zeek/scripts/base/frameworks/measurement/plugins/sum.bro

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module Measurement;
export {
redef enum Calculation += {
## Sums the values given. For string values,
## this will be the number of strings given.
SUM
};
redef record Result += {
## For numeric data, this tracks the sum of all values.
sum: double &log &optional;
};
}
hook add_to_reducer(r: Reducer, val: double, data: DataPoint, result: Result)
{
if ( SUM in r$apply )
{
if ( ! result?$sum )
result$sum = 0;
result$sum += val;
}
}
hook compose_resultvals_hook(result: Result, rv1: Result, rv2: Result)
{
if ( rv1?$sum || rv2?$sum )
{
result$sum = rv1?$sum ? rv1$sum : 0;
if ( rv2?$sum )
result$sum += rv2$sum;
}
}