Initial commit with all the necessary files

[aai/aai-common.git] / aai-core / src / main / java / org / openecomp / aai / util / AAIApiVersion.java

diff --git a/aai-core/src/main/java/org/openecomp/aai/util/AAIApiVersion.java b/aai-core/src/main/java/org/openecomp/aai/util/AAIApiVersion.java
new file mode 100644 (file)
index 0000000..5668724
--- /dev/null
+++ b/aai-core/src/main/java/org/openecomp/aai/util/AAIApiVersion.java
@@ -0,0 +1,74 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * org.openecomp.aai
+ * ================================================================================
+ * 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.aai.util;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.cxf.message.Message;
+import org.apache.cxf.phase.PhaseInterceptorChain;
+
+import org.openecomp.aai.exceptions.AAIException;
+
+public class AAIApiVersion {
+       
+       private static final Pattern versionPattern = Pattern.compile("(^|\\/)(v\\d+)\\/");
+       
+       private static final Pattern latestVersionPattern = Pattern.compile("(^|\\/)(latest)\\/");
+       
+       /**
+        * Gets the.
+        *
+        * @return the string
+        * @throws AAIException the AAI exception
+        */
+       public static String get() throws AAIException {
+               
+               String apiVersion = null;
+               try {
+                       Message message = PhaseInterceptorChain.getCurrentMessage();
+                       String requestURI = (String) message.get(Message.REQUEST_URI);
+                       
+                       if (requestURI != null) {
+                               Matcher matcher = versionPattern.matcher(requestURI);
+                               if (matcher.find() && matcher.groupCount() >= 2) {
+                                       apiVersion = matcher.group(2);
+                       }
+                               if (apiVersion == null) { 
+                                       Matcher latestMatcher = latestVersionPattern.matcher(requestURI);
+                                       if (latestMatcher.find() && latestMatcher.groupCount() >= 2) {
+                                               apiVersion = AAIConfig.get(AAIConstants.AAI_DEFAULT_API_VERSION_PROP, AAIConstants.AAI_DEFAULT_API_VERSION);
+                                       }
+                               }
+                               
+                       }
+                       
+               } catch (Exception e) { 
+                       // TODO: we may want to log an error here
+               }
+               // TODO: should this check the value a little closer and look for a pattern?
+               if (apiVersion == null || !apiVersion.startsWith("v")) { 
+                       apiVersion = AAIConfig.get (AAIConstants.AAI_DEFAULT_API_VERSION_PROP, AAIConstants.AAI_DEFAULT_API_VERSION);
+                       //apiVersion = AAIConstants.AAI_DEFAULT_API_VERSION;
+               }
+               return apiVersion;
+       }
+}