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Merge pull request #199 from bitcoin-sv/callbacker
Callbacker
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package metamorph | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "log/slog" | ||
| "net/http" | ||
| "strconv" | ||
| "time" | ||
|
|
||
| "github.com/bitcoin-sv/arc/api" | ||
| "github.com/bitcoin-sv/arc/metamorph/metamorph_api" | ||
| "github.com/bitcoin-sv/arc/metamorph/store" | ||
| "github.com/ordishs/go-utils" | ||
| ) | ||
|
|
||
| const ( | ||
| CallbackTries = 5 | ||
| CallbackIntervalSeconds = 5 | ||
| ) | ||
|
|
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| func SendCallback(logger *slog.Logger, s store.MetamorphStore, tx *store.StoreData) { | ||
| sleepDuration := CallbackIntervalSeconds | ||
| for i := 0; i < CallbackTries; i++ { | ||
| statusString := metamorph_api.Status(tx.Status).String() | ||
| blockHash := "" | ||
| if tx.BlockHash != nil { | ||
| blockHash = utils.ReverseAndHexEncodeSlice(tx.BlockHash.CloneBytes()) | ||
| } | ||
|
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| logger.Info("sending callback for transaction", slog.String("token", tx.CallbackToken), slog.String("hash", tx.Hash.String()), slog.String("url", tx.CallbackUrl), slog.Uint64("block height", tx.BlockHeight), slog.String("block hash", blockHash)) | ||
|
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| status := &api.TransactionStatus{ | ||
| BlockHash: &blockHash, | ||
| BlockHeight: &tx.BlockHeight, | ||
| TxStatus: &statusString, | ||
| Txid: tx.Hash.String(), | ||
| Timestamp: time.Now(), | ||
| } | ||
| statusBytes, err := json.Marshal(status) | ||
| if err != nil { | ||
| logger.Error("Couldn't marshal status - ", err) | ||
| return | ||
| } | ||
|
|
||
| var request *http.Request | ||
| request, err = http.NewRequest("POST", tx.CallbackUrl, bytes.NewBuffer(statusBytes)) | ||
| if err != nil { | ||
| logger.Error("Couldn't marshal status - ", errors.Join(err, fmt.Errorf("failed to post callback for transaction id %s", tx.Hash))) | ||
| return | ||
| } | ||
| request.Header.Set("Content-Type", "application/json; charset=UTF-8") | ||
| if tx.CallbackToken != "" { | ||
| request.Header.Set("Authorization", "Bearer "+tx.CallbackToken) | ||
| } | ||
|
|
||
| // default http client | ||
| httpClient := http.Client{ | ||
| Timeout: 5 * time.Second, | ||
| } | ||
|
|
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| var response *http.Response | ||
| response, err = httpClient.Do(request) | ||
| if err != nil { | ||
| logger.Error("Couldn't send transaction info through callback url - ", err) | ||
| continue | ||
| } | ||
| defer response.Body.Close() | ||
|
|
||
| // if callback was sent successfully we stop here | ||
| if response.StatusCode == http.StatusOK { | ||
| err = s.RemoveCallbacker(context.Background(), tx.Hash) | ||
| if err != nil { | ||
| logger.Error("Couldn't update/remove callback url - ", err) | ||
| continue | ||
| } | ||
| return | ||
| } | ||
|
|
||
| logger.Error("callback response status code not ok - ", slog.String("status", strconv.Itoa(response.StatusCode))) | ||
|
|
||
| // sleep before trying again | ||
| time.Sleep(time.Duration(sleepDuration) * time.Second) | ||
| // increase intervals on each failure | ||
| sleepDuration *= 2 | ||
| } | ||
|
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||
| err := s.RemoveCallbacker(context.Background(), tx.Hash) | ||
| if err != nil { | ||
| logger.Error("Couldn't update/remove callback url - ", err) | ||
| return | ||
| } | ||
| logger.Error("Couldn't send transaction info through callback url after tries: ", slog.String("status", strconv.Itoa(CallbackTries))) | ||
| } |
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