edu.internet2.middleware.grouper.changeLog.esb2.consumer.EsbHttpPublisher.java Source code

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Here is the source code for edu.internet2.middleware.grouper.changeLog.esb2.consumer.EsbHttpPublisher.java

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/*
 * @author Rob Hebron
 */

package edu.internet2.middleware.grouper.changeLog.esb2.consumer;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URL;

import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthScope;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.RequestEntity;
import org.apache.commons.httpclient.methods.StringRequestEntity;
import org.apache.commons.httpclient.params.HttpMethodParams;
import org.apache.commons.logging.Log;

import edu.internet2.middleware.grouper.app.loader.GrouperLoaderConfig;
import edu.internet2.middleware.grouper.util.GrouperUtil;

/**
 * Publishes Grouper events to HTTP(S) server as JSON strings
 *
 *  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.
 *  
 *  @author Rob Hebron
 */
public class EsbHttpPublisher extends EsbPublisherJsonBase {

    private static final Log LOG = GrouperUtil.getLog(EsbHttpPublisher.class);

    @Override
    public boolean dispatchEvent(String eventJsonString, String consumerName) {
        // TODO Auto-generated method stub

        String urlString = GrouperLoaderConfig
                .getPropertyString("changeLog.consumer." + consumerName + ".publisher.url");
        String username = GrouperLoaderConfig
                .getPropertyString("changeLog.consumer." + consumerName + ".publisher.username", "");
        String password = GrouperLoaderConfig
                .getPropertyString("changeLog.consumer." + consumerName + ".publisher.password", "");
        if (LOG.isDebugEnabled()) {
            LOG.debug("Consumer name: " + consumerName + " sending " + GrouperUtil.indent(eventJsonString, false)
                    + " to " + urlString);
        }
        int retries = GrouperLoaderConfig
                .getPropertyInt("changeLog.consumer." + consumerName + ".publisher.retries", 0);
        int timeout = GrouperLoaderConfig
                .getPropertyInt("changeLog.consumer." + consumerName + ".publisher.timeout", 60000);
        PostMethod post = new PostMethod(urlString);
        post.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
                new DefaultHttpMethodRetryHandler(retries, false));
        post.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, new Integer(timeout));
        post.setRequestHeader("Content-Type", "application/json; charset=utf-8");
        RequestEntity requestEntity;
        try {
            requestEntity = new StringRequestEntity(eventJsonString, "application/json", "utf-8");

            post.setRequestEntity(requestEntity);
            HttpClient httpClient = new HttpClient();
            if (!(username.equals(""))) {
                if (LOG.isDebugEnabled()) {
                    LOG.debug("Authenticating using basic auth");
                }
                URL url = new URL(urlString);
                httpClient.getState().setCredentials(new AuthScope(null, url.getPort(), null),
                        new UsernamePasswordCredentials(username, password));
                httpClient.getParams().setAuthenticationPreemptive(true);
                post.setDoAuthentication(true);
            }
            int statusCode = httpClient.executeMethod(post);
            if (statusCode == 200) {
                if (LOG.isDebugEnabled()) {
                    LOG.debug("Status code 200 recieved, event sent OK");
                }
                return true;
            } else {
                if (LOG.isDebugEnabled()) {
                    LOG.debug("Status code " + statusCode + " recieved, event send failed");
                }
                return false;
            }
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return false;
    }

    @Override
    public void close() {
        // Unused, client does not maintain a persistent connection in this version

    }

}