[DMAAP-BC] Consolidate bus controller repos
[dmaap/buscontroller.git] / dmaap-bc / src / main / java / org / onap / dmaap / dbcapi / client / MrProvConnection.java
diff --git a/dmaap-bc/src/main/java/org/onap/dmaap/dbcapi/client/MrProvConnection.java b/dmaap-bc/src/main/java/org/onap/dmaap/dbcapi/client/MrProvConnection.java
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+/*-
+ * ============LICENSE_START=======================================================
+ * org.onap.dmaap
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2019 IBM.
+ * ================================================================================
+ * 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.onap.dmaap.dbcapi.client;
+
+import org.apache.commons.codec.binary.Base64;
+import org.onap.dmaap.dbcapi.aaf.AafDecrypt;
+import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
+import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
+import org.onap.dmaap.dbcapi.model.ApiError;
+import org.onap.dmaap.dbcapi.model.MR_Cluster;
+import org.onap.dmaap.dbcapi.model.Topic;
+import org.onap.dmaap.dbcapi.util.DmaapConfig;
+
+import javax.net.ssl.HostnameVerifier;
+import javax.net.ssl.HttpsURLConnection;
+import javax.net.ssl.SSLSession;
+
+import java.io.*;
+import java.net.*;
+import java.util.Arrays;
+
+public class MrProvConnection extends BaseLoggingClass{
+        
+    private String provURL;
+    
+    private HttpURLConnection uc;
+
+    
+    private String topicMgrCred;
+    private String authMethod;
+    private    String    user;
+    private    String    encPwd;
+    private    String  unit_test;
+    private boolean hostnameVerify;
+    
+    public MrProvConnection() {
+        String mechIdProperty = "aaf.TopicMgrUser";
+        String pwdProperty = "aaf.TopicMgrPassword";
+        DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
+        user = p.getProperty( mechIdProperty, "noMechId@domain.netset.com" );
+        encPwd = p.getProperty( pwdProperty, "notSet" );
+        authMethod = p.getProperty("MR.authentication", "none");
+        topicMgrCred =  getCred();
+        hostnameVerify= "true".equalsIgnoreCase(p.getProperty("MR.hostnameVerify", "true"));
+        unit_test = p.getProperty( "UnitTest", "No" );
+        
+    }
+    
+    private String getCred( ) {
+
+
+        String pwd = "";
+        AafDecrypt decryptor = new AafDecrypt();    
+        pwd = decryptor.decrypt(encPwd);
+        return user + ":" + pwd;    
+    }
+    
+    
+    public boolean makeTopicConnection( MR_Cluster cluster ) {
+        boolean rc = false;
+       logger.info( "connect to cluster: " + cluster.getDcaeLocationName());
+        
+
+        provURL = cluster.getTopicProtocol() + "://" + cluster.getFqdn() + ":" + cluster.getTopicPort() + "/topics/create";
+
+        if ( cluster.getTopicProtocol().equals( "https" ) ) {
+            rc = makeSecureConnection( provURL );
+        } else {
+               rc = makeConnection( provURL );
+        }
+       if ( rc  && unit_test.equals( "Yes" ) ) {
+               // set timeouts low so we don't hold up unit tests in build process
+            uc.setReadTimeout(5);
+            uc.setConnectTimeout(5);                   
+       }
+       return rc;
+        
+    }
+
+    private boolean makeSecureConnection( String pURL ) {
+        logger.info( "makeConnection to " + pURL );
+    
+        try {
+       
+                       HostnameVerifier hostnameVerifier = new HostnameVerifier() {
+                               @Override
+                               public boolean verify( String hostname, SSLSession session ) {
+                                       return true;
+                               }
+                       
+                       };
+            URL u = new URL( pURL );
+            uc = (HttpsURLConnection) u.openConnection();
+            uc.setInstanceFollowRedirects(false);
+            if ( ! hostnameVerify ) {
+                               HttpsURLConnection ucs = (HttpsURLConnection) uc;
+                               ucs.setHostnameVerifier(hostnameVerifier);
+                       }
+            logger.info( "open secure connect to " + pURL );
+            return(true);
+        } catch( UnknownHostException uhe ){
+            logger.error( "Caught UnknownHostException for " + pURL);
+            return(false);
+        } catch (Exception e) {
+            logger.error("Unexpected error during openConnection of " + pURL );
+            logger.error("Unexpected error during openConnection of ",e );
+            return(false);
+        } 
+
+    }
+    private boolean makeConnection( String pURL ) {
+        logger.info( "makeConnection to " + pURL );
+    
+        try {
+            URL u = new URL( pURL );
+            uc = (HttpURLConnection) u.openConnection();
+            uc.setInstanceFollowRedirects(false);                      
+
+            logger.info( "open connect to " + pURL );
+            return(true);
+        } catch( UnknownHostException uhe ){
+            logger.error( "Caught UnknownHostException for " + pURL);
+            return(false);
+        } catch (Exception e) {
+            logger.error("Unexpected error during openConnection of " + pURL );
+            logger.error("Unexpected error during openConnection of ",e );
+            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 String doPostTopic( Topic postTopic, ApiError err ) {
+        String auth =  "Basic " + Base64.encodeBase64String(topicMgrCred.getBytes());
+
+
+        String responsemessage = null;
+        int rc = -1;
+
+
+        try {
+            byte[] postData = postTopic.getBytes();
+            logger.info( "post fields=" + Arrays.toString(postData));
+            
+                       if ( authMethod.equalsIgnoreCase("basicAuth") ) {
+                               uc.setRequestProperty("Authorization", auth);
+                               logger.info( "Authenticating with " + auth );
+                       } else if ( authMethod.equalsIgnoreCase("cert")) {
+                               logger.error( "MR.authentication set for client certificate.  Not supported yet.");
+                       }
+            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 ( UnknownHostException uhe ) {
+                errorLogger.error( DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION , "Unknown Host Exception" , provURL );
+                err.setCode(500);
+                err.setMessage("Unknown Host Exception");
+                err.setFields( uc.getURL().getHost());
+                return new String( "500: " + uhe.getMessage());
+            }catch ( ConnectException ce ) {
+                       if ( unit_test.equals( "Yes" ) ) {
+                               err.setCode(200);
+                               err.setMessage( "simulated response");
+                               logger.info( "artificial 200 response from doPostMessage because unit_test =" + unit_test );
+               } else { 
+                       errorLogger.error( DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION, provURL, "HTTP Connection Exception"  );
+                       err.setCode(500);
+                       err.setMessage("HTTP Connection Exception");
+                       err.setFields( uc.getURL().getHost());
+                return new String( "500: " + ce.getMessage());
+               }
+            }
+            rc = uc.getResponseCode();
+            logger.info( "http response code:" + rc );
+            err.setCode(rc);
+            responsemessage = uc.getResponseMessage();
+            logger.info( "responsemessage=" + responsemessage );
+            err.setMessage(responsemessage);
+
+
+            if (responsemessage == 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) {
+                         responsemessage = h0.substring(j + 1);
+                     }
+                 }
+            }
+            if (rc >= 200 && rc < 300 ) {
+                String responseBody = null;
+                 responseBody = bodyToString( uc.getInputStream() );
+                logger.info( "responseBody=" + responseBody );
+                return responseBody;
+
+            } 
+            
+        } catch (Exception e) {
+            errorLogger.error("Unable to read response:  " + e.getMessage() );
+           
+        }
+        finally {
+            try {
+                uc.disconnect();
+            } catch ( Exception e ) {
+                errorLogger.error("Unable to disconnect");
+            }
+        }
+        return new String( rc +": " + responsemessage );
+
+    }
+    
+
+
+        
+}