zeek/scripts/policy/frameworks/metrics/http-example.bro
2012-11-20 02:08:49 -05:00

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##! Provides an example of aggregating and limiting collection down to
##! only local networks. Additionally, the status code for the response from
##! the request is added into the metric.
@load base/frameworks/metrics
@load base/protocols/http
@load base/utils/site
event bro_init()
{
# TODO: these are waiting on a fix with table vals + records before they will work.
#Metrics::add_filter(HTTP_REQUESTS_BY_HOST_HEADER,
# [$pred(index: Metrics::Index) = { return Site::is_local_addr(index$host); },
# $aggregation_mask=24,
# $break_interval=1min]);
# Site::local_nets must be defined in order for this to actually do anything.
Metrics::add_filter("http.request.by_status_code", [$aggregation_table=Site::local_nets_table,
$break_interval=1min]);
}
event HTTP::log_http(rec: HTTP::Info)
{
if ( rec?$host )
Metrics::add_data("http.request.by_host_header", [$str=rec$host], [$num=1]);
if ( rec?$status_code )
Metrics::add_data("http.request.by_status_code", [$host=rec$id$orig_h, $str=fmt("%d", rec$status_code)], [$num=1]);
}