core/log: encode category log levels

src/core/logging.cpp

@@ -17,6 +17,7 @@
 #include <qnamespace.h>
 #include <qobject.h>
 #include <qobjectdefs.h>
+#include <qpair.h>
 #include <qstring.h>
 #include <qstringview.h>
 #include <qsysinfo.h>
@@ -200,16 +201,15 @@ void LogManager::filterCategory(QLoggingCategory* category) {
 
 	if (isQs && !instance->sparse) {
 		// We assume the category name pointer will always be the same and be comparable in the message handler.
-		LogManager::instance()->sparseFilters.insert(
-		    static_cast<const void*>(category->categoryName()),
-		    filter
-		);
+		instance->sparseFilters.insert(static_cast<const void*>(category->categoryName()), filter);
 
 		// all enabled by default
 		CategoryFilter().apply(category);
 	} else {
 		filter.apply(category);
 	}
+
+	instance->allFilters.insert(categoryName, filter);
 }
 
 LogManager* LogManager::instance() {
@@ -269,6 +269,10 @@ QString LogManager::rulesString() const { return this->mRulesString; }
 QtMsgType LogManager::defaultLevel() const { return this->mDefaultLevel; }
 bool LogManager::isSparse() const { return this->sparse; }
 
+CategoryFilter LogManager::getFilter(QLatin1StringView category) {
+	return this->allFilters.value(category);
+}
+
 void LoggingThreadProxy::initInThread() {
 	this->logging = new ThreadLogging(this);
 	this->logging->init();
@@ -527,7 +531,7 @@ bool DeviceReader::readU64(quint64* data) {
 void EncodedLogWriter::setDevice(QIODevice* target) { this->buffer.setDevice(target); }
 void EncodedLogReader::setDevice(QIODevice* source) { this->reader.setDevice(source); }
 
-constexpr quint8 LOG_VERSION = 1;
+constexpr quint8 LOG_VERSION = 2;
 
 bool EncodedLogWriter::writeHeader() {
 	this->buffer.writeU8(LOG_VERSION);
@@ -673,7 +677,7 @@ start:
 		QByteArray body;
 		if (!this->readString(&body)) return false;
 
-		*slot = LogMessage(msgType, QLatin1StringView(category), body, this->lastMessageTime);
+		*slot = LogMessage(msgType, QLatin1StringView(category.first), body, this->lastMessageTime);
 		slot->readCategoryId = categoryId;
 	}
 
@@ -681,6 +685,10 @@ start:
 	return true;
 }
 
+CategoryFilter EncodedLogReader::categoryFilterById(quint16 id) {
+	return this->categories.value(id).second;
+}
+
 void EncodedLogWriter::writeOp(EncodedLogOpcode opcode) { this->buffer.writeU8(opcode); }
 
 void EncodedLogWriter::writeVarInt(quint32 n) {
@@ -742,14 +750,31 @@ quint16 EncodedLogWriter::getOrCreateCategory(QLatin1StringView category) {
 		auto id = this->nextCategory++;
 		this->categories.insert(category, id);
 
+		auto filter = LogManager::instance()->getFilter(category);
+		quint8 flags = 0;
+		flags |= filter.debug << 0;
+		flags |= filter.info << 1;
+		flags |= filter.warn << 2;
+		flags |= filter.critical << 3;
+
+		this->buffer.writeU8(flags);
 		return id;
 	}
 }
 
 bool EncodedLogReader::registerCategory() {
 	QByteArray name;
+	quint8 flags = 0;
 	if (!this->readString(&name)) return false;
-	this->categories.append(name);
+	if (!this->reader.readU8(&flags)) return false;
+
+	CategoryFilter filter;
+	filter.debug = (flags >> 0) & 1;
+	filter.info = (flags >> 1) & 1;
+	filter.warn = (flags >> 2) & 1;
+	filter.critical = (flags >> 3) & 1;
+
+	this->categories.append(qMakePair(name, filter));
 	return true;
 }
 
@@ -789,6 +814,8 @@ bool LogReader::continueReading() {
 		if (this->filters.contains(message.readCategoryId)) {
 			filter = this->filters.value(message.readCategoryId);
 		} else {
+			filter = this->reader.categoryFilterById(message.readCategoryId);
+
 			for (const auto& rule: this->rules) {
 				filter.applyRule(message.category, rule);
 			}

src/core/logging.hpp

@@ -110,6 +110,8 @@ public:
 	[[nodiscard]] QtMsgType defaultLevel() const;
 	[[nodiscard]] bool isSparse() const;
 
+	[[nodiscard]] CategoryFilter getFilter(QLatin1StringView category);
+
 signals:
 	void logMessage(LogMessage msg, bool showInSparse);
 
@@ -126,6 +128,7 @@ private:
 	QList<qt_logging_registry::QLoggingRule>* rules = nullptr;
 	QtMsgType mDefaultLevel = QtWarningMsg;
 	QHash<const void*, CategoryFilter> sparseFilters;
+	QHash<QLatin1StringView, CategoryFilter> allFilters;
 
 	QTextStream stdoutStream;
 	LoggingThreadProxy threadProxy;

src/core/logging_p.hpp

@@ -94,6 +94,7 @@ public:
 	[[nodiscard]] bool readHeader(bool* success, quint8* logVersion, quint8* readerVersion);
 	// WARNING: log messages written to the given slot are invalidated when the log reader is destroyed.
 	[[nodiscard]] bool read(LogMessage* slot);
+	[[nodiscard]] CategoryFilter categoryFilterById(quint16 id);
 
 private:
 	[[nodiscard]] bool readVarInt(quint32* slot);
@@ -101,7 +102,7 @@ private:
 	[[nodiscard]] bool registerCategory();
 
 	DeviceReader reader;
-	QVector<QByteArray> categories;
+	QVector<QPair<QByteArray, CategoryFilter>> categories;
 	QDateTime lastMessageTime = QDateTime::fromSecsSinceEpoch(0);
 	RingBuffer<LogMessage> recentMessages {256};
 };