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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vdstestlib/cppunit/macros.h>
#include <tests/persistence/persistencetestutils.h>
#include <tests/persistence/common/persistenceproviderwrapper.h>
namespace storage {
// TODO rename file
class ProviderErrorWrapperTest : public SingleDiskPersistenceTestUtils {
public:
CPPUNIT_TEST_SUITE(ProviderErrorWrapperTest);
CPPUNIT_TEST(testShutdownOnFatalError);
CPPUNIT_TEST(fatal_error_invokes_listener);
CPPUNIT_TEST(resource_exhaustion_error_invokes_listener);
CPPUNIT_TEST(listener_not_invoked_on_success);
CPPUNIT_TEST(listener_not_invoked_on_regular_errors);
CPPUNIT_TEST(multiple_listeners_can_be_registered);
CPPUNIT_TEST_SUITE_END();
void testShutdownOnFatalError();
void fatal_error_invokes_listener();
void resource_exhaustion_error_invokes_listener();
void listener_not_invoked_on_success();
void listener_not_invoked_on_regular_errors();
void multiple_listeners_can_be_registered();
};
CPPUNIT_TEST_SUITE_REGISTRATION(ProviderErrorWrapperTest);
namespace {
class TestShutdownListener
: public framework::defaultimplementation::ShutdownListener
{
public:
TestShutdownListener() : _reason() {}
void requestShutdown(vespalib::stringref reason) override {
_reason = reason;
}
bool shutdownRequested() const { return !_reason.empty(); }
const vespalib::string& getReason() const { return _reason; }
private:
vespalib::string _reason;
};
struct MockErrorListener : ProviderErrorListener {
void on_fatal_error(vespalib::stringref message) override {
_seen_fatal_error = true;
_fatal_error = message;
}
void on_resource_exhaustion_error(vespalib::stringref message) override {
_seen_resource_exhaustion_error = true;
_resource_exhaustion_error = message;
}
vespalib::string _fatal_error;
vespalib::string _resource_exhaustion_error;
bool _seen_fatal_error{false};
bool _seen_resource_exhaustion_error{false};
};
struct Fixture {
// We wrap the wrapper. It's turtles all the way down!
PersistenceProviderWrapper providerWrapper;
TestServiceLayerApp app;
ServiceLayerComponent component;
ProviderErrorWrapper errorWrapper;
Fixture(spi::PersistenceProvider& provider)
: providerWrapper(provider),
app(),
component(app.getComponentRegister(), "dummy"),
errorWrapper(providerWrapper, component)
{
providerWrapper.setFailureMask(PersistenceProviderWrapper::FAIL_ALL_OPERATIONS);
}
~Fixture();
void perform_spi_operation() {
errorWrapper.getBucketInfo(spi::Bucket(document::BucketId(16, 1234), spi::PartitionId(0)));
}
};
Fixture::~Fixture() {}
}
void ProviderErrorWrapperTest::fatal_error_invokes_listener() {
Fixture f(getPersistenceProvider());
auto listener = std::make_shared<MockErrorListener>();
f.errorWrapper.register_error_listener(listener);
f.providerWrapper.setResult(spi::Result(spi::Result::FATAL_ERROR, "eject! eject!"));
CPPUNIT_ASSERT(!listener->_seen_fatal_error);
f.perform_spi_operation();
CPPUNIT_ASSERT(!listener->_seen_resource_exhaustion_error);
CPPUNIT_ASSERT(listener->_seen_fatal_error);
CPPUNIT_ASSERT_EQUAL(vespalib::string("eject! eject!"), listener->_fatal_error);
}
void ProviderErrorWrapperTest::resource_exhaustion_error_invokes_listener() {
Fixture f(getPersistenceProvider());
auto listener = std::make_shared<MockErrorListener>();
f.errorWrapper.register_error_listener(listener);
f.providerWrapper.setResult(spi::Result(spi::Result::RESOURCE_EXHAUSTED, "out of juice"));
CPPUNIT_ASSERT(!listener->_seen_resource_exhaustion_error);
f.perform_spi_operation();
CPPUNIT_ASSERT(!listener->_seen_fatal_error);
CPPUNIT_ASSERT(listener->_seen_resource_exhaustion_error);
CPPUNIT_ASSERT_EQUAL(vespalib::string("out of juice"), listener->_resource_exhaustion_error);
}
void ProviderErrorWrapperTest::listener_not_invoked_on_success() {
Fixture f(getPersistenceProvider());
auto listener = std::make_shared<MockErrorListener>();
f.errorWrapper.register_error_listener(listener);
f.perform_spi_operation();
CPPUNIT_ASSERT(!listener->_seen_fatal_error);
CPPUNIT_ASSERT(!listener->_seen_resource_exhaustion_error);
}
void ProviderErrorWrapperTest::listener_not_invoked_on_regular_errors() {
Fixture f(getPersistenceProvider());
auto listener = std::make_shared<MockErrorListener>();
f.errorWrapper.register_error_listener(listener);
// TODO dedupe
f.providerWrapper.setResult(spi::Result(spi::Result::TRANSIENT_ERROR, "beep boop"));
f.perform_spi_operation();
CPPUNIT_ASSERT(!listener->_seen_fatal_error);
CPPUNIT_ASSERT(!listener->_seen_resource_exhaustion_error);
f.providerWrapper.setResult(spi::Result(spi::Result::PERMANENT_ERROR, "beep boop!!"));
f.perform_spi_operation();
CPPUNIT_ASSERT(!listener->_seen_fatal_error);
CPPUNIT_ASSERT(!listener->_seen_resource_exhaustion_error);
}
void ProviderErrorWrapperTest::multiple_listeners_can_be_registered() {
Fixture f(getPersistenceProvider());
auto listener1 = std::make_shared<MockErrorListener>();
auto listener2 = std::make_shared<MockErrorListener>();
f.errorWrapper.register_error_listener(listener1);
f.errorWrapper.register_error_listener(listener2);
f.providerWrapper.setResult(spi::Result(spi::Result::RESOURCE_EXHAUSTED, "out of juice"));
f.perform_spi_operation();
CPPUNIT_ASSERT(listener1->_seen_resource_exhaustion_error);
CPPUNIT_ASSERT(listener2->_seen_resource_exhaustion_error);
}
// TODO rewrite, move component interaction testing elsewhere
void
ProviderErrorWrapperTest::testShutdownOnFatalError() {
Fixture f(getPersistenceProvider());
TestShutdownListener shutdownListener;
f.app.getComponentRegister().registerShutdownListener(shutdownListener);
f.providerWrapper.setResult(
spi::Result(spi::Result::FATAL_ERROR, "eject! eject!"));
f.providerWrapper.setFailureMask(
PersistenceProviderWrapper::FAIL_ALL_OPERATIONS);
CPPUNIT_ASSERT(!shutdownListener.shutdownRequested());
// This should cause the node to implicitly be shut down
f.errorWrapper.getBucketInfo(
spi::Bucket(document::BucketId(16, 1234),
spi::PartitionId(0)));
CPPUNIT_ASSERT(shutdownListener.shutdownRequested());
CPPUNIT_ASSERT_EQUAL(vespalib::string("eject! eject!"),
shutdownListener.getReason());
// Triggering a new error should not cause shutdown to be requested twice.
f.providerWrapper.setResult(
spi::Result(spi::Result::FATAL_ERROR, "boom!"));
f.errorWrapper.getBucketInfo(
spi::Bucket(document::BucketId(16, 1234),
spi::PartitionId(0)));
CPPUNIT_ASSERT_EQUAL(vespalib::string("eject! eject!"),
shutdownListener.getReason());
}
} // ns storage
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