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84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
#include "config.h"
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#if USE_AZURE_BLOB_STORAGE
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#include <TableFunctions/TableFunctionAzureBlobStorageCluster.h>
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#include <TableFunctions/TableFunctionFactory.h>
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#include <Interpreters/parseColumnsListForTableFunction.h>
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#include <Storages/StorageAzureBlob.h>
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#include "registerTableFunctions.h"
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#include <memory>
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namespace DB
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{
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StoragePtr TableFunctionAzureBlobStorageCluster::executeImpl(
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const ASTPtr & /*function*/, ContextPtr context,
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const std::string & table_name, ColumnsDescription /*cached_columns*/, bool is_insert_query) const
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{
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StoragePtr storage;
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ColumnsDescription columns;
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if (configuration.structure != "auto")
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{
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columns = parseColumnsListFromString(configuration.structure, context);
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}
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else if (!structure_hint.empty())
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{
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columns = structure_hint;
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}
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auto client = StorageAzureBlob::createClient(configuration, !is_insert_query);
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auto settings = StorageAzureBlob::createSettings(context);
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if (context->getClientInfo().query_kind == ClientInfo::QueryKind::SECONDARY_QUERY)
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{
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/// On worker node this filename won't contains globs
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storage = std::make_shared<StorageAzureBlob>(
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configuration,
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std::make_unique<AzureObjectStorage>(table_name, std::move(client), std::move(settings), configuration.container),
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context,
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StorageID(getDatabaseName(), table_name),
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columns,
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ConstraintsDescription{},
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/* comment */String{},
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/* format_settings */std::nullopt, /// No format_settings
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/* distributed_processing */ true,
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/*partition_by_=*/nullptr);
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}
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else
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{
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storage = std::make_shared<StorageAzureBlobCluster>(
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cluster_name,
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configuration,
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std::make_unique<AzureObjectStorage>(table_name, std::move(client), std::move(settings), configuration.container),
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StorageID(getDatabaseName(), table_name),
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columns,
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ConstraintsDescription{},
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context);
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}
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storage->startup();
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return storage;
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}
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void registerTableFunctionAzureBlobStorageCluster(TableFunctionFactory & factory)
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{
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factory.registerFunction<TableFunctionAzureBlobStorageCluster>(
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{.documentation
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= {.description=R"(The table function can be used to read the data stored on Azure Blob Storage in parallel for many nodes in a specified cluster.)",
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.examples{{"azureBlobStorageCluster", "SELECT * FROM azureBlobStorageCluster(cluster, connection_string|storage_account_url, container_name, blobpath, [account_name, account_key, format, compression, structure])", ""}}},
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.allow_readonly = false}
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);
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}
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}
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#endif
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