mirror of
https://github.com/ClickHouse/ClickHouse.git
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208 lines
7.0 KiB
C++
208 lines
7.0 KiB
C++
#pragma once
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#include <chrono>
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#include <optional>
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#include <Poco/Util/XMLConfiguration.h>
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#include <Poco/Logger.h>
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#include <Poco/ConsoleChannel.h>
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#include <Poco/FormattingChannel.h>
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#include <Poco/PatternFormatter.h>
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#include <Poco/UUIDGenerator.h>
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#include <Poco/File.h>
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#include <Poco/Process.h>
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#include <Poco/FileChannel.h>
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#include <Poco/SplitterChannel.h>
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#include <Poco/Util/HelpFormatter.h>
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#include <boost/algorithm/string.hpp>
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#include <common/logger_useful.h>
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#include <Common/ThreadPool.h>
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#include <Common/Exception.h>
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#include <Common/ZooKeeper/ZooKeeper.h>
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#include <Common/ZooKeeper/KeeperException.h>
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#include <common/getFQDNOrHostName.h>
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#include <Common/isLocalAddress.h>
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#include <Common/typeid_cast.h>
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#include <Common/ClickHouseRevision.h>
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#include <Common/formatReadable.h>
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#include <Common/DNSResolver.h>
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#include <Common/CurrentThread.h>
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#include <Common/escapeForFileName.h>
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#include <Common/getNumberOfPhysicalCPUCores.h>
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#include <Common/ThreadStatus.h>
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#include <Client/Connection.h>
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#include <Interpreters/Context.h>
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#include <Interpreters/Cluster.h>
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#include <Interpreters/InterpreterFactory.h>
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#include <Interpreters/InterpreterExistsQuery.h>
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#include <Interpreters/InterpreterShowCreateQuery.h>
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#include <Interpreters/InterpreterDropQuery.h>
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#include <Interpreters/InterpreterCreateQuery.h>
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#include <Columns/ColumnString.h>
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#include <Columns/ColumnsNumber.h>
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#include <DataTypes/DataTypeString.h>
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#include <DataTypes/NestedUtils.h>
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#include <Parsers/ParserCreateQuery.h>
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#include <Parsers/parseQuery.h>
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#include <Parsers/ParserQuery.h>
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#include <Parsers/ASTCreateQuery.h>
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#include <Parsers/queryToString.h>
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#include <Parsers/ASTDropQuery.h>
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#include <Parsers/ASTLiteral.h>
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#include <Parsers/ASTExpressionList.h>
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#include <Formats/FormatSettings.h>
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#include <DataStreams/RemoteBlockInputStream.h>
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#include <DataStreams/SquashingBlockInputStream.h>
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#include <DataStreams/AsynchronousBlockInputStream.h>
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#include <DataStreams/copyData.h>
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#include <DataStreams/NullBlockOutputStream.h>
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#include <IO/ConnectionTimeouts.h>
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#include <IO/Operators.h>
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#include <IO/ReadBufferFromString.h>
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#include <IO/ReadBufferFromFile.h>
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#include <Functions/registerFunctions.h>
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#include <TableFunctions/registerTableFunctions.h>
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#include <AggregateFunctions/registerAggregateFunctions.h>
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#include <Storages/registerStorages.h>
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#include <Storages/StorageDistributed.h>
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#include <Dictionaries/registerDictionaries.h>
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#include <Disks/registerDisks.h>
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#include <Databases/DatabaseMemory.h>
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#include "Aliases.h"
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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 LOGICAL_ERROR;
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}
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ConfigurationPtr getConfigurationFromXMLString(const std::string & xml_data);
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String getQuotedTable(const String & database, const String & table);
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String getQuotedTable(const DatabaseAndTableName & db_and_table);
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enum class TaskState
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{
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Started = 0,
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Finished,
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Unknown
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};
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/// Used to mark status of shard partition tasks
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struct TaskStateWithOwner
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{
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TaskStateWithOwner() = default;
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TaskStateWithOwner(TaskState state_, const String & owner_) : state(state_), owner(owner_) {}
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TaskState state{TaskState::Unknown};
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String owner;
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static String getData(TaskState state, const String &owner)
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{
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return TaskStateWithOwner(state, owner).toString();
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}
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String toString()
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{
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WriteBufferFromOwnString wb;
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wb << static_cast<UInt32>(state) << "\n" << escape << owner;
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return wb.str();
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}
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static TaskStateWithOwner fromString(const String & data)
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{
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ReadBufferFromString rb(data);
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TaskStateWithOwner res;
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UInt32 state;
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rb >> state >> "\n" >> escape >> res.owner;
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if (state >= static_cast<int>(TaskState::Unknown))
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throw Exception("Unknown state " + data, ErrorCodes::LOGICAL_ERROR);
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res.state = static_cast<TaskState>(state);
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return res;
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}
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};
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struct ShardPriority
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{
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UInt8 is_remote = 1;
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size_t hostname_difference = 0;
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UInt8 random = 0;
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static bool greaterPriority(const ShardPriority & current, const ShardPriority & other)
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{
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return std::forward_as_tuple(current.is_remote, current.hostname_difference, current.random)
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< std::forward_as_tuple(other.is_remote, other.hostname_difference, other.random);
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}
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};
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/// Execution status of a task.
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/// Is used for: partition copying task status, partition piece copying task status, partition moving task status.
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enum class TaskStatus
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{
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Active,
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Finished,
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Error,
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};
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struct MultiTransactionInfo
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{
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int32_t code;
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Coordination::Requests requests;
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Coordination::Responses responses;
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};
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// Creates AST representing 'ENGINE = Distributed(cluster, db, table, [sharding_key])
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std::shared_ptr<ASTStorage> createASTStorageDistributed(
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const String & cluster_name, const String & database, const String & table,
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const ASTPtr & sharding_key_ast = nullptr);
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BlockInputStreamPtr squashStreamIntoOneBlock(const BlockInputStreamPtr & stream);
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Block getBlockWithAllStreamData(const BlockInputStreamPtr & stream);
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bool isExtendedDefinitionStorage(const ASTPtr & storage_ast);
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ASTPtr extractPartitionKey(const ASTPtr & storage_ast);
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/*
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* Choosing a Primary Key that Differs from the Sorting Key
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* It is possible to specify a primary key (an expression with values that are written in the index file for each mark)
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* that is different from the sorting key (an expression for sorting the rows in data parts).
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* In this case the primary key expression tuple must be a prefix of the sorting key expression tuple.
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* This feature is helpful when using the SummingMergeTree and AggregatingMergeTree table engines.
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* In a common case when using these engines, the table has two types of columns: dimensions and measures.
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* Typical queries aggregate values of measure columns with arbitrary GROUP BY and filtering by dimensions.
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* Because SummingMergeTree and AggregatingMergeTree aggregate rows with the same value of the sorting key,
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* it is natural to add all dimensions to it. As a result, the key expression consists of a long list of columns
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* and this list must be frequently updated with newly added dimensions.
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* In this case it makes sense to leave only a few columns in the primary key that will provide efficient
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* range scans and add the remaining dimension columns to the sorting key tuple.
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* ALTER of the sorting key is a lightweight operation because when a new column is simultaneously added t
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* o the table and to the sorting key, existing data parts don't need to be changed.
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* Since the old sorting key is a prefix of the new sorting key and there is no data in the newly added column,
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* the data is sorted by both the old and new sorting keys at the moment of table modification.
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*
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* */
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ASTPtr extractPrimaryKey(const ASTPtr & storage_ast);
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ASTPtr extractOrderBy(const ASTPtr & storage_ast);
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Names extractPrimaryKeyColumnNames(const ASTPtr & storage_ast);
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bool isReplicatedTableEngine(const ASTPtr & storage_ast);
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ShardPriority getReplicasPriority(const Cluster::Addresses & replicas, const std::string & local_hostname, UInt8 random);
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}
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