积分与余额账务系统硬切重构
This commit is contained in:
@@ -0,0 +1,562 @@
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<?php
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/**
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* @package AKSRT
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*/
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namespace AKSRT\Ledger;
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defined('ABSPATH') || exit;
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final class LedgerService {
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private const MAX_ATTEMPTS = 3;
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private static ?self $instance = null;
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private bool $transaction_active = false;
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/** @var array<int,callable> */
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private array $after_commit_callbacks = [];
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private function __construct() {}
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public static function get_instance(): self {
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if (self::$instance === null) {
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self::$instance = new self();
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}
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return self::$instance;
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}
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public function transaction_active(): bool {
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return $this->transaction_active;
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}
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public function after_commit(callable $callback): bool {
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if (!$this->transaction_active) {
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return false;
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}
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$this->after_commit_callbacks[] = $callback;
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return true;
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}
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public function balance(int $user_id, AssetType|string $asset): int {
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global $wpdb;
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if ($user_id <= 0) {
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return 0;
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}
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$asset = AssetType::from_value($asset);
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$table = $this->table('asset_account');
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return max(0, (int) $wpdb->get_var($wpdb->prepare(
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"SELECT balance_minor FROM {$table} WHERE user_id = %d AND asset = %s",
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$user_id,
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$asset->value
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)));
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}
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public function balance_decimal(int $user_id): string {
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return AssetAmount::from_minor(AssetType::BALANCE, $this->balance($user_id, AssetType::BALANCE))->decimal();
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}
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public function format_balance(int $minor): string {
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return AssetAmount::from_minor(AssetType::BALANCE, max(0, $minor))->formatted();
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}
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public function result_for_operation(string $operation_key): ?LedgerResult {
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global $wpdb;
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if ($operation_key === '' || strlen($operation_key) > 191) {
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return null;
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}
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$transaction_id = (int) $wpdb->get_var($wpdb->prepare(
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"SELECT id FROM {$this->table('asset_transaction')} WHERE operation_key = %s LIMIT 1",
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$operation_key
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));
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return $transaction_id > 0 ? $this->load_result($transaction_id, true) : null;
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}
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/**
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* @param array<string,mixed> $ref
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* @param array<string,mixed> $metadata
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*/
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public function credit(
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int $user_id,
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AssetType|string $asset,
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int $amount_minor,
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string $operation_key,
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string $reason,
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array $ref = [],
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string $remark = '',
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int $actor_user_id = 0,
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array $metadata = [],
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?callable $business_mutation = null,
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?callable $guard = null
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) {
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try {
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$asset = AssetType::from_value($asset);
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} catch (\ValueError $e) {
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return new \WP_Error('aksrt_ledger_asset', __('资产类型无效', 'aksrt'), ['status' => 400]);
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}
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if ($amount_minor <= 0) {
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return new \WP_Error('aksrt_ledger_amount', __('入账金额必须大于零', 'aksrt'), ['status' => 400]);
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}
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return $this->post(new LedgerCommand(
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$operation_key,
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sanitize_key($reason),
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[[
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'user_id' => $user_id,
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'asset' => $asset->value,
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'delta_minor' => $amount_minor,
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'entry_type' => 'credit',
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'remark' => $remark,
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]],
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$this->ref_type($ref),
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$this->ref_key($ref),
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$actor_user_id,
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$metadata
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), $guard, $business_mutation);
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}
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/**
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* @param array<string,mixed> $ref
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* @param array<string,mixed> $metadata
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*/
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public function debit(
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int $user_id,
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AssetType|string $asset,
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int $amount_minor,
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string $operation_key,
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string $reason,
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array $ref = [],
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string $remark = '',
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int $actor_user_id = 0,
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array $metadata = [],
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?callable $business_mutation = null,
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?callable $guard = null
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) {
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try {
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$asset = AssetType::from_value($asset);
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} catch (\ValueError $e) {
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return new \WP_Error('aksrt_ledger_asset', __('资产类型无效', 'aksrt'), ['status' => 400]);
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}
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if ($amount_minor <= 0) {
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return new \WP_Error('aksrt_ledger_amount', __('扣减金额必须大于零', 'aksrt'), ['status' => 400]);
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}
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return $this->post(new LedgerCommand(
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$operation_key,
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sanitize_key($reason),
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[[
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'user_id' => $user_id,
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'asset' => $asset->value,
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'delta_minor' => -$amount_minor,
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'entry_type' => 'debit',
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'remark' => $remark,
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]],
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$this->ref_type($ref),
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$this->ref_key($ref),
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$actor_user_id,
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$metadata
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), $guard, $business_mutation);
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}
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/**
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* @param array<string,mixed> $ref
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* @param array<string,mixed> $metadata
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*/
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public function transfer(
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int $sender_id,
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int $recipient_id,
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AssetType|string $asset,
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int $gross_minor,
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int $fee_minor,
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string $operation_key,
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string $reason,
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array $ref = [],
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string $sender_remark = '',
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string $recipient_remark = '',
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array $metadata = []
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) {
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try {
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$asset = AssetType::from_value($asset);
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} catch (\ValueError $e) {
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return new \WP_Error('aksrt_ledger_asset', __('资产类型无效', 'aksrt'), ['status' => 400]);
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}
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if ($sender_id <= 0 || $recipient_id <= 0 || $sender_id === $recipient_id || $gross_minor <= 0 || $fee_minor < 0 || $fee_minor >= $gross_minor) {
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return new \WP_Error('aksrt_ledger_transfer', __('转账参数无效', 'aksrt'), ['status' => 400]);
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}
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return $this->post(LedgerCommand::transfer(
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$operation_key,
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sanitize_key($reason),
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$sender_id,
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$recipient_id,
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$asset,
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$gross_minor,
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$fee_minor,
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$this->ref_type($ref),
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$this->ref_key($ref),
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$sender_remark,
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$recipient_remark,
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$metadata
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));
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}
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/**
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* @param array<string,mixed> $ref
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* @param array<string,mixed> $metadata
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*/
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public function exchange(
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int $user_id,
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int $balance_minor,
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int $points,
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string $operation_key,
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string $reason,
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array $ref = [],
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string $remark = '',
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array $metadata = [],
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?callable $guard = null,
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?callable $business_mutation = null
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) {
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if ($user_id <= 0 || $balance_minor <= 0 || $points <= 0) {
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return new \WP_Error('aksrt_ledger_exchange', __('兑换参数无效', 'aksrt'), ['status' => 400]);
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}
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return $this->post(new LedgerCommand(
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$operation_key,
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sanitize_key($reason),
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[
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['user_id' => $user_id, 'asset' => AssetType::BALANCE->value, 'delta_minor' => -$balance_minor, 'entry_type' => 'exchange_out', 'remark' => $remark],
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['user_id' => $user_id, 'asset' => AssetType::POINTS->value, 'delta_minor' => $points, 'entry_type' => 'exchange_in', 'remark' => $remark],
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],
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$this->ref_type($ref),
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$this->ref_key($ref),
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$user_id,
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$metadata
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), $guard, $business_mutation);
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}
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/**
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* @param null|callable(int,array<int,array<string,int>>):(true|\WP_Error) $guard
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* @param null|callable(int,LedgerResult):(true|\WP_Error) $business_mutation
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* @return LedgerResult|\WP_Error
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*/
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public function post(LedgerCommand $command, ?callable $guard = null, ?callable $business_mutation = null) {
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if ($this->transaction_active) {
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return new \WP_Error('aksrt_ledger_nested', __('账务事务内禁止再次提交账务', 'aksrt'), ['status' => 500]);
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}
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$valid = $command->validate();
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if (is_wp_error($valid)) {
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return $valid;
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}
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$payload_hash = $command->payload_hash();
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for ($attempt = 1; $attempt <= self::MAX_ATTEMPTS; $attempt++) {
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$result = $this->attempt_post($command, $payload_hash, $guard, $business_mutation);
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if (!is_wp_error($result) || $result->get_error_code() !== 'aksrt_ledger_retry') {
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return $result;
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}
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usleep(random_int(10000, 50000));
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}
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return new \WP_Error('aksrt_ledger_db', __('账务处理失败，请稍后重试', 'aksrt'), ['status' => 500]);
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}
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private function attempt_post(LedgerCommand $command, string $payload_hash, ?callable $guard, ?callable $business_mutation) {
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global $wpdb;
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$account_table = $this->table('asset_account');
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$transaction_table = $this->table('asset_transaction');
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$entry_table = $this->table('asset_entry');
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$created_at = self::utc_now();
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if ($wpdb->query('START TRANSACTION') === false) {
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return new \WP_Error('aksrt_ledger_db', __('无法开启账务事务', 'aksrt'), ['status' => 500]);
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}
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$this->transaction_active = true;
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$this->after_commit_callbacks = [];
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try {
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$inserted = $wpdb->insert($transaction_table, [
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'operation_key' => $command->operation_key,
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'payload_hash' => $payload_hash,
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'reason' => $command->reason,
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'ref_type' => $command->ref_type !== '' ? sanitize_key($command->ref_type) : null,
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'ref_key' => $command->ref_key !== '' ? substr(sanitize_text_field($command->ref_key), 0, 191) : null,
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'actor_user_id' => max(0, $command->actor_user_id),
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'metadata' => $command->metadata !== [] ? wp_json_encode($command->metadata, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES) : null,
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'ip' => self::client_ip(),
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'ua' => self::client_ua(),
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'created_at' => $created_at,
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], ['%s', '%s', '%s', '%s', '%s', '%d', '%s', '%s', '%s', '%s']);
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if ($inserted !== 1) {
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$errno = $this->last_db_errno();
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$wpdb->query('ROLLBACK');
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$this->transaction_active = false;
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$this->after_commit_callbacks = [];
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$existing = $this->replay($command->operation_key, $payload_hash);
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if ($existing !== null) {
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return $existing;
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}
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return $this->db_error($errno);
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}
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$transaction_id = (int) $wpdb->insert_id;
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$account_keys = [];
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foreach ($command->entries as $entry) {
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$key = (string) $entry['asset'] . ':' . (int) $entry['user_id'];
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$account_keys[$key] = ['user_id' => (int) $entry['user_id'], 'asset' => (string) $entry['asset']];
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}
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$account_keys = array_values($account_keys);
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usort($account_keys, static function (array $left, array $right): int {
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$asset_order = strcmp((string) $left['asset'], (string) $right['asset']);
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return $asset_order !== 0
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? $asset_order
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: ((int) $left['user_id'] <=> (int) $right['user_id']);
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});
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foreach ($account_keys as $account) {
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$wpdb->query($wpdb->prepare(
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"INSERT IGNORE INTO {$account_table} (user_id, asset, balance_minor, version, updated_at) VALUES (%d, %s, 0, 0, %s)",
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$account['user_id'],
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$account['asset'],
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$created_at
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));
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}
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$balances = [];
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foreach ($account_keys as $account) {
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$minor = $wpdb->get_var($wpdb->prepare(
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"SELECT balance_minor FROM {$account_table} WHERE user_id = %d AND asset = %s FOR UPDATE",
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$account['user_id'],
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$account['asset']
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));
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if ($minor === null) {
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throw new \RuntimeException('asset_account_lock_failed');
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}
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$balances[$account['user_id']][$account['asset']] = (int) $minor;
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}
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if ($guard !== null) {
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$guard_result = $guard($transaction_id, $balances);
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if (is_wp_error($guard_result)) {
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if ($this->is_retryable_errno($this->last_db_errno())) {
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throw new \RuntimeException('ledger_guard_lock_failed');
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}
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throw new LedgerAbort($guard_result);
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}
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if ($guard_result !== true) {
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throw new \RuntimeException('ledger_guard_failed');
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}
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}
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$projected_balances = $balances;
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$prepared_entries = [];
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foreach ($command->entries as $index => $entry) {
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$user_id = (int) $entry['user_id'];
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$asset = (string) $entry['asset'];
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$delta = (int) $entry['delta_minor'];
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$before = (int) $projected_balances[$user_id][$asset];
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if ($delta > 0 && $before > PHP_INT_MAX - $delta) {
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throw new LedgerAbort(new \WP_Error('aksrt_ledger_overflow', __('资产余额超出可用范围', 'aksrt'), ['status' => 400]));
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}
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$after = $before + $delta;
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if ($after < 0) {
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$code = $asset === AssetType::POINTS->value ? 'aksrt_points_insufficient' : 'aksrt_balance_insufficient';
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throw new LedgerAbort(new \WP_Error($code, $asset === AssetType::POINTS->value ? __('积分不足', 'aksrt') : __('余额不足', 'aksrt'), [
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'status' => 402,
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'balance_minor' => $before,
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'required_minor' => abs($delta),
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]));
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}
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$projected_balances[$user_id][$asset] = $after;
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$prepared_entries[] = [
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'transaction_id' => $transaction_id,
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'line_no' => $index + 1,
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'user_id' => $user_id,
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'asset' => $asset,
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'entry_type' => sanitize_key((string) ($entry['entry_type'] ?? 'adjustment')),
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'delta_minor' => $delta,
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'balance_after_minor' => $after,
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'counterparty_user_id' => max(0, (int) ($entry['counterparty_user_id'] ?? 0)) ?: null,
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'remark' => !empty($entry['remark']) ? substr(sanitize_text_field((string) $entry['remark']), 0, 255) : null,
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'created_at' => $created_at,
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];
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}
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foreach ($account_keys as $account) {
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$user_id = (int) $account['user_id'];
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$asset = (string) $account['asset'];
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$updated = $wpdb->query($wpdb->prepare(
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"UPDATE {$account_table} SET balance_minor = %d, version = version + 1, updated_at = %s WHERE user_id = %d AND asset = %s",
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(int) $projected_balances[$user_id][$asset],
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$created_at,
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$user_id,
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$asset
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));
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if ($updated !== 1) {
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throw new \RuntimeException('asset_account_update_failed');
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}
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}
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$written_entries = [];
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foreach ($prepared_entries as $entry_row) {
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if ($wpdb->insert($entry_table, $entry_row, ['%d', '%d', '%d', '%s', '%s', '%d', '%d', '%d', '%s', '%s']) !== 1) {
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throw new \RuntimeException('asset_entry_insert_failed');
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}
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$written_entries[] = array_merge(['id' => (int) $wpdb->insert_id], $entry_row);
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}
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$result = new LedgerResult($transaction_id, false, $written_entries, $projected_balances);
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if ($business_mutation !== null) {
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$mutation_result = $business_mutation($transaction_id, $result);
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if (is_wp_error($mutation_result)) {
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if ($this->is_retryable_errno($this->last_db_errno())) {
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throw new \RuntimeException('ledger_business_lock_failed');
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}
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throw new LedgerAbort($mutation_result);
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}
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if ($mutation_result !== true) {
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throw new \RuntimeException('ledger_business_mutation_failed');
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}
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}
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if ($wpdb->query('COMMIT') === false) {
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throw new \RuntimeException('ledger_commit_failed');
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}
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$after_commit_callbacks = $this->after_commit_callbacks;
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$this->after_commit_callbacks = [];
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$this->transaction_active = false;
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try {
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do_action('aksrt_asset_transaction_committed', $result, $command);
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} catch (\Throwable $event_error) {
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if (defined('WP_DEBUG') && WP_DEBUG) {
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error_log('[AKSRT Ledger Event] ' . $event_error->getMessage());
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}
|
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}
|
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foreach ($after_commit_callbacks as $callback) {
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try {
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$callback();
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} catch (\Throwable $event_error) {
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if (defined('WP_DEBUG') && WP_DEBUG) {
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error_log('[AKSRT Ledger After Commit] ' . $event_error->getMessage());
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}
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}
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}
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return $result;
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} catch (LedgerAbort $e) {
|
||||
$wpdb->query('ROLLBACK');
|
||||
$this->clean_rolled_back_user_caches($command);
|
||||
$this->transaction_active = false;
|
||||
$this->after_commit_callbacks = [];
|
||||
return $e->error;
|
||||
} catch (\Throwable $e) {
|
||||
$errno = $this->last_db_errno();
|
||||
$wpdb->query('ROLLBACK');
|
||||
$this->clean_rolled_back_user_caches($command);
|
||||
$this->transaction_active = false;
|
||||
$this->after_commit_callbacks = [];
|
||||
return $this->db_error($errno, $e->getMessage());
|
||||
}
|
||||
}
|
||||
|
||||
private function replay(string $operation_key, string $payload_hash) {
|
||||
global $wpdb;
|
||||
$transaction_table = $this->table('asset_transaction');
|
||||
$row = $wpdb->get_row($wpdb->prepare(
|
||||
"SELECT id, payload_hash FROM {$transaction_table} WHERE operation_key = %s",
|
||||
$operation_key
|
||||
), ARRAY_A);
|
||||
if (!is_array($row)) {
|
||||
return null;
|
||||
}
|
||||
if (!hash_equals((string) $row['payload_hash'], $payload_hash)) {
|
||||
return new \WP_Error('aksrt_ledger_idempotency_conflict', __('相同操作标识已用于其他账务请求', 'aksrt'), ['status' => 409]);
|
||||
}
|
||||
return $this->load_result((int) $row['id'], true);
|
||||
}
|
||||
|
||||
private function load_result(int $transaction_id, bool $replayed): LedgerResult {
|
||||
global $wpdb;
|
||||
$entry_table = $this->table('asset_entry');
|
||||
$entries = $wpdb->get_results($wpdb->prepare(
|
||||
"SELECT * FROM {$entry_table} WHERE transaction_id = %d ORDER BY line_no ASC",
|
||||
$transaction_id
|
||||
), ARRAY_A);
|
||||
$balances = [];
|
||||
foreach ((array) $entries as &$entry) {
|
||||
foreach (['id', 'transaction_id', 'line_no', 'user_id', 'delta_minor', 'balance_after_minor', 'counterparty_user_id'] as $field) {
|
||||
$entry[$field] = (int) ($entry[$field] ?? 0);
|
||||
}
|
||||
$balances[$entry['user_id']][(string) $entry['asset']] = $entry['balance_after_minor'];
|
||||
}
|
||||
unset($entry);
|
||||
return new LedgerResult($transaction_id, $replayed, (array) $entries, $balances);
|
||||
}
|
||||
|
||||
private function db_error(int $errno, string $detail = ''): \WP_Error {
|
||||
if ($this->is_retryable_errno($errno)) {
|
||||
return new \WP_Error('aksrt_ledger_retry', __('账务事务发生锁冲突', 'aksrt'), ['status' => 409]);
|
||||
}
|
||||
if (defined('WP_DEBUG') && WP_DEBUG && $detail !== '') {
|
||||
error_log('[AKSRT Ledger] ' . $detail);
|
||||
}
|
||||
return new \WP_Error('aksrt_ledger_db', __('账务数据库写入失败', 'aksrt'), ['status' => 500]);
|
||||
}
|
||||
|
||||
private function is_retryable_errno(int $errno): bool {
|
||||
return in_array($errno, [1205, 1213], true);
|
||||
}
|
||||
|
||||
private function clean_rolled_back_user_caches(LedgerCommand $command): void {
|
||||
if (!function_exists('clean_user_cache')) {
|
||||
return;
|
||||
}
|
||||
$user_ids = [];
|
||||
foreach ($command->entries as $entry) {
|
||||
$user_id = (int) ($entry['user_id'] ?? 0);
|
||||
if ($user_id > 0) {
|
||||
$user_ids[$user_id] = $user_id;
|
||||
}
|
||||
}
|
||||
foreach ($user_ids as $user_id) {
|
||||
clean_user_cache($user_id);
|
||||
}
|
||||
}
|
||||
|
||||
private function last_db_errno(): int {
|
||||
global $wpdb;
|
||||
if (isset($wpdb->dbh) && $wpdb->dbh instanceof \mysqli) {
|
||||
return mysqli_errno($wpdb->dbh);
|
||||
}
|
||||
if (isset($wpdb->last_errno)) {
|
||||
return (int) $wpdb->last_errno;
|
||||
}
|
||||
if (preg_match('/\\b(1205|1213)\\b/', (string) ($wpdb->last_error ?? ''), $matches)) {
|
||||
return (int) $matches[1];
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/** @param array<string,mixed> $ref */
|
||||
private function ref_type(array $ref): string {
|
||||
return sanitize_key((string) ($ref['type'] ?? ''));
|
||||
}
|
||||
|
||||
/** @param array<string,mixed> $ref */
|
||||
private function ref_key(array $ref): string {
|
||||
foreach (['key', 'order', 'id', 'ref_id'] as $field) {
|
||||
if (isset($ref[$field]) && (string) $ref[$field] !== '') {
|
||||
return (string) $ref[$field];
|
||||
}
|
||||
}
|
||||
return '';
|
||||
}
|
||||
|
||||
private function table(string $name): string {
|
||||
return \AKSRT\Core\DBMigrator::table($name);
|
||||
}
|
||||
|
||||
private static function utc_now(): string {
|
||||
return (new \DateTimeImmutable('now', new \DateTimeZone('UTC')))->format('Y-m-d H:i:s.u');
|
||||
}
|
||||
|
||||
private static function client_ip(): ?string {
|
||||
$ip = function_exists('aksrt_get_client_ip') ? (string) aksrt_get_client_ip() : (string) ($_SERVER['REMOTE_ADDR'] ?? '');
|
||||
$ip = substr(sanitize_text_field(wp_unslash($ip)), 0, 64);
|
||||
return $ip !== '' ? $ip : null;
|
||||
}
|
||||
|
||||
private static function client_ua(): ?string {
|
||||
$ua = substr(sanitize_text_field(wp_unslash((string) ($_SERVER['HTTP_USER_AGENT'] ?? ''))), 0, 255);
|
||||
return $ua !== '' ? $ua : null;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user