d0ca09a925
Although we don't yet support the DynamoDB API's backup features (see issue #5063), we can already implement the DescribeContinuousBackups operation. It should just say that continuous backups, and point-in-time restores, and disabled. This will be useful for client code which tries to inquire about continuous backups, even if not planning to use them in practice (e.g., see issue #10660). Refs #5063 Refs #10660 Signed-off-by: Nadav Har'El <nyh@scylladb.com>
94 lines
3.6 KiB
C++
94 lines
3.6 KiB
C++
/*
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* Copyright 2019-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include <seastar/http/httpd.hh>
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#include "seastarx.hh"
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namespace alternator {
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// api_error contains a DynamoDB error message to be returned to the user.
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// It can be returned by value (see executor::request_return_type) or thrown.
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// The DynamoDB's error messages are described in detail in
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// https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Programming.Errors.html
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// An error message has an HTTP code (almost always 400), a type, e.g.,
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// "ResourceNotFoundException", and a human readable message.
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// Eventually alternator::api_handler will convert a returned or thrown
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// api_error into a JSON object, and that is returned to the user.
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class api_error final : public std::exception {
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public:
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using status_type = httpd::reply::status_type;
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status_type _http_code;
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std::string _type;
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std::string _msg;
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api_error(std::string type, std::string msg, status_type http_code = status_type::bad_request)
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: _http_code(std::move(http_code))
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, _type(std::move(type))
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, _msg(std::move(msg))
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{ }
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// Factory functions for some common types of DynamoDB API errors
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static api_error validation(std::string msg) {
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return api_error("ValidationException", std::move(msg));
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}
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static api_error resource_not_found(std::string msg) {
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return api_error("ResourceNotFoundException", std::move(msg));
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}
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static api_error resource_in_use(std::string msg) {
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return api_error("ResourceInUseException", std::move(msg));
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}
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static api_error invalid_signature(std::string msg) {
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return api_error("InvalidSignatureException", std::move(msg));
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}
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static api_error missing_authentication_token(std::string msg) {
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return api_error("MissingAuthenticationTokenException", std::move(msg));
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}
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static api_error unrecognized_client(std::string msg) {
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return api_error("UnrecognizedClientException", std::move(msg));
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}
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static api_error unknown_operation(std::string msg) {
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return api_error("UnknownOperationException", std::move(msg));
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}
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static api_error access_denied(std::string msg) {
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return api_error("AccessDeniedException", std::move(msg));
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}
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static api_error conditional_check_failed(std::string msg) {
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return api_error("ConditionalCheckFailedException", std::move(msg));
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}
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static api_error expired_iterator(std::string msg) {
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return api_error("ExpiredIteratorException", std::move(msg));
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}
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static api_error trimmed_data_access_exception(std::string msg) {
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return api_error("TrimmedDataAccessException", std::move(msg));
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}
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static api_error request_limit_exceeded(std::string msg) {
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return api_error("RequestLimitExceeded", std::move(msg));
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}
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static api_error serialization(std::string msg) {
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return api_error("SerializationException", std::move(msg));
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}
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static api_error table_not_found(std::string msg) {
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return api_error("TableNotFoundException", std::move(msg));
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}
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static api_error internal(std::string msg) {
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return api_error("InternalServerError", std::move(msg), reply::status_type::internal_server_error);
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}
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// Provide the "std::exception" interface, to make it easier to print this
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// exception in log messages. Note that this function is *not* used to
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// format the error to send it back to the client - server.cc has
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// generate_error_reply() to format an api_error as the DynamoDB protocol
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// requires.
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virtual const char* what() const noexcept override;
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mutable std::string _what_string;
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};
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}
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