rocksdb/util/status.cc

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// Copyright (c) 2013, 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.
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include <stdio.h>
#include "port/port.h"
#include "rocksdb/status.h"
namespace rocksdb {
const char* Status::CopyState(const char* state) {
uint32_t size;
memcpy(&size, state, sizeof(size));
char* result = new char[size + 4];
memcpy(result, state, size + 4);
return result;
}
Status::Status(Code code, const Slice& msg, const Slice& msg2) :
code_(code) {
assert(code != kOk);
const uint32_t len1 = msg.size();
const uint32_t len2 = msg2.size();
const uint32_t size = len1 + (len2 ? (2 + len2) : 0);
char* result = new char[size + 4];
memcpy(result, &size, sizeof(size));
memcpy(result + 4, msg.data(), len1);
if (len2) {
result[4 + len1] = ':';
result[5 + len1] = ' ';
memcpy(result + 6 + len1, msg2.data(), len2);
}
state_ = result;
}
std::string Status::ToString() const {
char tmp[30];
const char* type;
switch (code_) {
case kOk:
return "OK";
case kNotFound:
type = "NotFound: ";
break;
case kCorruption:
type = "Corruption: ";
break;
case kNotSupported:
type = "Not implemented: ";
break;
case kInvalidArgument:
type = "Invalid argument: ";
break;
case kIOError:
type = "IO error: ";
break;
case kMergeInProgress:
type = "Merge in progress: ";
break;
case kIncomplete:
type = "Result incomplete: ";
break;
case kShutdownInProgress:
type = "Shutdown in progress: ";
break;
default:
snprintf(tmp, sizeof(tmp), "Unknown code(%d): ",
static_cast<int>(code()));
type = tmp;
break;
}
std::string result(type);
if (state_ != nullptr) {
uint32_t length;
memcpy(&length, state_, sizeof(length));
result.append(state_ + 4, length);
}
return result;
}
} // namespace rocksdb