32e79fc23b
Use std::function instead of a template parameter. Likely doesn't gain anyting, because the template was always instantiated with the same type (the result of std::bind() with the same signatures), but still good practice. std::function was used instead of noncopyable_function because sharded::map_reduce0() copies the input function.
80 lines
2.9 KiB
C++
80 lines
2.9 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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#include "commitlog.hh"
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#include <db/commitlog/commitlog.hh>
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#include "api/api-doc/commitlog.json.hh"
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#include "database.hh"
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#include <vector>
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namespace api {
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template<typename T>
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static auto acquire_cl_metric(http_context& ctx, std::function<T (db::commitlog*)> func) {
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typedef T ret_type;
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return ctx.db.map_reduce0([func = std::move(func)](database& db) {
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if (db.commitlog() == nullptr) {
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return make_ready_future<ret_type>();
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}
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return make_ready_future<ret_type>(func(db.commitlog()));
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}, ret_type(), std::plus<ret_type>()).then([](ret_type res) {
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return make_ready_future<json::json_return_type>(res);
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});
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}
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void set_commitlog(http_context& ctx, routes& r) {
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httpd::commitlog_json::get_active_segment_names.set(r,
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[&ctx](std::unique_ptr<request> req) {
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auto res = make_shared<std::vector<sstring>>();
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return ctx.db.map_reduce([res](std::vector<sstring> names) {
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res->insert(res->end(), names.begin(), names.end());
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}, [](database& db) {
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if (db.commitlog() == nullptr) {
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return make_ready_future<std::vector<sstring>>(std::vector<sstring>());
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}
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return make_ready_future<std::vector<sstring>>(db.commitlog()->get_active_segment_names());
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}).then([res] {
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return make_ready_future<json::json_return_type>(*res.get());
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});
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});
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// We currently do not support archive segments
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httpd::commitlog_json::get_archiving_segment_names.set(r, [](const_req req) {
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std::vector<sstring> res;
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return res;
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});
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httpd::commitlog_json::get_completed_tasks.set(r, [&ctx](std::unique_ptr<request> req) {
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return acquire_cl_metric<uint64_t>(ctx, std::bind(&db::commitlog::get_completed_tasks, std::placeholders::_1));
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});
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httpd::commitlog_json::get_pending_tasks.set(r, [&ctx](std::unique_ptr<request> req) {
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return acquire_cl_metric<uint64_t>(ctx, std::bind(&db::commitlog::get_pending_tasks, std::placeholders::_1));
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});
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httpd::commitlog_json::get_total_commit_log_size.set(r, [&ctx](std::unique_ptr<request> req) {
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return acquire_cl_metric<uint64_t>(ctx, std::bind(&db::commitlog::get_total_size, std::placeholders::_1));
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});
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}
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}
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