ee1d87a600
This add a wrapper around the lua interpreter so that function executions are interruptible and return futures. With this patch it is possible to write and use simple UDFs that take and return integer values. Signed-off-by: Rafael Ávila de Espíndola <espindola@scylladb.com>
47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
/*
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* Copyright (C) 2019 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "types.hh"
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#include "utils/updateable_value.hh"
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#include "db/config.hh"
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#include <seastar/core/future.hh>
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namespace lua {
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// type safe alias
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struct bitcode_view {
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std::string_view bitcode;
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};
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struct runtime_config {
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utils::updateable_value<unsigned> timeout_in_ms;
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utils::updateable_value<unsigned> max_bytes;
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utils::updateable_value<unsigned> max_contiguous;
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};
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runtime_config make_runtime_config(const db::config& config);
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sstring compile(const runtime_config& cfg, const std::vector<sstring>& arg_names, sstring script);
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seastar::future<bytes> run_script(bitcode_view bitcode, const std::vector<data_value>& values,
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data_type return_type, const runtime_config& cfg);
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}
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