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Added pending block component. #648

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Merged
Randy808 merged 1 commit into from
Aug 13, 2026
Merged

Added pending block component. #648

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91 changes: 88 additions & 3 deletions client/src/app.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,9 +3,10 @@ import { Observable as O } from './rxjs'
import {setAdapt} from '@cycle/run/lib/adapt';

import { getMempoolDepth, getConfEstimate, calcSegwitFeeGains } from './lib/fees'
import { summarizeBlockTemplate } from './lib/block-template'
import { isBitcoinNetwork } from './lib/network'
import getPrivacyAnalysis from './lib/privacy-analysis'
import { nativeAssetId, blockTxsPerPage, blocksPerPage, difficultyPeriod, showPegData } from './const'
import { nativeAssetId, blockTxsPerPage, blocksPerPage, difficultyPeriod, showPegData, blockGridTransactionSelectEvent } from './const'
import {
dbg,
combine,
Expand Down Expand Up @@ -72,6 +73,50 @@ const trackNewEntries = (items$, getId, getNewIds=defaultNewIds) => {
.scan((current, mod) => mod(current), {})
}

const trackPendingBlockTemplateUpdate = (previous, template) => {
if (!template || !Array.isArray(template.transactions)) {
return { template: null, key: null, transactionCount: null, delta: null }
}

const key = template.previousblockhash != null
? template.previousblockhash
: template.height
, transactionCount = template.transactions.length + 1
, isSamePendingBlock = previous.key != null && key != null && previous.key == key
, delta = isSamePendingBlock && previous.transactionCount != null
? transactionCount - previous.transactionCount
: null

return { template, key, transactionCount, delta: delta || null }
}

export const trackPendingBlockTemplateEvent = (previous, event) => {
if (event.tipId != null) {
return previous.template && previous.template.previousblockhash == event.tipId
? { ...previous, tipId: event.tipId }
: {
template: null,
key: null,
transactionCount: null,
delta: null,
tipId: event.tipId
}
}

const template = event.template
if (
previous.tipId != null &&
(!template || template.previousblockhash != previous.tipId)
) {
return previous
}

return {
...trackPendingBlockTemplateUpdate(previous, template),
tipId: previous.tipId
}
}

export default function main({ DOM, HTTP, route, storage, scanner: scan$, search: searchResult$, blinding: unblinded$ }) {
const

Expand Down Expand Up @@ -137,6 +182,10 @@ export default function main({ DOM, HTTP, route, storage, scanner: scan$, search

, togTx$ = click('[data-toggle-tx]').map(d => d.toggleTx).merge(page$.mapTo(null), expandTx$)
, togBlock$ = click('[data-toggle-block]').map(d => d.toggleBlock).merge(page$.mapTo(null), expandBl$)
, togPendingBlockDetails$ = click('[data-toggle-pending-block-details]')
, selectBlockGridTx$ = on('.block-grid__canvas', blockGridTransactionSelectEvent)
.map(e => e.detail && e.detail.txid)
.filter(isHash256)

, copy$ = click('[data-clipboard-copy]').map(d => d.clipboardCopy)
, pushtx$ = (process.browser
Expand Down Expand Up @@ -186,7 +235,7 @@ export default function main({ DOM, HTTP, route, storage, scanner: scan$, search
, latestBlock$ = blocks$
.map(blocks => blocks && blocks[0])
.filter(Boolean)
.distinctUntilChanged((a, b) => a.height == b.height)
.distinctUntilChanged((a, b) => a.id == b.id)

, newBlockEntries$ = trackNewEntries(
blocks$,
Expand Down Expand Up @@ -237,6 +286,11 @@ export default function main({ DOM, HTTP, route, storage, scanner: scan$, search
// Currently collapsed tx/block ("details")
, openTx$ = togTx$.startWith(null).scan((prev, txid) => prev == txid ? null : txid)
, openBlock$ = togBlock$.startWith(null).scan((prev, blockhash) => prev == blockhash ? null : blockhash)
, pendingBlockDetailsOpen$ = togPendingBlockDetails$
.mapTo(open => !open)
.merge(page$.mapTo(_ => false))
.startWith(false)
.scan((open, mod) => mod(open))

// Spending txs map (reset on every page nav)
, spends$ = O.merge(
Expand All @@ -251,6 +305,18 @@ export default function main({ DOM, HTTP, route, storage, scanner: scan$, search
, mempool$ = reply('mempool').startWith(null)
, mempoolRecent$ = reply('recent')
, newTxEntries$ = trackNewEntries(mempoolRecent$, tx => tx.txid)
, trackedBlockTemplateState$ = O.merge(
reply('block-template').map(template => ({ template }))
, latestBlock$.map(block => ({ tipId: block.id }))
)
.startWith({ template: null })
.scan(trackPendingBlockTemplateEvent, {
template: null,
key: null,
transactionCount: null,
delta: null,
tipId: null
})

// dashboard
, dashboardPegAsset$ = !showPegData
Expand Down Expand Up @@ -286,6 +352,13 @@ export default function main({ DOM, HTTP, route, storage, scanner: scan$, search

// Fee estimates
, feeEst$ = reply('fee-est').startWith(null)
, blockTemplateState$ = O.combineLatest(
trackedBlockTemplateState$
, feeEst$
, (state, feeEst) => ({
...state
, metrics: summarizeBlockTemplate(state.template, feeEst)
}))

// Bitcoin price chart data
, bitcoinMarketChart$ = reply('bitcoin-market-chart').startWith(null)
Expand Down Expand Up @@ -373,6 +446,7 @@ export default function main({ DOM, HTTP, route, storage, scanner: scan$, search
// App state
, state$ = combine({ t$, error$, tipHeight$, spends$
, goBlocks$, blocks$, nextBlocks$, prevBlocks$, dashboardState$
, pendingBlockDetailsOpen$, blockTemplateState$
, dashboardEpochStartBlock$, dashboardPreviousDifficultyBlock$
, newBlockEntries$, newTxEntries$
, goBlock$, block$, blockStatus$, blockTxs$, nextBlockTxs$, prevBlockTxs$, openBlock$
Expand Down Expand Up @@ -489,6 +563,16 @@ export default function main({ DOM, HTTP, route, storage, scanner: scan$, search
, { category: 'dashboard-peg-chain-txs', method: 'GET', path: `/asset/${nativeAssetId}/txs/chain`, bg: true }
, { category: 'dashboard-peg-mempool-txs', method: 'GET', path: `/asset/${nativeAssetId}/txs/mempool`, bg: true }]))

// refresh the pending block template while the dashboard remains open
, O.merge(
O.merge(goHome$, tickWhileViewing(30000, 'dashBoard', view$))
.throttleTime(1000)
, latestBlock$.skip(1)
.withLatestFrom(view$)
.filter(([ _, view ]) => view == 'dashBoard')
)
.mapTo({ category: 'block-template', method: 'GET', path: '/block-template', bg: true })

, goHome$.flatMap(_ => [{ category: 'blocks', method: 'GET', path: '/blocks' }
, { category: 'recent', method: 'GET', path: '/mempool/recent' }
, { category: 'fee-est', method: 'GET', path: '/fee-estimates' }
Expand Down Expand Up @@ -536,6 +620,7 @@ export default function main({ DOM, HTTP, route, storage, scanner: scan$, search
searchResult$.filter(Boolean).map(result => ({ type: 'replace', ...result }))
, byHeight$.map(hash => ({ type: 'replace', pathname: `/block/${hash}` }))
, pushedtx$.map(txid => ({ type: 'push', pathname: `/tx/${txid}` }))
, selectBlockGridTx$.map(txid => ({ type: 'push', pathname: `/tx/${txid}` }))
, updateQuery$.map(([ pathname, hash, qs ]) => ({ type: 'replace', pathname, hash, search: qs, state: { noRouting: true } }))
, searchQuery$.map(q => ({ type: 'push', pathname: '/search', search: `q=${encodeURIComponent(q)}` }))
)
Expand All @@ -544,7 +629,7 @@ export default function main({ DOM, HTTP, route, storage, scanner: scan$, search
, openTx$, openBlock$, updateQuery$
, state$, view$, block$, blockTxs$, blocks$, tx$, txBlock$, txAnalysis$, spends$, addr$
, tipHeight$, error$, loading$
, goSearch$, searchResult$, copy$, store$, navto$, scanning$, scan$
, goSearch$, searchResult$, copy$, store$, navto$, scanning$, scan$, selectBlockGridTx$
, assetMap$, goAssetList$, assetList$
, req$, reply$: dropErrors(HTTP.select()).map(r => [ r.request.category, r.req.method, r.req.url, r.body||r.text, r ]) })

Expand Down
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