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system.cc
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system.cc
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/*
* Copyright (C) 2015-present ScyllaDB
*/
/*
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#include "api/api-doc/system.json.hh"
#include "api/api-doc/metrics.json.hh"
#include "api/api.hh"
#include <seastar/core/reactor.hh>
#include <seastar/core/metrics_api.hh>
#include <seastar/core/relabel_config.hh>
#include <seastar/http/exception.hh>
#include <seastar/util/short_streams.hh>
#include <seastar/http/short_streams.hh>
#include "utils/rjson.hh"
#include "log.hh"
#include "replica/database.hh"
extern logging::logger apilog;
namespace api {
using namespace seastar::httpd;
namespace hs = httpd::system_json;
namespace hm = httpd::metrics_json;
void set_system(http_context& ctx, routes& r) {
hm::get_metrics_config.set(r, [](const_req req) {
std::vector<hm::metrics_config> res;
res.resize(seastar::metrics::get_relabel_configs().size());
size_t i = 0;
for (auto&& r : seastar::metrics::get_relabel_configs()) {
res[i].action = r.action;
res[i].target_label = r.target_label;
res[i].replacement = r.replacement;
res[i].separator = r.separator;
res[i].source_labels = r.source_labels;
res[i].regex = r.expr.str();
i++;
}
return res;
});
hm::set_metrics_config.set(r, [](std::unique_ptr<http::request> req) -> future<json::json_return_type> {
rapidjson::Document doc;
doc.Parse(req->content.c_str());
if (!doc.IsArray()) {
throw bad_param_exception("Expected a json array");
}
std::vector<seastar::metrics::relabel_config> relabels;
relabels.resize(doc.Size());
for (rapidjson::SizeType i = 0; i < doc.Size(); i++) {
const auto& element = doc[i];
if (element.HasMember("source_labels")) {
std::vector<std::string> source_labels;
source_labels.resize(element["source_labels"].Size());
for (size_t j = 0; j < element["source_labels"].Size(); j++) {
source_labels[j] = element["source_labels"][j].GetString();
}
relabels[i].source_labels = source_labels;
}
if (element.HasMember("action")) {
relabels[i].action = seastar::metrics::relabel_config_action(element["action"].GetString());
}
if (element.HasMember("replacement")) {
relabels[i].replacement = element["replacement"].GetString();
}
if (element.HasMember("separator")) {
relabels[i].separator = element["separator"].GetString();
}
if (element.HasMember("target_label")) {
relabels[i].target_label = element["target_label"].GetString();
}
if (element.HasMember("regex")) {
relabels[i].expr = element["regex"].GetString();
}
}
return do_with(std::move(relabels), false, [](const std::vector<seastar::metrics::relabel_config>& relabels, bool& failed) {
return smp::invoke_on_all([&relabels, &failed] {
return metrics::set_relabel_configs(relabels).then([&failed](const metrics::metric_relabeling_result& result) {
if (result.metrics_relabeled_due_to_collision > 0) {
failed = true;
}
return;
});
}).then([&failed](){
if (failed) {
throw bad_param_exception("conflicts found during relabeling");
}
return make_ready_future<json::json_return_type>(seastar::json::json_void());
});
});
});
hs::get_system_uptime.set(r, [](const_req req) {
return std::chrono::duration_cast<std::chrono::milliseconds>(engine().uptime()).count();
});
hs::get_all_logger_names.set(r, [](const_req req) {
return logging::logger_registry().get_all_logger_names();
});
hs::set_all_logger_level.set(r, [](const_req req) {
try {
logging::log_level level = boost::lexical_cast<logging::log_level>(std::string(req.get_query_param("level")));
logging::logger_registry().set_all_loggers_level(level);
} catch (boost::bad_lexical_cast& e) {
throw bad_param_exception("Unknown logging level " + req.get_query_param("level"));
}
return json::json_void();
});
hs::get_logger_level.set(r, [](const_req req) {
try {
return logging::level_name(logging::logger_registry().get_logger_level(req.param["name"]));
} catch (std::out_of_range& e) {
throw bad_param_exception("Unknown logger name " + req.param["name"]);
}
// just to keep the compiler happy
return sstring();
});
hs::set_logger_level.set(r, [](const_req req) {
try {
logging::log_level level = boost::lexical_cast<logging::log_level>(std::string(req.get_query_param("level")));
logging::logger_registry().set_logger_level(req.param["name"], level);
} catch (std::out_of_range& e) {
throw bad_param_exception("Unknown logger name " + req.param["name"]);
} catch (boost::bad_lexical_cast& e) {
throw bad_param_exception("Unknown logging level " + req.get_query_param("level"));
}
return json::json_void();
});
hs::write_log_message.set(r, [](const_req req) {
try {
logging::log_level level = boost::lexical_cast<logging::log_level>(std::string(req.get_query_param("level")));
apilog.log(level, "/system/log: {}", std::string(req.get_query_param("message")));
} catch (boost::bad_lexical_cast& e) {
throw bad_param_exception("Unknown logging level " + req.get_query_param("level"));
}
return json::json_void();
});
hs::drop_sstable_caches.set(r, [&ctx](std::unique_ptr<request> req) {
apilog.info("Dropping sstable caches");
return ctx.db.invoke_on_all([] (replica::database& db) {
return db.drop_caches();
}).then([] {
apilog.info("Caches dropped");
return json::json_return_type(json::json_void());
});
});
}
}