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// Copyright Vespa.ai. 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/vespalib/util/size_literals.h>
#include <vespa/vespalib/util/cpu_usage.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;
using vespalib::CpuUsage;
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) {
const Inspector &root = reply.root();
return root[DOCSUMS].entries();
}
VESPA_THREAD_STACK_TAG(summary_engine_executor)
} // 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, bool async)
: _lock(),
_async(async),
_closed(false),
_forward_issues(true),
_handlers(),
_executor(numThreads, CpuUsage::wrap(summary_engine_executor, CpuUsage::Category::READ)),
_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) {
vespalib::Issue::report("Received docsum request after engine has been shutdown");
auto ret = std::make_unique<DocsumReply>();
return ret;
}
if (_async) {
auto task = std::make_unique<DocsumTask>(*this, std::move(request), client);
_executor.execute(std::move(task));
return DocsumReply::UP();
}
return getDocsums(request.release());
}
DocsumReply::UP
SummaryEngine::getDocsums(DocsumRequest::UP req)
{
auto my_issues = std::make_unique<search::UniqueIssues>();
auto capture_issues = vespalib::Issue::listen(*my_issues);
DocsumReply::UP reply;
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));
if (req->expired()) {
vespalib::Issue::report("docsum request timed out; results may be incomplete");
}
}
if (! reply) {
reply = std::make_unique<DocsumReply>();
}
reply->setRequest(std::move(req));
if (_forward_issues) {
reply->setIssues(std::move(my_issues));
} else {
my_issues->for_each_message([](const auto &msg){
LOG(warning, "unhandled issue: %s", msg.c_str());
});
}
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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