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236 | // Copyright (C) 2024 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <exceptions/exceptions.h>
#include <monitored_duration_store.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <util/multi_threading_mgr.h>
using namespace isc;
using namespace isc::dhcp;
using namespace isc::util;
using namespace boost::posix_time;
namespace isc {
namespace perfmon {
MonitoredDurationStore::MonitoredDurationStore(uint16_t family,
const Duration& interval_duration)
: family_(family),
interval_duration_(interval_duration),
durations_(),
mutex_(new std::mutex) {
if (family != AF_INET && family_ != AF_INET6) {
isc_throw(BadValue, "MonitoredDurationStore - invalid family "
<< family_ << ", must be AF_INET or AF_INET6");
}
if (interval_duration_ <= DurationDataInterval::ZERO_DURATION()) {
isc_throw(BadValue, "MonitoredDurationStore - invalid interval_duration "
<< interval_duration_ << ", must be greater than zero");
}
}
void
MonitoredDurationStore::validateKey(const std::string& label, DurationKeyPtr key) const {
if (!key) {
isc_throw(BadValue, "MonitoredDurationStore::" << label << " - key is empty");
}
if (key->getFamily() != family_) {
isc_throw(BadValue, "MonitoredDurationStore::" << label
<< " - family mismatch, key is " << (family_ == AF_INET ?
"v6, store is v4" : "v4, store is v6"));
}
}
MonitoredDurationPtr
MonitoredDurationStore::addDurationSample(DurationKeyPtr key, const Duration& sample) {
validateKey("addDurationSample", key);
MultiThreadingLock lock(*mutex_);
auto& index = durations_.get<DurationKeyTag>();
auto duration_iter = index.find(boost::make_tuple(key->getQueryType(),
key->getResponseType(),
key->getStartEventLabel(),
key->getStopEventLabel(),
key->getSubnetId()));
if (duration_iter != index.end()) {
bool should_report = false;
// Modify updates in place and only re-indexes if keys change.
bool modified = index.modify(duration_iter,
[sample, &should_report](MonitoredDurationPtr mond) {
should_report = mond->addSample(sample);
});
if (!modified) {
// Possible but unlikely.
isc_throw(Unexpected,
"MonitoredDurationStore::addDurationSample - modify failed for: "
<< key->getLabel());
}
// If it's time to report return a copy otherwise an empty pointer.
return (should_report ? MonitoredDurationPtr(new MonitoredDuration(**duration_iter))
: MonitoredDurationPtr());
}
// It doesn't exist, add it.
MonitoredDurationPtr mond(new MonitoredDuration(*key, interval_duration_));
static_cast<void>(mond->addSample(sample));
auto ret = durations_.insert(mond);
if (ret.second == false) {
// Shouldn't be possible.
isc_throw(DuplicateDurationKey,
"MonitoredDurationStore::addDurationSample: duration already exists for: "
<< mond->getLabel());
}
// Nothing to report.
return (MonitoredDurationPtr());
}
MonitoredDurationPtr
MonitoredDurationStore::addDuration(DurationKeyPtr key) {
validateKey("addDuration", key);
// Create the duration instance.
MonitoredDurationPtr mond;
try {
mond.reset(new MonitoredDuration(*key, interval_duration_));
} catch (const std::exception& ex) {
isc_throw(BadValue, "MonitoredDurationStore::addDuration failed: " << ex.what());
}
// Now lock and insert the new duration.
{
MultiThreadingLock lock(*mutex_);
auto ret = durations_.insert(mond);
if (ret.second == false) {
isc_throw(DuplicateDurationKey,
"MonitoredDurationStore::addDuration: duration already exists for: "
<< mond->getLabel());
}
}
// Return a copy of what we inserted.
return (MonitoredDurationPtr(new MonitoredDuration(*mond)));
}
MonitoredDurationPtr
MonitoredDurationStore::getDuration(DurationKeyPtr key) {
validateKey("getDuration", key);
MultiThreadingLock lock(*mutex_);
const auto& index = durations_.get<DurationKeyTag>();
auto duration_iter = index.find(boost::make_tuple(key->getQueryType(),
key->getResponseType(),
key->getStartEventLabel(),
key->getStopEventLabel(),
key->getSubnetId()));
return (duration_iter == index.end() ? MonitoredDurationPtr()
: MonitoredDurationPtr(new MonitoredDuration(**duration_iter)));
}
void
MonitoredDurationStore::updateDuration(MonitoredDurationPtr& duration) {
validateKey("updateDuration", duration);
MultiThreadingLock lock(*mutex_);
auto& index = durations_.get<DurationKeyTag>();
auto duration_iter = index.find(boost::make_tuple(duration->getQueryType(),
duration->getResponseType(),
duration->getStartEventLabel(),
duration->getStopEventLabel(),
duration->getSubnetId()));
if (duration_iter == index.end()) {
isc_throw(InvalidOperation, "MonitoredDurationStore::updateDuration duration not found: "
<< duration->getLabel());
}
// Use replace() which only re-indexes if keys change.
index.replace(duration_iter, MonitoredDurationPtr(new MonitoredDuration(*duration)));
}
void
MonitoredDurationStore::deleteDuration(DurationKeyPtr key) {
validateKey("deleteDuration", key);
MultiThreadingLock lock(*mutex_);
auto& index = durations_.get<DurationKeyTag>();
auto duration_iter = index.find(boost::make_tuple(key->getQueryType(),
key->getResponseType(),
key->getStartEventLabel(),
key->getStopEventLabel(),
key->getSubnetId()));
if (duration_iter == index.end()) {
// Not there, just return.
return;
}
// Remove the duration from the store.
durations_.erase(duration_iter);
}
MonitoredDurationCollectionPtr
MonitoredDurationStore::getAll() {
MultiThreadingLock lock(*mutex_);
const auto& index = durations_.get<DurationKeyTag>();
MonitoredDurationCollectionPtr collection(new MonitoredDurationCollection());
for (auto const& mond : index) {
collection->push_back(MonitoredDurationPtr(new MonitoredDuration(*mond)));
}
return (collection);
}
void
MonitoredDurationStore::clear() {
MultiThreadingLock lock(*mutex_);
durations_.clear();
}
MonitoredDurationPtr
MonitoredDurationStore::getReportsNext() {
MultiThreadingLock lock(*mutex_);
const auto& index = durations_.get<IntervalStartTag>();
// We want to find the oldest interval that is less than interval_duration in the past.
auto duration_iter = index.lower_bound(dhcp::PktEvent::now() - interval_duration_);
return (duration_iter == index.end() ? MonitoredDurationPtr()
: MonitoredDurationPtr(new MonitoredDuration(**duration_iter)));
}
MonitoredDurationCollectionPtr
MonitoredDurationStore::getOverdueReports(const Timestamp& since /* = PktEvent::now() */) {
MultiThreadingLock lock(*mutex_);
// We use a lower bound of MIN + 1us to avoid dormant durations
static Timestamp lower_limit_time(PktEvent::MIN_TIME() + microseconds(1));
// We want to find anything since the start of time who's start time
// is more than interval_duration_ in the past.
const auto& index = durations_.get<IntervalStartTag>();
auto lower_limit = index.lower_bound(lower_limit_time);
auto upper_limit = index.upper_bound(since - interval_duration_);
MonitoredDurationCollectionPtr collection(new MonitoredDurationCollection());
for (auto duration_iter = lower_limit; duration_iter != upper_limit; ++duration_iter) {
collection->push_back(MonitoredDurationPtr(new MonitoredDuration(**duration_iter)));
}
return (collection);
}
} // end of namespace perfmon
} // end of namespace isc
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