Initial commit for OpenECOMP SDN-C N-C core

[sdnc/core.git] / sli / provider / src / main / java / org / openecomp / sdnc / sli / provider / ExecuteNodeExecutor.java

diff --git a/sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/ExecuteNodeExecutor.java b/sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/ExecuteNodeExecutor.java
new file mode 100644 (file)
index 0000000..d6c7a8d
--- /dev/null
+++ b/sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/ExecuteNodeExecutor.java
@@ -0,0 +1,138 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : SDN-C
+ * ================================================================================
+ * 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.sdnc.sli.provider;
+
+import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+
+import org.openecomp.sdnc.sli.SvcLogicAdaptor;
+import org.openecomp.sdnc.sli.SvcLogicContext;
+import org.openecomp.sdnc.sli.SvcLogicException;
+import org.openecomp.sdnc.sli.SvcLogicExpression;
+import org.openecomp.sdnc.sli.SvcLogicJavaPlugin;
+import org.openecomp.sdnc.sli.SvcLogicNode;
+import org.openecomp.sdnc.sli.SvcLogicResource;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.FrameworkUtil;
+import org.osgi.framework.ServiceReference;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ExecuteNodeExecutor extends SvcLogicNodeExecutor {
+       private static final Logger LOG = LoggerFactory
+                       .getLogger(ExecuteNodeExecutor.class);
+
+       public SvcLogicNode execute(SvcLogicServiceImpl svc, SvcLogicNode node,
+                       SvcLogicContext ctx) throws SvcLogicException {
+
+               String pluginName = SvcLogicExpressionResolver.evaluate(
+                               node.getAttribute("plugin"), node, ctx);
+               String outValue = "failure";
+
+               if (LOG.isDebugEnabled()) {
+                       LOG.debug("execute node encountered - looking for plugin "
+                                       + pluginName);
+               }
+               
+               BundleContext bctx = FrameworkUtil.getBundle(this.getClass())
+                               .getBundleContext();
+
+               ServiceReference sref = bctx.getServiceReference(pluginName);
+
+               if (sref == null) {
+                       outValue = "not-found";
+               } else {
+                       SvcLogicJavaPlugin plugin  = (SvcLogicJavaPlugin) bctx
+                                       .getService(sref);
+                       
+                       String methodName = SvcLogicExpressionResolver.evaluate(node.getAttribute("method"),  node, ctx);
+                       
+                       Class pluginClass = plugin.getClass();
+                       
+                       Method pluginMethod = null;
+                       
+                       try {
+                               pluginMethod = pluginClass.getMethod(methodName, Map.class, SvcLogicContext.class);
+                       } catch (Exception e) {
+                               LOG.error("Caught exception looking for method "+pluginName+"."+methodName+"(Map, SvcLogicContext)");
+                       }
+                       
+                       if (pluginMethod == null) {
+                               outValue = "unsupported-method";
+                       } else {
+                               try {
+                                       
+                                       Map<String, String> parmMap = new HashMap<String, String>();
+
+                                       Set<Map.Entry<String, SvcLogicExpression>> parmSet = node
+                                                       .getParameterSet();
+
+                                       for (Iterator<Map.Entry<String, SvcLogicExpression>> iter = parmSet
+                                                       .iterator(); iter.hasNext();) {
+                                               Map.Entry<String, SvcLogicExpression> curEnt = iter.next();
+                                               String curName = curEnt.getKey();
+                                               SvcLogicExpression curExpr = curEnt.getValue();
+                                               String curExprValue = SvcLogicExpressionResolver.evaluate(curExpr, node, ctx);
+                                               
+                                               LOG.debug("Parameter "+curName+" = "+curExpr.asParsedExpr()+" resolves to "+curExprValue);
+
+                                               parmMap.put(curName,curExprValue);
+                                       }
+                                       
+                                       pluginMethod.invoke(plugin, parmMap, ctx);
+                                       
+                                       outValue = "success";
+                               } catch (Exception e) {
+                                       LOG.error("Caught exception executing "+pluginName+"."+methodName, e);
+                                       
+                                       outValue = "failure";
+                                       ctx.setStatus("failure");
+                               }
+                       }
+
+               }
+
+               SvcLogicNode nextNode = node.getOutcomeValue(outValue);
+               if (nextNode != null) {
+                       if (LOG.isDebugEnabled()) {
+                               LOG.debug("about to execute " + outValue + " branch");
+                       }
+                       return (nextNode);
+               }
+
+               nextNode = node.getOutcomeValue("Other");
+               if (nextNode != null) {
+                       if (LOG.isDebugEnabled()) {
+                               LOG.debug("about to execute Other branch");
+                       }
+               } else {
+                       if (LOG.isDebugEnabled()) {
+                               LOG.debug("no " + outValue + " or Other branch found");
+                       }
+               }
+               return (nextNode);
+       }
+
+}