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🐎 made send funds 30% faster

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This commit is contained in:
EntireTwix 2021-06-19 14:23:39 -07:00
parent f2b7a563d9
commit 31e08aeb97
1 changed files with 58 additions and 47 deletions
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69
src/bank.cpp
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@ -1,6 +1,6 @@
#include "bank.h"
int_fast8_t Bank::AddUser(const std::string &name, const std::string &init_pass)
int_fast8_t Bank::AddUser(const std::string &name, const std::string &init_pass) noexcept
{
if (name.size() > max_name_size)
{
@ -22,7 +22,7 @@ int_fast8_t Bank::AddUser(const std::string &name, const std::string &init_pass)
: ErrorResponse::UserAlreadyExists;
}
}
int_fast8_t Bank::AdminAddUser(const std::string &attempt, std::string &&name, uint32_t init_bal, std::string &&init_pass)
int_fast8_t Bank::AdminAddUser(const std::string &attempt, std::string &&name, uint32_t init_bal, std::string &&init_pass) noexcept
{
if (name.size() > max_name_size)
{
@ -40,7 +40,7 @@ int_fast8_t Bank::AdminAddUser(const std::string &attempt, std::string &&name, u
: ErrorResponse::UserAlreadyExists;
}
}
int_fast8_t Bank::DelUser(const std::string &name, const std::string &attempt)
int_fast8_t Bank::DelUser(const std::string &name, const std::string &attempt) noexcept
{
std::shared_lock<std::shared_mutex> lock{size_l};
bool state = false;
@ -53,7 +53,7 @@ int_fast8_t Bank::DelUser(const std::string &name, const std::string &attempt)
return ErrorResponse::UserNotFound;
}
}
int_fast8_t Bank::AdminDelUser(const std::string &name, const std::string &attempt)
int_fast8_t Bank::AdminDelUser(const std::string &name, const std::string &attempt) noexcept
{
std::shared_lock<std::shared_mutex> lock{size_l};
bool state = false;
@ -67,7 +67,7 @@ int_fast8_t Bank::AdminDelUser(const std::string &name, const std::string &attem
}
}
int_fast8_t Bank::SendFunds(const std::string &a_name, const std::string &b_name, uint32_t amount, const std::string &attempt)
int_fast8_t Bank::SendFunds(const std::string &a_name, const std::string &b_name, uint32_t amount, const std::string &attempt) noexcept
{
//cant send money to self, from self or amount is 0
if (a_name == b_name || !amount)
@ -83,7 +83,7 @@ int_fast8_t Bank::SendFunds(const std::string &a_name, const std::string &b_name
int_fast8_t state = false;
{
std::shared_lock<std::shared_mutex> lock{send_funds_l}; //because SendFunds requires 3 locking operations
if (users.modify_if(a_name, [&state, amount, &attempt](User &a) {
if (!users.modify_if(a_name, [&state, amount, &attempt](User &a) {
//if A exists, A can afford it, and A's password matches
if (a.balance < amount)
{
@ -103,24 +103,29 @@ int_fast8_t Bank::SendFunds(const std::string &a_name, const std::string &b_name
}
}))
{
if (state > 0)
return ErrorResponse::UserNotFound;
}
else
{
//if B does exist
if (users.modify_if(b_name, [amount](User &b) {
b.balance += amount;
}))
if (!state > 0)
{
return state;
}
else
{
if constexpr (max_log_size > 0)
{
Transaction temp(a_name, b_name, amount);
Transaction temp2 = temp;
Transaction temp;
//if B does exist
if (users.modify_if(b_name, [&a_name, &b_name, &temp, amount](User &b) {
temp = Transaction(a_name, b_name, amount);
b.balance += amount;
b.log.AddTrans(std::forward<Transaction>(temp));
}))
{
users.modify_if(a_name, [&temp](User &a) {
a.log.AddTrans(std::move(temp));
});
users.modify_if(b_name, [&temp2](User &b) {
b.log.AddTrans(std::move(temp2));
});
}
return true;
}
else
@ -134,26 +139,32 @@ int_fast8_t Bank::SendFunds(const std::string &a_name, const std::string &b_name
}
else
{
return state;
}
}
else
if (!users.modify_if(b_name, [amount](User &b) {
b.balance += amount;
}))
{
return ErrorResponse::UserNotFound;
//attempt to refund if A exist
users.modify_if(a_name, [amount](User &a) {
a.balance += amount;
});
return ErrorResponse::UserNotFound; //because had to refund transaction
}
}
}
}
}
}
int_fast8_t Bank::Contains(const std::string &name) const
int_fast8_t Bank::Contains(const std::string &name) const noexcept
{
return (users.contains(name)) ? true : ErrorResponse::UserNotFound;
}
int_fast8_t Bank::AdminVerifyPass(const std::string &attempt)
int_fast8_t Bank::AdminVerifyPass(const std::string &attempt) noexcept
{
return (admin_pass == attempt) ? true : ErrorResponse::WrongPassword;
}
int_fast8_t Bank::SetBal(const std::string &name, const std::string &attempt, uint32_t amount)
int_fast8_t Bank::SetBal(const std::string &name, const std::string &attempt, uint32_t amount) noexcept
{
if (admin_pass != attempt)
{
@ -166,7 +177,7 @@ int_fast8_t Bank::SetBal(const std::string &name, const std::string &attempt, ui
? true
: ErrorResponse::UserNotFound;
}
int_fast64_t Bank::GetBal(const std::string &name) const
int_fast64_t Bank::GetBal(const std::string &name) const noexcept
{
int_fast64_t res = ErrorResponse::UserNotFound;
users.if_contains(name, [&res](const User &u) {
@ -175,7 +186,7 @@ int_fast64_t Bank::GetBal(const std::string &name) const
return res;
}
int_fast8_t Bank::VerifyPassword(const std::string &name, const std::string &attempt) const
int_fast8_t Bank::VerifyPassword(const std::string &name, const std::string &attempt) const noexcept
{
int_fast8_t res = ErrorResponse::UserNotFound;
users.if_contains(name, [&res, &attempt](const User &u) {
@ -183,7 +194,7 @@ int_fast8_t Bank::VerifyPassword(const std::string &name, const std::string &att
});
return res;
}
int_fast8_t Bank::ChangePassword(const std::string &name, const std::string &attempt, std::string &&new_pass)
int_fast8_t Bank::ChangePassword(const std::string &name, const std::string &attempt, std::string &&new_pass) noexcept
{
int_fast8_t res = ErrorResponse::UserNotFound;
users.modify_if(name, [&res, &attempt, &new_pass](User &u) {
@ -200,7 +211,7 @@ int_fast8_t Bank::ChangePassword(const std::string &name, const std::string &att
return res;
}
Json::Value Bank::GetLogs(const std::string &name, const std::string &attempt)
Json::Value Bank::GetLogs(const std::string &name, const std::string &attempt) noexcept
{
Json::Value res;
if (!users.if_contains(name, [&res, &attempt](const User &u) {