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

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+
+module Metrics;
+
+export {
+	redef enum Calculation += { 
+		## Sums the values given.  For string values,
+		## this will be the number of strings given.
+		SUM
+	};
+
+	redef record ResultVal += {
+		## For numeric data, this tracks the sum of all values.
+		sum:      double        &log &optional;
+	};
+}
+
+hook add_to_calculation(filter: Filter, val: double, data: DataPoint, result: ResultVal)
+	{
+	if ( SUM in filter$measure )
+		{
+		if ( ! result?$sum ) 
+			result$sum = 0;
+		result$sum += val;
+		}
+	}
+
+hook plugin_merge_measurements(result: ResultVal, rv1: ResultVal, rv2: ResultVal)
+	{
+	if ( rv1?$sum || rv2?$sum )
+		{
+		result$sum = rv1?$sum ? rv1$sum : 0;
+		if ( rv2?$sum )
+			result$sum += rv2$sum;
+		}
+	}