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two_phase_many.cpp
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#include <cassert>
#include <cstdlib>
#include <fmt/format.h>
#include <tb_client.hpp>
namespace tb = tigerbeetle;
int main() {
auto address = [&]() -> std::string {
const char *env_address = std::getenv("TB_ADDRESS");
if (env_address == nullptr) {
return "3001";
}
std::string_view env_address_view(env_address);
return std::string(env_address_view);
}();
try {
fmt::println("TigerBeetle C++ - Multiple Two Phase [Sample]\n");
fmt::println("Connecting...");
tb::Client client(address);
if (client.currentStatus() != tb::TB_STATUS_SUCCESS) {
fmt::println(stderr, "Failed to initialize tb_client");
return EXIT_FAILURE;
}
// Create two accounts
tb::account<2> accounts;
std::memset(accounts.data(), 0, accounts.size() * sizeof(tb::tb_account_t));
accounts.at(0).id = 1;
accounts.at(0).code = 1;
accounts.at(0).ledger = 1;
accounts.at(1).id = 2;
accounts.at(1).code = 1;
accounts.at(1).ledger = 1;
tb::CompletionContext ctx{};
tb::tb_packet_t packet{};
packet.operation =
tb::TB_OPERATION_CREATE_ACCOUNTS; // The operation to be performed.
packet.data = accounts.data(); // The data to be sent.
packet.data_size = accounts.size() * sizeof(tb::tb_account_t); //
packet.user_data = &ctx; // User-defined context.
packet.status = tb::TB_PACKET_OK; // Will be set when the reply arrives.
fmt::println("Creating accounts...");
client.send_request(packet, &ctx);
if (packet.status != tb::TB_PACKET_OK) {
// Checking if the request failed:
fmt::println(stderr, "Error calling create_accounts (ret={})",
packet.status);
return EXIT_FAILURE;
}
if (ctx.size != 0) {
// Checking for errors creating the accounts:
tb::tb_create_accounts_result_t *results =
reinterpret_cast<tb::tb_create_accounts_result_t *>(ctx.reply.data());
int results_len = ctx.size / sizeof(tb::tb_create_accounts_result_t);
fmt::println("create_account results:");
for (int i = 0; i < results_len; i++) {
fmt::println("index={}, ret={}", results[i].index, results[i].result);
}
return EXIT_FAILURE;
}
fmt::println("Accounts created successfully");
// Start five pending transfers
tb::transfer<5> transfers;
std::memset(transfers.data(), 0,
transfers.size() * sizeof(tb::tb_transfer_t));
transfers.at(0).id = 1;
transfers.at(0).debit_account_id = 1;
transfers.at(0).credit_account_id = 2;
transfers.at(0).code = 1;
transfers.at(0).ledger = 1;
transfers.at(0).amount = 100;
transfers.at(0).flags = tb::TB_TRANSFER_PENDING;
transfers.at(1).id = 2;
transfers.at(1).debit_account_id = 1;
transfers.at(1).credit_account_id = 2;
transfers.at(1).code = 1;
transfers.at(1).ledger = 1;
transfers.at(1).amount = 200;
transfers.at(1).flags = tb::TB_TRANSFER_PENDING;
transfers.at(2).id = 3;
transfers.at(2).debit_account_id = 1;
transfers.at(2).credit_account_id = 2;
transfers.at(2).code = 1;
transfers.at(2).ledger = 1;
transfers.at(2).amount = 300;
transfers.at(2).flags = tb::TB_TRANSFER_PENDING;
transfers.at(3).id = 4;
transfers.at(3).debit_account_id = 1;
transfers.at(3).credit_account_id = 2;
transfers.at(3).code = 1;
transfers.at(3).ledger = 1;
transfers.at(3).amount = 400;
transfers.at(3).flags = tb::TB_TRANSFER_PENDING;
transfers.at(4).id = 5;
transfers.at(4).debit_account_id = 1;
transfers.at(4).credit_account_id = 2;
transfers.at(4).code = 1;
transfers.at(4).ledger = 1;
transfers.at(4).amount = 500;
transfers.at(4).flags = tb::TB_TRANSFER_PENDING;
packet.operation =
tb::TB_OPERATION_CREATE_TRANSFERS; // The operation to be performed.
packet.data = transfers.data(); // The data to be sent.
packet.data_size = transfers.size() * sizeof(tb::tb_transfer_t); //
packet.user_data = &ctx; // User-defined context.
packet.status = tb::TB_PACKET_OK; // Will be set when the reply arrives.
fmt::println("Creating transfers...");
client.send_request(packet, &ctx);
if (packet.status != tb::TB_PACKET_OK) {
// Checking if the request failed:
fmt::println(stderr, "Error calling create_transfers (ret={})",
packet.status);
return EXIT_FAILURE;
}
if (ctx.size != 0) {
// Checking for errors creating the transfers:
tb::tb_create_transfers_result_t *results =
reinterpret_cast<tb::tb_create_transfers_result_t *>(
ctx.reply.data());
int results_len = ctx.size / sizeof(tb::tb_create_transfers_result_t);
fmt::println("create_transfers results:");
for (int i = 0; i < results_len; i++) {
fmt::println("index={}, ret={}", results[i].index, results[i].result);
}
return EXIT_FAILURE;
}
// Validate accounts pending and posted debits/credits before finishing the
// two-phase transfer
tb::accountID<2> ids = {1, 2};
std::memset(accounts.data(), 0, accounts.size() * sizeof(tb::tb_account_t));
packet.operation = tb::TB_OPERATION_LOOKUP_ACCOUNTS;
packet.data = ids.data();
packet.data_size = sizeof(tb::tb_uint128_t) * ids.size();
packet.user_data = &ctx;
packet.status = tb::TB_PACKET_OK;
client.send_request(packet, &ctx);
if (packet.status != tb::TB_PACKET_OK) {
// Checking if the request failed:
fmt::println(stderr, "Error calling lookup_accounts (ret={})",
packet.status);
return EXIT_FAILURE;
}
if (ctx.size != 0) {
// Validate the accounts' pending and posted debits/credits:
tb::tb_account_t *results =
reinterpret_cast<tb::tb_account_t *>(ctx.reply.data());
int results_len = ctx.size / sizeof(tb::tb_account_t);
fmt::println("{} Account(s) found", results_len);
fmt::println("============================================");
for (int i = 0; i < results_len; i++) {
if (results[i].id == 1) {
assert(results[i].debits_posted == 0);
assert(results[i].credits_posted == 0);
assert(results[i].debits_pending == 1500);
assert(results[i].credits_pending == 0);
} else if (results[i].id == 2) {
assert(results[i].debits_posted == 0);
assert(results[i].credits_posted == 0);
assert(results[i].debits_pending == 0);
assert(results[i].credits_pending == 1500);
} else {
fmt::println(stderr, "Unexpected account: {}", results[i].id);
return EXIT_FAILURE;
}
}
}
// Create a 6th transfer posting the 1st transfer
std::memset(transfers.data(), 0,
transfers.size() * sizeof(tb::tb_transfer_t));
transfers.at(0).id = 6;
transfers.at(0).pending_id = 1;
transfers.at(0).debit_account_id = 1;
transfers.at(0).credit_account_id = 2;
transfers.at(0).code = 1;
transfers.at(0).ledger = 1;
transfers.at(0).amount = 100;
transfers.at(0).flags = tb::TB_TRANSFER_POST_PENDING_TRANSFER;
packet.operation =
tb::TB_OPERATION_CREATE_TRANSFERS; // The operation to be performed.
packet.data = transfers.data(); // The data to be sent.
packet.data_size = transfers.size() * sizeof(tb::tb_transfer_t); //
packet.user_data = &ctx; // User-defined context.
packet.status = tb::TB_PACKET_OK; // Will be set when the reply arrives.
fmt::println("Creating transfers...");
client.send_request(packet, &ctx);
if (packet.status != tb::TB_PACKET_OK) {
// Checking if the request failed:
fmt::println(stderr, "Error calling create_transfers (ret={})",
packet.status);
return EXIT_FAILURE;
}
if (ctx.size != 0) {
// Checking for errors creating the transfers:
tb::tb_create_transfers_result_t *results =
reinterpret_cast<tb::tb_create_transfers_result_t *>(
ctx.reply.data());
int results_len = ctx.size / sizeof(tb::tb_create_transfers_result_t);
fmt::println("create_transfers results:");
for (int i = 0; i < results_len; i++) {
fmt::println("index={}, ret={}", results[i].index, results[i].result);
}
} else {
return EXIT_FAILURE;
}
// Validate accounts pending and posted debits/credits after finishing the
// two-phase transfer
std::memset(ids.data(), 0, ids.size() * sizeof(tb::tb_uint128_t));
ids.at(0) = 1;
ids.at(1) = 2;
packet.operation = tb::TB_OPERATION_LOOKUP_ACCOUNTS;
packet.data = ids.data();
packet.data_size = sizeof(tb::tb_uint128_t) * ids.size();
packet.user_data = &ctx;
packet.status = tb::TB_PACKET_OK;
client.send_request(packet, &ctx);
if (packet.status != tb::TB_PACKET_OK) {
// Checking if the request failed:
fmt::println(stderr, "Error calling lookup_accounts (ret={})",
packet.status);
return EXIT_FAILURE;
}
if (ctx.size != 0) {
// Validate the accounts' pending and posted debits/credits:
tb::tb_account_t *results =
reinterpret_cast<tb::tb_account_t *>(ctx.reply.data());
int results_len = ctx.size / sizeof(tb::tb_account_t);
fmt::println("{} Account(s) found", results_len);
fmt::println("============================================");
for (int i = 0; i < results_len; i++) {
if (results[i].id == 1) {
assert(results[i].debits_posted == 100);
assert(results[i].credits_posted == 0);
assert(results[i].debits_pending == 1400);
assert(results[i].credits_pending == 0);
} else if (results[i].id == 2) {
assert(results[i].debits_posted == 0);
assert(results[i].credits_posted == 100);
assert(results[i].debits_pending == 0);
assert(results[i].credits_pending == 1400);
} else {
fmt::println(stderr, "Unexpected account: {}", results[i].id);
return EXIT_FAILURE;
}
}
}
fmt::println("Multiple two-phase transfers completed successfully");
} catch (std::exception &e) {
fmt::println(stderr, "Exception occurred: {}", e.what());
return EXIT_FAILURE;
}
return 0;
}