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104 lines
3.6 KiB
C++
104 lines
3.6 KiB
C++
#include "Storages/StorageS3Cluster.h"
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#include "config.h"
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#if USE_AWS_S3
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#include <DataTypes/DataTypeString.h>
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#include <IO/ConnectionTimeouts.h>
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#include <Interpreters/AddDefaultDatabaseVisitor.h>
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#include <Interpreters/InterpreterSelectQuery.h>
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#include <Processors/Sources/RemoteSource.h>
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#include <Processors/Transforms/AddingDefaultsTransform.h>
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#include <QueryPipeline/RemoteQueryExecutor.h>
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#include <Storages/IStorage.h>
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#include <Storages/StorageURL.h>
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#include <Storages/SelectQueryInfo.h>
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#include <Storages/StorageDictionary.h>
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#include <Storages/extractTableFunctionArgumentsFromSelectQuery.h>
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#include <Storages/VirtualColumnUtils.h>
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#include <Common/Exception.h>
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#include <Parsers/queryToString.h>
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#include <TableFunctions/TableFunctionS3Cluster.h>
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#include <memory>
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#include <string>
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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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StorageS3Cluster::StorageS3Cluster(
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const String & cluster_name_,
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const StorageS3::Configuration & configuration_,
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const StorageID & table_id_,
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const ColumnsDescription & columns_,
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const ConstraintsDescription & constraints_,
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ContextPtr context_,
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bool structure_argument_was_provided_)
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: IStorageCluster(cluster_name_, table_id_, &Poco::Logger::get("StorageS3Cluster (" + table_id_.table_name + ")"), structure_argument_was_provided_)
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, s3_configuration{configuration_}
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{
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context_->getGlobalContext()->getRemoteHostFilter().checkURL(configuration_.url.uri);
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context_->getGlobalContext()->getHTTPHeaderFilter().checkHeaders(configuration_.headers_from_ast);
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StorageInMemoryMetadata storage_metadata;
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updateConfigurationIfChanged(context_);
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if (columns_.empty())
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{
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/// `format_settings` is set to std::nullopt, because StorageS3Cluster is used only as table function
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auto columns = StorageS3::getTableStructureFromDataImpl(s3_configuration, /*format_settings=*/std::nullopt, context_);
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storage_metadata.setColumns(columns);
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}
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else
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storage_metadata.setColumns(columns_);
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storage_metadata.setConstraints(constraints_);
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setInMemoryMetadata(storage_metadata);
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virtual_columns = VirtualColumnUtils::getPathAndFileVirtualsForStorage(storage_metadata.getSampleBlock().getNamesAndTypesList());
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}
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void StorageS3Cluster::addColumnsStructureToQuery(ASTPtr & query, const String & structure, const ContextPtr & context)
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{
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ASTExpressionList * expression_list = extractTableFunctionArgumentsFromSelectQuery(query);
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if (!expression_list)
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throw Exception(ErrorCodes::LOGICAL_ERROR, "Expected SELECT query from table function s3Cluster, got '{}'", queryToString(query));
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TableFunctionS3Cluster::addColumnsStructureToArguments(expression_list->children, structure, context);
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}
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void StorageS3Cluster::updateConfigurationIfChanged(ContextPtr local_context)
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{
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s3_configuration.update(local_context);
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}
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RemoteQueryExecutor::Extension StorageS3Cluster::getTaskIteratorExtension(ASTPtr query, const ContextPtr & context) const
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{
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auto iterator = std::make_shared<StorageS3Source::DisclosedGlobIterator>(
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*s3_configuration.client, s3_configuration.url, query, virtual_columns, context, nullptr, s3_configuration.request_settings, context->getFileProgressCallback());
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auto callback = std::make_shared<std::function<String()>>([iterator]() mutable -> String
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{
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if (auto next = iterator->next())
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return next->key;
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return "";
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});
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return RemoteQueryExecutor::Extension{ .task_iterator = std::move(callback) };
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}
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NamesAndTypesList StorageS3Cluster::getVirtuals() const
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{
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return virtual_columns;
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}
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}
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#endif
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