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184 | // Copyright (C) 2022 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Kea Hooks Basic
// Commercial End User License Agreement v2.0. See COPYING file in the premium/
// directory.
#include <config.h>
#include <cc/dhcp_config_error.h>
#include <exceptions/exceptions.h>
#include <limits/configuration.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <limits/limits_logger.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <log/macros.h>
#include <string><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
namespace isc {
namespace limits {
using namespace isc::dhcp;
using namespace std;
using isc::data::ConstElementPtr;
using isc::log::DBGLVL_TRACE_BASIC;
RateLimit::RateLimit(string const& text) {
// Parse string.
char const* pkt_per(" packets per ");
size_t index(text.find(pkt_per));
if (index == text.npos) {
pkt_per = " packet per ";
index = text.find(pkt_per);
if (index == text.npos) {
isc_throw(ConfigError,
"expected rate limit of format <n> packet[s] per <time-unit>, got: " << text);
}
}
// Determine the number of allowed packets.
int64_t const allowed_packets(stoll(text.substr(0, index)));
checkForLimitBoundaries<decltype(allowed_packets_)>(allowed_packets);
allowed_packets_ = allowed_packets;
// Determine the time unit and convert it to a chrono::duration type.
string const time_period(text.substr(index + strlen(pkt_per)));
if (time_period == "second") {
time_unit_ = chrono::seconds(1);
} else if (time_period == "minute") {
time_unit_ = chrono::minutes(1);
} else if (time_period == "hour") {
time_unit_ = chrono::hours(1);
} else if (time_period == "day") {
time_unit_ = chrono::hours(24);
} else if (time_period == "week") {
time_unit_ = chrono::hours(7 * 24);
} else if (time_period == "month") {
time_unit_ = chrono::hours(30 * 24);
} else if (time_period == "year") {
time_unit_ = chrono::hours(365 * 24);
} else {
isc_throw(ConfigError, "invalid time period " << time_period);
}
// Keep the entire text, it's used for logging purposes.
text_ = text;
}
// -- AddressLimitConfiguration --
const std::string&
AddressLimitConfiguration::key() const {
static std::string limit_str("address-limit");
return (limit_str);
}
void
AddressLimitConfiguration::logClientClassLimit(ClientClass const& client_class,
ConstElementPtr const& limit) {
if (!limit) {
return;
}
int64_t const limit_candidate(limit->intValue());
checkForLimitBoundaries<LeaseLimit>(limit_candidate);
LOG_DEBUG(limits_logger, DBGLVL_TRACE_BASIC, LIMITS_CONFIGURED_ADDRESS_LIMIT_BY_CLIENT_CLASS)
.arg(limit_candidate)
.arg(client_class);
}
void
AddressLimitConfiguration::logSubnetLimit(SubnetID const subnet_id,
ConstElementPtr const& limit) {
if (!limit) {
return;
}
int64_t const limit_candidate(limit->intValue());
checkForLimitBoundaries<LeaseLimit>(limit_candidate);
LOG_DEBUG(limits_logger, DBGLVL_TRACE_BASIC, LIMITS_CONFIGURED_ADDRESS_LIMIT_BY_SUBNET)
.arg(limit_candidate)
.arg(subnet_id);
}
// -- PrefixLimitConfiguration --
const std::string&
PrefixLimitConfiguration::key() const {
static std::string limit_str ("prefix-limit");
return (limit_str);
}
void
PrefixLimitConfiguration::logClientClassLimit(ClientClass const& client_class,
ConstElementPtr const& limit) {
if (!limit) {
return;
}
int64_t const limit_candidate(limit->intValue());
checkForLimitBoundaries<LeaseLimit>(limit_candidate);
LOG_DEBUG(limits_logger, DBGLVL_TRACE_BASIC, LIMITS_CONFIGURED_PREFIX_LIMIT_BY_CLIENT_CLASS)
.arg(limit_candidate)
.arg(client_class);
}
void
PrefixLimitConfiguration::logSubnetLimit(SubnetID const subnet_id,
ConstElementPtr const& limit) {
if (!limit) {
return;
}
int64_t const limit_candidate(limit->intValue());
checkForLimitBoundaries<LeaseLimit>(limit_candidate);
LOG_DEBUG(limits_logger, DBGLVL_TRACE_BASIC, LIMITS_CONFIGURED_PREFIX_LIMIT_BY_SUBNET)
.arg(limit_candidate)
.arg(subnet_id);
}
// -- RateLimitConfiguration --
const std::string&
RateLimitConfiguration::key() const {
static std::string limit_str("rate-limit");
return (limit_str);
}
void
RateLimitConfiguration::logClientClassLimit(ClientClass const& client_class,
ConstElementPtr const& limit) {
if (!limit) {
return;
}
string const& limit_candidate = limit->stringValue();
RateLimit rate_limit(limit_candidate);
LOG_DEBUG(limits_logger, DBGLVL_TRACE_BASIC, LIMITS_CONFIGURED_RATE_LIMIT_BY_CLIENT_CLASS)
.arg(limit_candidate)
.arg(client_class);
}
void
RateLimitConfiguration::logSubnetLimit(SubnetID const subnet_id,
ConstElementPtr const& limit) {
if (!limit) {
return;
}
string const& limit_candidate = limit->stringValue();
RateLimit rate_limit(limit_candidate);
LOG_DEBUG(limits_logger, DBGLVL_TRACE_BASIC, LIMITS_CONFIGURED_RATE_LIMIT_BY_SUBNET)
.arg(limit_candidate)
.arg(subnet_id);
}
} // namespace limits
} // namespace isc
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