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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.openecomp.appc.simulator.client.impl;
import org.openecomp.appc.client.lcm.api.AppcClientServiceFactoryProvider;
import org.openecomp.appc.client.lcm.api.AppcLifeCycleManagerServiceFactory;
import org.openecomp.appc.client.lcm.api.ApplicationContext;
import org.openecomp.appc.client.lcm.api.LifeCycleManagerStateful;
import org.openecomp.appc.client.lcm.api.ResponseHandler;
import org.openecomp.appc.client.lcm.exceptions.AppcClientException;
import org.openecomp.appc.simulator.client.RequestHandler;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Properties;
public class JsonRequestHandler implements RequestHandler {
private enum modeT {
SYNCH,
ASYNCH
}
public static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
private String rpcName = null;
private String inputClassName = null;
private String actionName = null;
private String methodName = null;
String packageName = null;
private LifeCycleManagerStateful service = null;
private Properties properties;
HashMap<String, String> exceptRpcMap = null;
private final EELFLogger LOG = EELFManager.getInstance().getLogger(JsonRequestHandler.class);
private AppcLifeCycleManagerServiceFactory appcLifeCycleManagerServiceFactory = null;
public JsonRequestHandler(Properties prop) throws AppcClientException {
properties = prop;
packageName = properties.getProperty("ctx.model.package") + ".";
try {
service = createService();
} catch (AppcClientException e) {
e.printStackTrace();
}
exceptRpcMap = prepareExceptionsMap();
}
private HashMap<String,String> prepareExceptionsMap() {
exceptRpcMap = new HashMap<>();
try (BufferedReader reader = new BufferedReader(
new FileReader(properties.getProperty(
"client.rpc.exceptions.map.file")))) {
String line;
while ((line = reader.readLine()) != null) {
String[] parts = line.split(":", 2);
if (parts.length >= 2) {
String key = parts[0];
String value = parts[1];
exceptRpcMap.put(key, value);
} else {
System.out.println("ignoring line: " + line);
}
}
} catch (FileNotFoundException e) {
return exceptRpcMap;
} catch (IOException e) {
e.printStackTrace();
}
return exceptRpcMap;
}
@Override
public void proceedFile(File source, File log) throws IOException {
final JsonNode inputNode = OBJECT_MAPPER.readTree(source);
try {
// proceed with inputNode and get some xxxInput object, depends on action
prepareNames(inputNode);
Object input = prepareObject(inputNode);
JsonResponseHandler response = new JsonResponseHandler();
response.setFile(source.getPath().toString());
switch (isSyncMode(inputNode)) {
case SYNCH: {
LOG.debug("Received input request will be processed in synchronously mode");
Method rpc = LifeCycleManagerStateful.class.getDeclaredMethod(methodName, input.getClass());
response.onResponse(rpc.invoke(service, input));
break;
}
case ASYNCH: {
LOG.debug("Received input request will be processed in asynchronously mode");
Method rpc = LifeCycleManagerStateful.class.getDeclaredMethod(methodName, input.getClass(), ResponseHandler.class);
rpc.invoke(service, input, response);
break;
}
default: {
throw new RuntimeException("Unrecognized request mode");
}
}
}
catch(Exception ex){
//ex.printStackTrace();
}
LOG.debug("Action <" + actionName + "> from input file <" + source.getPath().toString() + "> processed");
}
private modeT isSyncMode(JsonNode inputNode) {
// The following solution is for testing purposes only
// the sync/async decision logic may change upon request
try {
int mode = Integer.parseInt(inputNode.findValue("input").findValue("common-header").findValue("sub-request-id").asText());
if ((mode % 2) == 0) {
return modeT.SYNCH;
}
}catch (Exception ex) {
//use ASYNC as default, if value is not integer.
}
return modeT.ASYNCH;
}
private LifeCycleManagerStateful createService() throws AppcClientException {
appcLifeCycleManagerServiceFactory = AppcClientServiceFactoryProvider.getFactory(AppcLifeCycleManagerServiceFactory.class);
return appcLifeCycleManagerServiceFactory.createLifeCycleManagerStateful(new ApplicationContext(), properties);
}
public void shutdown(boolean isForceShutdown){
appcLifeCycleManagerServiceFactory.shutdownLifeCycleManager(isForceShutdown);
}
public Object prepareObject(JsonNode input) {
try {
Class cls = Class.forName(inputClassName);
try {
// since payload is not mandatory field and not all actions contains payload
// so we have to check that during input parsing
alignPayload(input);
} catch (NoSuchFieldException e) {
LOG.debug("In " + actionName + " no payload defined");
}
return OBJECT_MAPPER.treeToValue(input.get("input"), cls);
}
catch(Exception ex){
//ex.printStackTrace();
}
return null;
}
private void prepareNames(JsonNode input) throws NoSuchFieldException {
JsonNode inputNode = input.findValue("input");
actionName = inputNode.findValue("action").asText();
if (actionName.isEmpty()) {
throw new NoSuchFieldException("Input doesn't contains field <action>");
}
rpcName = prepareRpcFromAction(actionName);
inputClassName = packageName + actionName + "Input";
methodName = prepareMethodName(rpcName);
}
private void alignPayload(JsonNode input) throws NoSuchFieldException {
JsonNode inputNode = input.findValue("input");
JsonNode payload = inputNode.findValue("payload");
if (payload == null || payload.asText().isEmpty() || payload.toString().isEmpty())
throw new NoSuchFieldException("Input doesn't contains field <payload>");
String payloadData = payload.asText();
if (payloadData.isEmpty())
payloadData = payload.toString();
((ObjectNode)inputNode).put("payload", payloadData);
}
private String prepareRpcFromAction(String action) {
String rpc = checkExceptionalRpcList(action);
if (rpc!= null && !rpc.isEmpty()) {
return rpc; // we found exceptional rpc, so no need to format it
}
rpc = "";
boolean makeItLowerCase = true;
for(int i = 0; i < action.length(); i++)
{
if(makeItLowerCase) // first character will make lower case
{
rpc+=Character.toLowerCase(action.charAt(i));
makeItLowerCase = false;
}
else if((i+1 < action.length()) && Character.isUpperCase(action.charAt(i+1)))
{
rpc+=action.charAt(i) + "-";
makeItLowerCase = true;
}
else
{
rpc+=action.charAt(i);
makeItLowerCase = false;
}
}
return rpc;
}
private String checkExceptionalRpcList(String action) {
if (exceptRpcMap.isEmpty()) {
return null;
}
return exceptRpcMap.get(action);
}
private String prepareMethodName(String inputRpcName) {
boolean makeItUpperCase = false;
String method = "";
for(int i = 0; i < inputRpcName.length(); i++) //to check the characters of string..
{
if(Character.isLowerCase(inputRpcName.charAt(i)) && makeItUpperCase) // skip first character if it lower case
{
method+=Character.toUpperCase(inputRpcName.charAt(i));
makeItUpperCase = false;
}
else if(inputRpcName.charAt(i) == '-')
{
makeItUpperCase = true;
}
else
{
method+=inputRpcName.charAt(i);
makeItUpperCase = false;
}
}
return method;
}
}
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