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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 "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/log/log.h>
LOG_SETUP(".proton.matchengine.matchengine");
namespace {
class SearchTask : public vespalib::Executor::Task {
private:
proton::MatchEngine &_engine;
search::engine::SearchRequest::Source _request;
search::engine::SearchClient &_client;
public:
SearchTask(proton::MatchEngine &engine,
search::engine::SearchRequest::Source request,
search::engine::SearchClient &client)
: _engine(engine),
_request(std::move(request)),
_client(client)
{
// empty
}
void run() override {
_engine.performSearch(std::move(_request), _client);
}
};
} // namespace anon
namespace proton {
using namespace vespalib::slime;
MatchEngine::MatchEngine(size_t numThreads, size_t threadsPerSearch, uint32_t distributionKey)
: _lock(),
_distributionKey(distributionKey),
_closed(false),
_handlers(),
_executor(std::max(size_t(1), numThreads / threadsPerSearch), 256 * 1024),
_threadBundlePool(std::max(size_t(1), threadsPerSearch)),
_nodeUp(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);
}
search::engine::SearchReply::UP
MatchEngine::search(search::engine::SearchRequest::Source request,
search::engine::SearchClient &client)
{
if (_closed || !_nodeUp) {
auto ret = std::make_unique<search::engine::SearchReply>();
ret->setDistributionKey(_distributionKey);
// TODO: Notify closed.
return ret;
}
_executor.execute(std::make_unique<SearchTask>(*this, std::move(request), client));
return search::engine::SearchReply::UP();
}
void
MatchEngine::performSearch(search::engine::SearchRequest::Source req,
search::engine::SearchClient &client)
{
auto ret = std::make_unique<search::engine::SearchReply>();
const search::engine::SearchRequest * searchRequest = req.get();
if (searchRequest) {
// 3 is the minimum level required for backend tracing.
searchRequest->setTraceLevel(search::fef::indexproperties::trace::Level::lookup(searchRequest->propertiesMap.modelOverrides(), searchRequest->getTraceLevel()), 3);
ISearchHandler::SP searchHandler;
vespalib::SimpleThreadBundle::UP threadBundle = _threadBundlePool.obtain();
{ // 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);
}
if (searchHandler) {
ret = searchHandler->match(*searchRequest, *threadBundle);
} else {
HandlerMap<ISearchHandler>::Snapshot snapshot;
{
std::lock_guard<std::mutex> guard(_lock);
snapshot = _handlers.snapshot();
}
if (snapshot.valid()) {
ret = snapshot.get()->match(*searchRequest, *threadBundle); // use the first handler
}
}
_threadBundlePool.release(std::move(threadBundle));
}
ret->request = req.release();
ret->setDistributionKey(_distributionKey);
if ((ret->request->trace().getLevel() > 0) && ret->request->trace().hasTrace()) {
ret->request->trace().getRoot().setLong("distribution-key", _distributionKey);
ret->request->trace().done();
search::fef::Properties & trace = ret->propertiesMap.lookupCreate("trace");
vespalib::SmartBuffer output(4096);
vespalib::slime::BinaryFormat::encode(ret->request->trace().getSlime(), output);
trace.add("slime", output.obtain().make_stringref());
}
client.searchDone(std::move(ret));
}
bool MatchEngine::isOnline() const {
return _nodeUp;
}
void
MatchEngine::setNodeUp(bool nodeUp)
{
_nodeUp = nodeUp;
}
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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