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https://github.com/XRPLF/xrpl-dev-portal.git
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bc0c698692
- Updates MPT Concept docs with metadata schema - Updates issue-mpt-with-metdata example code with new schema changes.
86 lines
2.7 KiB
JavaScript
86 lines
2.7 KiB
JavaScript
import { stringToHex, hexToString } from '@xrplf/isomorphic/dist/utils/index.js'
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import { MPTokenIssuanceCreateFlags, Client } from 'xrpl'
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// Connect to network and get a wallet
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const client = new Client('wss://s.devnet.rippletest.net:51233')
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await client.connect()
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console.log('Funding new wallet from faucet...')
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const { wallet } = await client.fundWallet()
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// Define metadata as JSON
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const mpt_metadata = {
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t: 'TBILL',
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n: 'T-Bill Yield Token',
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d: 'A yield-bearing stablecoin backed by short-term U.S. Treasuries and money market instruments.',
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i: 'https://example.org/tbill-icon.png',
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ac: 'rwa',
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as: 'treasury',
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in: 'Example Yield Co.',
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us: [
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{
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u: 'https://exampleyield.co/tbill',
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c: 'website',
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t: 'Product Page'
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},
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{
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u: 'https://exampleyield.co/docs',
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c: 'docs',
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t: 'Yield Token Docs'
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}
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],
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ai: {
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interest_rate: '5.00%',
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interest_type: 'variable',
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yield_source: 'U.S. Treasury Bills',
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maturity_date: '2045-06-30',
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cusip: '912796RX0'
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}
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}
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// Convert JSON to a string (without excess whitespace), then string to hex
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const mpt_metadata_hex = stringToHex(JSON.stringify(mpt_metadata))
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// Define the transaction, including other MPT parameters
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const mpt_issuance_create = {
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TransactionType: 'MPTokenIssuanceCreate',
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Account: wallet.address,
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AssetScale: 4,
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MaximumAmount: '50000000',
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TransferFee: 0,
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Flags: MPTokenIssuanceCreateFlags.tfMPTCanTransfer |
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MPTokenIssuanceCreateFlags.tfMPTCanTrade,
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MPTokenMetadata: mpt_metadata_hex
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}
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// Prepare, sign, and submit the transaction
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console.log('Sending MPTokenIssuanceCreate transaction...')
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const submit_response = await client.submitAndWait(mpt_issuance_create, { wallet, autofill: true })
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// Check transaction results and disconnect
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console.log(JSON.stringify(submit_response, null, 2))
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if (submit_response.result.meta.TransactionResult !== 'tesSUCCESS') {
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const result_code = response.result.meta.TransactionResult
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console.warn(`Transaction failed with result code ${result_code}.`)
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process.exit(1)
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}
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const issuance_id = submit_response.result.meta.mpt_issuance_id
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console.log(`MPToken created successfully with issuance ID ${issuance_id}.`)
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// Look up MPT Issuance entry in the validated ledger
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console.log('Confirming MPT Issuance metadata in the validated ledger.')
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const ledger_entry_response = await client.request({
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"command": "ledger_entry",
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"mpt_issuance": issuance_id,
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"ledger_index": "validated"
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})
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// Decode the metadata
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const metadata_blob = ledger_entry_response.result.node.MPTokenMetadata
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const decoded_metadata = JSON.parse(hexToString(metadata_blob))
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console.log('Decoded metadata:', decoded_metadata)
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client.disconnect()
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