Navid
68 lines
1.8 KiB
Go
68 lines
1.8 KiB
Go
package ledger
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import (
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"fmt"
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"time"
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)
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type SettlementStatus string
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const (
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SettlementPending SettlementStatus = "PENDING"
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SettlementSubmitted SettlementStatus = "SUBMITTED"
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SettlementConfirmed SettlementStatus = "CONFIRMED"
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SettlementRetryable SettlementStatus = "RETRYABLE"
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SettlementManualReview SettlementStatus = "MANUAL_REVIEW"
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)
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type Settlement struct {
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ID string
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SourceService string
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SourceTxID string
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IdempotencyKey string
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Status SettlementStatus
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Network string
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TransactionHash string
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Attempts int
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AvailableAt time.Time
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LastError string
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SignedTransactionXDR string
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}
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type SettlementStats struct {
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Pending int64
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Retryable int64
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ManualReview int64
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OldestPendingSeconds int64
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}
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func (s Settlement) Validate() error {
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if s.ID == "" || s.SourceService == "" || s.SourceTxID == "" || s.IdempotencyKey == "" {
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return fmt.Errorf("settlement identity fields are required")
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}
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if s.Status != SettlementPending && s.Status != SettlementSubmitted && s.Status != SettlementConfirmed && s.Status != SettlementRetryable && s.Status != SettlementManualReview {
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return fmt.Errorf("invalid settlement status %q", s.Status)
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}
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if s.Attempts < 0 || s.AvailableAt.IsZero() {
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return fmt.Errorf("invalid settlement retry state")
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}
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return nil
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}
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func (s Settlement) Retry(now time.Time, maxAttempts int, err error) Settlement {
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s.LastError = err.Error()
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s.Status = SettlementRetryable
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if maxAttempts > 0 && s.Attempts >= maxAttempts {
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s.Status = SettlementManualReview
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}
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delay := time.Second
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for i := 1; i < s.Attempts && delay < 15*time.Minute; i++ {
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delay *= 2
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}
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if delay > 15*time.Minute {
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delay = 15 * time.Minute
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}
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s.AvailableAt = now.UTC().Add(delay)
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return s
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}
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