diff --git a/include/telemetry/aggFile.hpp b/include/telemetry/aggFile.hpp
index daeff6c..c0b986b 100644
--- a/include/telemetry/aggFile.hpp
+++ b/include/telemetry/aggFile.hpp
@@ -61,7 +61,7 @@ class AggregatedFile : public File {
 
 	FileOps getOps();
 
-	const std::string m_filesRegexPattern;
+	const std::string M_FILES_REGEX_PATTERN;
 
 	std::shared_ptr<Directory> m_patternRootDir;
 	std::vector<std::string> m_paths;
diff --git a/include/telemetry/aggMethod.hpp b/include/telemetry/aggMethod.hpp
index 1368059..2fa5ad1 100644
--- a/include/telemetry/aggMethod.hpp
+++ b/include/telemetry/aggMethod.hpp
@@ -36,7 +36,9 @@ enum class AggMethodType { AVG, SUM, JOIN };
  */
 struct AggOperation {
 	AggMethodType method; ///< Aggregation method
+	// NOLINTNEXTLINE(readability-redundant-string-init)
 	std::string dictFieldName = ""; ///< Name of the field in the dictionary
+	// NOLINTNEXTLINE(readability-redundant-string-init)
 	std::string dictResultName = ""; ///< Name of the field in the aggregated dictionary
 };
 
@@ -78,6 +80,9 @@ class AggMethod {
 protected:
 	AggContent getAggContent(const Content& content, bool useDictResultName = false);
 
+	[[nodiscard]] std::string getDictResultName() const { return m_dictResultname; }
+
+private:
 	std::string m_dictFieldName;
 	std::string m_dictResultname;
 };
diff --git a/include/telemetry/node.hpp b/include/telemetry/node.hpp
index e3fb096..e491bd9 100644
--- a/include/telemetry/node.hpp
+++ b/include/telemetry/node.hpp
@@ -64,9 +64,11 @@ class Node : public std::enable_shared_from_this<Node> {
 	std::string getFullPath();
 
 protected:
-	std::shared_ptr<Node> m_parent;
+	std::shared_ptr<Node> getParent() { return m_parent; };
 
 private:
+	std::shared_ptr<Node> m_parent;
+
 	std::mutex m_mutex;
 	std::string m_name;
 
diff --git a/src/telemetry/aggFile.cpp b/src/telemetry/aggFile.cpp
index 481dcdd..e62a5e1 100644
--- a/src/telemetry/aggFile.cpp
+++ b/src/telemetry/aggFile.cpp
@@ -119,10 +119,10 @@ Content AggregatedFile::read()
 	if (m_patternRootDir) {
 		patternRootDir = m_patternRootDir;
 	} else {
-		patternRootDir = std::dynamic_pointer_cast<Directory>(m_parent);
+		patternRootDir = std::dynamic_pointer_cast<Directory>(getParent());
 	}
 
-	const auto files = getFilesMatchingPattern(m_filesRegexPattern, patternRootDir);
+	const auto files = getFilesMatchingPattern(M_FILES_REGEX_PATTERN, patternRootDir);
 	if (files.empty()) {
 		return content;
 	}
@@ -159,7 +159,7 @@ AggregatedFile::AggregatedFile(
 	const std::vector<AggOperation>& ops,
 	std::shared_ptr<Directory> patternRootDir)
 	: File(parent, name, getOps())
-	, m_filesRegexPattern(std::move(aggFilesPattern))
+	, M_FILES_REGEX_PATTERN(std::move(aggFilesPattern))
 	, m_patternRootDir(std::move(patternRootDir))
 {
 	validateAggOperations(ops);
diff --git a/src/telemetry/aggregator/aggCommon.hpp b/src/telemetry/aggregator/aggCommon.hpp
index 8e61567..cb52238 100644
--- a/src/telemetry/aggregator/aggCommon.hpp
+++ b/src/telemetry/aggregator/aggCommon.hpp
@@ -69,7 +69,7 @@ static ScalarWithUnit getReferenceVariant(const std::vector<AggContent>& values)
 
 	if (std::holds_alternative<Array>(values.front())) {
 		for (const auto& value : values) {
-			const Array& array = std::get<Array>(value);
+			const auto& array = std::get<Array>(value);
 			if (!array.empty()) {
 				return {array.front(), ""};
 			}
@@ -102,7 +102,7 @@ static bool containsSameScalarAlternative(const std::vector<AggContent>& values)
 		return false;
 	}
 
-	size_t refIndex = refScalar.index();
+	const size_t refIndex = refScalar.index();
 
 	for (const auto& value : values) {
 		if (std::holds_alternative<Scalar>(value)) {
@@ -119,7 +119,7 @@ static bool containsSameScalarAlternative(const std::vector<AggContent>& values)
 				return false;
 			}
 		} else if (std::holds_alternative<Array>(value)) {
-			const Array& array = std::get<Array>(value);
+			const auto& array = std::get<Array>(value);
 			if (std::any_of(array.begin(), array.end(), [&](const auto& scalar) {
 					return scalar.index() != refIndex;
 				})) {
diff --git a/src/telemetry/aggregator/aggJoin.cpp b/src/telemetry/aggregator/aggJoin.cpp
index 0e9e2d5..408493b 100644
--- a/src/telemetry/aggregator/aggJoin.cpp
+++ b/src/telemetry/aggregator/aggJoin.cpp
@@ -61,7 +61,7 @@ Content AggMethodJoin::aggregate(const std::vector<Content>& contents)
 	}
 
 	const auto& result = aggregateGatheredValues(values);
-	return createContent(m_dictResultname, result);
+	return createContent(getDictResultName(), result);
 }
 
 } // namespace telemetry
diff --git a/src/telemetry/aggregator/aggSum.cpp b/src/telemetry/aggregator/aggSum.cpp
index be66ce6..8ec8c18 100644
--- a/src/telemetry/aggregator/aggSum.cpp
+++ b/src/telemetry/aggregator/aggSum.cpp
@@ -99,8 +99,9 @@ static Content createDictContent(const std::string& dictKey, const ResultType& r
 
 Content AggMethodSum::createContent(const ResultType& result)
 {
-	if (!m_dictResultname.empty()) {
-		return createDictContent(m_dictResultname, result);
+	const auto dictResultName = getDictResultName();
+	if (!dictResultName.empty()) {
+		return createDictContent(dictResultName, result);
 	}
 
 	auto visitor = [&](const auto& arg) -> Content { return arg; };