bool JsonClientConnection::checkJson(const Json::Value & message, const QString & schemaResource, std::string & errorMessage)
{
// read the json schema from the resource
QResource schemaData(schemaResource);
assert(schemaData.isValid());
Json::Reader jsonReader;
Json::Value schemaJson;
if (!jsonReader.parse(reinterpret_cast<const char *>(schemaData.data()), reinterpret_cast<const char *>(schemaData.data()) + schemaData.size(), schemaJson, false))
{
throw std::runtime_error("Schema error: " + jsonReader.getFormattedErrorMessages()) ;
}
// create schema checker
JsonSchemaChecker schema;
schema.setSchema(schemaJson);
// check the message
if (!schema.validate(message))
{
const std::list<std::string> & errors = schema.getMessages();
std::stringstream ss;
ss << "{";
foreach (const std::string & error, errors) {
ss << error << " ";
}
ss << "}";
errorMessage = ss.str();
return false;
}
return true;
}
void XercesParser::initialiseSchema(XERCES_CPP_NAMESPACE::SAX2XMLReader* reader, const String& schemaName, const String& xmlFilename, const String& resourceGroup)
{
XERCES_CPP_NAMESPACE_USE;
// enable schema use and set validation options
reader->setFeature(XMLUni::fgXercesSchema, true);
reader->setFeature(XMLUni::fgSAX2CoreValidation, true);
reader->setFeature(XMLUni::fgXercesValidationErrorAsFatal, true);
// load in the raw schema data
RawDataContainer rawSchemaData;
// try base filename first, from default resource group
try
{
Logger::getSingleton().logEvent("XercesParser::initialiseSchema - Attempting to load schema from file '" + schemaName + "'.");
System::getSingleton().getResourceProvider()->loadRawDataContainer(schemaName, rawSchemaData, d_defaultSchemaResourceGroup);
}
// oops, no file. Try an alternative instead, using base path and
// resource group from the XML file we're going to be processing.
catch(InvalidRequestException)
{
// get path from filename
String schemaFilename;
size_t pos = xmlFilename.rfind("/");
if (pos == String::npos) pos = xmlFilename.rfind("\\");
if (pos != String::npos) schemaFilename.assign(xmlFilename, 0, pos + 1);
// append schema filename
schemaFilename += schemaName;
// re-try the load operation.
Logger::getSingleton().logEvent("XercesParser::initialiseSchema - Attempting to load schema from file '" + schemaFilename + "'.");
System::getSingleton().getResourceProvider()->loadRawDataContainer(schemaFilename, rawSchemaData, resourceGroup);
}
// wrap schema data in a xerces MemBufInputSource object
MemBufInputSource schemaData(
rawSchemaData.getDataPtr(),
static_cast<const unsigned int>(rawSchemaData.getSize()),
schemaName.c_str(),
false);
reader->loadGrammar(schemaData, Grammar::SchemaGrammarType, true);
// enable grammar reuse
reader->setFeature(XMLUni::fgXercesUseCachedGrammarInParse, true);
// set schema for usage
XMLCh* pval = XMLString::transcode(schemaName.c_str());
reader->setProperty(XMLUni::fgXercesSchemaExternalNoNameSpaceSchemaLocation, pval);
XMLString::release(&pval);
Logger::getSingleton().logEvent("XercesParser::initialiseSchema - XML schema file '" + schemaName + "' has been initialised.");
// use resource provider to release loaded schema data (if it supports this)
System::getSingleton().getResourceProvider()->unloadRawDataContainer(rawSchemaData);
}
Json::Value loadConfig(const std::string & configFile)
{
// make sure the resources are loaded (they may be left out after static linking)
Q_INIT_RESOURCE(resource);
// read the json schema from the resource
QResource schemaData(":/hyperion-schema");
assert(schemaData.isValid());
Json::Reader jsonReader;
Json::Value schemaJson;
if (!jsonReader.parse(reinterpret_cast<const char *>(schemaData.data()), reinterpret_cast<const char *>(schemaData.data()) + schemaData.size(), schemaJson, false))
{
throw std::runtime_error("Schema error: " + jsonReader.getFormattedErrorMessages()) ;
}
JsonSchemaChecker schemaChecker;
schemaChecker.setSchema(schemaJson);
const Json::Value jsonConfig = JsonFactory::readJson(configFile);
schemaChecker.validate(jsonConfig);
return jsonConfig;
}
bool loadConfig(const QString & configFile)
{
// make sure the resources are loaded (they may be left out after static linking)
Q_INIT_RESOURCE(resource);
QJsonParseError error;
////////////////////////////////////////////////////////////
// read and set the json schema from the resource
////////////////////////////////////////////////////////////
QFile schemaData(":/hyperion-schema");
if (!schemaData.open(QIODevice::ReadOnly))
{
std::stringstream error;
error << "Schema not found: " << schemaData.errorString().toStdString();
throw std::runtime_error(error.str());
}
QByteArray schema = schemaData.readAll();
QJsonDocument schemaJson = QJsonDocument::fromJson(schema, &error);
if (error.error != QJsonParseError::NoError)
{
// report to the user the failure and their locations in the document.
int errorLine(0), errorColumn(0);
for( int i=0, count=qMin( error.offset,schema.size()); i<count; ++i )
{
++errorColumn;
if(schema.at(i) == '\n' )
{
errorColumn = 0;
++errorLine;
}
}
std::stringstream sstream;
sstream << "Schema error: " << error.errorString().toStdString() << " at Line: " << errorLine << ", Column: " << errorColumn;
throw std::runtime_error(sstream.str());
}
QJsonSchemaChecker schemaChecker;
schemaChecker.setSchema(schemaJson.object());
////////////////////////////////////////////////////////////
// read and validate the configuration file from the command line
////////////////////////////////////////////////////////////
const QJsonObject jsonConfig = QJsonFactory::readJson(configFile);
if (!schemaChecker.validate(jsonConfig))
{
for (std::list<std::string>::const_iterator i = schemaChecker.getMessages().begin(); i != schemaChecker.getMessages().end(); ++i)
{
std::cout << *i << std::endl;
}
std::cout << "FAILED" << std::endl;
exit(1);
return false;
}
return true;
}
