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scylladb/api/storage_proxy.cc
Amnon Heiman f3b6c5fe2f API: storage_proxy add CAS and View endpoints 
Some nodetool command in 3.0 uses the CAS and View metrics.

CAS is not implemented and we don't have all the metrics for View
but we still don't want those nodetool commands to fail.

After this patch the following would work and will return empty:

curl -X GET --header 'Accept: application/json' 'http://localhost:10000/storage_proxy/metrics/cas_read/moving_average_histogram'

curl -X GET --header 'Accept: application/json' 'http://localhost:10000/storage_proxy/metrics/view_write/moving_average_histogram'

curl -X GET --header 'Accept: application/json' 'http://localhost:10000/storage_proxy/metrics/cas_write/moving_average_histogram'

This patch is needed for #4416

Signed-off-by: Amnon Heiman <amnon@scylladb.com>
Message-Id: <20190521141235.20856-1-amnon@scylladb.com>
2019-05-22 14:25:17 +03:00

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/*
* Copyright (C) 2015 ScyllaDB
*/
/*
* This file is part of Scylla.
*
* Scylla is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Scylla is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
*/
#include "storage_proxy.hh"
#include "service/storage_proxy.hh"
#include "api/api-doc/storage_proxy.json.hh"
#include "api/api-doc/utils.json.hh"
#include "service/storage_service.hh"
#include "db/config.hh"
#include "utils/histogram.hh"
#include "database.hh"
namespace api {
namespace sp = httpd::storage_proxy_json;
using proxy = service::storage_proxy;
using namespace json;
static future<utils::rate_moving_average> sum_timed_rate(distributed<proxy>& d, utils::timed_rate_moving_average proxy::stats::*f) {
return d.map_reduce0([f](const proxy& p) {return (p.get_stats().*f).rate();}, utils::rate_moving_average(),
std::plus<utils::rate_moving_average>());
}
static future<json::json_return_type> sum_timed_rate_as_obj(distributed<proxy>& d, utils::timed_rate_moving_average proxy::stats::*f) {
return sum_timed_rate(d, f).then([](const utils::rate_moving_average& val) {
httpd::utils_json::rate_moving_average m;
m = val;
return make_ready_future<json::json_return_type>(m);
});
}
httpd::utils_json::rate_moving_average_and_histogram get_empty_moving_average() {
return timer_to_json(utils::rate_moving_average_and_histogram());
}
static future<json::json_return_type> sum_timed_rate_as_long(distributed<proxy>& d, utils::timed_rate_moving_average proxy::stats::*f) {
return sum_timed_rate(d, f).then([](const utils::rate_moving_average& val) {
return make_ready_future<json::json_return_type>(val.count);
});
}
static future<json::json_return_type> sum_estimated_histogram(http_context& ctx, utils::estimated_histogram proxy::stats::*f) {
return ctx.sp.map_reduce0([f](const proxy& p) {return p.get_stats().*f;}, utils::estimated_histogram(),
utils::estimated_histogram_merge).then([](const utils::estimated_histogram& val) {
utils_json::estimated_histogram res;
res = val;
return make_ready_future<json::json_return_type>(res);
});
}
static future<json::json_return_type> total_latency(http_context& ctx, utils::timed_rate_moving_average_and_histogram proxy::stats::*f) {
return ctx.sp.map_reduce0([f](const proxy& p) {return (p.get_stats().*f).hist.mean * (p.get_stats().*f).hist.count;}, 0.0,
std::plus<double>()).then([](double val) {
int64_t res = val;
return make_ready_future<json::json_return_type>(res);
});
}
void set_storage_proxy(http_context& ctx, routes& r) {
sp::get_total_hints.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(0);
});
sp::get_hinted_handoff_enabled.set(r, [](std::unique_ptr<request> req) {
//TBD
// FIXME
// hinted handoff is not supported currently,
// so we should return false
return make_ready_future<json::json_return_type>(false);
});
sp::set_hinted_handoff_enabled.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("enable");
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_hinted_handoff_enabled_by_dc.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
std::vector<sp::mapper_list> res;
return make_ready_future<json::json_return_type>(res);
});
sp::set_hinted_handoff_enabled_by_dc_list.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("dcs");
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_max_hint_window.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(0);
});
sp::set_max_hint_window.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("ms");
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_max_hints_in_progress.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(1);
});
sp::set_max_hints_in_progress.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("qs");
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_hints_in_progress.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(0);
});
sp::get_rpc_timeout.set(r, [&ctx](const_req req) {
return ctx.db.local().get_config().request_timeout_in_ms()/1000.0;
});
sp::set_rpc_timeout.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("timeout");
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_read_rpc_timeout.set(r, [&ctx](const_req req) {
return ctx.db.local().get_config().read_request_timeout_in_ms()/1000.0;
});
sp::set_read_rpc_timeout.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("timeout");
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_write_rpc_timeout.set(r, [&ctx](const_req req) {
return ctx.db.local().get_config().write_request_timeout_in_ms()/1000.0;
});
sp::set_write_rpc_timeout.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("timeout");
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_counter_write_rpc_timeout.set(r, [&ctx](const_req req) {
return ctx.db.local().get_config().counter_write_request_timeout_in_ms()/1000.0;
});
sp::set_counter_write_rpc_timeout.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("timeout");
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_cas_contention_timeout.set(r, [&ctx](const_req req) {
return ctx.db.local().get_config().cas_contention_timeout_in_ms()/1000.0;
});
sp::set_cas_contention_timeout.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("timeout");
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_range_rpc_timeout.set(r, [&ctx](const_req req) {
return ctx.db.local().get_config().range_request_timeout_in_ms()/1000.0;
});
sp::set_range_rpc_timeout.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("timeout");
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_truncate_rpc_timeout.set(r, [&ctx](const_req req) {
return ctx.db.local().get_config().truncate_request_timeout_in_ms()/1000.0;
});
sp::set_truncate_rpc_timeout.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
auto enable = req->get_query_param("timeout");
return make_ready_future<json::json_return_type>(json_void());
});
sp::reload_trigger_classes.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(json_void());
});
sp::get_read_repair_attempted.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_stats(ctx.sp, &proxy::stats::read_repair_attempts);
});
sp::get_read_repair_repaired_blocking.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_stats(ctx.sp, &proxy::stats::read_repair_repaired_blocking);
});
sp::get_read_repair_repaired_background.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_stats(ctx.sp, &proxy::stats::read_repair_repaired_background);
});
sp::get_schema_versions.set(r, [](std::unique_ptr<request> req) {
return service::get_local_storage_service().describe_schema_versions().then([] (auto result) {
std::vector<sp::mapper_list> res;
for (auto e : result) {
sp::mapper_list entry;
entry.key = std::move(e.first);
entry.value = std::move(e.second);
res.emplace_back(std::move(entry));
}
return make_ready_future<json::json_return_type>(std::move(res));
});
});
sp::get_cas_read_timeouts.set(r, [](std::unique_ptr<request> req) {
//TBD
// FIXME
// cas is not supported yet, so just return 0
return make_ready_future<json::json_return_type>(0);
});
sp::get_cas_read_unavailables.set(r, [](std::unique_ptr<request> req) {
//TBD
// FIXME
// cas is not supported yet, so just return 0
return make_ready_future<json::json_return_type>(0);
});
sp::get_cas_write_timeouts.set(r, [](std::unique_ptr<request> req) {
//TBD
// FIXME
// cas is not supported yet, so just return 0
return make_ready_future<json::json_return_type>(0);
});
sp::get_cas_write_unavailables.set(r, [](std::unique_ptr<request> req) {
//TBD
// FIXME
// cas is not supported yet, so just return 0
return make_ready_future<json::json_return_type>(0);
});
sp::get_cas_write_metrics_unfinished_commit.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(0);
});
sp::get_cas_write_metrics_contention.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(0);
});
sp::get_cas_write_metrics_condition_not_met.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(0);
});
sp::get_cas_read_metrics_unfinished_commit.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(0);
});
sp::get_cas_read_metrics_contention.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(0);
});
sp::get_cas_read_metrics_condition_not_met.set(r, [](std::unique_ptr<request> req) {
//TBD
unimplemented();
return make_ready_future<json::json_return_type>(0);
});
sp::get_read_metrics_timeouts.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_long(ctx.sp, &proxy::stats::read_timeouts);
});
sp::get_read_metrics_unavailables.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_long(ctx.sp, &proxy::stats::read_unavailables);
});
sp::get_range_metrics_timeouts.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_long(ctx.sp, &proxy::stats::range_slice_timeouts);
});
sp::get_range_metrics_unavailables.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_long(ctx.sp, &proxy::stats::range_slice_unavailables);
});
sp::get_write_metrics_timeouts.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_long(ctx.sp, &proxy::stats::write_timeouts);
});
sp::get_write_metrics_unavailables.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_long(ctx.sp, &proxy::stats::write_unavailables);
});
sp::get_read_metrics_timeouts_rates.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::read_timeouts);
});
sp::get_read_metrics_unavailables_rates.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::read_unavailables);
});
sp::get_range_metrics_timeouts_rates.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::range_slice_timeouts);
});
sp::get_range_metrics_unavailables_rates.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::range_slice_unavailables);
});
sp::get_write_metrics_timeouts_rates.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::write_timeouts);
});
sp::get_write_metrics_unavailables_rates.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timed_rate_as_obj(ctx.sp, &proxy::stats::write_unavailables);
});
sp::get_range_metrics_latency_histogram_depricated.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_histogram_stats(ctx.sp, &proxy::stats::range);
});
sp::get_write_metrics_latency_histogram_depricated.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_histogram_stats(ctx.sp, &proxy::stats::write);
});
sp::get_read_metrics_latency_histogram_depricated.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_histogram_stats(ctx.sp, &proxy::stats::read);
});
sp::get_range_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timer_stats(ctx.sp, &proxy::stats::range);
});
sp::get_write_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timer_stats(ctx.sp, &proxy::stats::write);
});
sp::get_cas_write_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
//TBD
// FIXME
// cas is not supported yet, so just return empty moving average
return make_ready_future<json::json_return_type>(get_empty_moving_average());
});
sp::get_cas_read_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
//TBD
// FIXME
// cas is not supported yet, so just return empty moving average
return make_ready_future<json::json_return_type>(get_empty_moving_average());
});
sp::get_view_write_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
//TBD
// FIXME
// No View metrics are available, so just return empty moving average
return make_ready_future<json::json_return_type>(get_empty_moving_average());
});
sp::get_read_metrics_latency_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timer_stats(ctx.sp, &proxy::stats::read);
});
sp::get_read_estimated_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_estimated_histogram(ctx, &proxy::stats::estimated_read);
});
sp::get_read_latency.set(r, [&ctx](std::unique_ptr<request> req) {
return total_latency(ctx, &proxy::stats::read);
});
sp::get_write_estimated_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_estimated_histogram(ctx, &proxy::stats::estimated_write);
});
sp::get_write_latency.set(r, [&ctx](std::unique_ptr<request> req) {
return total_latency(ctx, &proxy::stats::write);
});
sp::get_range_estimated_histogram.set(r, [&ctx](std::unique_ptr<request> req) {
return sum_timer_stats(ctx.sp, &proxy::stats::range);
});
sp::get_range_latency.set(r, [&ctx](std::unique_ptr<request> req) {
return total_latency(ctx, &proxy::stats::range);
});
}
}
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