6d907e43e0
The config API is created dynamically from the config. This mean that the swagger definition file will contain the description and types based on the configuration. The config.json file is used by the code generator to define a path that is used to register the handler function. Signed-off-by: Amnon Heiman <amnon@scylladb.com>
113 lines
3.4 KiB
C++
113 lines
3.4 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 <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 format_type(const std::string& 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(const std::string& name, const std::string& description, const std::string& 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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#define _get_config_value(name, type, deflt, status, desc, ...) if (id == #name) {return get_json_return_type(ctx.db.local().get_config().name());}
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#define _get_config_description(name, type, deflt, status, desc, ...) f = f.then([&os, &first] {return get_config_swagger_entry(#name, desc, #type, first, os);});
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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, [] (output_stream<char>& os) {
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return do_with(true, [&os] (bool& first) {
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auto f = make_ready_future();
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_make_config_values(_get_config_description)
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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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_make_config_values(_get_config_value)
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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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