4cb79f04b0
In order to eventually switch to a single JSON library, most of the libjsoncpp usage is dropped in favor of rjson. Unfortunately, one usage still remains: test/utils/test_repl utility heavily depends on the *exact textual* format of its output JSON files, so replacing a library results in all tests failing because of differences in formatting. It is possible to force rjson to print its documents in the exact matching format, but that's left for later, since the issue is not critical. It would be nice though if our test suite compared JSON documents with a real JSON parser, since there are more differences - e.g. libjsoncpp keeps children of the object sorted, while rapidjson uses an unordered data structure. This change should cause no change in semantics, it strives just to replace all usage of libjsoncpp with rjson.
121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
/*
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* Copyright (C) 2015 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 <seastar/core/sstring.hh>
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#include <boost/lexical_cast.hpp>
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#include "exceptions/exceptions.hh"
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#include "utils/rjson.hh"
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#include "seastarx.hh"
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class schema;
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class caching_options {
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// For Origin, the default value for the row is "NONE". However, since our
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// row_cache will cache both keys and rows, we will default to ALL.
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//
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// FIXME: We don't yet make any changes to our caching policies based on
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// this (and maybe we shouldn't)
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static constexpr auto default_key = "ALL";
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static constexpr auto default_row = "ALL";
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sstring _key_cache;
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sstring _row_cache;
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bool _enabled = true;
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caching_options(sstring k, sstring r, bool enabled)
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: _key_cache(k), _row_cache(r), _enabled(enabled)
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{
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if ((k != "ALL") && (k != "NONE")) {
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throw exceptions::configuration_exception("Invalid key value: " + k);
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}
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if ((r == "ALL") || (r == "NONE")) {
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return;
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} else {
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try {
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boost::lexical_cast<unsigned long>(r);
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} catch (boost::bad_lexical_cast& e) {
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throw exceptions::configuration_exception("Invalid key value: " + r);
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}
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}
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}
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friend class schema;
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caching_options() : _key_cache(default_key), _row_cache(default_row) {}
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public:
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bool enabled() const {
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return _enabled;
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}
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std::map<sstring, sstring> to_map() const {
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std::map<sstring, sstring> res = {{ "keys", _key_cache },
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{ "rows_per_partition", _row_cache }};
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if (!_enabled) {
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res.insert({"enabled", "false"});
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}
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return res;
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}
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sstring to_sstring() const {
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return rjson::print(rjson::from_string_map(to_map()));
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}
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static caching_options get_disabled_caching_options() {
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return caching_options("NONE", "NONE", false);
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}
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template<typename Map>
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static caching_options from_map(const Map & map) {
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sstring k = default_key;
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sstring r = default_row;
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bool e = true;
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for (auto& p : map) {
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if (p.first == "keys") {
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k = p.second;
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} else if (p.first == "rows_per_partition") {
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r = p.second;
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} else if (p.first == "enabled") {
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e = p.second == "true";
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} else {
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throw exceptions::configuration_exception(format("Invalid caching option: {}", p.first));
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}
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}
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return caching_options(k, r, e);
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}
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static caching_options from_sstring(const sstring& str) {
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return from_map(rjson::parse_to_map<std::map<sstring, sstring>>(str));
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}
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bool operator==(const caching_options& other) const {
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return _key_cache == other._key_cache && _row_cache == other._row_cache
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&& _enabled == other._enabled;
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}
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bool operator!=(const caching_options& other) const {
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return !(*this == other);
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}
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};
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