package com.epam.wilma.webapp.stub.response.formatter.xsl;
/*==========================================================================
Copyright 2013-2017 EPAM Systems
This file is part of Wilma.
Wilma is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Wilma is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Wilma. If not, see <http://www.gnu.org/licenses/>.
===========================================================================*/
import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.epam.wilma.common.helper.FileFactory;
import com.epam.wilma.common.helper.FileUtils;
import com.epam.wilma.domain.http.WilmaHttpRequest;
import com.epam.wilma.domain.stubconfig.StubResourcePathProvider;
import com.epam.wilma.domain.stubconfig.dialog.response.template.TemplateFormatter;
import com.epam.wilma.domain.stubconfig.parameter.Parameter;
import com.epam.wilma.domain.stubconfig.parameter.ParameterList;
import com.epam.wilma.webapp.domain.exception.TemplateFormattingFailedException;
import javax.servlet.http.HttpServletResponse;
/**
* Creates a response based on an XSL file and template XML using the request body.
* The XSL file name always has to be defined as a template formatter param in the
* stub configuration!!!
* @author Tamas_Bihari
*
*/
@Component
public class XslBasedTemplateFormatter implements TemplateFormatter {
@Autowired
private FileUtils fileUtils;
@Autowired
private FileFactory fileFactory;
@Autowired
private StubResourcePathProvider stubResourcePathProvider;
@Autowired
private XslResponseGenerator xslResponseGenerator;
@Override
public byte[] formatTemplate(final WilmaHttpRequest wilmaRequest, final HttpServletResponse resp,
final byte[] templateResource, final ParameterList params) throws Exception {
String xslResourcePath = checkAndGetXslResourcePath(params);
byte[] xslResource = readXslResourceFromFileSystem(xslResourcePath);
byte[] requestXmlResource = wilmaRequest.getBody().getBytes(StandardCharsets.UTF_8);
return xslResponseGenerator.generateResponse(requestXmlResource, xslResource, templateResource);
}
private byte[] readXslResourceFromFileSystem(final String xslResourcePath) {
File xslFile = fileFactory.createFile(xslResourcePath);
byte[] result;
try {
result = fileUtils.getFileAsByteArray(xslFile);
} catch (IOException e) {
throw new TemplateFormattingFailedException(
"The previously defined xslFile='" + xslResourcePath + "' can not be read or does not exist.", e);
}
return result;
}
private String checkAndGetXslResourcePath(final ParameterList params) {
List<Parameter> paramList = params.getAllParameters();
String xslResourceName = "";
if (paramList.size() == 1) {
xslResourceName = paramList.get(0).getValue();
} else {
throw new TemplateFormattingFailedException(
"The XslBasedTemplateFormatter must have one parameter in stub configuration to define necessary xsl template file.");
}
return (stubResourcePathProvider.getTemplatesPathAsString() + "/" + xslResourceName).replace("\\", "/");
}
}