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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 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.SvcLogicGraph;
import org.onap.ccsdk.sli.core.sli.SvcLogicNode;
import org.onap.ccsdk.sli.core.sli.SvcLogicStore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class CallNodeExecutor extends SvcLogicNodeExecutor {
private static final Logger LOG = LoggerFactory
.getLogger(CallNodeExecutor.class);
@Override
public SvcLogicNode execute(SvcLogicService svc, SvcLogicNode node, SvcLogicContext ctx)
throws SvcLogicException {
String outValue = "not-found";
SvcLogicGraph myGraph = node.getGraph();
if (myGraph == null)
{
LOG.debug("execute: getGraph returned null");
}
else
{
LOG.debug("execute: got SvcLogicGraph");
}
SvcLogicExpression moduleExpr = null;
String module = null;
moduleExpr = node.getAttribute("module");
if (moduleExpr != null)
{
module = SvcLogicExpressionResolver.evaluate(moduleExpr, node, ctx);
}
if ((module == null) || (module.length() == 0))
{
if (myGraph != null)
{
module = myGraph.getModule();
LOG.debug("myGraph.getModule() returned "+module);
}
}
SvcLogicExpression rpcExpr = null;
String rpc = null;
rpcExpr = node.getAttribute("rpc");
if (rpcExpr != null)
{
rpc = SvcLogicExpressionResolver.evaluate(rpcExpr, node, ctx);
}
if ((rpc == null) || (rpc.length() == 0))
{
if (myGraph != null)
{
rpc = myGraph.getRpc();
LOG.debug("myGraph.getRpc() returned "+rpc);
}
}
String mode = null;
moduleExpr = node.getAttribute("mode");
if (moduleExpr != null)
{
mode = SvcLogicExpressionResolver.evaluate(moduleExpr, node, ctx);
}
if ((mode == null) || (mode.length() == 0))
{
if (myGraph != null)
{
mode = myGraph.getMode();
LOG.debug("myGraph.getMode() returned "+mode);
}
}
String version = null;
moduleExpr = node.getAttribute("version");
if (moduleExpr != null)
{
version = SvcLogicExpressionResolver.evaluate(moduleExpr, node, ctx);
}
String parentGraph = ctx.getAttribute("currentGraph");
ctx.setAttribute("parentGraph", parentGraph);
SvcLogicStore store = svc.getStore();
String errorMessage = "Parent " + parentGraph + " failed to call child [" + module + "," + rpc + "," + version + "," + mode + "] because the graph could not be found";
boolean graphWasCalled = false;
if (store != null) {
SvcLogicGraph calledGraph = store.fetch(module, rpc, version, mode);
if (calledGraph != null) {
LOG.debug("Parent " + parentGraph + " is calling child " + calledGraph.toString());
ctx.setAttribute("currentGraph", calledGraph.toString());
svc.execute(calledGraph, ctx);
outValue = ctx.getStatus();
graphWasCalled = true;
} else {
LOG.debug(errorMessage);
}
} else {
LOG.debug("Could not get SvcLogicStore reference");
}
SvcLogicNode nextNode = node.getOutcomeValue(outValue);
if (nextNode != null) {
if (LOG.isDebugEnabled()) {
LOG.debug("about to execute " + outValue + " branch");
}
ctx.setAttribute("currentGraph", parentGraph);
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");
}
}
if (graphWasCalled == false) {
if (node.getOutcomeValue("catch") != null) {
nextNode = node.getOutcomeValue("catch");
LOG.debug("graph could not be called, but catch node was found and will be executed");
} else {
LOG.debug("graph could not be called and no catch node was found, throwing exception");
throw new SvcLogicException(errorMessage);
}
}
ctx.setAttribute("currentGraph", parentGraph);
ctx.setAttribute("parentGraph", null);
return (nextNode);
}
}
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