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Merge pull request #3855 from mempool/mononaut/websocket-responses

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Fix inconsistent websocket responses
This commit is contained in:
softsimon 2023-07-01 17:19:22 +02:00 • committed by GitHub
commit 70854de6ec
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5 changed files with 127 additions and 60 deletions
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10
backend/src/api/blocks.ts
View file

@ -730,6 +730,11 @@ class Blocks {
this.currentDifficulty = block.difficulty;
}
// wait for pending async callbacks to finish
this.updateTimerProgress(timer, `waiting for async callbacks to complete for ${this.currentBlockHeight}`);
await Promise.all(callbackPromises);
this.updateTimerProgress(timer, `async callbacks completed for ${this.currentBlockHeight}`);
this.blocks.push(blockExtended);
if (this.blocks.length > config.MEMPOOL.INITIAL_BLOCKS_AMOUNT * 4) {
this.blocks = this.blocks.slice(-config.MEMPOOL.INITIAL_BLOCKS_AMOUNT * 4);
@ -746,11 +751,6 @@ class Blocks {
diskCache.$saveCacheToDisk();
}
// wait for pending async callbacks to finish
this.updateTimerProgress(timer, `waiting for async callbacks to complete for ${this.currentBlockHeight}`);
await Promise.all(callbackPromises);
this.updateTimerProgress(timer, `async callbacks completed for ${this.currentBlockHeight}`);
handledBlocks++;
}

164
backend/src/api/websocket-handler.ts
View file

@ -22,6 +22,14 @@ import { deepClone } from '../utils/clone';
import priceUpdater from '../tasks/price-updater';
import { ApiPrice } from '../repositories/PricesRepository';
// valid 'want' subscriptions
const wantable = [
'blocks',
'mempool-blocks',
'live-2h-chart',
'stats',
];
class WebsocketHandler {
private wss: WebSocket.Server | undefined;
private extraInitProperties = {};
@ -30,7 +38,7 @@ class WebsocketHandler {
private numConnected = 0;
private numDisconnected = 0;
private initData: { [key: string]: string } = {};
private socketData: { [key: string]: string } = {};
private serializedInitData: string = '{}';
constructor() { }
@ -39,28 +47,28 @@ class WebsocketHandler {
this.wss = wss;
}
setExtraInitProperties(property: string, value: any) {
setExtraInitData(property: string, value: any) {
this.extraInitProperties[property] = value;
this.setInitDataFields(this.extraInitProperties);
this.updateSocketDataFields(this.extraInitProperties);
}
private setInitDataFields(data: { [property: string]: any }): void {
private updateSocketDataFields(data: { [property: string]: any }): void {
for (const property of Object.keys(data)) {
if (data[property] != null) {
this.initData[property] = JSON.stringify(data[property]);
this.socketData[property] = JSON.stringify(data[property]);
} else {
delete this.initData[property];
delete this.socketData[property];
}
}
this.serializedInitData = '{'
+ Object.keys(this.initData).map(key => `"${key}": ${this.initData[key]}`).join(', ')
+ '}';
+ Object.keys(this.socketData).map(key => `"${key}": ${this.socketData[key]}`).join(', ')
+ '}';
}
private updateInitData(): void {
private updateSocketData(): void {
const _blocks = blocks.getBlocks().slice(-config.MEMPOOL.INITIAL_BLOCKS_AMOUNT);
const da = difficultyAdjustment.getDifficultyAdjustment();
this.setInitDataFields({
this.updateSocketDataFields({
'mempoolInfo': memPool.getMempoolInfo(),
'vBytesPerSecond': memPool.getVBytesPerSecond(),
'blocks': _blocks,
@ -94,11 +102,33 @@ class WebsocketHandler {
const parsedMessage: WebsocketResponse = JSON.parse(message);
const response = {};
if (parsedMessage.action === 'want') {
client['want-blocks'] = parsedMessage.data.indexOf('blocks') > -1;
client['want-mempool-blocks'] = parsedMessage.data.indexOf('mempool-blocks') > -1;
client['want-live-2h-chart'] = parsedMessage.data.indexOf('live-2h-chart') > -1;
client['want-stats'] = parsedMessage.data.indexOf('stats') > -1;
const wantNow = {};
if (parsedMessage && parsedMessage.action === 'want' && Array.isArray(parsedMessage.data)) {
for (const sub of wantable) {
const key = `want-${sub}`;
const wants = parsedMessage.data.includes(sub);
if (wants && client['wants'] && !client[key]) {
wantNow[key] = true;
}
client[key] = wants;
}
client['wants'] = true;
}
// send initial data when a client first starts a subscription
if (wantNow['want-blocks'] || (parsedMessage && parsedMessage['refresh-blocks'])) {
response['blocks'] = this.socketData['blocks'];
}
if (wantNow['want-mempool-blocks']) {
response['mempool-blocks'] = this.socketData['mempool-blocks'];
}
if (wantNow['want-stats']) {
response['mempoolInfo'] = this.socketData['mempoolInfo'];
response['vBytesPerSecond'] = this.socketData['vBytesPerSecond'];
response['fees'] = this.socketData['fees'];
response['da'] = this.socketData['da'];
}
if (parsedMessage && parsedMessage['track-tx']) {
@ -109,21 +139,21 @@ class WebsocketHandler {
if (parsedMessage['watch-mempool']) {
const rbfCacheTxid = rbfCache.getReplacedBy(trackTxid);
if (rbfCacheTxid) {
response['txReplaced'] = {
response['txReplaced'] = JSON.stringify({
txid: rbfCacheTxid,
};
});
client['track-tx'] = null;
} else {
// It might have appeared before we had the time to start watching for it
const tx = memPool.getMempool()[trackTxid];
if (tx) {
if (config.MEMPOOL.BACKEND === 'esplora') {
response['tx'] = tx;
response['tx'] = JSON.stringify(tx);
} else {
// tx.prevout is missing from transactions when in bitcoind mode
try {
const fullTx = await transactionUtils.$getMempoolTransactionExtended(tx.txid, true);
response['tx'] = fullTx;
response['tx'] = JSON.stringify(fullTx);
} catch (e) {
logger.debug('Error finding transaction: ' + (e instanceof Error ? e.message : e));
}
@ -131,7 +161,7 @@ class WebsocketHandler {
} else {
try {
const fullTx = await transactionUtils.$getMempoolTransactionExtended(client['track-tx'], true);
response['tx'] = fullTx;
response['tx'] = JSON.stringify(fullTx);
} catch (e) {
logger.debug('Error finding transaction. ' + (e instanceof Error ? e.message : e));
client['track-mempool-tx'] = parsedMessage['track-tx'];
@ -141,10 +171,10 @@ class WebsocketHandler {
}
const tx = memPool.getMempool()[trackTxid];
if (tx && tx.position) {
response['txPosition'] = {
response['txPosition'] = JSON.stringify({
txid: trackTxid,
position: tx.position,
};
});
}
} else {
client['track-tx'] = null;
@ -177,10 +207,10 @@ class WebsocketHandler {
const index = parsedMessage['track-mempool-block'];
client['track-mempool-block'] = index;
const mBlocksWithTransactions = mempoolBlocks.getMempoolBlocksWithTransactions();
response['projected-block-transactions'] = {
response['projected-block-transactions'] = JSON.stringify({
index: index,
blockTransactions: mBlocksWithTransactions[index]?.transactions || [],
};
});
} else {
client['track-mempool-block'] = null;
}
@ -189,23 +219,24 @@ class WebsocketHandler {
if (parsedMessage && parsedMessage['track-rbf'] !== undefined) {
if (['all', 'fullRbf'].includes(parsedMessage['track-rbf'])) {
client['track-rbf'] = parsedMessage['track-rbf'];
response['rbfLatest'] = JSON.stringify(rbfCache.getRbfTrees(parsedMessage['track-rbf'] === 'fullRbf'));
} else {
client['track-rbf'] = false;
}
}
if (parsedMessage.action === 'init') {
if (!this.initData['blocks']?.length || !this.initData['da']) {
this.updateInitData();
if (!this.socketData['blocks']?.length || !this.socketData['da']) {
this.updateSocketData();
}
if (!this.initData['blocks']?.length) {
if (!this.socketData['blocks']?.length) {
return;
}
client.send(this.serializedInitData);
}
if (parsedMessage.action === 'ping') {
response['pong'] = true;
response['pong'] = JSON.stringify(true);
}
if (parsedMessage['track-donation'] && parsedMessage['track-donation'].length === 22) {
@ -221,7 +252,8 @@ class WebsocketHandler {
}
if (Object.keys(response).length) {
client.send(JSON.stringify(response));
const serializedResponse = this.serializeResponse(response);
client.send(serializedResponse);
}
} catch (e) {
logger.debug('Error parsing websocket message: ' + (e instanceof Error ? e.message : e));
@ -250,7 +282,7 @@ class WebsocketHandler {
throw new Error('WebSocket.Server is not set');
}
this.setInitDataFields({ 'loadingIndicators': indicators });
this.updateSocketDataFields({ 'loadingIndicators': indicators });
const response = JSON.stringify({ loadingIndicators: indicators });
this.wss.clients.forEach((client) => {
@ -266,7 +298,7 @@ class WebsocketHandler {
throw new Error('WebSocket.Server is not set');
}
this.setInitDataFields({ 'conversions': conversionRates });
this.updateSocketDataFields({ 'conversions': conversionRates });
const response = JSON.stringify({ conversions: conversionRates });
this.wss.clients.forEach((client) => {
@ -336,11 +368,21 @@ class WebsocketHandler {
memPool.addToSpendMap(newTransactions);
const recommendedFees = feeApi.getRecommendedFee();
const latestTransactions = newTransactions.slice(0, 6).map((tx) => Common.stripTransaction(tx));
// update init data
this.updateInitData();
this.updateSocketDataFields({
'mempoolInfo': mempoolInfo,
'vBytesPerSecond': vBytesPerSecond,
'mempool-blocks': mBlocks,
'transactions': latestTransactions,
'loadingIndicators': loadingIndicators.getLoadingIndicators(),
'da': da?.previousTime ? da : undefined,
'fees': recommendedFees,
});
// cache serialized objects to avoid stringify-ing the same thing for every client
const responseCache = { ...this.initData };
const responseCache = { ...this.socketData };
function getCachedResponse(key: string, data): string {
if (!responseCache[key]) {
responseCache[key] = JSON.stringify(data);
@ -371,8 +413,6 @@ class WebsocketHandler {
}
}
const latestTransactions = newTransactions.slice(0, 6).map((tx) => Common.stripTransaction(tx));
this.wss.clients.forEach(async (client) => {
if (client.readyState !== WebSocket.OPEN) {
return;
@ -490,7 +530,7 @@ class WebsocketHandler {
if (rbfReplacedBy) {
response['rbfTransaction'] = JSON.stringify({
txid: rbfReplacedBy,
})
});
}
const rbfChange = rbfChanges.map[client['track-tx']];
@ -524,9 +564,7 @@ class WebsocketHandler {
}
if (Object.keys(response).length) {
const serializedResponse = '{'
+ Object.keys(response).map(key => `"${key}": ${response[key]}`).join(', ')
+ '}';
const serializedResponse = this.serializeResponse(response);
client.send(serializedResponse);
}
});
@ -633,11 +671,19 @@ class WebsocketHandler {
const da = difficultyAdjustment.getDifficultyAdjustment();
const fees = feeApi.getRecommendedFee();
const mempoolInfo = memPool.getMempoolInfo();
// update init data
this.updateInitData();
this.updateSocketDataFields({
'mempoolInfo': mempoolInfo,
'blocks': [...blocks.getBlocks(), block].slice(-config.MEMPOOL.INITIAL_BLOCKS_AMOUNT),
'mempool-blocks': mBlocks,
'loadingIndicators': loadingIndicators.getLoadingIndicators(),
'da': da?.previousTime ? da : undefined,
'fees': fees,
});
const responseCache = { ...this.initData };
const responseCache = { ...this.socketData };
function getCachedResponse(key, data): string {
if (!responseCache[key]) {
responseCache[key] = JSON.stringify(data);
@ -645,22 +691,26 @@ class WebsocketHandler {
return responseCache[key];
}
const mempoolInfo = memPool.getMempoolInfo();
this.wss.clients.forEach((client) => {
if (client.readyState !== WebSocket.OPEN) {
return;
}
if (!client['want-blocks']) {
return;
const response = {};
if (client['want-blocks']) {
response['block'] = getCachedResponse('block', block);
}
const response = {};
response['block'] = getCachedResponse('block', block);
response['mempoolInfo'] = getCachedResponse('mempoolInfo', mempoolInfo);
response['da'] = getCachedResponse('da', da?.previousTime ? da : undefined);
response['fees'] = getCachedResponse('fees', fees);
if (client['want-stats']) {
response['mempoolInfo'] = getCachedResponse('mempoolInfo', mempoolInfo);
response['vBytesPerSecond'] = getCachedResponse('vBytesPerSecond', memPool.getVBytesPerSecond());
response['fees'] = getCachedResponse('fees', fees);
if (da?.previousTime) {
response['da'] = getCachedResponse('da', da);
}
}
if (mBlocks && client['want-mempool-blocks']) {
response['mempool-blocks'] = getCachedResponse('mempool-blocks', mBlocks);
@ -755,11 +805,19 @@ class WebsocketHandler {
}
}
const serializedResponse = '{'
if (Object.keys(response).length) {
const serializedResponse = this.serializeResponse(response);
client.send(serializedResponse);
}
});
}
// takes a dictionary of JSON serialized values
// and zips it together into a valid JSON object
private serializeResponse(response): string {
return '{'
+ Object.keys(response).map(key => `"${key}": ${response[key]}`).join(', ')
+ '}';
client.send(serializedResponse);
});
}
private printLogs(): void {

2
backend/src/index.ts
View file

@ -150,7 +150,7 @@ class Server {
if (config.BISQ.ENABLED) {
bisq.startBisqService();
bisq.setPriceCallbackFunction((price) => websocketHandler.setExtraInitProperties('bsq-price', price));
bisq.setPriceCallbackFunction((price) => websocketHandler.setExtraInitData('bsq-price', price));
blocks.setNewBlockCallback(bisq.handleNewBitcoinBlock.bind(bisq));
bisqMarkets.startBisqService();
}

1
frontend/src/app/interfaces/websocket.interface.ts
View file

@ -31,6 +31,7 @@ export interface WebsocketResponse {
'track-rbf'?: string;
'watch-mempool'?: boolean;
'track-bisq-market'?: string;
'refresh-blocks'?: boolean;
}
export interface ReplacedTransaction extends Transaction {

10
frontend/src/app/services/websocket.service.ts
View file

@ -235,6 +235,8 @@ export class WebsocketService {
}
handleResponse(response: WebsocketResponse) {
let reinitBlocks = false;
if (response.blocks && response.blocks.length) {
const blocks = response.blocks;
let maxHeight = 0;
@ -256,9 +258,11 @@ export class WebsocketService {
}
if (response.block) {
if (response.block.height > this.stateService.latestBlockHeight) {
if (response.block.height === this.stateService.latestBlockHeight + 1) {
this.stateService.updateChainTip(response.block.height);
this.stateService.blocks$.next([response.block, response.txConfirmed || '']);
} else if (response.block.height > this.stateService.latestBlockHeight + 1) {
reinitBlocks = true;
}
if (response.txConfirmed) {
@ -369,5 +373,9 @@ export class WebsocketService {
if (response['git-commit']) {
this.stateService.backendInfo$.next(response['git-commit']);
}
if (reinitBlocks) {
this.websocketSubject.next({'refresh-blocks': true});
}
}
}