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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "metricsnapshot.h"
#include "metricmanager.h"
#include <vespa/log/log.h>
LOG_SETUP(".metrics.snapshot");
namespace metrics {
MetricSnapshot::MetricSnapshot(const Metric::String& name)
: _name(name),
_period(0),
_fromTime(0),
_toTime(0),
_snapshot(new MetricSet("top", "", "")),
_metrics()
{
}
MetricSnapshot::MetricSnapshot(
const Metric::String& name, uint32_t period, const MetricSet& source,
bool copyUnset)
: _name(name),
_period(period),
_fromTime(0),
_toTime(0),
_snapshot(),
_metrics()
{
Metric* m = source.clone(_metrics, Metric::INACTIVE, 0, copyUnset);
assert(m->isMetricSet());
_snapshot.reset(static_cast<MetricSet*>(m));
_metrics.shrink_to_fit();
}
MetricSnapshot::~MetricSnapshot() { }
void
MetricSnapshot::reset(time_t currentTime)
{
_fromTime = currentTime;
_toTime = 0;
_snapshot->reset();
}
void
MetricSnapshot::recreateSnapshot(const MetricSet& metrics, bool copyUnset)
{
std::vector<Metric::UP> newMetrics;
Metric* m = metrics.clone(newMetrics, Metric::INACTIVE, 0, copyUnset);
assert(m->isMetricSet());
std::unique_ptr<MetricSet> newSnapshot(static_cast<MetricSet*>(m));
newSnapshot->reset();
_snapshot->addToSnapshot(*newSnapshot, newMetrics);
_snapshot = std::move(newSnapshot);
_metrics.swap(newMetrics);
_metrics.shrink_to_fit();
}
void
MetricSnapshot::addMemoryUsage(MemoryConsumption& mc) const
{
++mc._snapshotCount;
mc._snapshotName += mc.getStringMemoryUsage(_name, mc._snapshotNameUnique);
mc._snapshotMeta += sizeof(MetricSnapshot)
+ _metrics.capacity() * sizeof(Metric::SP);
_snapshot->addMemoryUsage(mc);
}
MetricSnapshotSet::MetricSnapshotSet(
const Metric::String& name, uint32_t period,
uint32_t count, const MetricSet& source, bool snapshotUnsetMetrics)
: _count(count),
_builderCount(0),
_current(new MetricSnapshot(name, period, source, snapshotUnsetMetrics)),
_building(count == 1 ? 0 : new MetricSnapshot(
name, period, source, snapshotUnsetMetrics))
{
_current->reset(0);
if (_building.get()) _building->reset(0);
}
MetricSnapshot&
MetricSnapshotSet::getNextTarget()
{
if (_count == 1) return *_current;
return *_building;
}
bool
MetricSnapshotSet::haveCompletedNewPeriod(time_t newFromTime)
{
if (_count == 1) {
_current->setToTime(newFromTime);
return true;
}
_building->setToTime(newFromTime);
// If not time to roll yet, just return
if (++_builderCount < _count) return false;
// Building buffer done. Use that as current and reset current.
MetricSnapshot::UP tmp(std::move(_current));
_current = std::move(_building);
_building = std::move(tmp);
_building->reset(newFromTime);
_builderCount = 0;
return true;
}
bool
MetricSnapshotSet::timeForAnotherSnapshot(time_t currentTime) {
time_t lastTime = getToTime();
if (currentTime >= lastTime + getPeriod()) {
if (currentTime >= lastTime + 2 * getPeriod()) {
LOG(warning, "Metric snapshot set %s was asked if it was time for "
"another snapshot, a whole period beyond when it "
"should have been done (Last update was at time %"
PRIu64 ", current time is %" PRIu64 " and period is %u). "
"Clearing data and updating time to current time.",
getName().c_str(), lastTime, currentTime, getPeriod());
reset(currentTime);
}
return true;
}
return false;
}
void
MetricSnapshotSet::reset(time_t currentTime) {
if (_count != 1) _building->reset(currentTime);
_current->reset(currentTime);
_builderCount = 0;
}
void
MetricSnapshotSet::recreateSnapshot(const MetricSet& metrics, bool copyUnset)
{
if (_count != 1) _building->recreateSnapshot(metrics, copyUnset);
_current->recreateSnapshot(metrics, copyUnset);
}
void
MetricSnapshotSet::addMemoryUsage(MemoryConsumption& mc) const
{
++mc._snapshotSetCount;
mc._snapshotSetMeta += sizeof(MetricSnapshotSet);
if (_count != 1) _building->addMemoryUsage(mc);
_current->addMemoryUsage(mc);
}
void
MetricSnapshotSet::updateNames(NameHash& hash) const
{
if (_count != 1) _building->updateNames(hash);
_current->updateNames(hash);
}
void
MetricSnapshotSet::setFromTime(time_t fromTime)
{
if (_count != 1) _building->setFromTime(fromTime);
_current->setFromTime(fromTime);
}
} // metrics
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