b663cd1765
Now that named_value::value_as_json() exists, make use of it to report the current value of a configuration variable via the REST API, instead of _make_config_values().
120 lines
3.6 KiB
C++
120 lines
3.6 KiB
C++
/*
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* Copyright 2018 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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#include "api/config.hh"
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#include "api/api-doc/config.json.hh"
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#include "db/config.hh"
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#include "database.hh"
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#include <sstream>
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#include <boost/algorithm/string/replace.hpp>
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namespace api {
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template<class T>
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json::json_return_type get_json_return_type(const T& val) {
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return json::json_return_type(val);
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}
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/*
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* As commented on db::seed_provider_type is not used
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* and probably never will.
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*
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* Just in case, we will return its name
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*/
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template<>
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json::json_return_type get_json_return_type(const db::seed_provider_type& val) {
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return json::json_return_type(val.class_name);
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}
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std::string_view format_type(std::string_view type) {
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if (type == "int") {
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return "integer";
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}
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return type;
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}
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future<> get_config_swagger_entry(std::string_view name, const std::string& description, std::string_view type, bool& first, output_stream<char>& os) {
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std::stringstream ss;
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if (first) {
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first=false;
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} else {
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ss <<',';
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};
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ss << "\"/config/" << name <<"\": {"
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"\"get\": {"
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"\"description\": \"" << boost::replace_all_copy(boost::replace_all_copy(boost::replace_all_copy(description,"\n","\\n"),"\"", "''"), "\t", " ") <<"\","
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"\"operationId\": \"find_config_"<< name <<"\","
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"\"produces\": ["
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"\"application/json\""
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"],"
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"\"tags\": [\"config\"],"
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"\"parameters\": ["
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"],"
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"\"responses\": {"
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"\"200\": {"
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"\"description\": \"Config value\","
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"\"schema\": {"
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"\"type\": \"" << format_type(type) << "\""
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"}"
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"},"
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"\"default\": {"
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"\"description\": \"unexpected error\","
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"\"schema\": {"
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"\"$ref\": \"#/definitions/ErrorModel\""
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"}"
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"}"
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"}"
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"}"
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"}";
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return os.write(ss.str());
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}
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namespace cs = httpd::config_json;
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void set_config(std::shared_ptr < api_registry_builder20 > rb, http_context& ctx, routes& r) {
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rb->register_function(r, [&ctx] (output_stream<char>& os) {
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return do_with(true, [&os, &ctx] (bool& first) {
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auto f = make_ready_future();
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for (auto&& cfg_ref : ctx.db.local().get_config().values()) {
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auto&& cfg = cfg_ref.get();
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f = f.then([&os, &first, &cfg] {
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return get_config_swagger_entry(cfg.name(), std::string(cfg.desc()), cfg.type_name(), first, os);
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});
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}
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return f;
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});
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});
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cs::find_config_id.set(r, [&ctx] (const_req r) {
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auto id = r.param["id"];
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for (auto&& cfg_ref : ctx.db.local().get_config().values()) {
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auto&& cfg = cfg_ref.get();
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if (id == cfg.name()) {
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return cfg.value_as_json();
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}
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}
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throw bad_param_exception(sstring("No such config entry: ") + id);
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});
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}
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}
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