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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "matchengine.h"
#include <vespa/searchcore/proton/common/state_reporter_utils.h>
#include <vespa/searchlib/fef/indexproperties.h>
#include <vespa/vespalib/data/slime/cursor.h>
#include <vespa/vespalib/data/smart_buffer.h>
#include <vespa/vespalib/data/slime/binary_format.h>
#include <vespa/vespalib/util/size_literals.h>
#include <vespa/vespalib/util/cpu_usage.h>
#include <vespa/log/log.h>
LOG_SETUP(".proton.matchengine.matchengine");
using search::engine::SearchRequest;
using search::engine::SearchReply;
using search::engine::SearchClient;
using namespace search::fef::indexproperties;
namespace {
class SearchTask : public vespalib::Executor::Task {
private:
proton::MatchEngine &_engine;
SearchRequest::Source _request;
SearchClient &_client;
public:
SearchTask(proton::MatchEngine &engine, SearchRequest::Source request, SearchClient &client)
: _engine(engine),
_request(std::move(request)),
_client(client)
{ }
void run() override {
_client.searchDone(_engine.performSearch(std::move(_request)));
}
};
VESPA_THREAD_STACK_TAG(match_engine_executor)
VESPA_THREAD_STACK_TAG(match_engine_thread_bundle)
} // namespace anon
namespace proton {
using namespace vespalib::slime;
using vespalib::CpuUsage;
MatchEngine::MatchEngine(size_t numThreads, size_t threadsPerSearch, uint32_t distributionKey, bool async)
: _lock(),
_distributionKey(distributionKey),
_async(async),
_closed(false),
_forward_issues(true),
_handlers(),
_executor(std::max(size_t(1), numThreads / threadsPerSearch),
CpuUsage::wrap(match_engine_executor, CpuUsage::Category::READ)),
_threadBundlePool(std::max(size_t(1), threadsPerSearch),
CpuUsage::wrap(match_engine_thread_bundle, CpuUsage::Category::READ)),
_nodeUp(false),
_nodeMaintenance(false)
{
}
MatchEngine::~MatchEngine()
{
_executor.shutdown().sync();
}
void
MatchEngine::close()
{
LOG(debug, "Closing search interface.");
{
std::lock_guard<std::mutex> guard(_lock);
_closed = true;
}
LOG(debug, "Handshaking with task manager.");
_executor.sync();
}
ISearchHandler::SP
MatchEngine::putSearchHandler(const DocTypeName &docTypeName,
const ISearchHandler::SP &searchHandler)
{
std::lock_guard<std::mutex> guard(_lock);
return _handlers.putHandler(docTypeName, searchHandler);
}
ISearchHandler::SP
MatchEngine::getSearchHandler(const DocTypeName &docTypeName)
{
std::lock_guard<std::mutex> guard(_lock);
return _handlers.getHandler(docTypeName);
}
ISearchHandler::SP
MatchEngine::removeSearchHandler(const DocTypeName &docTypeName)
{
std::lock_guard<std::mutex> guard(_lock);
return _handlers.removeHandler(docTypeName);
}
SearchReply::UP
MatchEngine::search(SearchRequest::Source request, SearchClient &client)
{
// We continue to allow searches if the node is in Maintenance mode
if (_closed || (!_nodeUp && !_nodeMaintenance.load(std::memory_order_relaxed))) {
auto ret = std::make_unique<SearchReply>();
ret->setDistributionKey(_distributionKey);
// TODO: Notify closed.
return ret;
}
if (_async) {
_executor.execute(std::make_unique<SearchTask>(*this, std::move(request), client));
return {};
}
return performSearch(std::move(request));
}
std::unique_ptr<SearchReply>
MatchEngine::doSearch(const SearchRequest & searchRequest) {
if (searchRequest.expired()) {
vespalib::Issue::report("Query timed out in the query Q.");
return std::make_unique<SearchReply>();
}
// 3 is the minimum level required for backend tracing.
searchRequest.setTraceLevel(trace::Level::lookup(searchRequest.propertiesMap.modelOverrides(),
searchRequest.trace().getLevel()), 3);
ISearchHandler::SP searchHandler;
auto threadBundle = _threadBundlePool.getBundle();
{ // try to find the match handler corresponding to the specified search doc type
DocTypeName docTypeName(searchRequest);
std::lock_guard<std::mutex> guard(_lock);
searchHandler = _handlers.getHandler(docTypeName);
}
std::unique_ptr<SearchReply> ret;
if (searchHandler) {
ret = searchHandler->match(searchRequest, threadBundle.bundle());
} else {
HandlerMap<ISearchHandler>::Snapshot snapshot;
{
std::lock_guard<std::mutex> guard(_lock);
snapshot = _handlers.snapshot();
}
ret = (snapshot.valid())
? snapshot.get()->match(searchRequest, threadBundle.bundle()) // use the first handler
: std::make_unique<SearchReply>();
}
if (searchRequest.expired()) {
vespalib::Issue::report("search request timed out; results may be incomplete");
}
return ret;
}
std::unique_ptr<SearchReply>
MatchEngine::performSearch(SearchRequest::Source req)
{
auto my_issues = std::make_unique<search::UniqueIssues>();
auto capture_issues = vespalib::Issue::listen(*my_issues);
const SearchRequest * searchRequest = req.get();
auto ret = (searchRequest)
? doSearch(*searchRequest)
: std::make_unique<SearchReply>();
ret->request = req.release();
if (_forward_issues) {
ret->my_issues = std::move(my_issues);
} else {
my_issues->for_each_message([](const auto &msg){
LOG(warning, "unhandled issue: %s", msg.c_str());
});
}
ret->setDistributionKey(_distributionKey);
if ((ret->request->trace().getLevel() > 0) && ret->request->trace().hasTrace()) {
ret->request->trace().getRoot().setLong("distribution-key", _distributionKey);
DocTypeName doc_type(*ret->request);
ret->request->trace().getRoot().setString("document-type", doc_type.getName());
ret->request->trace().done();
search::fef::Properties & trace = ret->propertiesMap.lookupCreate("trace");
vespalib::SmartBuffer output(4_Ki);
vespalib::slime::BinaryFormat::encode(ret->request->trace().getSlime(), output);
trace.add("slime", output.obtain().make_stringref());
}
return ret;
}
bool MatchEngine::isOnline() const {
return _nodeUp.load(std::memory_order_relaxed);
}
void
MatchEngine::setNodeUp(bool nodeUp)
{
_nodeUp.store(nodeUp, std::memory_order_relaxed);
}
void
MatchEngine::setNodeMaintenance(bool nodeMaintenance)
{
_nodeMaintenance.store(nodeMaintenance, std::memory_order_relaxed);
if (nodeMaintenance) {
_nodeUp.store(false, std::memory_order_relaxed);
}
}
StatusReport::UP
MatchEngine::reportStatus() const
{
if (isOnline()) {
return StatusReport::create(StatusReport::Params("matchengine").
state(StatusReport::UPOK).
internalState("ONLINE"));
} else {
return StatusReport::create(StatusReport::Params("matchengine").
state(StatusReport::DOWN).
internalState("OFFLINE").
message("Search interface is offline"));
}
}
void
MatchEngine::get_state(const Inserter &inserter, bool full) const
{
(void) full;
Cursor &object = inserter.insertObject();
StateReporterUtils::convertToSlime(*reportStatus(), ObjectInserter(object, "status"));
}
} // namespace proton
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