-
Notifications
You must be signed in to change notification settings - Fork 8
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
3 changed files
with
130 additions
and
5 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,7 +1,113 @@ | ||
#pragma once | ||
#include <memory> | ||
#include <iostream> | ||
|
||
struct TLogEntry { | ||
int Term = 1; | ||
int Size = 0; | ||
#include <stdint.h> | ||
#include <typeinfo> | ||
|
||
enum class EMessageType : uint32_t { | ||
NONE = 0, | ||
LOG_ENTRY = 1, | ||
REQUEST_VOTE_REQUEST = 2, | ||
}; | ||
|
||
struct TMessage { | ||
static constexpr EMessageType MessageType = EMessageType::NONE; | ||
uint32_t Type; | ||
uint32_t Len; | ||
char Value[0]; | ||
}; | ||
|
||
struct TLogEntry: public TMessage { | ||
static constexpr EMessageType MessageType = EMessageType::LOG_ENTRY; | ||
uint64_t Term = 1; | ||
char Data[0]; | ||
}; | ||
|
||
struct RequestVoteRequest: public TMessage { | ||
static constexpr EMessageType MessageType = EMessageType::REQUEST_VOTE_REQUEST; | ||
uint64_t Term; | ||
uint64_t LastLogIndex; | ||
uint64_t LastLogTerm; | ||
uint32_t Src; | ||
uint32_t Dst; | ||
uint32_t CandidateId; | ||
}; | ||
|
||
template<typename T> | ||
requires std::derived_from<T, TMessage> | ||
struct TMessageHolder { | ||
T* Mes; | ||
std::shared_ptr<char[]> RawData; | ||
|
||
template<typename U> | ||
requires std::derived_from<U, T> | ||
TMessageHolder(U* u, const std::shared_ptr<char[]>& rawData) | ||
: Mes(u) | ||
, RawData(rawData) | ||
{ } | ||
|
||
template<typename U> | ||
requires std::derived_from<U, T> | ||
TMessageHolder(const TMessageHolder<U>& other) | ||
: Mes(other.Mes) | ||
, RawData(other.RawData) | ||
{ } | ||
|
||
T* operator->() { | ||
return Mes; | ||
} | ||
|
||
template<typename U> | ||
requires std::derived_from<U, T> | ||
TMessageHolder<U> Cast() { | ||
return TMessageHolder<U>(static_cast<U*>(Mes), RawData); | ||
} | ||
|
||
template<typename U> | ||
requires std::derived_from<U, T> | ||
auto Maybe() { | ||
struct Maybe { | ||
U* Mes; | ||
std::shared_ptr<char[]> RawData; | ||
|
||
operator bool() const { | ||
return Mes != nullptr; | ||
} | ||
|
||
TMessageHolder<U> Cast() { | ||
if (Mes) { | ||
return TMessageHolder<U>(Mes, RawData); | ||
} | ||
throw std::bad_cast(); | ||
} | ||
}; | ||
|
||
U* dst = Mes->Type == static_cast<uint32_t>(U::MessageType) | ||
? static_cast<U*>(dst) | ||
: nullptr; | ||
|
||
return Maybe { | ||
.Mes = dst, | ||
.RawData = RawData | ||
}; | ||
} | ||
}; | ||
|
||
template<typename T> | ||
requires std::derived_from<T, TMessage> | ||
T* NewMessage(uint32_t type, uint32_t len) { | ||
char* data = new char[len]; | ||
T* mes = reinterpret_cast<T*>(data); | ||
mes->Type = type; | ||
mes->Len = len; | ||
return mes; | ||
} | ||
|
||
template<typename T> | ||
requires std::derived_from<T, TMessage> | ||
TMessageHolder<T> NewHoldedMessage(uint32_t type, uint32_t len) | ||
{ | ||
T* mes = NewMessage<T>(type, len); | ||
return TMessageHolder<T>(mes, std::shared_ptr<char[]>(reinterpret_cast<char*>(mes))); | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters