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223 lines
8.1 KiB
C++
223 lines
8.1 KiB
C++
#include "TaskTable.h"
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#include "ClusterPartition.h"
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#include "TaskCluster.h"
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#include <Parsers/ASTFunction.h>
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#include <Common/escapeForFileName.h>
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#include <boost/algorithm/string/join.hpp>
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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 UNKNOWN_ELEMENT_IN_CONFIG;
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extern const int LOGICAL_ERROR;
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}
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TaskTable::TaskTable(TaskCluster & parent, const Poco::Util::AbstractConfiguration & config,
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const String & prefix_, const String & table_key)
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: task_cluster(parent)
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{
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String table_prefix = prefix_ + "." + table_key + ".";
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name_in_config = table_key;
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number_of_splits = config.getUInt64(table_prefix + "number_of_splits", 3);
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allow_to_copy_alias_and_materialized_columns = config.getBool(table_prefix + "allow_to_copy_alias_and_materialized_columns", false);
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allow_to_drop_target_partitions = config.getBool(table_prefix + "allow_to_drop_target_partitions", false);
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cluster_pull_name = config.getString(table_prefix + "cluster_pull");
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cluster_push_name = config.getString(table_prefix + "cluster_push");
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table_pull.first = config.getString(table_prefix + "database_pull");
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table_pull.second = config.getString(table_prefix + "table_pull");
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table_push.first = config.getString(table_prefix + "database_push");
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table_push.second = config.getString(table_prefix + "table_push");
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/// Used as node name in ZooKeeper
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table_id = escapeForFileName(cluster_push_name)
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+ "." + escapeForFileName(table_push.first)
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+ "." + escapeForFileName(table_push.second);
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engine_push_str = config.getString(table_prefix + "engine", "rand()");
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{
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ParserStorage parser_storage{ParserStorage::TABLE_ENGINE};
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engine_push_ast = parseQuery(parser_storage, engine_push_str, 0, DBMS_DEFAULT_MAX_PARSER_DEPTH);
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engine_push_partition_key_ast = extractPartitionKey(engine_push_ast);
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primary_key_comma_separated = boost::algorithm::join(extractPrimaryKeyColumnNames(engine_push_ast), ", ");
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is_replicated_table = isReplicatedTableEngine(engine_push_ast);
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}
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sharding_key_str = config.getString(table_prefix + "sharding_key");
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auxiliary_engine_split_asts.reserve(number_of_splits);
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{
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ParserExpressionWithOptionalAlias parser_expression(false);
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sharding_key_ast = parseQuery(parser_expression, sharding_key_str, 0, DBMS_DEFAULT_MAX_PARSER_DEPTH);
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main_engine_split_ast = createASTStorageDistributed(cluster_push_name, table_push.first, table_push.second,
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sharding_key_ast);
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for (const auto piece_number : collections::range(0, number_of_splits))
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{
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auxiliary_engine_split_asts.emplace_back
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(
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createASTStorageDistributed(cluster_push_name, table_push.first,
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table_push.second + "_piece_" + toString(piece_number), sharding_key_ast)
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);
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}
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}
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where_condition_str = config.getString(table_prefix + "where_condition", "");
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if (!where_condition_str.empty())
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{
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ParserExpressionWithOptionalAlias parser_expression(false);
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where_condition_ast = parseQuery(parser_expression, where_condition_str, 0, DBMS_DEFAULT_MAX_PARSER_DEPTH);
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// Will use canonical expression form
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where_condition_str = queryToString(where_condition_ast);
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}
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String enabled_partitions_prefix = table_prefix + "enabled_partitions";
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has_enabled_partitions = config.has(enabled_partitions_prefix);
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if (has_enabled_partitions)
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{
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Strings keys;
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config.keys(enabled_partitions_prefix, keys);
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if (keys.empty())
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{
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/// Parse list of partition from space-separated string
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String partitions_str = config.getString(table_prefix + "enabled_partitions");
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boost::trim_if(partitions_str, isWhitespaceASCII);
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boost::split(enabled_partitions, partitions_str, isWhitespaceASCII, boost::token_compress_on);
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}
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else
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{
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/// Parse sequence of <partition>...</partition>
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for (const String &key : keys)
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{
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if (!startsWith(key, "partition"))
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throw Exception(ErrorCodes::UNKNOWN_ELEMENT_IN_CONFIG, "Unknown key {} in {}", key, enabled_partitions_prefix);
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enabled_partitions.emplace_back(config.getString(enabled_partitions_prefix + "." + key));
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}
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}
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std::copy(enabled_partitions.begin(), enabled_partitions.end(), std::inserter(enabled_partitions_set, enabled_partitions_set.begin()));
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}
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}
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String TaskTable::getPartitionPath(const String & partition_name) const
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{
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return task_cluster.task_zookeeper_path // root
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+ "/tables/" + table_id // tables/dst_cluster.merge.hits
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+ "/" + escapeForFileName(partition_name); // 201701
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}
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String TaskTable::getPartitionAttachIsActivePath(const String & partition_name) const
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{
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return getPartitionPath(partition_name) + "/attach_active";
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}
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String TaskTable::getPartitionAttachIsDonePath(const String & partition_name) const
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{
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return getPartitionPath(partition_name) + "/attach_is_done";
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}
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String TaskTable::getPartitionPiecePath(const String & partition_name, size_t piece_number) const
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{
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assert(piece_number < number_of_splits);
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return getPartitionPath(partition_name) + "/piece_" + toString(piece_number); // 1...number_of_splits
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}
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String TaskTable::getCertainPartitionIsDirtyPath(const String &partition_name) const
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{
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return getPartitionPath(partition_name) + "/is_dirty";
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}
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String TaskTable::getCertainPartitionPieceIsDirtyPath(const String & partition_name, const size_t piece_number) const
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{
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return getPartitionPiecePath(partition_name, piece_number) + "/is_dirty";
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}
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String TaskTable::getCertainPartitionIsCleanedPath(const String & partition_name) const
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{
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return getCertainPartitionIsDirtyPath(partition_name) + "/cleaned";
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}
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String TaskTable::getCertainPartitionPieceIsCleanedPath(const String & partition_name, const size_t piece_number) const
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{
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return getCertainPartitionPieceIsDirtyPath(partition_name, piece_number) + "/cleaned";
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}
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String TaskTable::getCertainPartitionTaskStatusPath(const String & partition_name) const
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{
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return getPartitionPath(partition_name) + "/shards";
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}
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String TaskTable::getCertainPartitionPieceTaskStatusPath(const String & partition_name, const size_t piece_number) const
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{
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return getPartitionPiecePath(partition_name, piece_number) + "/shards";
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}
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bool TaskTable::isReplicatedTable() const
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{
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return is_replicated_table;
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}
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String TaskTable::getStatusAllPartitionCount() const
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{
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return task_cluster.task_zookeeper_path + "/status/all_partitions_count";
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}
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String TaskTable::getStatusProcessedPartitionsCount() const
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{
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return task_cluster.task_zookeeper_path + "/status/processed_partitions_count";
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}
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ASTPtr TaskTable::rewriteReplicatedCreateQueryToPlain() const
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{
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ASTPtr prev_engine_push_ast = engine_push_ast->clone();
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auto & new_storage_ast = prev_engine_push_ast->as<ASTStorage &>();
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auto & new_engine_ast = new_storage_ast.engine->as<ASTFunction &>();
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/// Remove "Replicated" from name
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new_engine_ast.name = new_engine_ast.name.substr(10);
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if (new_engine_ast.arguments)
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{
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auto & replicated_table_arguments = new_engine_ast.arguments->children;
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/// In some cases of Atomic database engine usage ReplicatedMergeTree tables
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/// could be created without arguments.
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if (!replicated_table_arguments.empty())
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{
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/// Delete first two arguments of Replicated...MergeTree() table.
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replicated_table_arguments.erase(replicated_table_arguments.begin());
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replicated_table_arguments.erase(replicated_table_arguments.begin());
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}
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}
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return new_storage_ast.clone();
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}
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ClusterPartition & TaskTable::getClusterPartition(const String & partition_name)
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{
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auto it = cluster_partitions.find(partition_name);
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if (it == cluster_partitions.end())
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throw Exception(ErrorCodes::LOGICAL_ERROR, "There are no cluster partition {} in {}", partition_name, table_id);
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return it->second;
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}
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}
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