mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-29 21:20:49 +00:00
2163 lines
67 KiB
C++
2163 lines
67 KiB
C++
#include <map>
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#include <set>
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#include <optional>
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#include <memory>
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#include <Poco/Mutex.h>
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#include <Poco/UUID.h>
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#include <Poco/Net/IPAddress.h>
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#include <Poco/Util/Application.h>
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#include <Common/Macros.h>
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#include <Common/escapeForFileName.h>
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#include <Common/setThreadName.h>
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#include <Common/Stopwatch.h>
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#include <Common/formatReadable.h>
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#include <Common/thread_local_rng.h>
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#include <Compression/ICompressionCodec.h>
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#include <Core/BackgroundSchedulePool.h>
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#include <Formats/FormatFactory.h>
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#include <Databases/IDatabase.h>
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#include <Storages/IStorage.h>
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#include <Storages/MarkCache.h>
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#include <Storages/MergeTree/BackgroundProcessingPool.h>
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#include <Storages/MergeTree/MergeList.h>
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#include <Storages/MergeTree/MergeTreeSettings.h>
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#include <Storages/CompressionCodecSelector.h>
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#include <Disks/DiskLocal.h>
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#include <TableFunctions/TableFunctionFactory.h>
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#include <Interpreters/ActionLocksManager.h>
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#include <Core/Settings.h>
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#include <Access/AccessControlManager.h>
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#include <Access/ContextAccess.h>
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#include <Access/EnabledRowPolicies.h>
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#include <Access/User.h>
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#include <Access/SettingsProfile.h>
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#include <Access/SettingsConstraints.h>
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#include <Interpreters/ExpressionJIT.h>
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#include <Dictionaries/Embedded/GeoDictionariesLoader.h>
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#include <Interpreters/EmbeddedDictionaries.h>
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#include <Interpreters/ExternalDictionariesLoader.h>
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#include <Interpreters/ExternalModelsLoader.h>
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#include <Interpreters/ExpressionActions.h>
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#include <Interpreters/ProcessList.h>
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#include <Interpreters/Cluster.h>
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#include <Interpreters/InterserverIOHandler.h>
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#include <Interpreters/SystemLog.h>
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#include <Interpreters/Context.h>
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#include <Interpreters/DDLWorker.h>
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#include <Common/DNSResolver.h>
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#include <IO/ReadBufferFromFile.h>
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#include <IO/UncompressedCache.h>
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#include <Parsers/ASTCreateQuery.h>
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#include <Parsers/ParserCreateQuery.h>
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#include <Parsers/parseQuery.h>
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#include <Common/StackTrace.h>
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#include <Common/Config/ConfigProcessor.h>
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#include <Common/ZooKeeper/ZooKeeper.h>
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#include <Common/ShellCommand.h>
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#include <Common/TraceCollector.h>
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#include <common/logger_useful.h>
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#include <Common/RemoteHostFilter.h>
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#include <Interpreters/DatabaseCatalog.h>
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namespace ProfileEvents
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{
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extern const Event ContextLock;
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extern const Event CompiledCacheSizeBytes;
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}
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namespace CurrentMetrics
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{
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extern const Metric ContextLockWait;
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extern const Metric MemoryTrackingForMerges;
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extern const Metric BackgroundMovePoolTask;
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extern const Metric MemoryTrackingInBackgroundMoveProcessingPool;
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}
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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 BAD_ARGUMENTS;
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extern const int BAD_GET;
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extern const int UNKNOWN_DATABASE;
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extern const int UNKNOWN_TABLE;
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extern const int TABLE_ALREADY_EXISTS;
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extern const int THERE_IS_NO_SESSION;
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extern const int THERE_IS_NO_QUERY;
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extern const int NO_ELEMENTS_IN_CONFIG;
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extern const int TABLE_SIZE_EXCEEDS_MAX_DROP_SIZE_LIMIT;
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extern const int SESSION_NOT_FOUND;
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extern const int SESSION_IS_LOCKED;
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extern const int LOGICAL_ERROR;
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extern const int UNKNOWN_SCALAR;
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extern const int AUTHENTICATION_FAILED;
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extern const int NOT_IMPLEMENTED;
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}
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class NamedSessions
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{
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public:
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using Key = NamedSessionKey;
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~NamedSessions()
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{
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try
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{
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{
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std::lock_guard lock{mutex};
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quit = true;
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}
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cond.notify_one();
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thread.join();
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}
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catch (...)
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{
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tryLogCurrentException(__PRETTY_FUNCTION__);
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}
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}
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/// Find existing session or create a new.
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std::shared_ptr<NamedSession> acquireSession(
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const String & session_id,
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Context & context,
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std::chrono::steady_clock::duration timeout,
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bool throw_if_not_found)
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{
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std::unique_lock lock(mutex);
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auto & user_name = context.client_info.current_user;
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if (user_name.empty())
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throw Exception("Empty user name.", ErrorCodes::LOGICAL_ERROR);
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Key key(user_name, session_id);
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auto it = sessions.find(key);
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if (it == sessions.end())
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{
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if (throw_if_not_found)
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throw Exception("Session not found.", ErrorCodes::SESSION_NOT_FOUND);
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/// Create a new session from current context.
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it = sessions.insert(std::make_pair(key, std::make_shared<NamedSession>(key, context, timeout, *this))).first;
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}
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else if (it->second->key.first != context.client_info.current_user)
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{
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throw Exception("Session belongs to a different user", ErrorCodes::LOGICAL_ERROR);
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}
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/// Use existing session.
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const auto & session = it->second;
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if (!session.unique())
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throw Exception("Session is locked by a concurrent client.", ErrorCodes::SESSION_IS_LOCKED);
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return session;
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}
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void releaseSession(NamedSession & session)
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{
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std::unique_lock lock(mutex);
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scheduleCloseSession(session, lock);
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}
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private:
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class SessionKeyHash
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{
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public:
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size_t operator()(const Key & key) const
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{
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SipHash hash;
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hash.update(key.first);
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hash.update(key.second);
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return hash.get64();
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}
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};
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/// TODO it's very complicated. Make simple std::map with time_t or boost::multi_index.
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using Container = std::unordered_map<Key, std::shared_ptr<NamedSession>, SessionKeyHash>;
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using CloseTimes = std::deque<std::vector<Key>>;
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Container sessions;
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CloseTimes close_times;
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std::chrono::steady_clock::duration close_interval = std::chrono::seconds(1);
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std::chrono::steady_clock::time_point close_cycle_time = std::chrono::steady_clock::now();
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UInt64 close_cycle = 0;
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void scheduleCloseSession(NamedSession & session, std::unique_lock<std::mutex> &)
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{
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/// Push it on a queue of sessions to close, on a position corresponding to the timeout.
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/// (timeout is measured from current moment of time)
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const UInt64 close_index = session.timeout / close_interval + 1;
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const auto new_close_cycle = close_cycle + close_index;
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if (session.close_cycle != new_close_cycle)
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{
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session.close_cycle = new_close_cycle;
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if (close_times.size() < close_index + 1)
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close_times.resize(close_index + 1);
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close_times[close_index].emplace_back(session.key);
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}
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}
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void cleanThread()
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{
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setThreadName("SessionCleaner");
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std::unique_lock lock{mutex};
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while (true)
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{
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auto interval = closeSessions(lock);
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if (cond.wait_for(lock, interval, [this]() -> bool { return quit; }))
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break;
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}
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}
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/// Close sessions, that has been expired. Returns how long to wait for next session to be expired, if no new sessions will be added.
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std::chrono::steady_clock::duration closeSessions(std::unique_lock<std::mutex> & lock)
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{
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const auto now = std::chrono::steady_clock::now();
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/// The time to close the next session did not come
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if (now < close_cycle_time)
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return close_cycle_time - now; /// Will sleep until it comes.
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const auto current_cycle = close_cycle;
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++close_cycle;
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close_cycle_time = now + close_interval;
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if (close_times.empty())
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return close_interval;
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auto & sessions_to_close = close_times.front();
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for (const auto & key : sessions_to_close)
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{
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const auto session = sessions.find(key);
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if (session != sessions.end() && session->second->close_cycle <= current_cycle)
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{
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if (!session->second.unique())
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{
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/// Skip but move it to close on the next cycle.
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session->second->timeout = std::chrono::steady_clock::duration{0};
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scheduleCloseSession(*session->second, lock);
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}
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else
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sessions.erase(session);
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}
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}
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close_times.pop_front();
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return close_interval;
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}
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std::mutex mutex;
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std::condition_variable cond;
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std::atomic<bool> quit{false};
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ThreadFromGlobalPool thread{&NamedSessions::cleanThread, this};
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};
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void NamedSession::release()
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{
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parent.releaseSession(*this);
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}
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/** Set of known objects (environment), that could be used in query.
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* Shared (global) part. Order of members (especially, order of destruction) is very important.
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*/
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struct ContextShared
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{
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Logger * log = &Logger::get("Context");
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/// For access of most of shared objects. Recursive mutex.
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mutable std::recursive_mutex mutex;
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/// Separate mutex for access of dictionaries. Separate mutex to avoid locks when server doing request to itself.
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mutable std::mutex embedded_dictionaries_mutex;
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mutable std::mutex external_dictionaries_mutex;
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mutable std::mutex external_models_mutex;
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/// Separate mutex for re-initialization of zookeeper session. This operation could take a long time and must not interfere with another operations.
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mutable std::mutex zookeeper_mutex;
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mutable zkutil::ZooKeeperPtr zookeeper; /// Client for ZooKeeper.
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String interserver_io_host; /// The host name by which this server is available for other servers.
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UInt16 interserver_io_port = 0; /// and port.
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String interserver_io_user;
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String interserver_io_password;
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String interserver_scheme; /// http or https
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String path; /// Path to the data directory, with a slash at the end.
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String flags_path; /// Path to the directory with some control flags for server maintenance.
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String user_files_path; /// Path to the directory with user provided files, usable by 'file' table function.
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String dictionaries_lib_path; /// Path to the directory with user provided binaries and libraries for external dictionaries.
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ConfigurationPtr config; /// Global configuration settings.
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String tmp_path; /// Path to the temporary files that occur when processing the request.
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mutable VolumePtr tmp_volume; /// Volume for the the temporary files that occur when processing the request.
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mutable std::optional<EmbeddedDictionaries> embedded_dictionaries; /// Metrica's dictionaries. Have lazy initialization.
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mutable std::optional<ExternalDictionariesLoader> external_dictionaries_loader;
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mutable std::optional<ExternalModelsLoader> external_models_loader;
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String default_profile_name; /// Default profile name used for default values.
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String system_profile_name; /// Profile used by system processes
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AccessControlManager access_control_manager;
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mutable UncompressedCachePtr uncompressed_cache; /// The cache of decompressed blocks.
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mutable MarkCachePtr mark_cache; /// Cache of marks in compressed files.
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ProcessList process_list; /// Executing queries at the moment.
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MergeList merge_list; /// The list of executable merge (for (Replicated)?MergeTree)
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ConfigurationPtr users_config; /// Config with the users, profiles and quotas sections.
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InterserverIOHandler interserver_io_handler; /// Handler for interserver communication.
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std::optional<BackgroundSchedulePool> buffer_flush_schedule_pool; /// A thread pool that can do background flush for Buffer tables.
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std::optional<BackgroundProcessingPool> background_pool; /// The thread pool for the background work performed by the tables.
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std::optional<BackgroundProcessingPool> background_move_pool; /// The thread pool for the background moves performed by the tables.
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std::optional<BackgroundSchedulePool> schedule_pool; /// A thread pool that can run different jobs in background (used in replicated tables)
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std::optional<BackgroundSchedulePool> distributed_schedule_pool; /// A thread pool that can run different jobs in background (used for distributed sends)
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MultiVersion<Macros> macros; /// Substitutions extracted from config.
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std::unique_ptr<DDLWorker> ddl_worker; /// Process ddl commands from zk.
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/// Rules for selecting the compression settings, depending on the size of the part.
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mutable std::unique_ptr<CompressionCodecSelector> compression_codec_selector;
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/// Storage disk chooser for MergeTree engines
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mutable std::shared_ptr<const DiskSelector> merge_tree_disk_selector;
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/// Storage policy chooser for MergeTree engines
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mutable std::shared_ptr<const StoragePolicySelector> merge_tree_storage_policy_selector;
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std::optional<MergeTreeSettings> merge_tree_settings; /// Settings of MergeTree* engines.
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std::atomic_size_t max_table_size_to_drop = 50000000000lu; /// Protects MergeTree tables from accidental DROP (50GB by default)
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std::atomic_size_t max_partition_size_to_drop = 50000000000lu; /// Protects MergeTree partitions from accidental DROP (50GB by default)
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String format_schema_path; /// Path to a directory that contains schema files used by input formats.
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ActionLocksManagerPtr action_locks_manager; /// Set of storages' action lockers
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std::optional<SystemLogs> system_logs; /// Used to log queries and operations on parts
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RemoteHostFilter remote_host_filter; /// Allowed URL from config.xml
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std::optional<TraceCollector> trace_collector; /// Thread collecting traces from threads executing queries
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std::optional<NamedSessions> named_sessions; /// Controls named HTTP sessions.
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/// Clusters for distributed tables
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/// Initialized on demand (on distributed storages initialization) since Settings should be initialized
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std::unique_ptr<Clusters> clusters;
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ConfigurationPtr clusters_config; /// Stores updated configs
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mutable std::mutex clusters_mutex; /// Guards clusters and clusters_config
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#if USE_EMBEDDED_COMPILER
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std::shared_ptr<CompiledExpressionCache> compiled_expression_cache;
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#endif
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bool shutdown_called = false;
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Stopwatch uptime_watch;
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Context::ApplicationType application_type = Context::ApplicationType::SERVER;
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/// vector of xdbc-bridge commands, they will be killed when Context will be destroyed
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std::vector<std::unique_ptr<ShellCommand>> bridge_commands;
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Context::ConfigReloadCallback config_reload_callback;
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ContextShared()
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: macros(std::make_unique<Macros>())
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{
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/// TODO: make it singleton (?)
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static std::atomic<size_t> num_calls{0};
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if (++num_calls > 1)
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{
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std::cerr << "Attempting to create multiple ContextShared instances. Stack trace:\n" << StackTrace().toString();
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std::cerr.flush();
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std::terminate();
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}
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}
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~ContextShared()
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{
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try
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{
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shutdown();
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}
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catch (...)
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{
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tryLogCurrentException(__PRETTY_FUNCTION__);
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}
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}
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/** Perform a complex job of destroying objects in advance.
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*/
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void shutdown()
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{
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if (shutdown_called)
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return;
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shutdown_called = true;
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/** After system_logs have been shut down it is guaranteed that no system table gets created or written to.
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* Note that part changes at shutdown won't be logged to part log.
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*/
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if (system_logs)
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system_logs->shutdown();
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DatabaseCatalog::instance().shutdown();
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/// Preemptive destruction is important, because these objects may have a refcount to ContextShared (cyclic reference).
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/// TODO: Get rid of this.
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system_logs.reset();
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embedded_dictionaries.reset();
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external_dictionaries_loader.reset();
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external_models_loader.reset();
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buffer_flush_schedule_pool.reset();
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background_pool.reset();
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background_move_pool.reset();
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schedule_pool.reset();
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distributed_schedule_pool.reset();
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ddl_worker.reset();
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/// Stop trace collector if any
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trace_collector.reset();
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}
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bool hasTraceCollector() const
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{
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return trace_collector.has_value();
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}
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void initializeTraceCollector(std::shared_ptr<TraceLog> trace_log)
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{
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if (hasTraceCollector())
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return;
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trace_collector.emplace(std::move(trace_log));
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}
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};
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Context::Context() = default;
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Context::Context(const Context &) = default;
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Context & Context::operator=(const Context &) = default;
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SharedContextHolder::SharedContextHolder(SharedContextHolder &&) noexcept = default;
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SharedContextHolder & SharedContextHolder::operator=(SharedContextHolder &&) = default;
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SharedContextHolder::SharedContextHolder() = default;
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SharedContextHolder::~SharedContextHolder() = default;
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SharedContextHolder::SharedContextHolder(std::unique_ptr<ContextShared> shared_context)
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: shared(std::move(shared_context)) {}
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void SharedContextHolder::reset() { shared.reset(); }
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Context Context::createGlobal(ContextShared * shared)
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{
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Context res;
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res.shared = shared;
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return res;
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}
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SharedContextHolder Context::createShared()
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{
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return SharedContextHolder(std::make_unique<ContextShared>());
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}
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Context::~Context() = default;
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InterserverIOHandler & Context::getInterserverIOHandler() { return shared->interserver_io_handler; }
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std::unique_lock<std::recursive_mutex> Context::getLock() const
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{
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ProfileEvents::increment(ProfileEvents::ContextLock);
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CurrentMetrics::Increment increment{CurrentMetrics::ContextLockWait};
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return std::unique_lock(shared->mutex);
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}
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ProcessList & Context::getProcessList() { return shared->process_list; }
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const ProcessList & Context::getProcessList() const { return shared->process_list; }
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MergeList & Context::getMergeList() { return shared->merge_list; }
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const MergeList & Context::getMergeList() const { return shared->merge_list; }
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void Context::enableNamedSessions()
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{
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shared->named_sessions.emplace();
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}
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std::shared_ptr<NamedSession> Context::acquireNamedSession(const String & session_id, std::chrono::steady_clock::duration timeout, bool session_check)
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{
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if (!shared->named_sessions)
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throw Exception("Support for named sessions is not enabled", ErrorCodes::NOT_IMPLEMENTED);
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return shared->named_sessions->acquireSession(session_id, *this, timeout, session_check);
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}
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String Context::resolveDatabase(const String & database_name) const
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{
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String res = database_name.empty() ? getCurrentDatabase() : database_name;
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|
if (res.empty())
|
|
throw Exception("Default database is not selected", ErrorCodes::UNKNOWN_DATABASE);
|
|
return res;
|
|
}
|
|
|
|
String Context::getPath() const
|
|
{
|
|
auto lock = getLock();
|
|
return shared->path;
|
|
}
|
|
|
|
String Context::getFlagsPath() const
|
|
{
|
|
auto lock = getLock();
|
|
return shared->flags_path;
|
|
}
|
|
|
|
String Context::getUserFilesPath() const
|
|
{
|
|
auto lock = getLock();
|
|
return shared->user_files_path;
|
|
}
|
|
|
|
String Context::getDictionariesLibPath() const
|
|
{
|
|
auto lock = getLock();
|
|
return shared->dictionaries_lib_path;
|
|
}
|
|
|
|
VolumePtr Context::getTemporaryVolume() const
|
|
{
|
|
auto lock = getLock();
|
|
return shared->tmp_volume;
|
|
}
|
|
|
|
void Context::setPath(const String & path)
|
|
{
|
|
auto lock = getLock();
|
|
|
|
shared->path = path;
|
|
|
|
if (shared->tmp_path.empty() && !shared->tmp_volume)
|
|
shared->tmp_path = shared->path + "tmp/";
|
|
|
|
if (shared->flags_path.empty())
|
|
shared->flags_path = shared->path + "flags/";
|
|
|
|
if (shared->user_files_path.empty())
|
|
shared->user_files_path = shared->path + "user_files/";
|
|
|
|
if (shared->dictionaries_lib_path.empty())
|
|
shared->dictionaries_lib_path = shared->path + "dictionaries_lib/";
|
|
}
|
|
|
|
VolumePtr Context::setTemporaryStorage(const String & path, const String & policy_name)
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (policy_name.empty())
|
|
{
|
|
shared->tmp_path = path;
|
|
if (!shared->tmp_path.ends_with('/'))
|
|
shared->tmp_path += '/';
|
|
|
|
auto disk = std::make_shared<DiskLocal>("_tmp_default", shared->tmp_path, 0);
|
|
shared->tmp_volume = std::make_shared<Volume>("_tmp_default", std::vector<DiskPtr>{disk}, 0);
|
|
}
|
|
else
|
|
{
|
|
StoragePolicyPtr tmp_policy = getStoragePolicySelector()->get(policy_name);
|
|
if (tmp_policy->getVolumes().size() != 1)
|
|
throw Exception("Policy " + policy_name + " is used temporary files, such policy should have exactly one volume", ErrorCodes::NO_ELEMENTS_IN_CONFIG);
|
|
shared->tmp_volume = tmp_policy->getVolume(0);
|
|
}
|
|
|
|
if (shared->tmp_volume->disks.empty())
|
|
throw Exception("No disks volume for temporary files", ErrorCodes::NO_ELEMENTS_IN_CONFIG);
|
|
|
|
return shared->tmp_volume;
|
|
}
|
|
|
|
void Context::setFlagsPath(const String & path)
|
|
{
|
|
auto lock = getLock();
|
|
shared->flags_path = path;
|
|
}
|
|
|
|
void Context::setUserFilesPath(const String & path)
|
|
{
|
|
auto lock = getLock();
|
|
shared->user_files_path = path;
|
|
}
|
|
|
|
void Context::setDictionariesLibPath(const String & path)
|
|
{
|
|
auto lock = getLock();
|
|
shared->dictionaries_lib_path = path;
|
|
}
|
|
|
|
void Context::setConfig(const ConfigurationPtr & config)
|
|
{
|
|
auto lock = getLock();
|
|
shared->config = config;
|
|
}
|
|
|
|
const Poco::Util::AbstractConfiguration & Context::getConfigRef() const
|
|
{
|
|
auto lock = getLock();
|
|
return shared->config ? *shared->config : Poco::Util::Application::instance().config();
|
|
}
|
|
|
|
|
|
AccessControlManager & Context::getAccessControlManager()
|
|
{
|
|
return shared->access_control_manager;
|
|
}
|
|
|
|
const AccessControlManager & Context::getAccessControlManager() const
|
|
{
|
|
return shared->access_control_manager;
|
|
}
|
|
|
|
|
|
void Context::setUsersConfig(const ConfigurationPtr & config)
|
|
{
|
|
auto lock = getLock();
|
|
shared->users_config = config;
|
|
shared->access_control_manager.setUsersConfig(*shared->users_config);
|
|
}
|
|
|
|
ConfigurationPtr Context::getUsersConfig()
|
|
{
|
|
auto lock = getLock();
|
|
return shared->users_config;
|
|
}
|
|
|
|
|
|
void Context::setUser(const String & name, const String & password, const Poco::Net::SocketAddress & address, const String & quota_key)
|
|
{
|
|
auto lock = getLock();
|
|
|
|
client_info.current_user = name;
|
|
client_info.current_password = password;
|
|
client_info.current_address = address;
|
|
if (!quota_key.empty())
|
|
client_info.quota_key = quota_key;
|
|
|
|
auto new_user_id = getAccessControlManager().find<User>(name);
|
|
std::shared_ptr<const ContextAccess> new_access;
|
|
if (new_user_id)
|
|
{
|
|
new_access = getAccessControlManager().getContextAccess(*new_user_id, {}, true, settings, current_database, client_info);
|
|
if (!new_access->isClientHostAllowed() || !new_access->isCorrectPassword(password))
|
|
{
|
|
new_user_id = {};
|
|
new_access = nullptr;
|
|
}
|
|
}
|
|
|
|
if (!new_user_id || !new_access)
|
|
throw Exception(name + ": Authentication failed: password is incorrect or there is no user with such name", ErrorCodes::AUTHENTICATION_FAILED);
|
|
|
|
user_id = new_user_id;
|
|
access = std::move(new_access);
|
|
current_roles.clear();
|
|
use_default_roles = true;
|
|
|
|
setSettings(*access->getDefaultSettings());
|
|
}
|
|
|
|
std::shared_ptr<const User> Context::getUser() const
|
|
{
|
|
auto lock = getLock();
|
|
return access->getUser();
|
|
}
|
|
|
|
String Context::getUserName() const
|
|
{
|
|
auto lock = getLock();
|
|
return access->getUserName();
|
|
}
|
|
|
|
std::optional<UUID> Context::getUserID() const
|
|
{
|
|
auto lock = getLock();
|
|
return user_id;
|
|
}
|
|
|
|
|
|
void Context::setCurrentRoles(const std::vector<UUID> & current_roles_)
|
|
{
|
|
auto lock = getLock();
|
|
if (current_roles == current_roles_ && !use_default_roles)
|
|
return;
|
|
current_roles = current_roles_;
|
|
use_default_roles = false;
|
|
calculateAccessRights();
|
|
}
|
|
|
|
void Context::setCurrentRolesDefault()
|
|
{
|
|
auto lock = getLock();
|
|
if (use_default_roles)
|
|
return;
|
|
current_roles.clear();
|
|
use_default_roles = true;
|
|
calculateAccessRights();
|
|
}
|
|
|
|
std::vector<UUID> Context::getCurrentRoles() const
|
|
{
|
|
return getAccess()->getCurrentRoles();
|
|
}
|
|
|
|
Strings Context::getCurrentRolesNames() const
|
|
{
|
|
return getAccess()->getCurrentRolesNames();
|
|
}
|
|
|
|
std::vector<UUID> Context::getEnabledRoles() const
|
|
{
|
|
return getAccess()->getEnabledRoles();
|
|
}
|
|
|
|
Strings Context::getEnabledRolesNames() const
|
|
{
|
|
return getAccess()->getEnabledRolesNames();
|
|
}
|
|
|
|
|
|
void Context::calculateAccessRights()
|
|
{
|
|
auto lock = getLock();
|
|
if (user_id)
|
|
access = getAccessControlManager().getContextAccess(*user_id, current_roles, use_default_roles, settings, current_database, client_info);
|
|
}
|
|
|
|
|
|
template <typename... Args>
|
|
void Context::checkAccessImpl(const Args &... args) const
|
|
{
|
|
return getAccess()->checkAccess(args...);
|
|
}
|
|
|
|
void Context::checkAccess(const AccessFlags & flags) const { return checkAccessImpl(flags); }
|
|
void Context::checkAccess(const AccessFlags & flags, const std::string_view & database) const { return checkAccessImpl(flags, database); }
|
|
void Context::checkAccess(const AccessFlags & flags, const std::string_view & database, const std::string_view & table) const { return checkAccessImpl(flags, database, table); }
|
|
void Context::checkAccess(const AccessFlags & flags, const std::string_view & database, const std::string_view & table, const std::string_view & column) const { return checkAccessImpl(flags, database, table, column); }
|
|
void Context::checkAccess(const AccessFlags & flags, const std::string_view & database, const std::string_view & table, const std::vector<std::string_view> & columns) const { return checkAccessImpl(flags, database, table, columns); }
|
|
void Context::checkAccess(const AccessFlags & flags, const std::string_view & database, const std::string_view & table, const Strings & columns) const { return checkAccessImpl(flags, database, table, columns); }
|
|
void Context::checkAccess(const AccessFlags & flags, const StorageID & table_id) const { checkAccessImpl(flags, table_id.getDatabaseName(), table_id.getTableName()); }
|
|
void Context::checkAccess(const AccessFlags & flags, const StorageID & table_id, const std::string_view & column) const { checkAccessImpl(flags, table_id.getDatabaseName(), table_id.getTableName(), column); }
|
|
void Context::checkAccess(const AccessFlags & flags, const StorageID & table_id, const std::vector<std::string_view> & columns) const { checkAccessImpl(flags, table_id.getDatabaseName(), table_id.getTableName(), columns); }
|
|
void Context::checkAccess(const AccessFlags & flags, const StorageID & table_id, const Strings & columns) const { checkAccessImpl(flags, table_id.getDatabaseName(), table_id.getTableName(), columns); }
|
|
void Context::checkAccess(const AccessRightsElement & element) const { return checkAccessImpl(element); }
|
|
void Context::checkAccess(const AccessRightsElements & elements) const { return checkAccessImpl(elements); }
|
|
|
|
|
|
std::shared_ptr<const ContextAccess> Context::getAccess() const
|
|
{
|
|
auto lock = getLock();
|
|
return access ? access : ContextAccess::getFullAccess();
|
|
}
|
|
|
|
ASTPtr Context::getRowPolicyCondition(const String & database, const String & table_name, RowPolicy::ConditionType type) const
|
|
{
|
|
auto lock = getLock();
|
|
auto initial_condition = initial_row_policy ? initial_row_policy->getCondition(database, table_name, type) : nullptr;
|
|
return getAccess()->getRowPolicyCondition(database, table_name, type, initial_condition);
|
|
}
|
|
|
|
std::shared_ptr<const EnabledRowPolicies> Context::getRowPolicies() const
|
|
{
|
|
return getAccess()->getRowPolicies();
|
|
}
|
|
|
|
void Context::setInitialRowPolicy()
|
|
{
|
|
auto lock = getLock();
|
|
auto initial_user_id = getAccessControlManager().find<User>(client_info.initial_user);
|
|
initial_row_policy = nullptr;
|
|
if (initial_user_id)
|
|
initial_row_policy = getAccessControlManager().getEnabledRowPolicies(*initial_user_id, {});
|
|
}
|
|
|
|
|
|
std::shared_ptr<const EnabledQuota> Context::getQuota() const
|
|
{
|
|
return getAccess()->getQuota();
|
|
}
|
|
|
|
|
|
void Context::setProfile(const String & profile_name)
|
|
{
|
|
applySettingsChanges(*getAccessControlManager().getProfileSettings(profile_name));
|
|
}
|
|
|
|
|
|
const Scalars & Context::getScalars() const
|
|
{
|
|
return scalars;
|
|
}
|
|
|
|
|
|
const Block & Context::getScalar(const String & name) const
|
|
{
|
|
auto it = scalars.find(name);
|
|
if (scalars.end() == it)
|
|
throw Exception("Scalar " + backQuoteIfNeed(name) + " doesn't exist (internal bug)", ErrorCodes::UNKNOWN_SCALAR);
|
|
return it->second;
|
|
}
|
|
|
|
|
|
Tables Context::getExternalTables() const
|
|
{
|
|
assert(global_context != this || getApplicationType() == ApplicationType::LOCAL);
|
|
auto lock = getLock();
|
|
|
|
Tables res;
|
|
for (const auto & table : external_tables_mapping)
|
|
res[table.first] = table.second->getTable();
|
|
|
|
if (query_context && query_context != this)
|
|
{
|
|
Tables buf = query_context->getExternalTables();
|
|
res.insert(buf.begin(), buf.end());
|
|
}
|
|
else if (session_context && session_context != this)
|
|
{
|
|
Tables buf = session_context->getExternalTables();
|
|
res.insert(buf.begin(), buf.end());
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
void Context::addExternalTable(const String & table_name, TemporaryTableHolder && temporary_table)
|
|
{
|
|
assert(global_context != this || getApplicationType() == ApplicationType::LOCAL);
|
|
auto lock = getLock();
|
|
if (external_tables_mapping.end() != external_tables_mapping.find(table_name))
|
|
throw Exception("Temporary table " + backQuoteIfNeed(table_name) + " already exists.", ErrorCodes::TABLE_ALREADY_EXISTS);
|
|
external_tables_mapping.emplace(table_name, std::make_shared<TemporaryTableHolder>(std::move(temporary_table)));
|
|
}
|
|
|
|
|
|
std::shared_ptr<TemporaryTableHolder> Context::removeExternalTable(const String & table_name)
|
|
{
|
|
assert(global_context != this || getApplicationType() == ApplicationType::LOCAL);
|
|
std::shared_ptr<TemporaryTableHolder> holder;
|
|
{
|
|
auto lock = getLock();
|
|
auto iter = external_tables_mapping.find(table_name);
|
|
if (iter == external_tables_mapping.end())
|
|
return {};
|
|
holder = iter->second;
|
|
external_tables_mapping.erase(iter);
|
|
}
|
|
return holder;
|
|
}
|
|
|
|
|
|
void Context::addScalar(const String & name, const Block & block)
|
|
{
|
|
assert(global_context != this || getApplicationType() == ApplicationType::LOCAL);
|
|
scalars[name] = block;
|
|
}
|
|
|
|
|
|
bool Context::hasScalar(const String & name) const
|
|
{
|
|
assert(global_context != this || getApplicationType() == ApplicationType::LOCAL);
|
|
return scalars.count(name);
|
|
}
|
|
|
|
|
|
StoragePtr Context::executeTableFunction(const ASTPtr & table_expression)
|
|
{
|
|
/// Slightly suboptimal.
|
|
auto hash = table_expression->getTreeHash();
|
|
String key = toString(hash.first) + '_' + toString(hash.second);
|
|
|
|
StoragePtr & res = table_function_results[key];
|
|
|
|
if (!res)
|
|
{
|
|
TableFunctionPtr table_function_ptr = TableFunctionFactory::instance().get(table_expression->as<ASTFunction>()->name, *this);
|
|
|
|
/// Run it and remember the result
|
|
res = table_function_ptr->execute(table_expression, *this, table_function_ptr->getName());
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
void Context::addViewSource(const StoragePtr & storage)
|
|
{
|
|
if (view_source)
|
|
throw Exception(
|
|
"Temporary view source storage " + backQuoteIfNeed(view_source->getName()) + " already exists.", ErrorCodes::TABLE_ALREADY_EXISTS);
|
|
view_source = storage;
|
|
}
|
|
|
|
|
|
StoragePtr Context::getViewSource()
|
|
{
|
|
return view_source;
|
|
}
|
|
|
|
Settings Context::getSettings() const
|
|
{
|
|
return settings;
|
|
}
|
|
|
|
|
|
void Context::setSettings(const Settings & settings_)
|
|
{
|
|
auto lock = getLock();
|
|
auto old_readonly = settings.readonly;
|
|
auto old_allow_ddl = settings.allow_ddl;
|
|
auto old_allow_introspection_functions = settings.allow_introspection_functions;
|
|
|
|
settings = settings_;
|
|
|
|
if ((settings.readonly != old_readonly) || (settings.allow_ddl != old_allow_ddl) || (settings.allow_introspection_functions != old_allow_introspection_functions))
|
|
calculateAccessRights();
|
|
}
|
|
|
|
|
|
void Context::setSetting(const StringRef & name, const String & value)
|
|
{
|
|
auto lock = getLock();
|
|
if (name == "profile")
|
|
{
|
|
setProfile(value);
|
|
return;
|
|
}
|
|
settings.set(name, value);
|
|
|
|
if (name == "readonly" || name == "allow_ddl" || name == "allow_introspection_functions")
|
|
calculateAccessRights();
|
|
}
|
|
|
|
|
|
void Context::setSetting(const StringRef & name, const Field & value)
|
|
{
|
|
auto lock = getLock();
|
|
if (name == "profile")
|
|
{
|
|
setProfile(value.safeGet<String>());
|
|
return;
|
|
}
|
|
settings.set(name, value);
|
|
|
|
if (name == "readonly" || name == "allow_ddl" || name == "allow_introspection_functions")
|
|
calculateAccessRights();
|
|
}
|
|
|
|
|
|
void Context::applySettingChange(const SettingChange & change)
|
|
{
|
|
setSetting(change.name, change.value);
|
|
}
|
|
|
|
|
|
void Context::applySettingsChanges(const SettingsChanges & changes)
|
|
{
|
|
auto lock = getLock();
|
|
for (const SettingChange & change : changes)
|
|
applySettingChange(change);
|
|
}
|
|
|
|
|
|
void Context::checkSettingsConstraints(const SettingChange & change) const
|
|
{
|
|
if (auto settings_constraints = getSettingsConstraints())
|
|
settings_constraints->check(settings, change);
|
|
}
|
|
|
|
void Context::checkSettingsConstraints(const SettingsChanges & changes) const
|
|
{
|
|
if (auto settings_constraints = getSettingsConstraints())
|
|
settings_constraints->check(settings, changes);
|
|
}
|
|
|
|
|
|
void Context::clampToSettingsConstraints(SettingChange & change) const
|
|
{
|
|
if (auto settings_constraints = getSettingsConstraints())
|
|
settings_constraints->clamp(settings, change);
|
|
}
|
|
|
|
void Context::clampToSettingsConstraints(SettingsChanges & changes) const
|
|
{
|
|
if (auto settings_constraints = getSettingsConstraints())
|
|
settings_constraints->clamp(settings, changes);
|
|
}
|
|
|
|
|
|
std::shared_ptr<const SettingsConstraints> Context::getSettingsConstraints() const
|
|
{
|
|
auto lock = getLock();
|
|
return access->getSettingsConstraints();
|
|
}
|
|
|
|
|
|
String Context::getCurrentDatabase() const
|
|
{
|
|
auto lock = getLock();
|
|
return current_database;
|
|
}
|
|
|
|
|
|
String Context::getCurrentQueryId() const
|
|
{
|
|
return client_info.current_query_id;
|
|
}
|
|
|
|
|
|
String Context::getInitialQueryId() const
|
|
{
|
|
return client_info.initial_query_id;
|
|
}
|
|
|
|
|
|
void Context::setCurrentDatabase(const String & name)
|
|
{
|
|
DatabaseCatalog::instance().assertDatabaseExists(name);
|
|
auto lock = getLock();
|
|
calculateAccessRights();
|
|
current_database = name;
|
|
}
|
|
|
|
|
|
void Context::setCurrentQueryId(const String & query_id)
|
|
{
|
|
if (!client_info.current_query_id.empty())
|
|
throw Exception("Logical error: attempt to set query_id twice", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
String query_id_to_set = query_id;
|
|
|
|
if (query_id_to_set.empty()) /// If the user did not submit his query_id, then we generate it ourselves.
|
|
{
|
|
/// Generate random UUID, but using lower quality RNG,
|
|
/// because Poco::UUIDGenerator::generateRandom method is using /dev/random, that is very expensive.
|
|
/// NOTE: Actually we don't need to use UUIDs for query identifiers.
|
|
/// We could use any suitable string instead.
|
|
|
|
union
|
|
{
|
|
char bytes[16];
|
|
struct
|
|
{
|
|
UInt64 a;
|
|
UInt64 b;
|
|
} words;
|
|
} random;
|
|
|
|
random.words.a = thread_local_rng(); //-V656
|
|
random.words.b = thread_local_rng(); //-V656
|
|
|
|
/// Use protected constructor.
|
|
struct QueryUUID : Poco::UUID
|
|
{
|
|
QueryUUID(const char * bytes, Poco::UUID::Version version)
|
|
: Poco::UUID(bytes, version) {}
|
|
};
|
|
|
|
query_id_to_set = QueryUUID(random.bytes, Poco::UUID::UUID_RANDOM).toString();
|
|
}
|
|
|
|
client_info.current_query_id = query_id_to_set;
|
|
}
|
|
|
|
void Context::killCurrentQuery()
|
|
{
|
|
if (process_list_elem)
|
|
{
|
|
process_list_elem->cancelQuery(true);
|
|
}
|
|
};
|
|
|
|
String Context::getDefaultFormat() const
|
|
{
|
|
return default_format.empty() ? "TabSeparated" : default_format;
|
|
}
|
|
|
|
|
|
void Context::setDefaultFormat(const String & name)
|
|
{
|
|
default_format = name;
|
|
}
|
|
|
|
MultiVersion<Macros>::Version Context::getMacros() const
|
|
{
|
|
return shared->macros.get();
|
|
}
|
|
|
|
void Context::setMacros(std::unique_ptr<Macros> && macros)
|
|
{
|
|
shared->macros.set(std::move(macros));
|
|
}
|
|
|
|
const Context & Context::getQueryContext() const
|
|
{
|
|
if (!query_context)
|
|
throw Exception("There is no query", ErrorCodes::THERE_IS_NO_QUERY);
|
|
return *query_context;
|
|
}
|
|
|
|
Context & Context::getQueryContext()
|
|
{
|
|
if (!query_context)
|
|
throw Exception("There is no query", ErrorCodes::THERE_IS_NO_QUERY);
|
|
return *query_context;
|
|
}
|
|
|
|
const Context & Context::getSessionContext() const
|
|
{
|
|
if (!session_context)
|
|
throw Exception("There is no session", ErrorCodes::THERE_IS_NO_SESSION);
|
|
return *session_context;
|
|
}
|
|
|
|
Context & Context::getSessionContext()
|
|
{
|
|
if (!session_context)
|
|
throw Exception("There is no session", ErrorCodes::THERE_IS_NO_SESSION);
|
|
return *session_context;
|
|
}
|
|
|
|
const Context & Context::getGlobalContext() const
|
|
{
|
|
if (!global_context)
|
|
throw Exception("Logical error: there is no global context", ErrorCodes::LOGICAL_ERROR);
|
|
return *global_context;
|
|
}
|
|
|
|
Context & Context::getGlobalContext()
|
|
{
|
|
if (!global_context)
|
|
throw Exception("Logical error: there is no global context", ErrorCodes::LOGICAL_ERROR);
|
|
return *global_context;
|
|
}
|
|
|
|
|
|
const EmbeddedDictionaries & Context::getEmbeddedDictionaries() const
|
|
{
|
|
return getEmbeddedDictionariesImpl(false);
|
|
}
|
|
|
|
EmbeddedDictionaries & Context::getEmbeddedDictionaries()
|
|
{
|
|
return getEmbeddedDictionariesImpl(false);
|
|
}
|
|
|
|
|
|
const ExternalDictionariesLoader & Context::getExternalDictionariesLoader() const
|
|
{
|
|
std::lock_guard lock(shared->external_dictionaries_mutex);
|
|
if (!shared->external_dictionaries_loader)
|
|
{
|
|
if (!this->global_context)
|
|
throw Exception("Logical error: there is no global context", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
shared->external_dictionaries_loader.emplace(*this->global_context);
|
|
}
|
|
return *shared->external_dictionaries_loader;
|
|
}
|
|
|
|
ExternalDictionariesLoader & Context::getExternalDictionariesLoader()
|
|
{
|
|
return const_cast<ExternalDictionariesLoader &>(const_cast<const Context *>(this)->getExternalDictionariesLoader());
|
|
}
|
|
|
|
|
|
const ExternalModelsLoader & Context::getExternalModelsLoader() const
|
|
{
|
|
std::lock_guard lock(shared->external_models_mutex);
|
|
if (!shared->external_models_loader)
|
|
{
|
|
if (!this->global_context)
|
|
throw Exception("Logical error: there is no global context", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
shared->external_models_loader.emplace(*this->global_context);
|
|
}
|
|
return *shared->external_models_loader;
|
|
}
|
|
|
|
ExternalModelsLoader & Context::getExternalModelsLoader()
|
|
{
|
|
return const_cast<ExternalModelsLoader &>(const_cast<const Context *>(this)->getExternalModelsLoader());
|
|
}
|
|
|
|
|
|
EmbeddedDictionaries & Context::getEmbeddedDictionariesImpl(const bool throw_on_error) const
|
|
{
|
|
std::lock_guard lock(shared->embedded_dictionaries_mutex);
|
|
|
|
if (!shared->embedded_dictionaries)
|
|
{
|
|
auto geo_dictionaries_loader = std::make_unique<GeoDictionariesLoader>();
|
|
|
|
shared->embedded_dictionaries.emplace(
|
|
std::move(geo_dictionaries_loader),
|
|
*this->global_context,
|
|
throw_on_error);
|
|
}
|
|
|
|
return *shared->embedded_dictionaries;
|
|
}
|
|
|
|
|
|
void Context::tryCreateEmbeddedDictionaries() const
|
|
{
|
|
static_cast<void>(getEmbeddedDictionariesImpl(true));
|
|
}
|
|
|
|
|
|
void Context::setProgressCallback(ProgressCallback callback)
|
|
{
|
|
/// Callback is set to a session or to a query. In the session, only one query is processed at a time. Therefore, the lock is not needed.
|
|
progress_callback = callback;
|
|
}
|
|
|
|
ProgressCallback Context::getProgressCallback() const
|
|
{
|
|
return progress_callback;
|
|
}
|
|
|
|
|
|
void Context::setProcessListElement(ProcessList::Element * elem)
|
|
{
|
|
/// Set to a session or query. In the session, only one query is processed at a time. Therefore, the lock is not needed.
|
|
process_list_elem = elem;
|
|
}
|
|
|
|
ProcessList::Element * Context::getProcessListElement() const
|
|
{
|
|
return process_list_elem;
|
|
}
|
|
|
|
|
|
void Context::setUncompressedCache(size_t max_size_in_bytes)
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (shared->uncompressed_cache)
|
|
throw Exception("Uncompressed cache has been already created.", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
shared->uncompressed_cache = std::make_shared<UncompressedCache>(max_size_in_bytes);
|
|
}
|
|
|
|
|
|
UncompressedCachePtr Context::getUncompressedCache() const
|
|
{
|
|
auto lock = getLock();
|
|
return shared->uncompressed_cache;
|
|
}
|
|
|
|
|
|
void Context::dropUncompressedCache() const
|
|
{
|
|
auto lock = getLock();
|
|
if (shared->uncompressed_cache)
|
|
shared->uncompressed_cache->reset();
|
|
}
|
|
|
|
|
|
void Context::setMarkCache(size_t cache_size_in_bytes)
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (shared->mark_cache)
|
|
throw Exception("Mark cache has been already created.", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
shared->mark_cache = std::make_shared<MarkCache>(cache_size_in_bytes);
|
|
}
|
|
|
|
|
|
MarkCachePtr Context::getMarkCache() const
|
|
{
|
|
auto lock = getLock();
|
|
return shared->mark_cache;
|
|
}
|
|
|
|
|
|
void Context::dropMarkCache() const
|
|
{
|
|
auto lock = getLock();
|
|
if (shared->mark_cache)
|
|
shared->mark_cache->reset();
|
|
}
|
|
|
|
|
|
void Context::dropCaches() const
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (shared->uncompressed_cache)
|
|
shared->uncompressed_cache->reset();
|
|
|
|
if (shared->mark_cache)
|
|
shared->mark_cache->reset();
|
|
}
|
|
|
|
BackgroundProcessingPool & Context::getBackgroundPool()
|
|
{
|
|
auto lock = getLock();
|
|
if (!shared->background_pool)
|
|
{
|
|
BackgroundProcessingPool::PoolSettings pool_settings;
|
|
const auto & config = getConfigRef();
|
|
pool_settings.thread_sleep_seconds = config.getDouble("background_processing_pool_thread_sleep_seconds", 10);
|
|
pool_settings.thread_sleep_seconds_random_part = config.getDouble("background_processing_pool_thread_sleep_seconds_random_part", 1.0);
|
|
pool_settings.thread_sleep_seconds_if_nothing_to_do = config.getDouble("background_processing_pool_thread_sleep_seconds_if_nothing_to_do", 0.1);
|
|
pool_settings.task_sleep_seconds_when_no_work_min = config.getDouble("background_processing_pool_task_sleep_seconds_when_no_work_min", 10);
|
|
pool_settings.task_sleep_seconds_when_no_work_max = config.getDouble("background_processing_pool_task_sleep_seconds_when_no_work_max", 600);
|
|
pool_settings.task_sleep_seconds_when_no_work_multiplier = config.getDouble("background_processing_pool_task_sleep_seconds_when_no_work_multiplier", 1.1);
|
|
pool_settings.task_sleep_seconds_when_no_work_random_part = config.getDouble("background_processing_pool_task_sleep_seconds_when_no_work_random_part", 1.0);
|
|
shared->background_pool.emplace(settings.background_pool_size, pool_settings);
|
|
}
|
|
return *shared->background_pool;
|
|
}
|
|
|
|
BackgroundProcessingPool & Context::getBackgroundMovePool()
|
|
{
|
|
auto lock = getLock();
|
|
if (!shared->background_move_pool)
|
|
{
|
|
BackgroundProcessingPool::PoolSettings pool_settings;
|
|
const auto & config = getConfigRef();
|
|
pool_settings.thread_sleep_seconds = config.getDouble("background_move_processing_pool_thread_sleep_seconds", 10);
|
|
pool_settings.thread_sleep_seconds_random_part = config.getDouble("background_move_processing_pool_thread_sleep_seconds_random_part", 1.0);
|
|
pool_settings.thread_sleep_seconds_if_nothing_to_do = config.getDouble("background_move_processing_pool_thread_sleep_seconds_if_nothing_to_do", 0.1);
|
|
pool_settings.task_sleep_seconds_when_no_work_min = config.getDouble("background_move_processing_pool_task_sleep_seconds_when_no_work_min", 10);
|
|
pool_settings.task_sleep_seconds_when_no_work_max = config.getDouble("background_move_processing_pool_task_sleep_seconds_when_no_work_max", 600);
|
|
pool_settings.task_sleep_seconds_when_no_work_multiplier = config.getDouble("background_move_processing_pool_task_sleep_seconds_when_no_work_multiplier", 1.1);
|
|
pool_settings.task_sleep_seconds_when_no_work_random_part = config.getDouble("background_move_processing_pool_task_sleep_seconds_when_no_work_random_part", 1.0);
|
|
pool_settings.tasks_metric = CurrentMetrics::BackgroundMovePoolTask;
|
|
pool_settings.memory_metric = CurrentMetrics::MemoryTrackingInBackgroundMoveProcessingPool;
|
|
shared->background_move_pool.emplace(settings.background_move_pool_size, pool_settings, "BackgroundMovePool", "BgMoveProcPool");
|
|
}
|
|
return *shared->background_move_pool;
|
|
}
|
|
|
|
BackgroundSchedulePool & Context::getBufferFlushSchedulePool()
|
|
{
|
|
auto lock = getLock();
|
|
if (!shared->buffer_flush_schedule_pool)
|
|
shared->buffer_flush_schedule_pool.emplace(settings.background_buffer_flush_schedule_pool_size);
|
|
return *shared->buffer_flush_schedule_pool;
|
|
}
|
|
|
|
BackgroundSchedulePool & Context::getSchedulePool()
|
|
{
|
|
auto lock = getLock();
|
|
if (!shared->schedule_pool)
|
|
shared->schedule_pool.emplace(settings.background_schedule_pool_size);
|
|
return *shared->schedule_pool;
|
|
}
|
|
|
|
BackgroundSchedulePool & Context::getDistributedSchedulePool()
|
|
{
|
|
auto lock = getLock();
|
|
if (!shared->distributed_schedule_pool)
|
|
shared->distributed_schedule_pool.emplace(settings.background_distributed_schedule_pool_size);
|
|
return *shared->distributed_schedule_pool;
|
|
}
|
|
|
|
void Context::setDDLWorker(std::unique_ptr<DDLWorker> ddl_worker)
|
|
{
|
|
auto lock = getLock();
|
|
if (shared->ddl_worker)
|
|
throw Exception("DDL background thread has already been initialized.", ErrorCodes::LOGICAL_ERROR);
|
|
shared->ddl_worker = std::move(ddl_worker);
|
|
}
|
|
|
|
DDLWorker & Context::getDDLWorker() const
|
|
{
|
|
auto lock = getLock();
|
|
if (!shared->ddl_worker)
|
|
throw Exception("DDL background thread is not initialized.", ErrorCodes::LOGICAL_ERROR);
|
|
return *shared->ddl_worker;
|
|
}
|
|
|
|
zkutil::ZooKeeperPtr Context::getZooKeeper() const
|
|
{
|
|
std::lock_guard lock(shared->zookeeper_mutex);
|
|
|
|
if (!shared->zookeeper)
|
|
shared->zookeeper = std::make_shared<zkutil::ZooKeeper>(getConfigRef(), "zookeeper");
|
|
else if (shared->zookeeper->expired())
|
|
shared->zookeeper = shared->zookeeper->startNewSession();
|
|
|
|
return shared->zookeeper;
|
|
}
|
|
|
|
void Context::resetZooKeeper() const
|
|
{
|
|
std::lock_guard lock(shared->zookeeper_mutex);
|
|
shared->zookeeper.reset();
|
|
}
|
|
|
|
bool Context::hasZooKeeper() const
|
|
{
|
|
return getConfigRef().has("zookeeper");
|
|
}
|
|
|
|
|
|
void Context::setInterserverIOAddress(const String & host, UInt16 port)
|
|
{
|
|
shared->interserver_io_host = host;
|
|
shared->interserver_io_port = port;
|
|
}
|
|
|
|
std::pair<String, UInt16> Context::getInterserverIOAddress() const
|
|
{
|
|
if (shared->interserver_io_host.empty() || shared->interserver_io_port == 0)
|
|
throw Exception("Parameter 'interserver_http(s)_port' required for replication is not specified in configuration file.",
|
|
ErrorCodes::NO_ELEMENTS_IN_CONFIG);
|
|
|
|
return { shared->interserver_io_host, shared->interserver_io_port };
|
|
}
|
|
|
|
void Context::setInterserverCredentials(const String & user_, const String & password)
|
|
{
|
|
shared->interserver_io_user = user_;
|
|
shared->interserver_io_password = password;
|
|
}
|
|
|
|
std::pair<String, String> Context::getInterserverCredentials() const
|
|
{
|
|
return { shared->interserver_io_user, shared->interserver_io_password };
|
|
}
|
|
|
|
void Context::setInterserverScheme(const String & scheme)
|
|
{
|
|
shared->interserver_scheme = scheme;
|
|
}
|
|
|
|
String Context::getInterserverScheme() const
|
|
{
|
|
return shared->interserver_scheme;
|
|
}
|
|
|
|
void Context::setRemoteHostFilter(const Poco::Util::AbstractConfiguration & config)
|
|
{
|
|
shared->remote_host_filter.setValuesFromConfig(config);
|
|
}
|
|
|
|
const RemoteHostFilter & Context::getRemoteHostFilter() const
|
|
{
|
|
return shared->remote_host_filter;
|
|
}
|
|
|
|
UInt16 Context::getTCPPort() const
|
|
{
|
|
auto lock = getLock();
|
|
|
|
const auto & config = getConfigRef();
|
|
return config.getInt("tcp_port", DBMS_DEFAULT_PORT);
|
|
}
|
|
|
|
std::optional<UInt16> Context::getTCPPortSecure() const
|
|
{
|
|
auto lock = getLock();
|
|
|
|
const auto & config = getConfigRef();
|
|
if (config.has("tcp_port_secure"))
|
|
return config.getInt("tcp_port_secure");
|
|
return {};
|
|
}
|
|
|
|
std::shared_ptr<Cluster> Context::getCluster(const std::string & cluster_name) const
|
|
{
|
|
auto res = getClusters().getCluster(cluster_name);
|
|
|
|
if (!res)
|
|
throw Exception("Requested cluster '" + cluster_name + "' not found", ErrorCodes::BAD_GET);
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
std::shared_ptr<Cluster> Context::tryGetCluster(const std::string & cluster_name) const
|
|
{
|
|
return getClusters().getCluster(cluster_name);
|
|
}
|
|
|
|
|
|
void Context::reloadClusterConfig()
|
|
{
|
|
while (true)
|
|
{
|
|
ConfigurationPtr cluster_config;
|
|
{
|
|
std::lock_guard lock(shared->clusters_mutex);
|
|
cluster_config = shared->clusters_config;
|
|
}
|
|
|
|
const auto & config = cluster_config ? *cluster_config : getConfigRef();
|
|
auto new_clusters = std::make_unique<Clusters>(config, settings);
|
|
|
|
{
|
|
std::lock_guard lock(shared->clusters_mutex);
|
|
if (shared->clusters_config.get() == cluster_config.get())
|
|
{
|
|
shared->clusters = std::move(new_clusters);
|
|
return;
|
|
}
|
|
|
|
/// Clusters config has been suddenly changed, recompute clusters
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
Clusters & Context::getClusters() const
|
|
{
|
|
std::lock_guard lock(shared->clusters_mutex);
|
|
if (!shared->clusters)
|
|
{
|
|
const auto & config = shared->clusters_config ? *shared->clusters_config : getConfigRef();
|
|
shared->clusters = std::make_unique<Clusters>(config, settings);
|
|
}
|
|
|
|
return *shared->clusters;
|
|
}
|
|
|
|
|
|
/// On repeating calls updates existing clusters and adds new clusters, doesn't delete old clusters
|
|
void Context::setClustersConfig(const ConfigurationPtr & config, const String & config_name)
|
|
{
|
|
std::lock_guard lock(shared->clusters_mutex);
|
|
|
|
shared->clusters_config = config;
|
|
|
|
if (!shared->clusters)
|
|
shared->clusters = std::make_unique<Clusters>(*shared->clusters_config, settings, config_name);
|
|
else
|
|
shared->clusters->updateClusters(*shared->clusters_config, settings, config_name);
|
|
}
|
|
|
|
|
|
void Context::setCluster(const String & cluster_name, const std::shared_ptr<Cluster> & cluster)
|
|
{
|
|
std::lock_guard lock(shared->clusters_mutex);
|
|
|
|
if (!shared->clusters)
|
|
throw Exception("Clusters are not set", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
shared->clusters->setCluster(cluster_name, cluster);
|
|
}
|
|
|
|
|
|
void Context::initializeSystemLogs()
|
|
{
|
|
auto lock = getLock();
|
|
shared->system_logs.emplace(*global_context, getConfigRef());
|
|
}
|
|
|
|
void Context::initializeTraceCollector()
|
|
{
|
|
shared->initializeTraceCollector(getTraceLog());
|
|
}
|
|
|
|
bool Context::hasTraceCollector() const
|
|
{
|
|
return shared->hasTraceCollector();
|
|
}
|
|
|
|
|
|
std::shared_ptr<QueryLog> Context::getQueryLog()
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (!shared->system_logs)
|
|
return {};
|
|
|
|
return shared->system_logs->query_log;
|
|
}
|
|
|
|
|
|
std::shared_ptr<QueryThreadLog> Context::getQueryThreadLog()
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (!shared->system_logs)
|
|
return {};
|
|
|
|
return shared->system_logs->query_thread_log;
|
|
}
|
|
|
|
|
|
std::shared_ptr<PartLog> Context::getPartLog(const String & part_database)
|
|
{
|
|
auto lock = getLock();
|
|
|
|
/// No part log or system logs are shutting down.
|
|
if (!shared->system_logs)
|
|
return {};
|
|
|
|
/// Will not log operations on system tables (including part_log itself).
|
|
/// It doesn't make sense and not allow to destruct PartLog correctly due to infinite logging and flushing,
|
|
/// and also make troubles on startup.
|
|
if (part_database == DatabaseCatalog::SYSTEM_DATABASE)
|
|
return {};
|
|
|
|
return shared->system_logs->part_log;
|
|
}
|
|
|
|
|
|
std::shared_ptr<TraceLog> Context::getTraceLog()
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (!shared->system_logs)
|
|
return {};
|
|
|
|
return shared->system_logs->trace_log;
|
|
}
|
|
|
|
|
|
std::shared_ptr<TextLog> Context::getTextLog()
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (!shared->system_logs)
|
|
return {};
|
|
|
|
return shared->system_logs->text_log;
|
|
}
|
|
|
|
|
|
std::shared_ptr<MetricLog> Context::getMetricLog()
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (!shared->system_logs)
|
|
return {};
|
|
|
|
return shared->system_logs->metric_log;
|
|
}
|
|
|
|
|
|
CompressionCodecPtr Context::chooseCompressionCodec(size_t part_size, double part_size_ratio) const
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (!shared->compression_codec_selector)
|
|
{
|
|
constexpr auto config_name = "compression";
|
|
const auto & config = getConfigRef();
|
|
|
|
if (config.has(config_name))
|
|
shared->compression_codec_selector = std::make_unique<CompressionCodecSelector>(config, "compression");
|
|
else
|
|
shared->compression_codec_selector = std::make_unique<CompressionCodecSelector>();
|
|
}
|
|
|
|
return shared->compression_codec_selector->choose(part_size, part_size_ratio);
|
|
}
|
|
|
|
|
|
DiskPtr Context::getDisk(const String & name) const
|
|
{
|
|
auto lock = getLock();
|
|
|
|
auto disk_selector = getDiskSelector();
|
|
|
|
return disk_selector->get(name);
|
|
}
|
|
|
|
|
|
DiskSelectorPtr Context::getDiskSelector() const
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (!shared->merge_tree_disk_selector)
|
|
{
|
|
constexpr auto config_name = "storage_configuration.disks";
|
|
const auto & config = getConfigRef();
|
|
|
|
shared->merge_tree_disk_selector = std::make_shared<DiskSelector>(config, config_name, *this);
|
|
}
|
|
return shared->merge_tree_disk_selector;
|
|
}
|
|
|
|
|
|
StoragePolicyPtr Context::getStoragePolicy(const String & name) const
|
|
{
|
|
auto lock = getLock();
|
|
|
|
auto policy_selector = getStoragePolicySelector();
|
|
|
|
return policy_selector->get(name);
|
|
}
|
|
|
|
|
|
StoragePolicySelectorPtr Context::getStoragePolicySelector() const
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (!shared->merge_tree_storage_policy_selector)
|
|
{
|
|
constexpr auto config_name = "storage_configuration.policies";
|
|
const auto & config = getConfigRef();
|
|
|
|
shared->merge_tree_storage_policy_selector = std::make_shared<StoragePolicySelector>(config, config_name, getDiskSelector());
|
|
}
|
|
return shared->merge_tree_storage_policy_selector;
|
|
}
|
|
|
|
|
|
void Context::updateStorageConfiguration(const Poco::Util::AbstractConfiguration & config)
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (shared->merge_tree_disk_selector)
|
|
shared->merge_tree_disk_selector = shared->merge_tree_disk_selector->updateFromConfig(config, "storage_configuration.disks", *this);
|
|
|
|
if (shared->merge_tree_storage_policy_selector)
|
|
{
|
|
try
|
|
{
|
|
shared->merge_tree_storage_policy_selector = shared->merge_tree_storage_policy_selector->updateFromConfig(config, "storage_configuration.policies", shared->merge_tree_disk_selector);
|
|
}
|
|
catch (Exception & e)
|
|
{
|
|
LOG_ERROR(shared->log, "An error has occured while reloading storage policies, storage policies were not applied: " << e.message());
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
const MergeTreeSettings & Context::getMergeTreeSettings() const
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (!shared->merge_tree_settings)
|
|
{
|
|
const auto & config = getConfigRef();
|
|
MergeTreeSettings mt_settings;
|
|
mt_settings.loadFromConfig("merge_tree", config);
|
|
shared->merge_tree_settings.emplace(mt_settings);
|
|
}
|
|
|
|
return *shared->merge_tree_settings;
|
|
}
|
|
|
|
|
|
void Context::checkCanBeDropped(const String & database, const String & table, const size_t & size, const size_t & max_size_to_drop) const
|
|
{
|
|
if (!max_size_to_drop || size <= max_size_to_drop)
|
|
return;
|
|
|
|
Poco::File force_file(getFlagsPath() + "force_drop_table");
|
|
bool force_file_exists = force_file.exists();
|
|
|
|
if (force_file_exists)
|
|
{
|
|
try
|
|
{
|
|
force_file.remove();
|
|
return;
|
|
}
|
|
catch (...)
|
|
{
|
|
/// User should recreate force file on each drop, it shouldn't be protected
|
|
tryLogCurrentException("Drop table check", "Can't remove force file to enable table or partition drop");
|
|
}
|
|
}
|
|
|
|
String size_str = formatReadableSizeWithDecimalSuffix(size);
|
|
String max_size_to_drop_str = formatReadableSizeWithDecimalSuffix(max_size_to_drop);
|
|
std::stringstream ostr;
|
|
|
|
ostr << "Table or Partition in " << backQuoteIfNeed(database) << "." << backQuoteIfNeed(table) << " was not dropped.\n"
|
|
<< "Reason:\n"
|
|
<< "1. Size (" << size_str << ") is greater than max_[table/partition]_size_to_drop (" << max_size_to_drop_str << ")\n"
|
|
<< "2. File '" << force_file.path() << "' intended to force DROP "
|
|
<< (force_file_exists ? "exists but not writeable (could not be removed)" : "doesn't exist") << "\n";
|
|
|
|
ostr << "How to fix this:\n"
|
|
<< "1. Either increase (or set to zero) max_[table/partition]_size_to_drop in server config and restart ClickHouse\n"
|
|
<< "2. Either create forcing file " << force_file.path() << " and make sure that ClickHouse has write permission for it.\n"
|
|
<< "Example:\nsudo touch '" << force_file.path() << "' && sudo chmod 666 '" << force_file.path() << "'";
|
|
|
|
throw Exception(ostr.str(), ErrorCodes::TABLE_SIZE_EXCEEDS_MAX_DROP_SIZE_LIMIT);
|
|
}
|
|
|
|
|
|
void Context::setMaxTableSizeToDrop(size_t max_size)
|
|
{
|
|
// Is initialized at server startup and updated at config reload
|
|
shared->max_table_size_to_drop.store(max_size, std::memory_order_relaxed);
|
|
}
|
|
|
|
|
|
void Context::checkTableCanBeDropped(const String & database, const String & table, const size_t & table_size) const
|
|
{
|
|
size_t max_table_size_to_drop = shared->max_table_size_to_drop.load(std::memory_order_relaxed);
|
|
|
|
checkCanBeDropped(database, table, table_size, max_table_size_to_drop);
|
|
}
|
|
|
|
|
|
void Context::setMaxPartitionSizeToDrop(size_t max_size)
|
|
{
|
|
// Is initialized at server startup and updated at config reload
|
|
shared->max_partition_size_to_drop.store(max_size, std::memory_order_relaxed);
|
|
}
|
|
|
|
|
|
void Context::checkPartitionCanBeDropped(const String & database, const String & table, const size_t & partition_size) const
|
|
{
|
|
size_t max_partition_size_to_drop = shared->max_partition_size_to_drop.load(std::memory_order_relaxed);
|
|
|
|
checkCanBeDropped(database, table, partition_size, max_partition_size_to_drop);
|
|
}
|
|
|
|
|
|
BlockInputStreamPtr Context::getInputFormat(const String & name, ReadBuffer & buf, const Block & sample, UInt64 max_block_size) const
|
|
{
|
|
return FormatFactory::instance().getInput(name, buf, sample, *this, max_block_size);
|
|
}
|
|
|
|
BlockOutputStreamPtr Context::getOutputFormat(const String & name, WriteBuffer & buf, const Block & sample) const
|
|
{
|
|
return FormatFactory::instance().getOutput(name, buf, sample, *this);
|
|
}
|
|
|
|
OutputFormatPtr Context::getOutputFormatProcessor(const String & name, WriteBuffer & buf, const Block & sample) const
|
|
{
|
|
return FormatFactory::instance().getOutputFormat(name, buf, sample, *this);
|
|
}
|
|
|
|
|
|
time_t Context::getUptimeSeconds() const
|
|
{
|
|
auto lock = getLock();
|
|
return shared->uptime_watch.elapsedSeconds();
|
|
}
|
|
|
|
|
|
void Context::setConfigReloadCallback(ConfigReloadCallback && callback)
|
|
{
|
|
/// Is initialized at server startup, so lock isn't required. Otherwise use mutex.
|
|
shared->config_reload_callback = std::move(callback);
|
|
}
|
|
|
|
void Context::reloadConfig() const
|
|
{
|
|
/// Use mutex if callback may be changed after startup.
|
|
if (!shared->config_reload_callback)
|
|
throw Exception("Can't reload config beacuse config_reload_callback is not set.", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
shared->config_reload_callback();
|
|
}
|
|
|
|
|
|
void Context::shutdown()
|
|
{
|
|
shared->shutdown();
|
|
}
|
|
|
|
|
|
Context::ApplicationType Context::getApplicationType() const
|
|
{
|
|
return shared->application_type;
|
|
}
|
|
|
|
void Context::setApplicationType(ApplicationType type)
|
|
{
|
|
/// Lock isn't required, you should set it at start
|
|
shared->application_type = type;
|
|
}
|
|
|
|
void Context::setDefaultProfiles(const Poco::Util::AbstractConfiguration & config)
|
|
{
|
|
shared->default_profile_name = config.getString("default_profile", "default");
|
|
getAccessControlManager().setDefaultProfileName(shared->default_profile_name);
|
|
|
|
shared->system_profile_name = config.getString("system_profile", shared->default_profile_name);
|
|
setProfile(shared->system_profile_name);
|
|
}
|
|
|
|
String Context::getDefaultProfileName() const
|
|
{
|
|
return shared->default_profile_name;
|
|
}
|
|
|
|
String Context::getSystemProfileName() const
|
|
{
|
|
return shared->system_profile_name;
|
|
}
|
|
|
|
String Context::getFormatSchemaPath() const
|
|
{
|
|
return shared->format_schema_path;
|
|
}
|
|
|
|
void Context::setFormatSchemaPath(const String & path)
|
|
{
|
|
shared->format_schema_path = path;
|
|
}
|
|
|
|
Context::SampleBlockCache & Context::getSampleBlockCache() const
|
|
{
|
|
return getQueryContext().sample_block_cache;
|
|
}
|
|
|
|
|
|
bool Context::hasQueryParameters() const
|
|
{
|
|
return !query_parameters.empty();
|
|
}
|
|
|
|
|
|
const NameToNameMap & Context::getQueryParameters() const
|
|
{
|
|
return query_parameters;
|
|
}
|
|
|
|
|
|
void Context::setQueryParameter(const String & name, const String & value)
|
|
{
|
|
if (!query_parameters.emplace(name, value).second)
|
|
throw Exception("Duplicate name " + backQuote(name) + " of query parameter", ErrorCodes::BAD_ARGUMENTS);
|
|
}
|
|
|
|
|
|
#if USE_EMBEDDED_COMPILER
|
|
|
|
std::shared_ptr<CompiledExpressionCache> Context::getCompiledExpressionCache() const
|
|
{
|
|
auto lock = getLock();
|
|
return shared->compiled_expression_cache;
|
|
}
|
|
|
|
void Context::setCompiledExpressionCache(size_t cache_size)
|
|
{
|
|
|
|
auto lock = getLock();
|
|
|
|
if (shared->compiled_expression_cache)
|
|
throw Exception("Compiled expressions cache has been already created.", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
shared->compiled_expression_cache = std::make_shared<CompiledExpressionCache>(cache_size);
|
|
}
|
|
|
|
void Context::dropCompiledExpressionCache() const
|
|
{
|
|
auto lock = getLock();
|
|
if (shared->compiled_expression_cache)
|
|
shared->compiled_expression_cache->reset();
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
void Context::addXDBCBridgeCommand(std::unique_ptr<ShellCommand> cmd) const
|
|
{
|
|
auto lock = getLock();
|
|
shared->bridge_commands.emplace_back(std::move(cmd));
|
|
}
|
|
|
|
|
|
IHostContextPtr & Context::getHostContext()
|
|
{
|
|
return host_context;
|
|
}
|
|
|
|
|
|
const IHostContextPtr & Context::getHostContext() const
|
|
{
|
|
return host_context;
|
|
}
|
|
|
|
|
|
std::shared_ptr<ActionLocksManager> Context::getActionLocksManager()
|
|
{
|
|
auto lock = getLock();
|
|
|
|
if (!shared->action_locks_manager)
|
|
shared->action_locks_manager = std::make_shared<ActionLocksManager>(getGlobalContext());
|
|
|
|
return shared->action_locks_manager;
|
|
}
|
|
|
|
|
|
void Context::setExternalTablesInitializer(ExternalTablesInitializer && initializer)
|
|
{
|
|
if (external_tables_initializer_callback)
|
|
throw Exception("External tables initializer is already set", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
external_tables_initializer_callback = std::move(initializer);
|
|
}
|
|
|
|
void Context::initializeExternalTablesIfSet()
|
|
{
|
|
if (external_tables_initializer_callback)
|
|
{
|
|
external_tables_initializer_callback(*this);
|
|
/// Reset callback
|
|
external_tables_initializer_callback = {};
|
|
}
|
|
}
|
|
|
|
|
|
void Context::setInputInitializer(InputInitializer && initializer)
|
|
{
|
|
if (input_initializer_callback)
|
|
throw Exception("Input initializer is already set", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
input_initializer_callback = std::move(initializer);
|
|
}
|
|
|
|
|
|
void Context::initializeInput(const StoragePtr & input_storage)
|
|
{
|
|
if (!input_initializer_callback)
|
|
throw Exception("Input initializer is not set", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
input_initializer_callback(*this, input_storage);
|
|
/// Reset callback
|
|
input_initializer_callback = {};
|
|
}
|
|
|
|
|
|
void Context::setInputBlocksReaderCallback(InputBlocksReader && reader)
|
|
{
|
|
if (input_blocks_reader)
|
|
throw Exception("Input blocks reader is already set", ErrorCodes::LOGICAL_ERROR);
|
|
|
|
input_blocks_reader = std::move(reader);
|
|
}
|
|
|
|
|
|
InputBlocksReader Context::getInputBlocksReaderCallback() const
|
|
{
|
|
return input_blocks_reader;
|
|
}
|
|
|
|
|
|
void Context::resetInputCallbacks()
|
|
{
|
|
if (input_initializer_callback)
|
|
input_initializer_callback = {};
|
|
|
|
if (input_blocks_reader)
|
|
input_blocks_reader = {};
|
|
}
|
|
|
|
|
|
StorageID Context::resolveStorageID(StorageID storage_id, StorageNamespace where) const
|
|
{
|
|
if (storage_id.uuid != UUIDHelpers::Nil)
|
|
return storage_id;
|
|
|
|
auto lock = getLock();
|
|
std::optional<Exception> exc;
|
|
auto resolved = resolveStorageIDImpl(std::move(storage_id), where, &exc);
|
|
if (exc)
|
|
throw Exception(*exc);
|
|
return resolved;
|
|
}
|
|
|
|
StorageID Context::tryResolveStorageID(StorageID storage_id, StorageNamespace where) const
|
|
{
|
|
if (storage_id.uuid != UUIDHelpers::Nil)
|
|
return storage_id;
|
|
|
|
auto lock = getLock();
|
|
return resolveStorageIDImpl(std::move(storage_id), where, nullptr);
|
|
}
|
|
|
|
StorageID Context::resolveStorageIDImpl(StorageID storage_id, StorageNamespace where, std::optional<Exception> * exception) const
|
|
{
|
|
if (storage_id.uuid != UUIDHelpers::Nil)
|
|
return storage_id;
|
|
|
|
if (!storage_id)
|
|
{
|
|
if (exception)
|
|
exception->emplace("Both table name and UUID are empty", ErrorCodes::UNKNOWN_TABLE);
|
|
return storage_id;
|
|
}
|
|
|
|
bool look_for_external_table = where & StorageNamespace::ResolveExternal;
|
|
bool in_current_database = where & StorageNamespace::ResolveCurrentDatabase;
|
|
bool in_specified_database = where & StorageNamespace::ResolveGlobal;
|
|
|
|
if (!storage_id.database_name.empty())
|
|
{
|
|
if (in_specified_database)
|
|
return storage_id; /// NOTE There is no guarantees that table actually exists in database.
|
|
if (exception)
|
|
exception->emplace("External and temporary tables have no database, but " +
|
|
storage_id.database_name + " is specified", ErrorCodes::UNKNOWN_TABLE);
|
|
return StorageID::createEmpty();
|
|
}
|
|
|
|
/// Database name is not specified. It's temporary table or table in current database.
|
|
|
|
if (look_for_external_table)
|
|
{
|
|
/// Global context should not contain temporary tables
|
|
assert(global_context != this || getApplicationType() == ApplicationType::LOCAL);
|
|
|
|
auto resolved_id = StorageID::createEmpty();
|
|
auto try_resolve = [&](const Context & context) -> bool
|
|
{
|
|
const auto & tables = context.external_tables_mapping;
|
|
auto it = tables.find(storage_id.getTableName());
|
|
if (it == tables.end())
|
|
return false;
|
|
resolved_id = it->second->getGlobalTableID();
|
|
return true;
|
|
};
|
|
|
|
/// Firstly look for temporary table in current context
|
|
if (try_resolve(*this))
|
|
return resolved_id;
|
|
|
|
/// If not found and current context was created from some query context, look for temporary table in query context
|
|
bool is_local_context = query_context && query_context != this;
|
|
if (is_local_context && try_resolve(*query_context))
|
|
return resolved_id;
|
|
|
|
/// If not found and current context was created from some session context, look for temporary table in session context
|
|
bool is_local_or_query_context = session_context && session_context != this;
|
|
if (is_local_or_query_context && try_resolve(*session_context))
|
|
return resolved_id;
|
|
}
|
|
|
|
/// Temporary table not found. It's table in current database.
|
|
|
|
if (in_current_database)
|
|
{
|
|
if (current_database.empty())
|
|
{
|
|
if (exception)
|
|
exception->emplace("Default database is not selected", ErrorCodes::UNKNOWN_DATABASE);
|
|
return StorageID::createEmpty();
|
|
}
|
|
storage_id.database_name = current_database;
|
|
/// NOTE There is no guarantees that table actually exists in database.
|
|
return storage_id;
|
|
}
|
|
|
|
if (exception)
|
|
exception->emplace("Cannot resolve database name for table " + storage_id.getNameForLogs(), ErrorCodes::UNKNOWN_TABLE);
|
|
return StorageID::createEmpty();
|
|
}
|
|
|
|
}
|