ErrorCodes.h

/**
 * Copyright (c) 2014-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
#pragma once

#include <wdt/WdtConfig.h>

#include <string>

namespace facebook {
namespace wdt {

// For now just does regular check, for some library embedding may consider
// skipping or being DCHECK
#define WDT_CHECK CHECK
#define WDT_CHECK_EQ CHECK_EQ
#define WDT_CHECK_NE CHECK_NE
#define WDT_CHECK_LE CHECK_LE
#define WDT_CHECK_LT CHECK_LT
#define WDT_CHECK_GE CHECK_GE
#define WDT_CHECK_GT CHECK_GT
// Note : All the new errors should be defined at the end
#define ERRORS                                                            \
  X(OK)                      /** No error  */                             \
  X(ERROR)                   /** Generic error  */                        \
  X(ABORT)                   /** Abort */                                 \
  X(CONN_ERROR)              /** Connection Error */                      \
  X(CONN_ERROR_RETRYABLE)    /** Retryable connection error  */           \
  X(SOCKET_READ_ERROR)       /** Socket read error  */                    \
  X(SOCKET_WRITE_ERROR)      /** Socket write error  */                   \
  X(BYTE_SOURCE_READ_ERROR)  /** Byte source(file) read error  */         \
  X(FILE_WRITE_ERROR)        /** file write error  */                     \
  X(MEMORY_ALLOCATION_ERROR) /** Memory allocation failure  */            \
  X(PROTOCOL_ERROR)          /** WDT protocol error  */                   \
  X(VERSION_MISMATCH)        /** Sender and Receiver version mismatch */  \
  X(ID_MISMATCH)             /** Sender and Receiver id mismatch*/        \
  X(CHECKSUM_MISMATCH)       /** Checksums do not match */                \
  X(RESOURCE_NOT_FOUND)      /** Not found in the resource controller */  \
  X(ABORTED_BY_APPLICATION)  /** Transfer was aborted by application */   \
  X(VERSION_INCOMPATIBLE)    /** Sender/receiver version incompatible */  \
  X(NOT_FOUND)               /** Not found in the resource controller */  \
  X(QUOTA_EXCEEDED)          /** Quota exceeded in resource controller */ \
  X(FEWER_PORTS)             /** Couldn't listen on all the ports */      \
  X(URI_PARSE_ERROR)         /** Wdt uri passed couldn't be parsed*/

enum ErrorCode {
#define X(A) A,
  ERRORS
#undef X
};

std::string const kErrorToStr[] = {
#define X(A) #A,
    ERRORS
#undef X
};

/**
 * returns string description of an error code
 *
 * @param code  error-code
 * @return      string representation
 */
std::string errorCodeToStr(ErrorCode code);

/**
 * Thread safe version of strerror(), easier than strerror_r
 * (similar to folly::errnoStr() but without pulling in all the dependencies)
 */
std::string strerrorStr(int errnum);
}
}
#undef ERRORS