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// vim: ts=8 sw=2 smarttab ft=cpp
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2022 Red Hat, Inc.
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include <system_error>
#include "include/buffer.h"
#include "common/errno.h"
#include "common/ceph_json.h"
#include "rgw_zone.h"
#include "driver/immutable_config/store.h"
#include "store.h"
namespace rgw::sal {
namespace {
struct DecodedConfig {
RGWZoneGroup zonegroup;
RGWZoneParams zone;
RGWPeriodConfig period_config;
void decode_json(JSONObj *obj)
{
JSONDecoder::decode_json("zonegroup", zonegroup, obj);
JSONDecoder::decode_json("zone", zone, obj);
JSONDecoder::decode_json("period_config", period_config, obj);
}
};
static void parse_config(const DoutPrefixProvider* dpp, const char* filename)
{
bufferlist bl;
std::string errmsg;
int r = bl.read_file(filename, &errmsg);
if (r < 0) {
ldpp_dout(dpp, 0) << "failed to read json config file '" << filename
<< "': " << errmsg << dendl;
throw std::system_error(-r, std::system_category());
}
JSONParser p;
if (!p.parse(bl.c_str(), bl.length())) {
ldpp_dout(dpp, 0) << "failed to parse json config file" << dendl;
throw std::system_error(make_error_code(std::errc::invalid_argument));
}
DecodedConfig config;
try {
decode_json_obj(config, &p);
} catch (const JSONDecoder::err& e) {
ldpp_dout(dpp, 0) << "failed to decode JSON input: " << e.what() << dendl;
throw std::system_error(make_error_code(std::errc::invalid_argument));
}
}
void sanity_check_config(const DoutPrefixProvider* dpp, DecodedConfig& config)
{
if (config.zonegroup.id.empty()) {
config.zonegroup.id = "default";
}
if (config.zonegroup.name.empty()) {
config.zonegroup.name = "default";
}
if (config.zonegroup.api_name.empty()) {
config.zonegroup.api_name = config.zonegroup.name;
}
if (config.zone.id.empty()) {
config.zone.id = "default";
}
if (config.zone.name.empty()) {
config.zone.name = "default";
}
// add default placement if it doesn't exist
rgw_pool pool;
RGWZonePlacementInfo placement;
placement.storage_classes.set_storage_class(
RGW_STORAGE_CLASS_STANDARD, &pool, nullptr);
config.zone.placement_pools.emplace("default-placement",
std::move(placement));
std::set<rgw_pool> pools;
int r = rgw::init_zone_pool_names(dpp, null_yield, pools, config.zone);
if (r < 0) {
ldpp_dout(dpp, 0) << "failed to set default zone pool names" << dendl;
throw std::system_error(-r, std::system_category());
}
// verify that config.zonegroup only contains config.zone
if (config.zonegroup.zones.size() > 1) {
ldpp_dout(dpp, 0) << "zonegroup cannot contain multiple zones" << dendl;
throw std::system_error(make_error_code(std::errc::invalid_argument));
}
if (config.zonegroup.zones.size() == 1) {
auto z = config.zonegroup.zones.begin();
if (z->first != config.zone.id) {
ldpp_dout(dpp, 0) << "zonegroup contains unknown zone id="
<< z->first << dendl;
throw std::system_error(make_error_code(std::errc::invalid_argument));
}
if (z->second.id != config.zone.id) {
ldpp_dout(dpp, 0) << "zonegroup contains unknown zone id="
<< z->second.id << dendl;
throw std::system_error(make_error_code(std::errc::invalid_argument));
}
if (z->second.name != config.zone.name) {
ldpp_dout(dpp, 0) << "zonegroup contains unknown zone name="
<< z->second.name << dendl;
throw std::system_error(make_error_code(std::errc::invalid_argument));
}
if (config.zonegroup.master_zone != config.zone.id) {
ldpp_dout(dpp, 0) << "zonegroup contains unknown master_zone="
<< config.zonegroup.master_zone << dendl;
throw std::system_error(make_error_code(std::errc::invalid_argument));
}
} else {
// add the zone to the group
const bool is_master = true;
const bool read_only = false;
std::list<std::string> endpoints;
std::list<std::string> sync_from;
std::list<std::string> sync_from_rm;
rgw::zone_features::set enable_features;
rgw::zone_features::set disable_features;
enable_features.insert(rgw::zone_features::supported.begin(),
rgw::zone_features::supported.end());
int r = rgw::add_zone_to_group(dpp, config.zonegroup, config.zone,
&is_master, &read_only, endpoints,
nullptr, nullptr, sync_from, sync_from_rm,
nullptr, std::nullopt,
enable_features, disable_features);
if (r < 0) {
ldpp_dout(dpp, 0) << "failed to add zone to zonegroup: "
<< cpp_strerror(r) << dendl;
throw std::system_error(-r, std::system_category());
}
config.zonegroup.enabled_features.insert(rgw::zone_features::enabled.begin(),
rgw::zone_features::enabled.end());
}
// insert the default placement target if it doesn't exist
auto target = RGWZoneGroupPlacementTarget{.name = "default-placement"};
config.zonegroup.placement_targets.emplace(target.name, target);
if (config.zonegroup.default_placement.name.empty()) {
config.zonegroup.default_placement.name = target.name;
}
}
} // anonymous namespace
auto create_json_config_store(const DoutPrefixProvider* dpp,
const std::string& filename)
-> std::unique_ptr<ConfigStore>
{
DecodedConfig config;
parse_config(dpp, filename.c_str());
sanity_check_config(dpp, config);
return create_immutable_config_store(dpp, config.zonegroup, config.zone,
config.period_config);
}
} // namespace rgw::sal
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