Navid
56 lines
1.6 KiB
Go
56 lines
1.6 KiB
Go
package kuknos
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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"strings"
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"gl/domain/ledger"
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)
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// Submitter sends a pre-signed Stellar/Kuknos transaction to Horizon. Signing
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// remains outside GL; GL owns durable admission, retry, and reconciliation.
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type Submitter struct {
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Endpoint string
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Client *http.Client
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}
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func (s Submitter) Submit(ctx context.Context, record ledger.Settlement) (string, error) {
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if s.Endpoint == "" || record.SignedTransactionXDR == "" {
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return "", fmt.Errorf("kuknos submission endpoint and signed xdr are required")
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}
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form := url.Values{"tx": {record.SignedTransactionXDR}}
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, strings.TrimRight(s.Endpoint, "/")+"/transactions", strings.NewReader(form.Encode()))
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if err != nil {
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return "", err
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}
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req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
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client := s.Client
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if client == nil {
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client = http.DefaultClient
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}
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resp, err := client.Do(req)
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if err != nil {
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return "", err
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}
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defer resp.Body.Close()
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var body struct {
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Hash string `json:"hash"`
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Extras struct {
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ResultCodes struct {
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Transaction string `json:"transaction"`
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} `json:"result_codes"`
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} `json:"extras"`
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}
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if err := json.NewDecoder(resp.Body).Decode(&body); err != nil {
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return "", fmt.Errorf("decode kuknos response: %w", err)
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}
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if resp.StatusCode < 200 || resp.StatusCode >= 300 || body.Hash == "" {
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return "", fmt.Errorf("kuknos rejected transaction: status=%d code=%s", resp.StatusCode, body.Extras.ResultCodes.Transaction)
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}
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return body.Hash, nil
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}
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