zeek/scripts/policy/frameworks/metrics/http-example.bro

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@load base/frameworks/metrics
@load base/protocols/http
@load base/utils/site
redef enum Metrics::ID += {
HTTP_REQUESTS_BY_STATUS_CODE,
HTTP_REQUESTS_BY_HOST_HEADER,
};
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,
# [$pred(index: Index) = { return Site:is_local_addr(index$host) },
# $aggregation_mask=24,
# $break_interval=5mins]);
#
## Site::local_nets must be defined in order for this to actually do anything.
#Metrics::add_filter(HTTP_REQUESTS_BY_STATUS_CODE, [$aggregation_table=Site::local_nets_table,
# $break_interval=5mins]);
}
event HTTP::log_http(rec: HTTP::Info)
{
if ( rec?$host )
Metrics::add_data(HTTP_REQUESTS_BY_HOST_HEADER, [$str=rec$host], 1);
if ( rec?$status_code )
Metrics::add_data(HTTP_REQUESTS_BY_STATUS_CODE, [$host=rec$id$orig_h, $str=fmt("%d", rec$status_code)], 1);
}