zeek/scripts/base/frameworks/measurement/plugins/min.bro
2013-03-13 22:55:03 -04:00

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module Metrics;
export {
redef enum Calculation += {
## Find the minimum value.
MIN
};
redef record ResultVal += {
## For numeric data, this tracks the minimum value given.
min: double &log &optional;
};
}
hook add_to_calculation(filter: Filter, val: double, data: DataPoint, result: ResultVal)
{
if ( MIN in filter$measure )
{
if ( ! result?$min )
result$min = val;
else if ( val < result$min )
result$min = val;
}
}
hook plugin_merge_measurements(result: ResultVal, rv1: ResultVal, rv2: ResultVal)
{
if ( rv1?$min && rv2?$min )
result$min = (rv1$min < rv2$min) ? rv1$min : rv2$min;
else if ( rv1?$min )
result$min = rv1$min;
else if ( rv2?$min )
result$min = rv2$min;
}