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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/persistence/spi/resource_usage.h>
#include <vespa/persistence/spi/resource_usage_listener.h>
#include <vespa/searchcore/proton/attribute/attribute_usage_stats.h>
#include <vespa/searchcore/proton/attribute/i_attribute_usage_listener.h>
#include <vespa/searchcore/proton/persistenceengine/resource_usage_tracker.h>
#include <vespa/searchcore/proton/test/disk_mem_usage_notifier.h>
#include <vespa/searchlib/attribute/address_space_components.h>
#include <vespa/vespalib/gtest/gtest.h>
#include <vespa/vespalib/util/idestructorcallback.h>
#include <atomic>
using storage::spi::AttributeResourceUsage;
using storage::spi::ResourceUsage;
using proton::test::DiskMemUsageNotifier;
using proton::AttributeUsageStats;
using proton::DiskMemUsageState;
using proton::ResourceUsageTracker;
namespace {
struct MyResourceUsageListener : public storage::spi::ResourceUsageListener
{
std::atomic<size_t> _update_count;
MyResourceUsageListener()
: storage::spi::ResourceUsageListener(),
_update_count(0u)
{
}
void update_resource_usage(const ResourceUsage& resource_usage) override {
storage::spi::ResourceUsageListener::update_resource_usage(resource_usage);
++_update_count;
}
size_t get_update_count() const { return _update_count; }
};
}
class ResourceUsageTrackerTest : public ::testing::Test
{
protected:
DiskMemUsageNotifier _notifier;
std::shared_ptr<ResourceUsageTracker> _tracker;
std::unique_ptr<MyResourceUsageListener> _listener;
public:
ResourceUsageTrackerTest()
: testing::Test(),
_notifier(DiskMemUsageState({ 0.8, 0.5 }, { 0.8, 0.4 })),
_tracker(std::make_shared<ResourceUsageTracker>(_notifier)),
_listener(std::make_unique<MyResourceUsageListener>())
{
}
~ResourceUsageTrackerTest();
void notify(double disk_usage, double memory_usage, double transient_disk_usage = 0.0, double transient_memory_usage = 0.0)
{
_notifier.notify(DiskMemUsageState({ 0.8, disk_usage }, { 0.8, memory_usage },
transient_disk_usage, transient_memory_usage));
}
ResourceUsage get_usage() { return _listener->get_usage(); }
size_t get_update_count() const { return _listener->get_update_count(); }
};
ResourceUsageTrackerTest::~ResourceUsageTrackerTest() = default;
TEST_F(ResourceUsageTrackerTest, resource_usage_is_forwarded_to_listener)
{
EXPECT_EQ(ResourceUsage(0.0, 0.0), get_usage());
auto register_guard = _tracker->set_listener(*_listener);
EXPECT_EQ(ResourceUsage(0.5, 0.4), get_usage());
notify(0.75, 0.25);
EXPECT_EQ(ResourceUsage(0.75, 0.25), get_usage());
}
TEST_F(ResourceUsageTrackerTest, transient_resource_usage_is_subtracted_from_absolute_usage)
{
auto register_guard = _tracker->set_listener(*_listener);
notify(0.8, 0.5, 0.4, 0.2);
EXPECT_EQ(ResourceUsage(0.4, 0.3), get_usage());
notify(0.8, 0.5, 0.9, 0.6);
EXPECT_EQ(ResourceUsage(0.0, 0.0), get_usage());
}
TEST_F(ResourceUsageTrackerTest, forwarding_depends_on_register_guard)
{
auto register_guard = _tracker->set_listener(*_listener);
register_guard.reset();
notify(0.75, 0.25);
EXPECT_EQ(ResourceUsage(0.5, 0.4), get_usage());
}
TEST_F(ResourceUsageTrackerTest, no_forwarding_to_deleted_listener)
{
_listener->set_register_guard(_tracker->set_listener(*_listener));
notify(0.75, 0.25);
EXPECT_EQ(ResourceUsage(0.75, 0.25), get_usage());
_listener.reset();
notify(0.2, 0.1);
}
TEST_F(ResourceUsageTrackerTest, register_guard_handles_deleted_tracker)
{
auto register_guard = _tracker->set_listener(*_listener);
_tracker.reset();
}
namespace {
struct NamedAttribute
{
vespalib::string subdb;
vespalib::string attribute;
NamedAttribute(const vespalib::string& subdb_in, const vespalib::string& attribute_in)
: subdb(subdb_in),
attribute(attribute_in)
{
}
};
NamedAttribute ready_a1("0.ready", "a1");
NamedAttribute notready_a1("2.notready", "a1");
NamedAttribute ready_a2("0.ready", "a2");
constexpr size_t usage_limit = 1024;
struct AttributeUsageStatsBuilder
{
AttributeUsageStats stats;
AttributeUsageStatsBuilder()
: stats()
{
}
~AttributeUsageStatsBuilder();
AttributeUsageStatsBuilder& reset() { stats = AttributeUsageStats(); return *this; }
AttributeUsageStatsBuilder& merge(const NamedAttribute& named_attribute, size_t used_address_space);
AttributeUsageStats build() { return stats; }
};
AttributeUsageStatsBuilder::~AttributeUsageStatsBuilder() = default;
AttributeUsageStatsBuilder&
AttributeUsageStatsBuilder::merge(const NamedAttribute& named_attribute, size_t used_address_space)
{
vespalib::AddressSpace address_space_usage(used_address_space, 0, usage_limit);
search::AddressSpaceUsage as_usage;
as_usage.set("comp", address_space_usage);
stats.merge(as_usage, named_attribute.attribute, named_attribute.subdb);
return *this;
}
double rel_usage(size_t usage) noexcept {
return (double) usage / (double) usage_limit;
}
ResourceUsage make_resource_usage(const vespalib::string& attr_name, size_t used_address_space)
{
AttributeResourceUsage address_space_usage(rel_usage(used_address_space), attr_name);
return ResourceUsage(0.0, 0.0, address_space_usage);
}
}
TEST_F(ResourceUsageTrackerTest, aggregates_attribute_usage)
{
notify(0.0, 0.0);
auto register_guard = _tracker->set_listener(*_listener);
auto aul1 = _tracker->make_attribute_usage_listener("doctype1");
auto aul2 = _tracker->make_attribute_usage_listener("doctype2");
AttributeUsageStatsBuilder b1;
AttributeUsageStatsBuilder b2;
b1.merge(ready_a1, 10).merge(ready_a2, 5);
b2.merge(ready_a1, 15);
aul1->notify_attribute_usage(b1.build());
aul2->notify_attribute_usage(b2.build());
EXPECT_EQ(make_resource_usage("doctype2.0.ready.a1.comp", 15), get_usage());
b1.merge(notready_a1, 16);
aul1->notify_attribute_usage(b1.build());
EXPECT_EQ(make_resource_usage("doctype1.2.notready.a1.comp", 16), get_usage());
b1.reset().merge(ready_a1, 10).merge(ready_a2, 5);
aul1->notify_attribute_usage(b1.build());
EXPECT_EQ(make_resource_usage("doctype2.0.ready.a1.comp", 15), get_usage());
aul2.reset();
EXPECT_EQ(make_resource_usage("doctype1.0.ready.a1.comp", 10), get_usage());
aul1.reset();
EXPECT_EQ(make_resource_usage("", 0), get_usage());
aul2 = _tracker->make_attribute_usage_listener("doctype2");
aul2->notify_attribute_usage(b2.build());
EXPECT_EQ(make_resource_usage("doctype2.0.ready.a1.comp", 15), get_usage());
}
TEST_F(ResourceUsageTrackerTest, can_skip_scan_when_aggregating_attributes)
{
notify(0.0, 0.0);
auto register_guard = _tracker->set_listener(*_listener);
auto aul1 = _tracker->make_attribute_usage_listener("doctype1");
auto aul2 = _tracker->make_attribute_usage_listener("doctype2");
AttributeUsageStatsBuilder b1;
AttributeUsageStatsBuilder b2;
b1.merge(ready_a1, 20).merge(ready_a2, 5);
b2.merge(ready_a1, 15);
aul1->notify_attribute_usage(b1.build());
EXPECT_EQ(make_resource_usage("doctype1.0.ready.a1.comp", 20), get_usage());
EXPECT_EQ(2u, get_update_count());
aul1->notify_attribute_usage(b1.build());
EXPECT_EQ(make_resource_usage("doctype1.0.ready.a1.comp", 20), get_usage());
EXPECT_EQ(2u, get_update_count()); // usage for doctype1 has not changed
aul2->notify_attribute_usage(b2.build());
EXPECT_EQ(make_resource_usage("doctype1.0.ready.a1.comp", 20), get_usage());
EXPECT_EQ(2u, get_update_count()); // usage for doctype2 is less than usage for doctype1
aul2.reset();
aul1.reset();
EXPECT_EQ(4u, get_update_count()); // never skip scan when removing document type
}
GTEST_MAIN_RUN_ALL_TESTS()
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