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3ed982df87
in this header, none of the exceptions defined by `exceptions/exceptions.hh` is used. so let's drop the `#include`. Signed-off-by: Kefu Chai <kefu.chai@scylladb.com> Closes #14718
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
/*
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* Copyright (C) 2015-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include <memory>
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#include <seastar/core/sharded.hh>
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#include <seastar/core/distributed.hh>
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#include <seastar/core/future.hh>
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#include "cql3/query_processor.hh"
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#include "cql3/query_options.hh"
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#include "db/timeout_clock.hh"
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#include "timeout_config.hh"
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namespace service {
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class storage_proxy;
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}
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namespace db {
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struct query_context {
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distributed<cql3::query_processor>& _qp;
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query_context(distributed<cql3::query_processor>& qp) : _qp(qp) {}
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template <typename... Args>
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future<::shared_ptr<cql3::untyped_result_set>> execute_cql(sstring req, Args&&... args) {
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return _qp.local().execute_internal(req, { data_value(std::forward<Args>(args))... }, cql3::query_processor::cache_internal::yes);
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}
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template <typename... Args>
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future<::shared_ptr<cql3::untyped_result_set>> execute_cql_with_timeout(sstring req,
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db::timeout_clock::time_point timeout,
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Args&&... args) {
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const db::timeout_clock::time_point now = db::timeout_clock::now();
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const db::timeout_clock::duration d =
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now < timeout ?
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timeout - now :
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// let the `storage_proxy` time out the query down the call chain
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db::timeout_clock::duration::zero();
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struct timeout_context {
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std::unique_ptr<service::client_state> client_state;
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service::query_state query_state;
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timeout_context(db::timeout_clock::duration d)
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: client_state(std::make_unique<service::client_state>(service::client_state::internal_tag{}, timeout_config{d, d, d, d, d, d, d}))
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, query_state(*client_state, empty_service_permit())
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{}
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};
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return do_with(timeout_context(d), [this, req = std::move(req), &args...] (auto& tctx) {
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return _qp.local().execute_internal(req,
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cql3::query_options::DEFAULT.get_consistency(),
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tctx.query_state,
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{ data_value(std::forward<Args>(args))... },
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cql3::query_processor::cache_internal::yes);
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});
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}
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cql3::query_processor& qp() {
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return _qp.local();
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}
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};
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// This does not have to be thread local, because all cores will share the same context.
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extern std::unique_ptr<query_context> qctx;
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}
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