1 files changed, 155 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dmaap/dmf/mr/metrics/publisher/CambriaPublisherUtility.java b/src/main/java/org/onap/dmaap/dmf/mr/metrics/publisher/CambriaPublisherUtility.java
new file mode 100644
index 0000000..7a8beca
--- /dev/null
+++ b/src/main/java/org/onap/dmaap/dmf/mr/metrics/publisher/CambriaPublisherUtility.java
@@ -0,0 +1,155 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  org.onap.dmaap
+ *  ================================================================================
+ *  Copyright © 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=========================================================
+ *  
+ *  ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ *  
+ *******************************************************************************/
+package org.onap.dmaap.dmf.mr.metrics.publisher;
+
+import org.apache.http.HttpHost;
+
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+/**
+ * 
+ * @author anowarul.islam
+ *
+ */
+public class CambriaPublisherUtility
+{
+	public static final String kBasePath = "/events/";
+	public static final int kStdCambriaServicePort = 3904;
+/**
+ * 
+ * Translates a string into <code>application/x-www-form-urlencoded</code>
+ * format using a specific encoding scheme.
+ * @param s
+ * @return
+ * 
+ */
+	public static String escape ( String s )
+	{
+		try
+		{
+			return URLEncoder.encode ( s, "UTF-8");
+		}
+		catch ( UnsupportedEncodingException e )
+		{
+			throw new RuntimeException ( e );
+		}
+	}
+/**
+ * 
+ * building url
+ * @param rawTopic
+ * @return
+ */
+	public static String makeUrl ( String rawTopic )
+	{
+		final String cleanTopic = escape ( rawTopic );
+		
+		final StringBuffer url = new StringBuffer().
+			append ( CambriaPublisherUtility.kBasePath ).
+			append ( cleanTopic );
+		return url.toString ();
+	}
+/**
+ * 
+ * building consumerUrl
+ * @param topic
+ * @param rawConsumerGroup
+ * @param rawConsumerId
+ * @return
+ */
+	public static String makeConsumerUrl ( String topic, String rawConsumerGroup, String rawConsumerId )
+	{
+		final String cleanConsumerGroup = escape ( rawConsumerGroup );
+		final String cleanConsumerId = escape ( rawConsumerId );
+		return CambriaPublisherUtility.kBasePath + topic + "/" + cleanConsumerGroup + "/" + cleanConsumerId;
+	}
+
+	/**
+	 * Create a list of HttpHosts from an input list of strings. Input strings have
+	 * host[:port] as format. If the port section is not provided, the default port is used.
+	 * 
+	 * @param hosts
+	 * @return a list of hosts
+	 */
+	public static List<HttpHost> createHostsList(Collection<String> hosts)
+	{
+		final ArrayList<HttpHost> convertedHosts = new ArrayList<>();
+		for ( String host : hosts )
+		{
+			if ( host.length () == 0 ){
+				continue;
+			}
+			
+			convertedHosts.add ( hostForString ( host ) );
+		}
+		return convertedHosts;
+	}
+
+	/**
+	 * Return an HttpHost from an input string. Input string has
+	 * host[:port] as format. If the port section is not provided, the default port is used.
+	 * 
+	 * @param hosts
+	 * @return a list of hosts
+	 * if host.length<1 throws IllegalArgumentException
+	 * 
+	 */
+	public static HttpHost hostForString ( String host )
+	{
+		if ( host.length() < 1 ){
+			throw new IllegalArgumentException ( "An empty host entry is invalid." );
+		}
+		
+		String hostPart = host;
+		int port = kStdCambriaServicePort;
+
+		final int colon = host.indexOf ( ':' );
+		if ( colon == 0 ){
+			throw new IllegalArgumentException ( "Host entry '" + host + "' is invalid." );
+		}
+		
+		if ( colon > 0 )
+		{
+			hostPart = host.substring ( 0, colon ).trim();
+
+			final String portPart = host.substring ( colon + 1 ).trim();
+			if ( portPart.length () > 0 )
+			{
+				try
+				{
+					port = Integer.parseInt ( portPart );
+				}
+				catch ( NumberFormatException x )
+				{
+					throw new IllegalArgumentException ( "Host entry '" + host + "' is invalid.", x );
+				}
+			}
+			// else: use default port on "foo:"
+		}
+
+		return new HttpHost ( hostPart, port );
+	}
+}