diff options
Diffstat (limited to 'packages/order-watcher/src/order_watcher')
-rw-r--r-- | packages/order-watcher/src/order_watcher/event_watcher.ts | 49 |
1 files changed, 33 insertions, 16 deletions
diff --git a/packages/order-watcher/src/order_watcher/event_watcher.ts b/packages/order-watcher/src/order_watcher/event_watcher.ts index eca235e26..9ea301815 100644 --- a/packages/order-watcher/src/order_watcher/event_watcher.ts +++ b/packages/order-watcher/src/order_watcher/event_watcher.ts @@ -1,6 +1,6 @@ import { intervalUtils, logUtils } from '@0xproject/utils'; -import { Web3Wrapper } from '@0xproject/web3-wrapper'; -import { BlockParamLiteral, BlockWithoutTransactionData, LogEntry, Provider } from 'ethereum-types'; +import { marshaller, Web3Wrapper } from '@0xproject/web3-wrapper'; +import { BlockParamLiteral, FilterObject, LogEntry, Provider, RawLogEntry } from 'ethereum-types'; import { Block, BlockAndLogStreamer, Log } from 'ethereumjs-blockstream'; import * as _ from 'lodash'; @@ -20,7 +20,6 @@ enum LogEventState { */ export class EventWatcher { private readonly _web3Wrapper: Web3Wrapper; - private readonly _stateLayer: BlockParamLiteral; private readonly _isVerbose: boolean; private _blockAndLogStreamerIfExists: BlockAndLogStreamer<Block, Log> | undefined; private _blockAndLogStreamIntervalIfExists?: NodeJS.Timer; @@ -35,7 +34,6 @@ export class EventWatcher { ) { this._isVerbose = isVerbose; this._web3Wrapper = new Web3Wrapper(provider); - this._stateLayer = stateLayer; this._pollingIntervalMs = _.isUndefined(pollingIntervalIfExistsMs) ? DEFAULT_EVENT_POLLING_INTERVAL_MS : pollingIntervalIfExistsMs; @@ -62,8 +60,8 @@ export class EventWatcher { throw new Error(OrderWatcherError.SubscriptionAlreadyPresent); } this._blockAndLogStreamerIfExists = new BlockAndLogStreamer( - this._getBlockOrNullAsync.bind(this), - this._web3Wrapper.getLogsAsync.bind(this._web3Wrapper), + this._blockstreamGetBlockOrNullAsync.bind(this), + this._blockstreamGetLogsAsync.bind(this), this._onBlockAndLogStreamerError.bind(this), ); const catchAllLogFilter = {}; @@ -83,12 +81,30 @@ export class EventWatcher { ); } // This method only exists in order to comply with the expected interface of Blockstream's constructor - private async _getBlockOrNullAsync(): Promise<BlockWithoutTransactionData | null> { - const blockIfExists = await this._web3Wrapper.getBlockIfExistsAsync.bind(this._web3Wrapper); - if (_.isUndefined(blockIfExists)) { - return null; - } - return blockIfExists; + private async _blockstreamGetBlockOrNullAsync(hash: string): Promise<Block | null> { + const shouldIncludeTransactionData = false; + const blockOrNull = await this._web3Wrapper.sendRawPayloadAsync<Block | null>({ + method: 'eth_getBlockByHash', + params: [hash, shouldIncludeTransactionData], + }); + return blockOrNull; + } + // This method only exists in order to comply with the expected interface of Blockstream's constructor + private async _blockstreamGetLatestBlockOrNullAsync(): Promise<Block | null> { + const shouldIncludeTransactionData = false; + const blockOrNull = await this._web3Wrapper.sendRawPayloadAsync<Block | null>({ + method: 'eth_getBlockByNumber', + params: [BlockParamLiteral.Latest, shouldIncludeTransactionData], + }); + return blockOrNull; + } + // This method only exists in order to comply with the expected interface of Blockstream's constructor + private async _blockstreamGetLogsAsync(filterOptions: FilterObject): Promise<RawLogEntry[]> { + const logs = await this._web3Wrapper.sendRawPayloadAsync<RawLogEntry[]>({ + method: 'eth_getLogs', + params: [filterOptions], + }); + return logs as RawLogEntry[]; } private _stopBlockAndLogStream(): void { if (_.isUndefined(this._blockAndLogStreamerIfExists)) { @@ -103,19 +119,20 @@ export class EventWatcher { private async _onLogStateChangedAsync( callback: EventWatcherCallback, isRemoved: boolean, - log: LogEntry, + rawLog: RawLogEntry, ): Promise<void> { + const log: LogEntry = marshaller.unmarshalLog(rawLog); await this._emitDifferencesAsync(log, isRemoved ? LogEventState.Removed : LogEventState.Added, callback); } private async _reconcileBlockAsync(): Promise<void> { - const latestBlockIfExists = await this._web3Wrapper.getBlockIfExistsAsync(this._stateLayer); - if (_.isUndefined(latestBlockIfExists)) { + const latestBlockOrNull = await this._blockstreamGetLatestBlockOrNullAsync(); + if (_.isNull(latestBlockOrNull)) { return; // noop } // We need to coerce to Block type cause Web3.Block includes types for mempool blocks if (!_.isUndefined(this._blockAndLogStreamerIfExists)) { // If we clear the interval while fetching the block - this._blockAndLogStreamer will be undefined - await this._blockAndLogStreamerIfExists.reconcileNewBlock((latestBlockIfExists as any) as Block); + await this._blockAndLogStreamerIfExists.reconcileNewBlock(latestBlockOrNull); } } private async _emitDifferencesAsync( |