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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 12:34:54 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 12:34:54 +0000 |
commit | 0915b3ef56dfac3113cce55a59a5765dc94976be (patch) | |
tree | a8fea11d50b4f083e1bf0f90025ece7f0824784a /lib/livestatus/stdaggregator.cpp | |
parent | Initial commit. (diff) | |
download | icinga2-0915b3ef56dfac3113cce55a59a5765dc94976be.tar.xz icinga2-0915b3ef56dfac3113cce55a59a5765dc94976be.zip |
Adding upstream version 2.13.6.upstream/2.13.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | lib/livestatus/stdaggregator.cpp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/lib/livestatus/stdaggregator.cpp b/lib/livestatus/stdaggregator.cpp new file mode 100644 index 0000000..99c3a8e --- /dev/null +++ b/lib/livestatus/stdaggregator.cpp @@ -0,0 +1,40 @@ +/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */ + +#include "livestatus/stdaggregator.hpp" +#include <math.h> + +using namespace icinga; + +StdAggregator::StdAggregator(String attr) + : m_StdAttr(std::move(attr)) +{ } + +StdAggregatorState *StdAggregator::EnsureState(AggregatorState **state) +{ + if (!*state) + *state = new StdAggregatorState(); + + return static_cast<StdAggregatorState *>(*state); +} + +void StdAggregator::Apply(const Table::Ptr& table, const Value& row, AggregatorState **state) +{ + Column column = table->GetColumn(m_StdAttr); + + Value value = column.ExtractValue(row); + + StdAggregatorState *pstate = EnsureState(state); + + pstate->StdSum += value; + pstate->StdQSum += pow(value, 2); + pstate->StdCount++; +} + +double StdAggregator::GetResultAndFreeState(AggregatorState *state) const +{ + StdAggregatorState *pstate = EnsureState(&state); + double result = sqrt((pstate->StdQSum - (1 / pstate->StdCount) * pow(pstate->StdSum, 2)) / (pstate->StdCount - 1)); + delete pstate; + + return result; +} |