1 files changed, 45 insertions, 0 deletions
diff --git a/lib/livestatus/minaggregator.cpp b/lib/livestatus/minaggregator.cpp
new file mode 100644
index 0000000..06cb76e
--- /dev/null
+++ b/lib/livestatus/minaggregator.cpp
@@ -0,0 +1,45 @@
+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#include "livestatus/minaggregator.hpp"
+
+using namespace icinga;
+
+MinAggregator::MinAggregator(String attr)
+	: m_MinAttr(std::move(attr))
+{ }
+
+MinAggregatorState *MinAggregator::EnsureState(AggregatorState **state)
+{
+	if (!*state)
+		*state = new MinAggregatorState();
+
+	return static_cast<MinAggregatorState *>(*state);
+}
+
+void MinAggregator::Apply(const Table::Ptr& table, const Value& row, AggregatorState **state)
+{
+	Column column = table->GetColumn(m_MinAttr);
+
+	Value value = column.ExtractValue(row);
+
+	MinAggregatorState *pstate = EnsureState(state);
+
+	if (value < pstate->Min)
+		pstate->Min = value;
+}
+
+double MinAggregator::GetResultAndFreeState(AggregatorState *state) const
+{
+	MinAggregatorState *pstate = EnsureState(&state);
+
+	double result;
+
+	if (pstate->Min == DBL_MAX)
+		result = 0;
+	else
+		result = pstate->Min;
+
+	delete pstate;
+
+	return result;
+}