Comments (4)
collincusce
commented on July 24, 2024
What are these bytes and where did you get them? When I try to parse them using Tx.fromBuffer() I get different messages.
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federicospini
commented on July 24, 2024
Examples are OperationTxs on X-Chain. Bytes come from getTx API of avalanchego and they are CB58-encoded.
Here follows the whole stacktrace for Example n.1 and n.2:
Error: Error - NBytes.fromBuffer: Error: Buffer length must be 20 bytes. Only have 6 remaining in buffer.
at Address.fromBuffer (/home/XXX/parsetx/node_modules/avalanche/dist/common/nbytes.js:81:19)
at SECPTransferOutput.fromBuffer (/home/XXX/parsetx/node_modules/avalanche/dist/common/output.js:242:27)
at SECPTransferOutput.fromBuffer (/home/XXX/parsetx/node_modules/avalanche/dist/common/output.js:404:22)
at SECPMintOperation.fromBuffer (/home/XXX/parsetx/node_modules/avalanche/dist/apis/avm/ops.js:308:34)
at TransferableOperation.fromBuffer (/home/XXX/parsetx/node_modules/avalanche/dist/apis/avm/ops.js:202:31)
at OperationTx.fromBuffer (/home/XXX/parsetx/node_modules/avalanche/dist/apis/avm/operationtx.js:91:25)
at UnsignedTx.fromBuffer (/home/XXX/parsetx/node_modules/avalanche/dist/apis/avm/tx.js:75:33)
at Tx.fromBuffer (/home/XXX/parsetx/node_modules/avalanche/dist/apis/avm/tx.js:120:34)
at main (/home/XXX/parsetx/index.js:28:23)
at processTicksAndRejections (internal/process/task_queues.js:93:5)
Here follows the whole stacktrace for Example n.3:
Error: Error - SelectCredentialClass: unknown credid 0
at Object.exports.SelectCredentialClass (/home/XXX/parsetx/node_modules/avalanche/dist/apis/avm/credentials.js:35:11)
at Tx.fromBuffer (/home/XXX/parsetx/node_modules/avalanche/dist/apis/avm/tx.js:127:40)
at main (/home/XXX/parsetx/index.js:28:23)
at processTicksAndRejections (internal/process/task_queues.js:93:5
The issue is that SECPMintOperation has a single TransferOutput (as reported here https://github.com/ava-labs/avalanchego/blob/master/vms/avm/vm.go#L1053), but here https://github.com/ava-labs/avalanchejs/blob/master/src/apis/avm/ops.ts#L323 a list of TransferOutputs is parsed.
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collincusce
commented on July 24, 2024
Great!! Thanks! I'll work on a patch as my next priority after what I'm currently on.
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cgcardona
commented on July 24, 2024
This has been resolved. You can parse the bytes like so
import { BinTools, Buffer } from "../../src"
import {
Tx,
} from "../../src/apis/avm"
const bintools: BinTools = BinTools.getInstance()
const bytes: string = "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"
const bytesBuf: Buffer = bintools.cb58Decode(bytes)
const main = async (): Promise<any> => {
const tx: Tx = new Tx()
tx.fromBuffer(bytesBuf)
console.log(tx)
}
main()from avalanchejs.
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