93 lines
2.2 KiB
Go
93 lines
2.2 KiB
Go
package chains
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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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"strconv"
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"time"
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)
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const (
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aptosCoreContractAddress = "0x5bc11445584a763c1fa7ed39081f1b920954da14e04b32440cba863d03e19625"
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)
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type aptosEvent struct {
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Version uint64 `json:"version,string"`
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}
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type aptosTx struct {
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Timestamp uint64 `json:"timestamp,string"`
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Sender string `json:"sender"`
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Hash string `json:"hash"`
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}
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func fetchAptosTx(
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ctx context.Context,
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rateLimiter *time.Ticker,
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baseUrl string,
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txHash string,
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) (*TxDetail, error) {
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// Parse the Aptos event creation number
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creationNumber, err := strconv.ParseUint(txHash, 16, 64)
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if err != nil {
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return nil, fmt.Errorf("failed to parse event creation number from Aptos tx hash: %w", err)
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}
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// Get the event from the Aptos node API.
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var events []aptosEvent
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{
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// Build the URI for the events endpoint
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uri := fmt.Sprintf("%s/v1/accounts/%s/events/%s::state::WormholeMessageHandle/event?start=%d&limit=1",
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baseUrl,
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aptosCoreContractAddress,
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aptosCoreContractAddress,
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creationNumber,
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)
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// Query the events endpoint
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body, err := httpGet(ctx, rateLimiter, uri)
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if err != nil {
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return nil, fmt.Errorf("failed to query events endpoint: %w", err)
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}
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// Deserialize the response
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err = json.Unmarshal(body, &events)
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if err != nil {
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return nil, fmt.Errorf("failed to parse response body from events endpoint: %w", err)
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}
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}
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if len(events) == 0 {
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return nil, ErrTransactionNotFound
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} else if len(events) > 1 {
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return nil, fmt.Errorf("expected exactly one event, but got %d", len(events))
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}
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// Get the transaction
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var tx aptosTx
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{
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// Build the URI for the events endpoint
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uri := fmt.Sprintf("%s/v1/transactions/by_version/%d", baseUrl, events[0].Version)
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// Query the events endpoint
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body, err := httpGet(ctx, rateLimiter, uri)
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if err != nil {
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return nil, fmt.Errorf("failed to query transactions endpoint: %w", err)
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}
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// Deserialize the response
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err = json.Unmarshal(body, &tx)
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if err != nil {
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return nil, fmt.Errorf("failed to parse response body from transactions endpoint: %w", err)
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}
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}
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// Build the result struct and return
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TxDetail := TxDetail{
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NativeTxHash: tx.Hash,
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From: tx.Sender,
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}
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return &TxDetail, nil
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}
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