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feat(stats): add host_netinfo networking information stats family #3344

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merged 1 commit into from
Sep 26, 2024
Merged

feat(stats): add host_netinfo networking information stats family #3344

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62 changes: 62 additions & 0 deletions userspace/falco/stats_writer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -309,6 +309,66 @@ stats_writer::collector::collector(const std::shared_ptr<stats_writer>& writer)
{
}

void add_netinfo_metrics_output_fields(
nlohmann::json& output_fields,
const std::shared_ptr<sinsp>& inspector)
{
const auto ipv4_ifinfo = inspector->get_ifaddr_list().get_ipv4_list();
const auto ipv6_ifinfo = inspector->get_ifaddr_list().get_ipv6_list();

// For each interface name, collect the corresponding list of IPv4/IPv6 addresses
std::map<std::string, std::vector<std::string>> ifnames_to_ipv4_addresses;
std::map<std::string, std::vector<std::string>> ifnames_to_ipv6_addresses;

for (const auto& ifinfo : *ipv4_ifinfo)
{
if(ifinfo.m_name == "lo")
{
continue;
}

auto it = ifnames_to_ipv4_addresses.find(ifinfo.m_name);
auto address = ifinfo.addr_to_string();
if (it == ifnames_to_ipv4_addresses.end())
{
ifnames_to_ipv4_addresses.emplace(ifinfo.m_name, std::vector{address});
continue;
}
it->second.emplace_back(address);
}

for (const auto& ifinfo : *ipv6_ifinfo)
{
if(ifinfo.m_name == "lo")
{
continue;
}

auto it = ifnames_to_ipv6_addresses.find(ifinfo.m_name);
auto address = ifinfo.addr_to_string();
if (it == ifnames_to_ipv6_addresses.end())
{
ifnames_to_ipv6_addresses.emplace(ifinfo.m_name, std::vector{address});
continue;
}
it->second.emplace_back(address);
}

for (const auto& item : ifnames_to_ipv4_addresses)
{
auto metric_name = "falco.host_netinfo.interfaces." + item.first + ".protocols.ipv4.addresses";
auto addresses = sinsp_join(item.second.cbegin(), item.second.cend(), ',');
output_fields.emplace(metric_name, addresses);
}

for (const auto& item : ifnames_to_ipv6_addresses)
{
auto metric_name = "falco.host_netinfo.interfaces." + item.first + ".protocols.ipv6.addresses";
auto addresses = sinsp_join(item.second.cbegin(), item.second.cend(), ',');
output_fields.emplace(metric_name, addresses);
}
}

void stats_writer::collector::get_metrics_output_fields_wrapper(
nlohmann::json& output_fields,
const std::shared_ptr<sinsp>& inspector,
Expand Down Expand Up @@ -358,6 +418,8 @@ void stats_writer::collector::get_metrics_output_fields_wrapper(
output_fields[metric_name_file_sha256] = item.second;
}

add_netinfo_metrics_output_fields(output_fields, inspector);

#endif
output_fields["evt.source"] = src;
for (size_t i = 0; i < sizeof(all_driver_engines) / sizeof(const char*); i++)
Expand Down
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