error.hpp

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#pragma once
 
/// @file userver/clients/http/error.hpp
/// @brief HTTP client exception types
 
#include <exception>
#include <string>
#include <string_view>
#include <system_error>
 
#include <userver/clients/http/error_kind.hpp>
#include <userver/clients/http/local_stats.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace clients::http {
 
/// Exception with string
class BaseException : public std::exception {
public:
    BaseException(std::string message, const LocalStats& stats, ErrorKind error_kind)
        : message_(std::move(message)),
          stats_(stats),
          error_kind_(error_kind)
    {}
    ~BaseException() override = default;
 
    const char* what() const noexcept override { return message_.c_str(); }
 
    ErrorKind GetErrorKind() const { return error_kind_; }
 
    const LocalStats& GetStats() const { return stats_; }
 
private:
    std::string message_;
    LocalStats stats_;
    ErrorKind error_kind_;
};
 
/// Exception with string and error_code
class BaseCodeException : public BaseException {
public:
    BaseCodeException(std::error_code ec, std::string_view message, std::string_view url, const LocalStats& stats);
    ~BaseCodeException() override = default;
 
    const std::error_code& error_code() const noexcept { return ec_; }
 
private:
    std::error_code ec_;
};
 
class TimeoutException : public BaseException {
public:
    TimeoutException(std::string_view message, const LocalStats& stats);
    ~TimeoutException() override = default;
};
 
class CancelException : public BaseException {
public:
    using BaseException::BaseException;
    ~CancelException() override = default;
};
 
class SSLException : public BaseCodeException {
public:
    using BaseCodeException::BaseCodeException;
    ~SSLException() override = default;
};
 
class TechnicalError : public BaseCodeException {
public:
    using BaseCodeException::BaseCodeException;
    ~TechnicalError() override = default;
};
 
class BadArgumentException : public BaseCodeException {
public:
    using BaseCodeException::BaseCodeException;
    ~BadArgumentException() override = default;
};
 
class TooManyRedirectsException : public BaseCodeException {
public:
    using BaseCodeException::BaseCodeException;
    ~TooManyRedirectsException() override = default;
};
 
class NetworkProblemException : public BaseCodeException {
public:
    using BaseCodeException::BaseCodeException;
    ~NetworkProblemException() override = default;
};
 
class DNSProblemException : public BaseCodeException {
public:
    using BaseCodeException::BaseCodeException;
    ~DNSProblemException() override = default;
};
 
class AuthFailedException : public BaseCodeException {
public:
    using BaseCodeException::BaseCodeException;
    ~AuthFailedException() override = default;
};
 
/// Base class for HttpClientException and HttpServerException
class HttpException : public BaseException {
public:
    HttpException(int code, const LocalStats& stats, std::string_view message, ErrorKind error_kind);
    ~HttpException() override = default;
 
    int code() const { return code_; }
 
private:
    int code_;
};
 
class HttpClientException : public HttpException {
public:
    HttpClientException(int code, const LocalStats& stats);
    HttpClientException(int code, const LocalStats& stats, std::string_view message);
    ~HttpClientException() override = default;
};
 
class HttpServerException : public HttpException {
public:
    HttpServerException(int code, const LocalStats& stats);
    HttpServerException(int code, const LocalStats& stats, std::string_view message);
    ~HttpServerException() override = default;
};
 
/// map error_code to exceptions
std::exception_ptr PrepareException(std::error_code ec, std::string_view url, const LocalStats& stats);
 
}  // namespace clients::http
 
USERVER_NAMESPACE_END