Files
xrpl-dev-portal/_code-samples/escrow/js/list-escrows.js

115 lines
3.6 KiB
JavaScript

import { Client, dropsToXrp, rippleTimeToISOTime } from 'xrpl'
// Set up client and address
const address = 'rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn'
console.log('Connecting to Mainnet...')
const client = new Client('wss://xrplcluster.com/')
await client.connect()
// Look up the official close time of the validated ledger ---------------------
const ledger = await client.request({
command: 'ledger',
ledger_index: 'validated'
})
if (ledger.error) {
console.error(`Error looking up validated ledger: ${ledger.error}`)
client.disconnect()
process.exit(1)
}
const close_time = ledger.result.ledger.close_time
const ledger_hash = ledger.result.ledger.ledger_hash
// Look up objects filtered to escrows, handling pagination --------------------
let marker
const escrows = []
while (true) {
console.log(`Requesting page of account_objects with marker ${marker}`)
const resp = await client.request({
command: 'account_objects',
account: address,
ledger_hash, // Caution: if you use a shortcut
// such as "validated", the ledger may
// change during iteration, leading to
// inconsistent results.
type: 'escrow',
marker
})
if (resp.error) {
console.error('account_objects failed with error', resp)
client.disconnect()
process.exit(1)
}
// Add new escrows to the full list
for (const escrow of resp.result.account_objects) {
escrows.push(escrow)
}
// If there's a marker, loop and fetch the next page of results
if (resp.result.marker) {
marker = resp.result.marker
} else {
break
}
}
// Define helper function for displaying amounts -------------------------------
function display_amount (amount) {
if (typeof amount === 'string') {
// amount is drops of XRP.
const decimal_xrp = dropsToXrp(amount)
return `${decimal_xrp} XRP`
} else if (amount.hasOwnProperty('mpt_issuance_id')) {
// amount is an MPT.
// More info may be available, but that would require looking it up.
return `${amount.value} units of MPT ${amount.mpt_issuance_id}`
} else if (amount.hasOwnProperty('issuer')) {
// amount is a trust line token.
// Currency may be 3 chars or hex. For guidelines parsing hex codes,
// see "Normalize Currency Codes" code sample.
return `${amount.value} ${amount.currency} issued by ${amount.issuer}`
}
console.error(`Unexpected type of amount: ${amount}`)
client.disconnect()
process.exit(1)
}
// Summarize results -----------------------------------------------------------
console.log(`Found ${escrows.length} escrow(s).`)
for (const escrow of escrows) {
if (escrow.Account === address) {
console.log(`Outgoing escrow to ${escrow.Destination}`)
} else if (escrow.Destination === address) {
console.log(`Incoming escrow from ${escrow.Account}`)
} else {
console.log('Neither incoming nor outgoing? This is unexexpected.')
}
console.log(` Amount: ${display_amount(escrow.Amount)}`)
if (escrow.hasOwnProperty('Condition')) {
console.log(` Condition: ${escrow.Condition}`)
}
if (escrow.FinishAfter) {
const mature_time_display = rippleTimeToISOTime(escrow.FinishAfter)
if (escrow.FinishAfter < close_time) {
console.log(` Matured at ${mature_time_display}`)
} else {
console.log(` Will mature at ${mature_time_display}`)
}
}
if (escrow.hasOwnProperty('CancelAfter')) {
const cancel_time_display = rippleTimeToISOTime(escrow.CancelAfter)
if (escrow.CancelAfter < close_time) {
console.log(` EXPIRED at ${cancel_time_display}`)
} else {
console.log(` Expires at ${cancel_time_display}`)
}
}
}
client.disconnect()