diff options
Diffstat (limited to 'lib/livestatus/minaggregator.cpp')
-rw-r--r-- | lib/livestatus/minaggregator.cpp | 45 |
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; +} |