[POLICY-73] replace openecomp for policy-engine

[policy/engine.git] / ONAP-PAP-REST / src / main / java / org / onap / policy / pap / xacml / rest / components / SafePolicyBuilder.java

diff --git a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/SafePolicyBuilder.java b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/SafePolicyBuilder.java
new file mode 100644 (file)
index 0000000..ba5b002
--- /dev/null
+++ b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/SafePolicyBuilder.java
@@ -0,0 +1,86 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP-PAP-REST
+ * ================================================================================
+ * 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.onap.policy.pap.xacml.rest.components;
+
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.onap.policy.common.logging.eelf.PolicyLogger;
+import org.onap.policy.controlloop.policy.guard.ControlLoopGuard;
+import org.yaml.snakeyaml.Yaml;
+import org.yaml.snakeyaml.constructor.Constructor;
+
+public class SafePolicyBuilder {
+       
+       private SafePolicyBuilder(){
+               //Private Constructor. 
+       }
+
+       public static ControlLoopGuard loadYamlGuard(String specification) {
+               //
+               // Read the yaml into our Java Object
+               //
+               PolicyLogger.info("Requested YAML to convert : " + specification);
+               Yaml yaml = new Yaml(new Constructor(ControlLoopGuard.class));
+               Object obj = yaml.load(specification);
+               return (ControlLoopGuard) obj;
+       }
+       
+       public static String generateXacmlGuard(String xacmlFileContent,Map<String, String> generateMap, List<String> blacklist, List<String> targets) {
+               //Setup default values and Targets. 
+               StringBuilder targetRegex= new StringBuilder(".*|");
+               if(targets!=null && !targets.isEmpty()){
+                       targetRegex = new StringBuilder();
+            for(String t : targets){
+               targetRegex.append(t + "|");
+            }
+               }
+               if(generateMap.get("clname")==null|| generateMap.get("clname").isEmpty()){
+                       generateMap.put("clname",".*");
+               }
+               generateMap.put("targets", targetRegex.toString().substring(0, targetRegex.length()-1));
+               // Replace values. 
+               for(Map.Entry<String,String> map: generateMap.entrySet()){
+                       Pattern p = Pattern.compile("\\$\\{" +map.getKey() +"\\}");
+                       Matcher m = p.matcher(xacmlFileContent);
+                       String finalInput = map.getValue();
+                       if(finalInput.contains("$")){
+                               finalInput = finalInput.replace("$", "\\$");
+                       }
+                       xacmlFileContent=m.replaceAll(finalInput);
+               }
+               if(blacklist!=null && !blacklist.isEmpty()){
+                       StringBuilder rule = new StringBuilder();
+                       for(String blackListName : blacklist){
+                               if(blackListName.contains("$")){
+                                       blackListName = blackListName.replace("$", "\\$");
+                               }
+                               rule.append("<AttributeValue DataType=\"http://www.w3.org/2001/XMLSchema#string\">"+blackListName+"</AttributeValue>");
+                       }
+                       Pattern p = Pattern.compile("\\$\\{blackListElement\\}");
+                       Matcher m = p.matcher(xacmlFileContent);
+                       xacmlFileContent=m.replaceAll(rule.toString());
+               }
+               PolicyLogger.info("Generated XACML from the YAML Spec: \n" + xacmlFileContent);
+               return xacmlFileContent;
+       }
+}