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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "componentregisterimpl.h"
#include <vespa/storageframework/generic/status/statusreporter.h>
#include <vespa/storageframework/generic/metric/metricupdatehook.h>
#include <vespa/metrics/metricmanager.h>
#include <vespa/vespalib/util/exceptions.h>
#include <cassert>
namespace storage::framework::defaultimplementation {
ComponentRegisterImpl::ComponentRegisterImpl()
: _componentLock(),
_components(),
_topMetricSet("vds", {}, ""),
_hooks(),
_metricManager(nullptr),
_clock(nullptr),
_threadPool(nullptr),
_shutdownListener(nullptr)
{ }
ComponentRegisterImpl::~ComponentRegisterImpl() = default;
void
ComponentRegisterImpl::registerComponent(ManagedComponent& mc)
{
std::lock_guard lock(_componentLock);
_components.push_back(&mc);
if (_clock) {
mc.setClock(*_clock);
}
if (_threadPool) {
mc.setThreadPool(*_threadPool);
}
if (_metricManager) {
mc.setMetricRegistrator(*this);
}
}
void
ComponentRegisterImpl::requestShutdown(vespalib::stringref reason)
{
std::lock_guard lock(_componentLock);
if (_shutdownListener) {
_shutdownListener->requestShutdown(reason);
}
}
void
ComponentRegisterImpl::setMetricManager(metrics::MetricManager& mm)
{
std::vector<ManagedComponent*> components;
{
std::lock_guard lock(_componentLock);
assert(_metricManager == nullptr);
components = _components;
_metricManager = &mm;
}
{
metrics::MetricLockGuard lock(mm.getMetricLock());
mm.registerMetric(lock, _topMetricSet);
}
for (auto* component : components) {
component->setMetricRegistrator(*this);
}
}
void
ComponentRegisterImpl::setClock(Clock& c)
{
std::lock_guard lock(_componentLock);
assert(_clock == nullptr);
_clock = &c;
for (auto* component : _components) {
component->setClock(c);
}
}
void
ComponentRegisterImpl::setThreadPool(ThreadPool& tp)
{
std::lock_guard lock(_componentLock);
assert(_threadPool == nullptr);
_threadPool = &tp;
for (auto* component : _components) {
component->setThreadPool(tp);
}
}
const StatusReporter*
ComponentRegisterImpl::getStatusReporter(vespalib::stringref id)
{
std::lock_guard lock(_componentLock);
for (auto* component : _components) {
if ((component->getStatusReporter() != nullptr)
&& (component->getStatusReporter()->getId() == id))
{
return component->getStatusReporter();
}
}
return nullptr;
}
std::vector<const StatusReporter*>
ComponentRegisterImpl::getStatusReporters()
{
std::vector<const StatusReporter*> reporters;
std::lock_guard lock(_componentLock);
for (auto* component : _components) {
if (component->getStatusReporter() != nullptr) {
reporters.emplace_back(component->getStatusReporter());
}
}
return reporters;
}
void
ComponentRegisterImpl::registerMetric(metrics::Metric& m)
{
metrics::MetricLockGuard lock(_metricManager->getMetricLock());
_topMetricSet.registerMetric(m);
}
namespace {
struct MetricHookWrapper : public metrics::UpdateHook {
MetricUpdateHook& _hook;
MetricHookWrapper(vespalib::stringref name, MetricUpdateHook& hook, vespalib::system_time::duration period)
: metrics::UpdateHook(name.data(), period), // Expected to point to static name
_hook(hook)
{
}
void updateMetrics(const MetricLockGuard & guard) override { _hook.updateMetrics(guard); }
};
}
void
ComponentRegisterImpl::registerUpdateHook(vespalib::stringref name,
MetricUpdateHook& hook,
vespalib::system_time::duration period)
{
std::lock_guard lock(_componentLock);
auto hookPtr = std::make_unique<MetricHookWrapper>(name, hook, period);
_metricManager->addMetricUpdateHook(*hookPtr);
_hooks.emplace_back(std::move(hookPtr));
}
void
ComponentRegisterImpl::registerShutdownListener(ShutdownListener& listener)
{
std::lock_guard lock(_componentLock);
assert(_shutdownListener == nullptr);
_shutdownListener = &listener;
}
}
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