##// END OF EJS Templates
Reads variable metadata to get the data type...
Reads variable metadata to get the data type The data type is then parsed to determine the value type expected when reading result file

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AmdaProvider.cpp
168 lines | 5.7 KiB | text/x-c | CppLexer
#include "AmdaProvider.h"
#include "AmdaDefs.h"
#include "AmdaResultParser.h"
#include <Common/DateUtils.h>
#include <Data/DataProviderParameters.h>
#include <Network/NetworkController.h>
#include <SqpApplication.h>
#include <Variable/Variable.h>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QTemporaryFile>
#include <QThread>
Q_LOGGING_CATEGORY(LOG_AmdaProvider, "AmdaProvider")
namespace {
/// URL format for a request on AMDA server. The parameters are as follows:
/// - %1: start date
/// - %2: end date
/// - %3: parameter id
const auto AMDA_URL_FORMAT = QStringLiteral(
"http://amda.irap.omp.eu/php/rest/"
"getParameter.php?startTime=%1&stopTime=%2&parameterID=%3&outputFormat=ASCII&"
"timeFormat=ISO8601&gzip=0");
/// Dates format passed in the URL (e.g 2013-09-23T09:00)
const auto AMDA_TIME_FORMAT = QStringLiteral("yyyy-MM-ddThh:mm:ss");
/// Formats a time to a date that can be passed in URL
QString dateFormat(double sqpRange) noexcept
{
auto dateTime = DateUtils::dateTime(sqpRange);
return dateTime.toString(AMDA_TIME_FORMAT);
}
AmdaResultParser::ValueType valueType(const QString &valueType)
{
if (valueType == QStringLiteral("scalar")) {
return AmdaResultParser::ValueType::SCALAR;
}
else if (valueType == QStringLiteral("vector")) {
return AmdaResultParser::ValueType::VECTOR;
}
else {
return AmdaResultParser::ValueType::UNKNOWN;
}
}
} // namespace
AmdaProvider::AmdaProvider()
{
qCDebug(LOG_AmdaProvider()) << tr("AmdaProvider::AmdaProvider") << QThread::currentThread();
if (auto app = sqpApp) {
auto &networkController = app->networkController();
connect(this, SIGNAL(requestConstructed(QNetworkRequest, QUuid,
std::function<void(QNetworkReply *, QUuid)>)),
&networkController,
SLOT(onProcessRequested(QNetworkRequest, QUuid,
std::function<void(QNetworkReply *, QUuid)>)));
connect(&sqpApp->networkController(), SIGNAL(replyDownloadProgress(QUuid, double)), this,
SIGNAL(dataProvidedProgress(QUuid, double)));
}
}
void AmdaProvider::requestDataLoading(QUuid acqIdentifier, const DataProviderParameters &parameters)
{
// NOTE: Try to use multithread if possible
const auto times = parameters.m_Times;
const auto data = parameters.m_Data;
for (const auto &dateTime : qAsConst(times)) {
this->retrieveData(acqIdentifier, dateTime, data);
// TORM
// QThread::msleep(200);
}
}
void AmdaProvider::requestDataAborting(QUuid acqIdentifier)
{
if (auto app = sqpApp) {
auto &networkController = app->networkController();
networkController.onReplyCanceled(acqIdentifier);
}
}
void AmdaProvider::retrieveData(QUuid token, const SqpRange &dateTime, const QVariantHash &data)
{
// Retrieves product ID from data: if the value is invalid, no request is made
auto productId = data.value(AMDA_XML_ID_KEY).toString();
if (productId.isNull()) {
qCCritical(LOG_AmdaProvider()) << tr("Can't retrieve data: unknown product id");
return;
}
qCDebug(LOG_AmdaProvider()) << tr("AmdaProvider::retrieveData") << dateTime;
// Retrieves the data type that determines whether the expected format for the result file is
// scalar, vector...
auto productValueType = valueType(data.value(AMDA_DATA_TYPE_KEY).toString());
// /////////// //
// Creates URL //
// /////////// //
auto startDate = dateFormat(dateTime.m_TStart);
auto endDate = dateFormat(dateTime.m_TEnd);
auto url = QUrl{QString{AMDA_URL_FORMAT}.arg(startDate, endDate, productId)};
qCInfo(LOG_AmdaProvider()) << tr("TORM AmdaProvider::retrieveData url:") << url;
auto tempFile = std::make_shared<QTemporaryFile>();
// LAMBDA
auto httpDownloadFinished = [this, dateTime, tempFile,
productValueType](QNetworkReply *reply, QUuid dataId) noexcept {
// Don't do anything if the reply was abort
if (reply->error() != QNetworkReply::OperationCanceledError) {
if (tempFile) {
auto replyReadAll = reply->readAll();
if (!replyReadAll.isEmpty()) {
tempFile->write(replyReadAll);
}
tempFile->close();
// Parse results file
if (auto dataSeries
= AmdaResultParser::readTxt(tempFile->fileName(), productValueType)) {
emit dataProvided(dataId, dataSeries, dateTime);
}
else {
/// @todo ALX : debug
}
}
}
};
auto httpFinishedLambda
= [this, httpDownloadFinished, tempFile](QNetworkReply *reply, QUuid dataId) noexcept {
// Don't do anything if the reply was abort
if (reply->error() != QNetworkReply::OperationCanceledError) {
auto downloadFileUrl = QUrl{QString{reply->readAll()}};
qCInfo(LOG_AmdaProvider())
<< tr("TORM AmdaProvider::retrieveData downloadFileUrl:") << downloadFileUrl;
// Executes request for downloading file //
// Creates destination file
if (tempFile->open()) {
// Executes request
emit requestConstructed(QNetworkRequest{downloadFileUrl}, dataId,
httpDownloadFinished);
}
}
};
// //////////////// //
// Executes request //
// //////////////// //
emit requestConstructed(QNetworkRequest{url}, token, httpFinishedLambda);
}