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MPT metadata sample code: add lookup/decoding to example

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mDuo13
2025-08-21 14:53:24 -07:00
parent 6c16fa1611
commit 01f835c351
2 changed files with 46 additions and 12 deletions
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30
_code-samples/issue-mpt-with-metadata/js/issue-mpt-with-metadata.js
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@@ -1,4 +1,4 @@
import { stringToHex } from '@xrplf/isomorphic/dist/utils/index.js'
import { stringToHex, hexToString } from '@xrplf/isomorphic/dist/utils/index.js'
import { MPTokenIssuanceCreateFlags, Client } from 'xrpl'
// Connect to network and get a wallet
@@ -55,13 +55,31 @@ const mpt_issuance_create = {
// Prepare, sign, and submit the transaction
console.log('Sending MPTokenIssuanceCreate transaction...')
const result = await client.submitAndWait(mpt_issuance_create, { wallet, autofill: true })
const submit_response = await client.submitAndWait(mpt_issuance_create, { wallet, autofill: true })
// Check transaction results and disconnect
console.log(JSON.stringify(result, null, 2))
if (result.result.meta.TransactionResult === 'tesSUCCESS') {
const issuance_id = result.result.meta.mpt_issuance_id
console.log(`MPToken created successfully with issuance ID ${issuance_id}.`)
console.log(JSON.stringify(submit_response, null, 2))
if (submit_response.result.meta.TransactionResult !== 'tesSUCCESS') {
const result_code = response.result.meta.TransactionResult
console.warn(`Transaction failed with result code ${result_code}.`)
process.exit(1)
}
const issuance_id = submit_response.result.meta.mpt_issuance_id
console.log(`MPToken created successfully with issuance ID ${issuance_id}.`)
// Look up MPT Issuance entry in the validated ledger
console.log('Confirming MPT Issuance metadata in the validated ledger.')
const ledger_entry_response = await client.request({
"command": "ledger_entry",
"mpt_issuance": issuance_id,
"ledger_index": "validated"
})
// Decode the metadata
const metadata_blob = ledger_entry_response.result.node.MPTokenMetadata
const decoded_metadata = JSON.parse(hexToString(metadata_blob))
console.log('Decoded metadata:', decoded_metadata)
client.disconnect()

28
_code-samples/issue-mpt-with-metadata/py/issue-mpt-with-metadata.py
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@@ -1,9 +1,9 @@
import json
from xrpl.utils import str_to_hex
from xrpl.utils import str_to_hex, hex_to_str
from xrpl.clients import JsonRpcClient
from xrpl.wallet import generate_faucet_wallet
from xrpl.transaction import submit_and_wait
from xrpl.models.transactions import MPTokenIssuanceCreate, MPTokenIssuanceCreateFlag
from xrpl.models import LedgerEntry, MPTokenIssuanceCreate, MPTokenIssuanceCreateFlag
# Set up client and get a wallet
client = JsonRpcClient("https://s.devnet.rippletest.net:51234")
@@ -60,7 +60,23 @@ print("Sending MPTokenIssuanceCreate transaction...")
response = submit_and_wait(mpt_issuance_create, client, wallet, autofill=True)
print(json.dumps(response.result, indent=2))
# Check transaction results and disconnect
if response.result["meta"]["TransactionResult"] == "tesSUCCESS":
issuance_id = response.result["meta"]["mpt_issuance_id"]
print(f"MPToken successfully created with issuance ID {issuance_id}")
# Check transaction results
result_code = response.result["meta"]["TransactionResult"]
if result_code != "tesSUCCESS":
print(f"Transaction failed with result code {result_code}")
exit(1)
issuance_id = response.result["meta"]["mpt_issuance_id"]
print(f"MPToken successfully created with issuance ID {issuance_id}")
# Look up MPT Issuance entry in the validated ledger
print("Confirming MPT Issuance metadata in the validated ledger.")
ledger_entry_response = client.request(LedgerEntry(
mpt_issuance=issuance_id,
ledger_index="validated"
))
# Decode the metadata
metadata_blob = ledger_entry_response.result["node"]["MPTokenMetadata"]
decoded_metadata = json.loads(hex_to_str(metadata_blob))
print("Decoded metadata:", decoded_metadata)