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/*-
* ============LICENSE_START=======================================================
* OpenECOMP - org.openecomp.dmaapbc
* ================================================================================
* 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.dmaapbc.client;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ProtocolException;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLException;
import org.apache.commons.codec.binary.Base64;
import org.apache.log4j.Logger;
import org.openecomp.dmaapbc.logging.BaseLoggingClass;
import org.openecomp.dmaapbc.model.ApiError;
import org.openecomp.dmaapbc.model.MR_Cluster;
public class MrTopicConnection extends BaseLoggingClass {
private String topicURL;
private HttpsURLConnection uc;
private String mmProvCred;
public MrTopicConnection(String user, String pwd ) {
mmProvCred = new String( user + ":" + pwd );
}
public boolean makeTopicConnection( MR_Cluster cluster, String topic, String overrideFqdn ) {
String fqdn = overrideFqdn != null ? overrideFqdn : cluster.getFqdn();
logger.info( "connect to cluster: " + fqdn + " for topic: " + topic );
topicURL = cluster.getTopicProtocol() + "://" + fqdn + ":" + cluster.getTopicPort() + "/events/" + topic ;
return makeConnection( topicURL );
}
private boolean makeConnection( String pURL ) {
logger.info( "makeConnection to " + pURL );
try {
URL u = new URL( pURL );
uc = (HttpsURLConnection) u.openConnection();
uc.setInstanceFollowRedirects(false);
logger.info( "successful connect to " + pURL );
return(true);
} catch (Exception e) {
logger.error("Unexpected error during openConnection of " + pURL );
e.printStackTrace();
return(false);
}
}
static String bodyToString( InputStream is ) {
StringBuilder sb = new StringBuilder();
BufferedReader br = new BufferedReader( new InputStreamReader(is));
String line;
try {
while ((line = br.readLine()) != null ) {
sb.append( line );
}
} catch (IOException ex ) {
errorLogger.error( "IOexception:" + ex);
}
return sb.toString();
}
public ApiError doPostMessage( String postMessage ) {
ApiError response = new ApiError();
String auth = "Basic " + Base64.encodeBase64String(mmProvCred.getBytes());
try {
byte[] postData = postMessage.getBytes();
logger.info( "post fields=" + postMessage );
uc.setRequestProperty("Authorization", auth);
logger.info( "Authenticating with " + auth );
uc.setRequestMethod("POST");
uc.setRequestProperty("Content-Type", "application/json");
uc.setRequestProperty( "charset", "utf-8");
uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
uc.setUseCaches(false);
uc.setDoOutput(true);
OutputStream os = null;
try {
uc.connect();
os = uc.getOutputStream();
os.write( postData );
} catch (ProtocolException pe) {
// Rcvd error instead of 100-Continue
try {
// work around glitch in Java 1.7.0.21 and likely others
// without this, Java will connect multiple times to the server to run the same request
uc.setDoOutput(false);
} catch (Exception e) {
}
} catch ( SSLException se ) {
response.setCode(500);
response.setMessage( se.getMessage());
return response;
}
response.setCode( uc.getResponseCode());
logger.info( "http response code:" + response.getCode());
response.setMessage( uc.getResponseMessage() );
logger.info( "response message=" + response.getMessage() );
if ( response.getMessage() == null) {
// work around for glitch in Java 1.7.0.21 and likely others
// When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
String h0 = uc.getHeaderField(0);
if (h0 != null) {
int i = h0.indexOf(' ');
int j = h0.indexOf(' ', i + 1);
if (i != -1 && j != -1) {
response.setMessage( h0.substring(j + 1) );
}
}
}
if ( response.is2xx() ) {
response.setFields( bodyToString( uc.getInputStream() ) );
logger.info( "responseBody=" + response.getFields() );
return response;
}
} catch (Exception e) {
response.setCode(500);
response.setMessage( "Unable to read response");
logger.warn( response.getMessage() );
e.printStackTrace();
}
finally {
try {
uc.disconnect();
} catch ( Exception e ) {}
}
return response;
}
}
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