@soroban-react/events
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See the official gitbook: https://soroban-react.gitbook.io/index/ ___
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JavaScript
;
// import { useSorobanReact, SorobanContextType } from '@soroban-react/core'
// import React, { useEffect, useRef } from 'react'
// import * as SorobanClient from 'soroban-client'
// import {
// SorobanEventsContext,
// DefaultSorobanEventsContext,
// } from './SorobanEventsContext'
// let xdr = SorobanClient.xdr
// export interface SorobanEventsProviderProps {
// children: React.ReactNode
// }
// export function SorobanEventsProvider({
// children,
// }: SorobanEventsProviderProps) {
// const pollInterval = 5000
// const sorobanContext: SorobanContextType = useSorobanReact()
// useEffect(() => {
// let timeoutId: NodeJS.Timeout | null = null
// let stop = false
// async function pollEvents(): Promise<void> {
// try {
// if (!sorobanContext.server) {
// console.debug('RPC events: Not connected to server')
// return
// }
// for (const subscription of DefaultSorobanEventsContext.subscriptions) {
// if (!subscription.lastLedgerStart) {
// let latestLedgerState =
// await sorobanContext.server.getLatestLedger()
// subscription.lastLedgerStart = latestLedgerState.sequence
// }
// const subscriptionTopicXdrs: Array<string> = []
// subscription.topics &&
// subscription.topics.forEach(topic => {
// subscriptionTopicXdrs.push(
// xdr.ScVal.scvSymbol(topic).toXDR('base64')
// )
// })
// // TODO: updated js-soroban-client to include latestLedger
// interface GetEventsWithLatestLedger
// extends SorobanClient.SorobanRpc.GetEventsResponse {
// latestLedger?: string
// }
// // TODO: use rpc batch for single round trip, each subscription can be one
// // getEvents request in the batch, is that possible now?
// let response = (await sorobanContext.server.getEvents({
// startLedger: !subscription.pagingToken
// ? subscription.lastLedgerStart
// : undefined,
// cursor: subscription.pagingToken,
// filters: [
// {
// contractIds: [subscription.contractId],
// topics: [subscriptionTopicXdrs],
// type: 'contract',
// },
// ],
// limit: 10,
// })) as GetEventsWithLatestLedger
// delete subscription.pagingToken
// if (response.latestLedger) {
// subscription.lastLedgerStart = parseInt(response.latestLedger)
// }
// response.events &&
// response.events.forEach(event => {
// try {
// subscription.cb(event)
// } catch (error) {
// console.error(
// 'Poll Events: subscription callback had error: ',
// error
// )
// } finally {
// subscription.pagingToken = event.pagingToken
// }
// })
// }
// } catch (error) {
// console.error('Poll Events: error: ', error)
// } finally {
// if (!stop) {
// timeoutId = setTimeout(pollEvents, pollInterval)
// }
// }
// }
// pollEvents()
// return () => {
// if (timeoutId != null) clearTimeout(timeoutId)
// stop = true
// }
// }, [sorobanContext])
// return (
// <SorobanEventsContext.Provider value={DefaultSorobanEventsContext}>
// {children}
// </SorobanEventsContext.Provider>
// )
// }