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/*-
* ============LICENSE_START=======================================================
* ONAP : CCSDK
* ================================================================================
* 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.ccsdk.sli.core.sli.provider;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
import org.onap.ccsdk.sli.core.sli.SvcLogicException;
import org.onap.ccsdk.sli.core.sli.SvcLogicExpression;
import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;
import org.onap.ccsdk.sli.core.sli.SvcLogicNode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ExecuteNodeExecutor extends SvcLogicNodeExecutor {
private static final Logger LOG = LoggerFactory
.getLogger(ExecuteNodeExecutor.class);
private static final String pluginErrorMessage = "Could not execute plugin. SvcLogic status will be set to failure.";
public SvcLogicNode execute(SvcLogicService 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);
}
SvcLogicJavaPlugin plugin = getSvcLogicJavaPlugin(pluginName);
if (plugin == null) {
outValue = "not-found";
} else {
String methodName = evaluate(node.getAttribute("method"), node, ctx);
Class pluginClass = plugin.getClass();
Method pluginMethod = null;
try {
pluginMethod = pluginClass.getMethod(methodName, Map.class, SvcLogicContext.class);
} catch (NoSuchMethodException e) {
LOG.error(pluginErrorMessage, e);
}
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);
}
Object o = pluginMethod.invoke(plugin, parmMap, ctx);
String emitsOutcome = SvcLogicExpressionResolver.evaluate(node.getAttribute("emitsOutcome"), node, ctx);
outValue = mapOutcome(o, emitsOutcome);
} catch (InvocationTargetException e) {
if(e.getCause() != null){
LOG.error(pluginErrorMessage, e.getCause());
}else{
LOG.error(pluginErrorMessage, e);
}
outValue = "failure";
ctx.setStatus("failure");
} catch (IllegalAccessException e) {
LOG.error(pluginErrorMessage, e);
outValue = "failure";
ctx.setStatus("failure");
} catch (IllegalArgumentException e) {
LOG.error(pluginErrorMessage, e);
outValue = "failure";
ctx.setStatus("failure");
}
}
}
return (getNextNode(node, outValue));
}
protected String evaluate(SvcLogicExpression expr, SvcLogicNode node, SvcLogicContext ctx) throws SvcLogicException {
return SvcLogicExpressionResolver.evaluate(node.getAttribute("method"), node, ctx);
}
public String mapOutcome(Object o, String emitsOutcome) {
if (emitsOutcome != null) {
Boolean nodeEmitsOutcome = Boolean.valueOf(emitsOutcome);
if (nodeEmitsOutcome) {
return (String) o;
} else {
return "success";
}
} else {
return "success";
}
}
}
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