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/*-
* ============LICENSE_START=======================================================
* openECOMP : APP-C
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights
* reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.appc.adapter.dmaap;
import java.net.URI;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
public class DmaapProducer extends CommonHttpClient implements Producer {
private static final EELFLogger LOG = EELFManager.getInstance().getLogger(DmaapProducer.class);
private static final String CONTENT_TYPE = "application/cambria";
private static final String URL_TEMPLATE = "%s/events/%s";
private List<String> hosts;
private Set<String> topics;
private boolean useHttps = false;
public DmaapProducer(Collection<String> urls, String topicName) {
hosts = new ArrayList<String>();
topics = new HashSet<String>();
topics.add(topicName);
for (String host : urls) {
hosts.add(formatHostString(host));
}
}
public DmaapProducer(Collection<String> urls, Set<String> topicNames) {
hosts = new ArrayList<String>();
topics = topicNames;
for (String host : urls) {
hosts.add(formatHostString(host));
}
}
@Override
public void updateCredentials(String user, String pass) {
LOG.debug(String.format("Setting auth to %s for %s", user, this.toString()));
this.setBasicAuth(user, pass);
}
@Override
public boolean post(String partition, String data) {
int sent = 0;
try {
HttpPost request = postReq(null);
request.setHeader("Content-Type", CONTENT_TYPE);
request.setEntity(new StringEntity(bodyLine(partition, data)));
for (String topic : topics) {
String uriStr = String.format(URL_TEMPLATE, hosts.get(0), topic);
try {
request.setURI(new URI(uriStr));
CloseableHttpResponse response = getClient().execute(request);
if (response.getStatusLine().getStatusCode() == 200) {
sent++;
}
response.close();
} catch (Exception sendEx) {
LOG.error(String.format("Failed to send message to %s. Reason: %s", uriStr, sendEx.getMessage()),
sendEx);
if (hosts.size() > 1) {
String failedUrl = hosts.remove(0);
hosts.add(failedUrl);
LOG.debug(String.format("Moving host %s to the end of the pool. New primary host is %s",
failedUrl, hosts.get(0)));
}
}
}
} catch (Exception buildEx) {
LOG.error(
String.format("Failed to build request with string [%s]. Message not sent to any topic. Reason: %s",
data, buildEx.getMessage()),
buildEx);
}
return sent == topics.size();
}
@Override
public void useHttps(boolean yes) {
useHttps = yes;
}
/**
* Format the body for the application/cambria content type with no partitioning.
*
* @param msg
* The message body to format
* @return A string in the application/cambria content type
*/
private String bodyLine(String partition, String msg) {
String p = (partition == null) ? "" : partition;
String m = (msg == null) ? "" : msg;
return String.format("%d.%d.%s%s", p.length(), m.length(), p, m);
}
public void close(){
//not used yet
}
}
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