import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.annotate.JsonProperty;
import org.jasig.portlet.newsreader.adapter.NewsException;

public class RemoteHttpFullStory implements FullStory {

    protected final Log log = LogFactory.getLog(getClass());
    private final String remoteHttpUrl;

    @JsonCreator
    public RemoteHttpFullStory(@JsonProperty("remoteHttpUrl") String remoteHttpUrl) {
        this.remoteHttpUrl = remoteHttpUrl;
    }

    public String getRemoteHttpUrl() {
        return remoteHttpUrl;
    }

    @Override
    @JsonIgnore
    public String getFullStoryText() {
        try {
            return fetchRemoteContent();
        } catch (Exception ex) {
            throw new NewsException("Failed to fetch FullStory content from " + remoteHttpUrl, ex);
        }
    }

    private String fetchRemoteContent() throws ClientProtocolException, IOException {
        log.trace("RemoteHttpFullStory.fetchRemoteContent()");
        HttpClient httpclient = new DefaultHttpClient();
        try {
            HttpGet httpget = new HttpGet(remoteHttpUrl);

            log.debug("executing request " + httpget.getURI());

            // Create a response handler
            ResponseHandler<String> responseHandler = new BasicResponseHandler();
            String responseBody = httpclient.execute(httpget, responseHandler);
            return responseBody;
        } finally {
            // When HttpClient instance is no longer needed,
            // shut down the connection manager to ensure
            // immediate deallocation of all system resources
            httpclient.getConnectionManager().shutdown();
        }
    }

}