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104 lines
2.9 KiB
C++
104 lines
2.9 KiB
C++
#include <Common/TLDListsHolder.h>
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#include <Common/StringUtils/StringUtils.h>
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#include <Common/logger_useful.h>
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#include <IO/ReadBufferFromFile.h>
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#include <IO/ReadHelpers.h>
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#include <string_view>
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#include <unordered_set>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int TLD_LIST_NOT_FOUND;
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extern const int LOGICAL_ERROR;
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}
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/// TLDList
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TLDList::TLDList(size_t size)
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: tld_container(size)
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, pool(std::make_unique<Arena>(10 << 20))
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{}
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bool TLDList::insert(const StringRef & host)
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{
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bool inserted;
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tld_container.emplace(DB::ArenaKeyHolder{host, *pool}, inserted);
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return inserted;
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}
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bool TLDList::has(const StringRef & host) const
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{
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return tld_container.has(host);
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}
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/// TLDListsHolder
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TLDListsHolder & TLDListsHolder::getInstance()
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{
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static TLDListsHolder instance;
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return instance;
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}
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TLDListsHolder::TLDListsHolder() = default;
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void TLDListsHolder::parseConfig(const std::string & top_level_domains_path, const Poco::Util::AbstractConfiguration & config)
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{
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Poco::Util::AbstractConfiguration::Keys config_keys;
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config.keys("top_level_domains_lists", config_keys);
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Poco::Logger * log = &Poco::Logger::get("TLDListsHolder");
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for (const auto & key : config_keys)
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{
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const std::string & path = top_level_domains_path + config.getString("top_level_domains_lists." + key);
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LOG_TRACE(log, "{} loading from {}", key, path);
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size_t hosts = parseAndAddTldList(key, path);
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LOG_INFO(log, "{} was added ({} hosts)", key, hosts);
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}
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}
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size_t TLDListsHolder::parseAndAddTldList(const std::string & name, const std::string & path)
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{
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std::unordered_set<std::string> tld_list_tmp;
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ReadBufferFromFile in(path);
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String line;
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while (!in.eof())
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{
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readEscapedStringUntilEOL(line, in);
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if (!in.eof())
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++in.position();
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/// Skip comments
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if (line.size() > 2 && line[0] == '/' && line[1] == '/')
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continue;
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line = trim(line, [](char c) { return std::isspace(c); });
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/// Skip empty line
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if (line.empty())
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continue;
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tld_list_tmp.emplace(line);
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}
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if (!in.eof())
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throw Exception(ErrorCodes::LOGICAL_ERROR, "Not all list had been read", name);
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TLDList tld_list(tld_list_tmp.size());
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for (const auto & host : tld_list_tmp)
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{
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StringRef host_ref{host.data(), host.size()};
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tld_list.insert(host_ref);
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}
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size_t tld_list_size = tld_list.size();
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std::lock_guard<std::mutex> lock(tld_lists_map_mutex);
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tld_lists_map.insert(std::make_pair(name, std::move(tld_list)));
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return tld_list_size;
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}
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const TLDList & TLDListsHolder::getTldList(const std::string & name)
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{
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std::lock_guard<std::mutex> lock(tld_lists_map_mutex);
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auto it = tld_lists_map.find(name);
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if (it == tld_lists_map.end())
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throw Exception(ErrorCodes::TLD_LIST_NOT_FOUND, "TLD list {} does not exist", name);
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return it->second;
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}
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}
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