shefali163 commented on code in PR #12914: URL: https://github.com/apache/arrow/pull/12914#discussion_r924782468
########## cpp/src/arrow/filesystem/azurefs.cc: ########## @@ -0,0 +1,1722 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +#include "arrow/filesystem/azurefs.h" + +#include <algorithm> +#include <atomic> +#include <azure/core/credentials/credentials.hpp> +#include <azure/identity/client_secret_credential.hpp> +#include <azure/identity/managed_identity_credential.hpp> +#include <azure/storage/blobs.hpp> +#include <azure/storage/files/datalake.hpp> +#include <chrono> +#include <condition_variable> +#include <functional> +#include <memory> +#include <mutex> +#include <sstream> +#include <thread> +#include <unordered_map> +#include <utility> + +#include "arrow/util/windows_fixup.h" + +#include "arrow/buffer.h" +#include "arrow/filesystem/filesystem.h" +#include "arrow/filesystem/path_util.h" +#include "arrow/filesystem/util_internal.h" +#include "arrow/io/interfaces.h" +#include "arrow/io/memory.h" +#include "arrow/io/util_internal.h" +#include "arrow/result.h" +#include "arrow/status.h" +#include "arrow/util/async_generator.h" +#include "arrow/util/atomic_shared_ptr.h" +#include "arrow/util/checked_cast.h" +#include "arrow/util/future.h" +#include "arrow/util/key_value_metadata.h" +#include "arrow/util/logging.h" +#include "arrow/util/optional.h" +#include "arrow/util/task_group.h" +#include "arrow/util/thread_pool.h" + +namespace arrow { + +using internal::Uri; + +namespace fs { + +static const char kSep = '/'; + +// ----------------------------------------------------------------------- +// AzureOptions implementation + +AzureOptions::AzureOptions() {} + +std::string AzureOptions::GetAccountNameFromConnectionString( + const std::string& connectionString) { + std::map<std::string, std::string> connectionStringMap; + std::string::const_iterator cur = connectionString.begin(); + + while (cur != connectionString.end()) { + auto key_begin = cur; + auto key_end = std::find(cur, connectionString.end(), '='); + std::string key = std::string(key_begin, key_end); + cur = key_end; + if (cur != connectionString.end()) { + ++cur; + } + auto value_begin = cur; + auto value_end = std::find(cur, connectionString.end(), ';'); + std::string value = std::string(value_begin, value_end); + cur = value_end; + if (cur != connectionString.end()) { + ++cur; + } + if (!key.empty() || !value.empty()) { + connectionStringMap[std::move(key)] = std::move(value); + } + } + + auto getWithDefault = [](const std::map<std::string, std::string>& m, + const std::string& key, + const std::string& defaultValue = std::string()) { + auto ite = m.find(key); + return ite == m.end() ? defaultValue : ite->second; + }; + + std::string accountName = getWithDefault(connectionStringMap, "AccountName"); + if (accountName.empty()) { + throw std::runtime_error("Cannot find account name in connection string."); + } + return accountName; +} + +void AzureOptions::ConfigureAnonymousCredentials(const std::string& account_name) { + account_dfs_url = "https://"; + account_name + ".dfs.core.windows.net/"; + account_blob_url = "https://"; + account_name + ".blob.core.windows.net/"; + credentials_kind = AzureCredentialsKind::Anonymous; +} + +void AzureOptions::ConfigureAccountKeyCredentials(const std::string& account_name, + const std::string& account_key) { + account_dfs_url = "https://"; + account_name + ".dfs.core.windows.net/"; + account_blob_url = "https://"; + account_name + ".blob.core.windows.net/"; + storage_credentials_provider = + std::make_shared<Azure::Storage::StorageSharedKeyCredential>(account_name, + account_key); + credentials_kind = AzureCredentialsKind::StorageCredentials; +} + +void AzureOptions::ConfigureConnectionStringCredentials( + const std::string& connection_string_uri) { + auto account_name = GetAccountNameFromConnectionString(connection_string_uri); Review Comment: It parses an Azure Blob Storage connection string, https://docs.microsoft.com/en-us/azure/storage/common/storage-configure-connection-string -- This is an automated message from the Apache Git Service. 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