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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 "summaryengine.h"
#include <vespa/vespalib/data/slime/slime.h>
#include <vespa/log/log.h>
LOG_SETUP(".proton.summaryengine.summaryengine");
using namespace search::engine;
using namespace proton;
using vespalib::Memory;
using vespalib::slime::Inspector;
namespace {
Memory DOCSUMS("docsums");
class DocsumTask : public vespalib::Executor::Task {
private:
SummaryEngine & _engine;
DocsumClient & _client;
DocsumRequest::Source _request;
public:
DocsumTask(SummaryEngine & engine, DocsumRequest::Source request, DocsumClient & client)
: _engine(engine),
_client(client),
_request(std::move(request))
{
}
void run() override {
_client.getDocsumsDone(_engine.getDocsums(_request.release()));
}
};
uint32_t getNumDocs(const DocsumReply &reply) {
if (reply._root) {
const Inspector &root = reply._root->get();
return root[DOCSUMS].entries();
} else {
return reply.docsums.size();
}
}
} // namespace anonymous
namespace proton {
SummaryEngine::DocsumMetrics::DocsumMetrics()
: metrics::MetricSet("docsum", {}, "Docsum metrics", nullptr),
count("count", {{"logdefault"}}, "Docsum requests handled", this),
docs("docs", {{"logdefault"}}, "Total docsums returned", this),
latency("latency", {{"logdefault"}}, "Docsum request latency", this)
{
}
SummaryEngine::DocsumMetrics::~DocsumMetrics() = default;
SummaryEngine::SummaryEngine(size_t numThreads)
: _lock(),
_closed(false),
_handlers(),
_executor(numThreads, 128 * 1024),
_metrics(std::make_unique<DocsumMetrics>())
{ }
SummaryEngine::~SummaryEngine()
{
_executor.shutdown();
}
void
SummaryEngine::close()
{
LOG(debug, "Closing summary engine");
{
std::lock_guard<std::mutex> guard(_lock);
_closed = true;
}
LOG(debug, "Handshaking with task manager");
_executor.sync();
}
ISearchHandler::SP
SummaryEngine::putSearchHandler(const DocTypeName &docTypeName, const ISearchHandler::SP & searchHandler)
{
std::lock_guard<std::mutex> guard(_lock);
return _handlers.putHandler(docTypeName, searchHandler);
}
ISearchHandler::SP
SummaryEngine::getSearchHandler(const DocTypeName &docTypeName)
{
std::lock_guard<std::mutex> guard(_lock);
return _handlers.getHandler(docTypeName);
}
ISearchHandler::SP
SummaryEngine::removeSearchHandler(const DocTypeName &docTypeName)
{
std::lock_guard<std::mutex> guard(_lock);
return _handlers.removeHandler(docTypeName);
}
DocsumReply::UP
SummaryEngine::getDocsums(DocsumRequest::Source request, DocsumClient & client)
{
if (_closed) {
LOG(warning, "Receiving docsumrequest after engine has been shutdown");
DocsumReply::UP ret(new DocsumReply());
// TODO: Notify closed.
return ret;
}
vespalib::Executor::Task::UP task(new DocsumTask(*this, std::move(request), client));
_executor.execute(std::move(task));
return DocsumReply::UP();
}
DocsumReply::UP
SummaryEngine::getDocsums(DocsumRequest::UP req)
{
DocsumReply::UP reply = std::make_unique<DocsumReply>();
if (req) {
ISearchHandler::SP searchHandler = getSearchHandler(DocTypeName(*req));
if (searchHandler) {
reply = searchHandler->getDocsums(*req);
} else {
HandlerMap<ISearchHandler>::Snapshot snapshot;
{
std::lock_guard<std::mutex> guard(_lock);
snapshot = _handlers.snapshot();
}
if (snapshot.valid()) {
reply = snapshot.get()->getDocsums(*req); // use the first handler
}
}
updateDocsumMetrics(vespalib::to_s(req->getTimeUsed()), getNumDocs(*reply));
}
reply->request = std::move(req);
return reply;
}
void
SummaryEngine::updateDocsumMetrics(double latency_s, uint32_t numDocs)
{
std::lock_guard guard(_lock);
DocsumMetrics & m = static_cast<DocsumMetrics &>(*_metrics);
m.count.inc();
m.docs.inc(numDocs);
m.latency.set(latency_s);
}
} // namespace proton
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