1aacfdf460
The API req->param["name"] to access parameters in the path part of the URL was buggy - it forgot to do URL decoding and the result of our use of it in Scylla was bugs like #5883 - where special characters in certain REST API requests got botched up (encoded by the client, then not decoded by the server). The solution is to replace all uses of req->param["name"] by the new req->get_path_param("name"), which does the decoding correctly. Unfortunately we needed to change 104 (!) callers in this patch, but the transformation is mostly mechanical and there is no functional changes in this patch. Another set of changes was to bring req, not req->param, to a few functions that want to get the path param. This patch avoids the numerous deprecation warnings we had before, and more importantly, it fixes #5883. Signed-off-by: Nadav Har'El <nyh@scylladb.com>
188 lines
7.7 KiB
C++
188 lines
7.7 KiB
C++
/*
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* Copyright (C) 2015-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#include "api/api_init.hh"
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#include "api/api-doc/system.json.hh"
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#include "api/api-doc/metrics.json.hh"
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#include "replica/database.hh"
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#include <rapidjson/document.h>
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#include <seastar/core/reactor.hh>
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#include <seastar/core/metrics_api.hh>
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#include <seastar/core/relabel_config.hh>
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#include <seastar/http/exception.hh>
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#include <seastar/util/short_streams.hh>
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#include <seastar/http/short_streams.hh>
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#include "log.hh"
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extern logging::logger apilog;
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namespace api {
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using namespace seastar::httpd;
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namespace hs = httpd::system_json;
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namespace hm = httpd::metrics_json;
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extern "C" void __attribute__((weak)) __llvm_profile_dump();
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extern "C" const char * __attribute__((weak)) __llvm_profile_get_filename();
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extern "C" void __attribute__((weak)) __llvm_profile_reset_counters();
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void set_system(http_context& ctx, routes& r) {
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hm::get_metrics_config.set(r, [](const_req req) {
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std::vector<hm::metrics_config> res;
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res.resize(seastar::metrics::get_relabel_configs().size());
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size_t i = 0;
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for (auto&& r : seastar::metrics::get_relabel_configs()) {
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res[i].action = r.action;
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res[i].target_label = r.target_label;
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res[i].replacement = r.replacement;
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res[i].separator = r.separator;
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res[i].source_labels = r.source_labels;
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res[i].regex = r.expr.str();
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i++;
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}
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return res;
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});
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hm::set_metrics_config.set(r, [](std::unique_ptr<http::request> req) -> future<json::json_return_type> {
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rapidjson::Document doc;
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doc.Parse(req->content.c_str());
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if (!doc.IsArray()) {
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throw bad_param_exception("Expected a json array");
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}
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std::vector<seastar::metrics::relabel_config> relabels;
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relabels.resize(doc.Size());
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for (rapidjson::SizeType i = 0; i < doc.Size(); i++) {
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const auto& element = doc[i];
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if (element.HasMember("source_labels")) {
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std::vector<std::string> source_labels;
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source_labels.resize(element["source_labels"].Size());
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for (size_t j = 0; j < element["source_labels"].Size(); j++) {
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source_labels[j] = element["source_labels"][j].GetString();
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}
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relabels[i].source_labels = source_labels;
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}
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if (element.HasMember("action")) {
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relabels[i].action = seastar::metrics::relabel_config_action(element["action"].GetString());
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}
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if (element.HasMember("replacement")) {
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relabels[i].replacement = element["replacement"].GetString();
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}
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if (element.HasMember("separator")) {
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relabels[i].separator = element["separator"].GetString();
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}
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if (element.HasMember("target_label")) {
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relabels[i].target_label = element["target_label"].GetString();
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}
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if (element.HasMember("regex")) {
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relabels[i].expr = element["regex"].GetString();
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}
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}
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return do_with(std::move(relabels), false, [](const std::vector<seastar::metrics::relabel_config>& relabels, bool& failed) {
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return smp::invoke_on_all([&relabels, &failed] {
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return metrics::set_relabel_configs(relabels).then([&failed](const metrics::metric_relabeling_result& result) {
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if (result.metrics_relabeled_due_to_collision > 0) {
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failed = true;
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}
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return;
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});
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}).then([&failed](){
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if (failed) {
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throw bad_param_exception("conflicts found during relabeling");
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}
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return make_ready_future<json::json_return_type>(seastar::json::json_void());
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});
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});
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});
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hs::get_system_uptime.set(r, [](const_req req) {
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return std::chrono::duration_cast<std::chrono::milliseconds>(engine().uptime()).count();
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});
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hs::get_all_logger_names.set(r, [](const_req req) {
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return logging::logger_registry().get_all_logger_names();
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});
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hs::set_all_logger_level.set(r, [](const_req req) {
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try {
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logging::log_level level = boost::lexical_cast<logging::log_level>(std::string(req.get_query_param("level")));
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logging::logger_registry().set_all_loggers_level(level);
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} catch (boost::bad_lexical_cast& e) {
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throw bad_param_exception("Unknown logging level " + req.get_query_param("level"));
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}
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return json::json_void();
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});
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hs::get_logger_level.set(r, [](const_req req) {
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try {
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return logging::level_name(logging::logger_registry().get_logger_level(req.get_path_param("name")));
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} catch (std::out_of_range& e) {
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throw bad_param_exception("Unknown logger name " + req.get_path_param("name"));
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}
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// just to keep the compiler happy
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return sstring();
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});
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hs::set_logger_level.set(r, [](const_req req) {
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try {
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logging::log_level level = boost::lexical_cast<logging::log_level>(std::string(req.get_query_param("level")));
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logging::logger_registry().set_logger_level(req.get_path_param("name"), level);
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} catch (std::out_of_range& e) {
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throw bad_param_exception("Unknown logger name " + req.get_path_param("name"));
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} catch (boost::bad_lexical_cast& e) {
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throw bad_param_exception("Unknown logging level " + req.get_query_param("level"));
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}
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return json::json_void();
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});
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hs::write_log_message.set(r, [](const_req req) {
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try {
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logging::log_level level = boost::lexical_cast<logging::log_level>(std::string(req.get_query_param("level")));
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apilog.log(level, "/system/log: {}", std::string(req.get_query_param("message")));
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} catch (boost::bad_lexical_cast& e) {
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throw bad_param_exception("Unknown logging level " + req.get_query_param("level"));
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}
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return json::json_void();
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});
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hs::drop_sstable_caches.set(r, [&ctx](std::unique_ptr<request> req) {
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apilog.info("Dropping sstable caches");
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return ctx.db.invoke_on_all([] (replica::database& db) {
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return db.drop_caches();
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}).then([] {
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apilog.info("Caches dropped");
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return json::json_return_type(json::json_void());
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});
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});
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hs::dump_profile.set(r, [](std::unique_ptr<request> req) {
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if (!__llvm_profile_dump) {
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apilog.info("Profile will not be dumped, executable is not instrumented with profile dumping.");
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return make_ready_future<json::json_return_type>(json::json_return_type(json::json_void()));
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}
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sstring profile_dest(__llvm_profile_get_filename ? __llvm_profile_get_filename() : "disk");
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apilog.info("Dumping profile to {}", profile_dest);
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__llvm_profile_dump();
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if (__llvm_profile_reset_counters) {
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// If counters are not reset the profile dumping mechanism will issue a warning and exit
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// next time it is attempted. If the counters are reset, profiles can be accumulated
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// (if %m is present in LLVM_PROFILE_FILE pattern) so it can be dumped in stages or
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// multiple times during runtime.
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__llvm_profile_reset_counters();
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} else {
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apilog.warn("Could not reset profile counters, profile dumping will be skipped next time it is attempted");
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}
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apilog.info("Profile dumped to {}", profile_dest);
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return make_ready_future<json::json_return_type>(json::json_return_type(json::json_void()));
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}) ;
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}
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}
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