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1 | 1 | #include "AmdaParser.h" |
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2 | 2 | |
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3 | 3 | #include <DataSource/DataSourceItem.h> |
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4 | 4 | |
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5 | #include <QFile> | |
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6 | #include <QJsonDocument> | |
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7 | #include <QJsonObject> | |
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8 | ||
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5 | 9 | Q_LOGGING_CATEGORY(LOG_AmdaParser, "AmdaParser") |
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6 | 10 | |
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11 | namespace { | |
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12 | ||
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13 | // Significant keys of an AMDA's JSON file | |
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14 | const auto ROOT_KEY = QStringLiteral("dataCenter"); | |
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15 | ||
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16 | } // namespace | |
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17 | ||
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7 | 18 | std::unique_ptr<DataSourceItem> AmdaParser::readJson(const QString &filePath) noexcept |
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8 | 19 | { |
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20 | QFile jsonFile{filePath}; | |
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21 | ||
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22 | if (!jsonFile.open(QIODevice::ReadOnly | QIODevice::Text)) { | |
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23 | qCCritical(LOG_AmdaParser()) | |
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24 | << QObject::tr("Can't retrieve data source tree from file %1: %2") | |
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25 | .arg(filePath, jsonFile.errorString()); | |
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26 | return nullptr; | |
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27 | } | |
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28 | ||
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29 | auto json = jsonFile.readAll(); | |
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30 | auto jsonDocument = QJsonDocument::fromJson(json); | |
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31 | ||
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32 | // Check preconditions for parsing | |
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33 | if (!jsonDocument.isObject()) { | |
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34 | qCCritical(LOG_AmdaParser()) | |
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35 | << QObject::tr( | |
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36 | "Can't retrieve data source tree from file %1: the file is malformed (there is " | |
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37 | "not one and only one root object)") | |
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38 | .arg(filePath); | |
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39 | return nullptr; | |
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40 | } | |
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41 | ||
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42 | auto jsonDocumentObject = jsonDocument.object(); | |
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43 | if (!jsonDocumentObject.contains(ROOT_KEY)) { | |
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44 | qCCritical(LOG_AmdaParser()) | |
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45 | << QObject::tr( | |
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46 | "Can't retrieve data source tree from file %1: the file is malformed (the key " | |
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47 | "for the root element was not found (%2))") | |
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48 | .arg(filePath, ROOT_KEY); | |
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49 | return nullptr; | |
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50 | } | |
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51 | ||
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52 | auto rootValue = jsonDocumentObject.value(ROOT_KEY); | |
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53 | if (!rootValue.isObject()) { | |
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54 | qCCritical(LOG_AmdaParser()) | |
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55 | << QObject::tr( | |
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56 | "Can't retrieve data source tree from file %1: the file is malformed (the root " | |
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57 | "element is of the wrong type)") | |
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58 | .arg(filePath); | |
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59 | return nullptr; | |
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60 | } | |
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9 | 61 | /// @todo ALX |
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10 | 62 | return nullptr; |
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11 | 63 | } |
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