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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/metrics/metrics.h>
#include <vespa/vespalib/gtest/gtest.h>
#include <vespa/vespalib/objects/floatingpointtype.h>
namespace metrics {
namespace {
struct TestMetricVisitor : public MetricVisitor {
std::ostringstream ost;
uint32_t setsToVisit;
TestMetricVisitor(uint32_t setsToVisit_ = 100)
: ost(), setsToVisit(setsToVisit_) {}
bool visitMetricSet(const MetricSet& set, bool autoGenerated) override {
ost << "[" << (autoGenerated ? "*" : "") << set.getName() << "]\n";
if (setsToVisit > 0) {
--setsToVisit;
return true;
}
return false;
}
bool visitMetric(const Metric& m, bool autoGenerated) override {
ost << (autoGenerated ? "*" : "") << m.getName() << "\n";
return true;
}
};
}
TEST(MetricSetTest, test_normal_usage)
{
// Set up some metrics to test..
MetricSet set("a", {{"foo"}}, "");
DoubleValueMetric v1("c", {{"foo"}}, "", &set);
LongAverageMetric v2("b", {}, "", &set);
LongCountMetric v3("d", {{"bar"}}, "", &set);
MetricSet set2("e", {{"bar"}}, "", &set);
LongCountMetric v4("f", {{"foo"}}, "", &set2);
// Give them some values
v1.addValue(4.2);
v2.addValue(8);
v3.inc();
v4.inc(3);
// Check that we can register through registerMetric function too.
LongCountMetric v5("g", {}, "");
set.registerMetric(v5);
v5.inc(3);
v5.dec();
// Check that getMetric works, and doesn't return copy.
LongAverageMetric* v2copy(
dynamic_cast<LongAverageMetric*>(set.getMetric("b")));
ASSERT_TRUE(v2copy != 0);
v2copy->addValue(9);
Metric* nonExistingCopy = set.getMetric("nonexisting");
EXPECT_TRUE(nonExistingCopy == 0);
nonExistingCopy = set.getMetric("non.existing");
EXPECT_TRUE(nonExistingCopy == 0);
// Check that paths are set
MetricSet topSet("top", {}, "");
topSet.registerMetric(set);
EXPECT_EQ(vespalib::string("a"), set.getPath());
EXPECT_EQ(vespalib::string("a.c"), v1.getPath());
EXPECT_EQ(vespalib::string("a.b"), v2.getPath());
EXPECT_EQ(vespalib::string("a.d"), v3.getPath());
EXPECT_EQ(vespalib::string("a.e"), set2.getPath());
EXPECT_EQ(vespalib::string("a.e.f"), v4.getPath());
EXPECT_EQ(vespalib::string("a.g"), v5.getPath());
EXPECT_EQ(vespalib::string("a.b"), v2copy->getPath());
// Verify XML output. Should be in register order.
std::string expected("'\n"
"a:\n"
" c average=4.2 last=4.2 min=4.2 max=4.2 count=1 total=4.2\n"
" b average=8.5 last=9 min=8 max=9 count=2 total=17\n"
" d count=1\n"
" e:\n"
" f count=3\n"
" g count=2'"
);
EXPECT_EQ(expected, "'\n" + set.toString() + "'");
// Verify that visiting works. That you get all metrics if you answer
// true to all sets, and that you don't get members of sets you answer
// false to get.
{
TestMetricVisitor visitor(2);
set.visit(visitor);
expected = "[a]\nc\nb\nd\n[e]\nf\ng\n";
EXPECT_EQ("\n" + expected, "\n" + visitor.ost.str());
}
{
TestMetricVisitor visitor(1);
set.visit(visitor);
expected = "[a]\nc\nb\nd\n[e]\ng\n";
EXPECT_EQ("\n" + expected, "\n" + visitor.ost.str());
}
{
TestMetricVisitor visitor(0);
set.visit(visitor);
expected = "[a]\n";
EXPECT_EQ("\n" + expected, "\n" + visitor.ost.str());
}
}
TEST(MetricSetTest, support_multiple_metrics_with_same_name_different_dimensions)
{
MetricSet set("dimset", {{"foo", "bar"}}, "");
DoubleValueMetric v1("stuff", {{"baz", "blarg"}}, "", &set);
LongAverageMetric v2("stuff", {{"flarn", "yarn"}}, "", &set);
EXPECT_EQ(size_t(2), set.getRegisteredMetrics().size());
}
TEST(MetricSetTest, unique_target_metrics_are_added_to_metric_set)
{
MetricSet set1("a", {{"foo"}}, "");
LongCountMetric v1("wow", {{"foo"}}, "", &set1);
MetricSet set2("e", {{"bar"}}, "");
LongCountMetric v2("doge", {{"foo"}}, "", &set2);
// Have to actually assign a value to metrics or they won't be carried over.
v1.inc();
v2.inc();
// 'doge' metric in set2 must be preserved even though it does not exist
// in set1.
std::vector<Metric::UP> ownerList;
set1.addToSnapshot(set2, ownerList);
EXPECT_TRUE(set2.getMetric("wow") != nullptr);
EXPECT_TRUE(set2.getMetric("doge") != nullptr);
}
}
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