Blockchain explorer for Ethereum based network and a tool for inspecting and analyzing EVM based blockchains.
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blockscout/apps/block_scout_web/assets/js/pages/chain.js

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import $ from 'jquery'
import omit from 'lodash/omit'
import first from 'lodash/first'
import rangeRight from 'lodash/rangeRight'
import find from 'lodash/find'
import map from 'lodash/map'
import humps from 'humps'
import numeral from 'numeral'
import socket from '../socket'
import { updateAllCalculatedUsdValues, formatUsdValue } from '../lib/currency'
import { createStore, connectElements } from '../lib/redux_helpers.js'
import { batchChannel, showLoader } from '../lib/utils'
import listMorph from '../lib/list_morph'
import '../app'
const BATCH_THRESHOLD = 6
const BLOCKS_PER_PAGE = 4
export const initialState = {
addressCount: null,
availableSupply: null,
averageBlockTime: null,
marketHistoryData: null,
blocks: [],
blocksLoading: true,
blocksError: false,
transactions: [],
transactionsBatch: [],
transactionsError: false,
transactionsLoading: true,
transactionCount: null,
usdMarketCap: null,
blockCount: null
}
export const reducer = withMissingBlocks(baseReducer)
function baseReducer (state = initialState, action) {
switch (action.type) {
case 'ELEMENTS_LOAD': {
return Object.assign({}, state, omit(action, 'type'))
}
case 'RECEIVED_NEW_ADDRESS_COUNT': {
return Object.assign({}, state, {
addressCount: action.msg.count
})
}
case 'RECEIVED_NEW_BLOCK': {
if (!state.blocks.length || state.blocks[0].blockNumber < action.msg.blockNumber) {
let pastBlocks
if (state.blocks.length < BLOCKS_PER_PAGE) {
pastBlocks = state.blocks
} else {
pastBlocks = state.blocks.slice(0, -1)
}
return Object.assign({}, state, {
averageBlockTime: action.msg.averageBlockTime,
blocks: [
action.msg,
...pastBlocks
],
blockCount: action.msg.blockNumber + 1
})
} else {
return Object.assign({}, state, {
blocks: state.blocks.map((block) => block.blockNumber === action.msg.blockNumber ? action.msg : block),
blockCount: action.msg.blockNumber + 1
})
}
}
case 'START_BLOCKS_FETCH': {
return Object.assign({}, state, { blocksError: false, blocksLoading: true })
}
case 'BLOCKS_FINISH_REQUEST': {
return Object.assign({}, state, { blocksLoading: false })
}
case 'BLOCKS_FETCHED': {
return Object.assign({}, state, { blocks: [...action.msg.blocks], blocksLoading: false })
}
case 'BLOCKS_REQUEST_ERROR': {
return Object.assign({}, state, { blocksError: true, blocksLoading: false })
}
case 'RECEIVED_NEW_EXCHANGE_RATE': {
return Object.assign({}, state, {
availableSupply: action.msg.exchangeRate.availableSupply,
marketHistoryData: action.msg.marketHistoryData,
usdMarketCap: action.msg.exchangeRate.marketCapUsd
})
}
case 'RECEIVED_NEW_TRANSACTION_BATCH': {
if (state.channelDisconnected) return state
const transactionCount = state.transactionCount + action.msgs.length
if (state.transactionsLoading || state.transactionsError) {
return Object.assign({}, state, { transactionCount })
}
const transactionsLength = state.transactions.length + action.msgs.length
if (transactionsLength < BATCH_THRESHOLD) {
return Object.assign({}, state, {
transactions: [
...action.msgs.reverse(),
...state.transactions
],
transactionCount
})
} else if (!state.transactionsBatch.length && action.msgs.length < BATCH_THRESHOLD) {
return Object.assign({}, state, {
transactions: [
...action.msgs.reverse(),
...state.transactions.slice(0, -1 * action.msgs.length)
],
transactionCount
})
} else {
return Object.assign({}, state, {
transactionsBatch: [
...action.msgs.reverse(),
...state.transactionsBatch
],
transactionCount
})
}
}
case 'RECEIVED_UPDATED_TRANSACTION_STATS': {
return Object.assign({}, state, {
transactionStats: action.msg.stats
})
}
case 'START_TRANSACTIONS_FETCH':
return Object.assign({}, state, { transactionsError: false, transactionsLoading: true })
case 'TRANSACTIONS_FETCHED':
return Object.assign({}, state, { transactions: [...action.msg.transactions] })
case 'TRANSACTIONS_FETCH_ERROR':
return Object.assign({}, state, { transactionsError: true })
case 'FINISH_TRANSACTIONS_FETCH':
return Object.assign({}, state, { transactionsLoading: false })
default:
return state
}
}
function withMissingBlocks (reducer) {
return (...args) => {
const result = reducer(...args)
if (!result.blocks || result.blocks.length < 2) return result
const maxBlock = first(result.blocks).blockNumber
const minBlock = maxBlock - (result.blocks.length - 1)
return Object.assign({}, result, {
blocks: rangeRight(minBlock, maxBlock + 1)
.map((blockNumber) => find(result.blocks, ['blockNumber', blockNumber]) || {
blockNumber,
chainBlockHtml: placeHolderBlock(blockNumber)
})
})
}
}
let chart
const elements = {
'[data-chart="historyChart"]': {
load () {
chart = window.dashboardChart
},
render ($el, state, oldState) {
if (!chart || (oldState.availableSupply === state.availableSupply && oldState.marketHistoryData === state.marketHistoryData) || !state.availableSupply) return
chart.updateMarketHistory(state.availableSupply, state.marketHistoryData)
if (!chart || (JSON.stringify(oldState.transactionStats) === JSON.stringify(state.transactionStats))) return
chart.updateTransactionHistory(state.transactionStats)
}
},
'[data-selector="transaction-count"]': {
load ($el) {
return { transactionCount: numeral($el.text()).value() }
},
render ($el, state, oldState) {
if (oldState.transactionCount === state.transactionCount) return
$el.empty().append(numeral(state.transactionCount).format())
}
},
'[data-selector="block-count"]': {
load ($el) {
return { blockCount: numeral($el.text()).value() }
},
render ($el, state, oldState) {
if (oldState.blockCount === state.blockCount) return
$el.empty().append(numeral(state.blockCount).format())
}
},
'[data-selector="address-count"]': {
render ($el, state, oldState) {
if (oldState.addressCount === state.addressCount) return
$el.empty().append(state.addressCount)
}
},
'[data-selector="average-block-time"]': {
render ($el, state, oldState) {
if (oldState.averageBlockTime === state.averageBlockTime) return
$el.empty().append(state.averageBlockTime)
}
},
'[data-selector="market-cap"]': {
render ($el, state, oldState) {
if (oldState.usdMarketCap === state.usdMarketCap) return
$el.empty().append(formatUsdValue(state.usdMarketCap))
}
},
'[data-selector="tx_per_day"]': {
render ($el, state, oldState) {
if (!(JSON.stringify(oldState.transactionStats) === JSON.stringify(state.transactionStats))) {
$el.empty().append(numeral(state.transactionStats[0].number_of_transactions).format('0,0'))
}
}
},
'[data-selector="chain-block-list"]': {
load ($el) {
return {
blocksPath: $el[0].dataset.url
}
},
render ($el, state, oldState) {
if (oldState.blocks === state.blocks) return
const container = $el[0]
if (state.blocksLoading === false) {
const blocks = map(state.blocks, ({ chainBlockHtml }) => $(chainBlockHtml)[0])
listMorph(container, blocks, { key: 'dataset.blockNumber', horizontal: true })
}
}
},
'[data-selector="chain-block-list"] [data-selector="error-message"]': {
render ($el, state, _oldState) {
if (state.blocksError) {
$el.show()
} else {
$el.hide()
}
}
},
'[data-selector="chain-block-list"] [data-selector="loading-message"]': {
render ($el, state, _oldState) {
showLoader(state.blocksLoading, $el)
}
},
'[data-selector="transactions-list"] [data-selector="error-message"]': {
render ($el, state, _oldState) {
$el.toggle(state.transactionsError)
}
},
'[data-selector="transactions-list"] [data-selector="loading-message"]': {
render ($el, state, _oldState) {
showLoader(state.transactionsLoading, $el)
}
},
'[data-selector="transactions-list"]': {
load ($el) {
return { transactionsPath: $el[0].dataset.transactionsPath }
},
render ($el, state, oldState) {
if (oldState.transactions === state.transactions) return
const container = $el[0]
const newElements = map(state.transactions, ({ transactionHtml }) => $(transactionHtml)[0])
listMorph(container, newElements, { key: 'dataset.identifierHash' })
}
},
'[data-selector="channel-batching-count"]': {
render ($el, state, oldState) {
const $channelBatching = $('[data-selector="channel-batching-message"]')
if (!state.transactionsBatch.length) return $channelBatching.hide()
$channelBatching.show()
$el[0].innerHTML = numeral(state.transactionsBatch.length).format()
}
}
}
const $chainDetailsPage = $('[data-page="chain-details"]')
if ($chainDetailsPage.length) {
const store = createStore(reducer)
connectElements({ store, elements })
loadTransactions(store)
bindTransactionErrorMessage(store)
loadBlocks(store)
bindBlockErrorMessage(store)
const exchangeRateChannel = socket.channel('exchange_rate:new_rate')
exchangeRateChannel.join()
exchangeRateChannel.on('new_rate', (msg) => {
updateAllCalculatedUsdValues(humps.camelizeKeys(msg).exchangeRate.usdValue)
store.dispatch({
type: 'RECEIVED_NEW_EXCHANGE_RATE',
msg: humps.camelizeKeys(msg)
})
})
const addressesChannel = socket.channel('addresses:new_address')
addressesChannel.join()
addressesChannel.on('count', msg => store.dispatch({
type: 'RECEIVED_NEW_ADDRESS_COUNT',
msg: humps.camelizeKeys(msg)
}))
const blocksChannel = socket.channel('blocks:new_block')
blocksChannel.join()
blocksChannel.on('new_block', msg => store.dispatch({
type: 'RECEIVED_NEW_BLOCK',
msg: humps.camelizeKeys(msg)
}))
const transactionsChannel = socket.channel('transactions:new_transaction')
transactionsChannel.join()
transactionsChannel.on('transaction', batchChannel((msgs) => store.dispatch({
type: 'RECEIVED_NEW_TRANSACTION_BATCH',
msgs: humps.camelizeKeys(msgs)
})))
const transactionStatsChannel = socket.channel('transactions:stats')
transactionStatsChannel.join()
transactionStatsChannel.on('update', msg => store.dispatch({
type: 'RECEIVED_UPDATED_TRANSACTION_STATS',
msg: msg
}))
}
function loadTransactions (store) {
const path = store.getState().transactionsPath
store.dispatch({ type: 'START_TRANSACTIONS_FETCH' })
$.getJSON(path)
.done(response => store.dispatch({ type: 'TRANSACTIONS_FETCHED', msg: humps.camelizeKeys(response) }))
.fail(() => store.dispatch({ type: 'TRANSACTIONS_FETCH_ERROR' }))
.always(() => store.dispatch({ type: 'FINISH_TRANSACTIONS_FETCH' }))
}
function bindTransactionErrorMessage (store) {
$('[data-selector="transactions-list"] [data-selector="error-message"]').on('click', _event => loadTransactions(store))
}
export function placeHolderBlock (blockNumber) {
return `
<div
class="col-lg-3 d-flex fade-up-blocks-chain"
data-block-number="${blockNumber}"
data-selector="place-holder"
>
<div
class="tile tile-type-block d-flex align-items-center fade-up"
>
<span class="loading-spinner-small ml-1 mr-4">
<span class="loading-spinner-block-1"></span>
<span class="loading-spinner-block-2"></span>
</span>
<div>
<span class="tile-title pr-0 pl-0">${blockNumber}</span>
<div class="tile-transactions">${window.localized['Block Processing']}</div>
</div>
</div>
</div>
`
}
function loadBlocks (store) {
const url = store.getState().blocksPath
store.dispatch({ type: 'START_BLOCKS_FETCH' })
$.getJSON(url)
.done(response => {
store.dispatch({ type: 'BLOCKS_FETCHED', msg: humps.camelizeKeys(response) })
})
.fail(() => store.dispatch({ type: 'BLOCKS_REQUEST_ERROR' }))
.always(() => store.dispatch({ type: 'BLOCKS_FINISH_REQUEST' }))
}
function bindBlockErrorMessage (store) {
$('[data-selector="chain-block-list"] [data-selector="error-message"]').on('click', _event => loadBlocks(store))
}