103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
package mysql
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import (
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"context"
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"math"
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"strings"
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mysqlDriver "github.com/go-sql-driver/mysql"
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"hyapp/pkg/appcode"
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"hyapp/pkg/xerr"
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)
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func contextWithCommandApp(ctx context.Context, value string) context.Context {
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if strings.TrimSpace(value) == "" {
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return appcode.WithContext(ctx, appcode.FromContext(ctx))
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}
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return appcode.WithContext(ctx, value)
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}
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func normalizedEntryAppCode(ctx context.Context, value string) string {
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if strings.TrimSpace(value) == "" {
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return appcode.FromContext(ctx)
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}
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return appcode.Normalize(value)
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}
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func checkedMul(unit int64, count int64) (int64, error) {
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if unit < 0 || count <= 0 {
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return 0, xerr.New(xerr.InvalidArgument, "amount is invalid")
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}
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if unit != 0 && count > math.MaxInt64/unit {
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return 0, xerr.New(xerr.InvalidArgument, "amount overflow")
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}
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return unit * count, nil
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}
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func checkedAdd(left int64, right int64) (int64, error) {
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if right < 0 || left > math.MaxInt64-right {
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return 0, xerr.New(xerr.CoinSellerStockAmountInvalid, "coin amount overflow")
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}
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return left + right, nil
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}
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func checkedAddDelta(left int64, right int64) (int64, error) {
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if (right > 0 && left > math.MaxInt64-right) || (right < 0 && left < math.MinInt64-right) {
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return 0, xerr.New(xerr.CoinSellerStockAmountInvalid, "coin amount overflow")
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}
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return left + right, nil
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}
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func stableHash(value string) string {
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sum := sha256.Sum256([]byte(value))
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return hex.EncodeToString(sum[:])
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}
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// boundedDerivedCommandID 为内部子动作保留可读前缀，同时保证最终键不超过所有
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// command_id VARCHAR(128) 的共同边界。正常短键保持历史值，极长客户端键才稳定收敛为哈希。
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func boundedDerivedCommandID(prefix string, commandID string) string {
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commandID = strings.TrimSpace(commandID)
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derived := prefix + commandID
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if len(derived) <= 128 {
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return derived
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}
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return prefix + stableHash(commandID)
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}
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func mustJSON(value any) string {
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body, err := json.Marshal(value)
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if err != nil {
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return "{}"
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}
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return string(body)
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}
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func transactionID(appCode string, commandID string) string {
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return "wtx_" + stableHash(appcode.Normalize(appCode)+"|"+commandID)
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}
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func coinSellerStockID(appCode string, commandID string) string {
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return "cstock_" + stableHash(appcode.Normalize(appCode)+"|"+commandID)
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}
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func billingReceiptID(appCode string, commandID string) string {
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return "bill_" + stableHash(appcode.Normalize(appCode)+"|"+commandID)
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}
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func eventID(transactionID string, eventType string, userID int64, assetType string) string {
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return "wev_" + stableHash(fmt.Sprintf("%s|%s|%d|%s", transactionID, eventType, userID, assetType))
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}
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func isMySQLDuplicateError(err error) bool {
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var mysqlErr *mysqlDriver.MySQLError
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return errors.As(err, &mysqlErr) && mysqlErr.Number == 1062
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}
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