Search transaction in Algorand with Go

Search Transaction with Golang

package main

import (
    "context"
    "encoding/json"
    "fmt"
    "os"
    "strings"

    "github.com/algorand/go-algorand-sdk/client/v2/common"
    "github.com/algorand/go-algorand-sdk/client/v2/indexer"
)

// here we use purestake api, 
const (
    APIEndpoint string = "https://testnet-algorand.api.purestake.io/idx2"
    APIToken    string = "<your token>"
)

func main() {
    client, _ := common.MakeClientWithHeaders(
        APIEndpoint,
        "X-API-Key",
        APIToken,
        nil,
    )

    if len(os.Args) < 2 {
        fmt.Println("Missing txn id parameter")
        return
    }

    // get the txnid to search from command line
    txnId := os.Args[1]
    indexerClient := indexer.Client(*client)
    txnFinder := indexerClient.LookupTransaction(txnId)
    resp, err := txnFinder.Do(context.TODO())
    if err != nil {
        fmt.Println(err)
        return
    }
    sender := resp.Transaction.Sender
    recver := resp.Transaction.PaymentTransaction.Receiver
    note := resp.Transaction.Note
    fmt.Println("Sender:", sender)
    fmt.Println("Recver:", recver)
    fmt.Println("Note:", string(note))
    fmt.Println(strings.Repeat("=", 20))
    txn, _ := json.MarshalIndent(resp.Transaction, "", "  ")
    fmt.Println(string(txn))
}

Run it:

$ go run main.go <txnid to search>

Result:

Sender: ZJHG3Z4CRJ4DOEPA5UYFMDWWYY6MA2VSMRM5DHUEQJBNPO2FP2PEKYA43Y
Recver: BOF4NLVXWDKIE7M27BYTKGE76SK26HGOMX7F6RMZIFEBL3VDVUDHIWPPMI
Note: sha256 hash
====================
{
  "application-transaction": {
    "global-state-schema": {},
    "local-state-schema": {}
  },
  "asset-config-transaction": {
    "params": {}
  },
  "asset-freeze-transaction": {},
  "asset-transfer-transaction": {},
  "confirmed-round": 13904215,
  "fee": 1000,
  "first-valid": 13904212,
  "genesis-hash": "SGO1GKSzyE7IEPItTxCByw9x8FmnrCDexi9/cOUJOiI=",
  "id": "<txnid>",
  "keyreg-transaction": {},
  "last-valid": 13905212,
  "note": "c2hhMjU2IGhhc2g=",
  "payment-transaction": {
    "receiver": "BOF4NLVXWDKIE7M27BYTKGE76SK26HGOMX7F6RMZIFEBL3VDVUDHIWPPMI"
  },
  "receiver-rewards": 15219,
  "round-time": 1619979036,
  "sender": "ZJHG3Z4CRJ4DOEPA5UYFMDWWYY6MA2VSMRM5DHUEQJBNPO2FP2PEKYA43Y",
  "sender-rewards": 49484,
  "signature": {
    "logicsig": {
      "multisig-signature": {}
    },
    "multisig": {},
    "sig": "jHbHlhrIhDoOBe59Lw9jKxbs98D6Tc+an47RAd9EfsIYZlqFvnWeiwAdm1RMO2cQDeu0LAwiBvTutFW26IFjDA=="
  },
  "tx-type": "pay"
}