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package org.openecomp.sdc.tosca.parser.impl;
import java.io.IOException;
import java.util.List;
import org.openecomp.sdc.tosca.parser.api.ISdcCsarHelper;
import org.openecomp.sdc.tosca.parser.exceptions.SdcToscaParserException;
import org.openecomp.sdc.toscaparser.ToscaParser;
import org.openecomp.sdc.toscaparser.ToscaParserFactory;
import org.openecomp.sdc.toscaparser.api.NodeTemplate;
import org.openecomp.sdc.toscaparser.api.ToscaTemplate;
public class SdcToscaParserFactory implements AutoCloseable{
private static SdcToscaParserFactory instance;
private static ToscaParserFactory toscaParserFactory;
private SdcToscaParserFactory(){}
/**
* Get an SdcToscaParserFactory instance.
* After parsing work is done, it must be closed using the close() method.
*/
public static SdcToscaParserFactory getInstance() {
if (instance == null) {
synchronized (SdcToscaParserFactory.class) {
if (instance == null) {
instance = new SdcToscaParserFactory();
toscaParserFactory = new ToscaParserFactory();
}
}
}
return instance;
}
/**
* Get an ISdcCsarHelper object for this CSAR file.
* @param csarPath - the path to CSAR file.
* @return ISdcCsarHelper object.
* @throws SdcToscaParserException - in case the path or CSAR are invalid.
*/
public ISdcCsarHelper getSdcCsarHelper(String csarPath) throws SdcToscaParserException{
//TODO add logic to check if legal file and csar
synchronized (SdcToscaParserFactory.class) {
if (toscaParserFactory == null){
throw new SdcToscaParserException("The factory is closed. It was probably closed too soon.");
}
try {
ToscaParser create = toscaParserFactory.create();
ToscaTemplate parse = create.parse(csarPath);
SdcCsarHelperImpl sdcCsarHelperImpl = new SdcCsarHelperImpl(parse);
return sdcCsarHelperImpl;
} catch (IOException e) {
throw new SdcToscaParserException("Exception when creating the parser: "+e.getMessage());
}
}
}
/**
* Close the SdcToscaParserFactory.
*/
public void close() {
if (toscaParserFactory != null){
synchronized (SdcToscaParserFactory.class) {
if (toscaParserFactory != null) {
try {
toscaParserFactory.close();
toscaParserFactory = null;
} catch (IOException e) {
//TODO add logging
}
}
}
}
}
public static void main(String[] args) throws SdcToscaParserException {
try (SdcToscaParserFactory factory = SdcToscaParserFactory.getInstance()){ //Autoclosable
ISdcCsarHelper sdcCsarHelper = factory.getSdcCsarHelper("C:\\Users\\pa0916\\Desktop\\Work\\ASDC\\CSARs\\csar_hello_world.zip");
//Can run methods on the helper
List<NodeTemplate> allottedResources = sdcCsarHelper.getAllottedResources();
//..............
}
}
}
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