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-rw-r--r--packages/0x.js/src/order_watcher/event_watcher.ts10
-rw-r--r--packages/0x.js/src/order_watcher/expiration_watcher.ts76
-rw-r--r--packages/0x.js/src/order_watcher/order_state_watcher.ts37
-rw-r--r--packages/0x.js/src/order_watcher/remaining_fillable_calculator.ts86
-rw-r--r--packages/0x.js/src/types.ts7
-rw-r--r--packages/0x.js/src/utils/order_state_utils.ts18
-rw-r--r--packages/0x.js/src/utils/order_validation_utils.ts4
-rw-r--r--packages/0x.js/src/utils/utils.ts7
-rw-r--r--packages/0x.js/src/web3_wrapper.ts38
9 files changed, 259 insertions, 24 deletions
diff --git a/packages/0x.js/src/order_watcher/event_watcher.ts b/packages/0x.js/src/order_watcher/event_watcher.ts
index c39431f6d..ecbab0cd5 100644
--- a/packages/0x.js/src/order_watcher/event_watcher.ts
+++ b/packages/0x.js/src/order_watcher/event_watcher.ts
@@ -12,7 +12,7 @@ import {intervalUtils} from '../utils/interval_utils';
import {assert} from '../utils/assert';
import {utils} from '../utils/utils';
-const DEFAULT_EVENT_POLLING_INTERVAL = 200;
+const DEFAULT_EVENT_POLLING_INTERVAL_MS = 200;
enum LogEventState {
Removed,
@@ -28,11 +28,11 @@ export class EventWatcher {
private _pollingIntervalMs: number;
private _intervalIdIfExists?: NodeJS.Timer;
private _lastEvents: Web3.LogEntry[] = [];
- constructor(web3Wrapper: Web3Wrapper, pollingIntervalMs: undefined|number) {
+ constructor(web3Wrapper: Web3Wrapper, pollingIntervalIfExistsMs: undefined|number) {
this._web3Wrapper = web3Wrapper;
- this._pollingIntervalMs = _.isUndefined(pollingIntervalMs) ?
- DEFAULT_EVENT_POLLING_INTERVAL :
- pollingIntervalMs;
+ this._pollingIntervalMs = _.isUndefined(pollingIntervalIfExistsMs) ?
+ DEFAULT_EVENT_POLLING_INTERVAL_MS :
+ pollingIntervalIfExistsMs;
}
public subscribe(callback: EventWatcherCallback): void {
assert.isFunction('callback', callback);
diff --git a/packages/0x.js/src/order_watcher/expiration_watcher.ts b/packages/0x.js/src/order_watcher/expiration_watcher.ts
new file mode 100644
index 000000000..717edaad7
--- /dev/null
+++ b/packages/0x.js/src/order_watcher/expiration_watcher.ts
@@ -0,0 +1,76 @@
+import * as _ from 'lodash';
+import {BigNumber} from 'bignumber.js';
+import {RBTree} from 'bintrees';
+import {utils} from '../utils/utils';
+import {intervalUtils} from '../utils/interval_utils';
+import {SignedOrder, ZeroExError} from '../types';
+import {ZeroEx} from '../0x';
+
+const DEFAULT_EXPIRATION_MARGIN_MS = 0;
+const DEFAULT_ORDER_EXPIRATION_CHECKING_INTERVAL_MS = 50;
+
+/**
+ * This class includes the functionality to detect expired orders.
+ * It stores them in a min heap by expiration time and checks for expired ones every `orderExpirationCheckingIntervalMs`
+ */
+export class ExpirationWatcher {
+ private orderHashByExpirationRBTree: RBTree<string>;
+ private expiration: {[orderHash: string]: BigNumber} = {};
+ private orderExpirationCheckingIntervalMs: number;
+ private expirationMarginMs: number;
+ private orderExpirationCheckingIntervalIdIfExists?: NodeJS.Timer;
+ constructor(expirationMarginIfExistsMs?: number,
+ orderExpirationCheckingIntervalIfExistsMs?: number) {
+ this.expirationMarginMs = expirationMarginIfExistsMs ||
+ DEFAULT_EXPIRATION_MARGIN_MS;
+ this.orderExpirationCheckingIntervalMs = expirationMarginIfExistsMs ||
+ DEFAULT_ORDER_EXPIRATION_CHECKING_INTERVAL_MS;
+ const scoreFunction = (orderHash: string) => this.expiration[orderHash].toNumber();
+ const comparator = (lhs: string, rhs: string) => scoreFunction(lhs) - scoreFunction(rhs);
+ this.orderHashByExpirationRBTree = new RBTree(comparator);
+ }
+ public subscribe(callbackAsync: (orderHash: string) => Promise<void>): void {
+ if (!_.isUndefined(this.orderExpirationCheckingIntervalIdIfExists)) {
+ throw new Error(ZeroExError.SubscriptionAlreadyPresent);
+ }
+ this.orderExpirationCheckingIntervalIdIfExists = intervalUtils.setAsyncExcludingInterval(
+ this.pruneExpiredOrdersAsync.bind(this, callbackAsync), this.orderExpirationCheckingIntervalMs,
+ );
+ }
+ public unsubscribe(): void {
+ if (_.isUndefined(this.orderExpirationCheckingIntervalIdIfExists)) {
+ throw new Error(ZeroExError.SubscriptionNotFound);
+ }
+ intervalUtils.clearAsyncExcludingInterval(this.orderExpirationCheckingIntervalIdIfExists);
+ delete this.orderExpirationCheckingIntervalIdIfExists;
+ }
+ public addOrder(orderHash: string, expirationUnixTimestampMs: BigNumber): void {
+ this.expiration[orderHash] = expirationUnixTimestampMs;
+ this.orderHashByExpirationRBTree.insert(orderHash);
+ }
+ public removeOrder(orderHash: string): void {
+ this.orderHashByExpirationRBTree.remove(orderHash);
+ delete this.expiration[orderHash];
+ }
+ private async pruneExpiredOrdersAsync(callbackAsync: (orderHash: string) => Promise<void>): Promise<void> {
+ const currentUnixTimestampMs = utils.getCurrentUnixTimestampMs();
+ while (true) {
+ const hasTrakedOrders = this.orderHashByExpirationRBTree.size === 0;
+ if (hasTrakedOrders) {
+ break;
+ }
+ const nextOrderHashToExpire = this.orderHashByExpirationRBTree.min();
+ const hasNoExpiredOrders = this.expiration[nextOrderHashToExpire].greaterThan(
+ currentUnixTimestampMs.plus(this.expirationMarginMs),
+ );
+ const isSubscriptionActive = _.isUndefined(this.orderExpirationCheckingIntervalIdIfExists);
+ if (hasNoExpiredOrders || isSubscriptionActive) {
+ break;
+ }
+ const orderHash = this.orderHashByExpirationRBTree.min();
+ this.orderHashByExpirationRBTree.remove(orderHash);
+ delete this.expiration[orderHash];
+ await callbackAsync(orderHash);
+ }
+ }
+}
diff --git a/packages/0x.js/src/order_watcher/order_state_watcher.ts b/packages/0x.js/src/order_watcher/order_state_watcher.ts
index 648345c48..44a41669d 100644
--- a/packages/0x.js/src/order_watcher/order_state_watcher.ts
+++ b/packages/0x.js/src/order_watcher/order_state_watcher.ts
@@ -6,6 +6,7 @@ import {assert} from '../utils/assert';
import {utils} from '../utils/utils';
import {artifacts} from '../artifacts';
import {AbiDecoder} from '../utils/abi_decoder';
+import {intervalUtils} from '../utils/interval_utils';
import {OrderStateUtils} from '../utils/order_state_utils';
import {
LogEvent,
@@ -24,14 +25,14 @@ import {
ExchangeEvents,
TokenEvents,
ZeroExError,
+ ExchangeContractErrs,
} from '../types';
import {Web3Wrapper} from '../web3_wrapper';
import {TokenWrapper} from '../contract_wrappers/token_wrapper';
import {ExchangeWrapper} from '../contract_wrappers/exchange_wrapper';
import {OrderFilledCancelledLazyStore} from '../stores/order_filled_cancelled_lazy_store';
import {BalanceAndProxyAllowanceLazyStore} from '../stores/balance_proxy_allowance_lazy_store';
-
-const DEFAULT_NUM_CONFIRMATIONS = 0;
+import {ExpirationWatcher} from './expiration_watcher';
interface DependentOrderHashes {
[makerAddress: string]: {
@@ -61,6 +62,7 @@ export class OrderStateWatcher {
private _eventWatcher: EventWatcher;
private _web3Wrapper: Web3Wrapper;
private _abiDecoder: AbiDecoder;
+ private _expirationWatcher: ExpirationWatcher;
private _orderStateUtils: OrderStateUtils;
private _orderFilledCancelledLazyStore: OrderFilledCancelledLazyStore;
private _balanceAndProxyAllowanceLazyStore: BalanceAndProxyAllowanceLazyStore;
@@ -70,13 +72,22 @@ export class OrderStateWatcher {
) {
this._abiDecoder = abiDecoder;
this._web3Wrapper = web3Wrapper;
- const eventPollingIntervalMs = _.isUndefined(config) ? undefined : config.eventPollingIntervalMs;
- this._eventWatcher = new EventWatcher(web3Wrapper, eventPollingIntervalMs);
+ const pollingIntervalIfExistsMs = _.isUndefined(config) ? undefined : config.eventPollingIntervalMs;
+ this._eventWatcher = new EventWatcher(web3Wrapper, pollingIntervalIfExistsMs);
this._balanceAndProxyAllowanceLazyStore = new BalanceAndProxyAllowanceLazyStore(token);
this._orderFilledCancelledLazyStore = new OrderFilledCancelledLazyStore(exchange);
this._orderStateUtils = new OrderStateUtils(
this._balanceAndProxyAllowanceLazyStore, this._orderFilledCancelledLazyStore,
);
+ const orderExpirationCheckingIntervalMsIfExists = _.isUndefined(config) ?
+ undefined :
+ config.orderExpirationCheckingIntervalMs;
+ const expirationMarginIfExistsMs = _.isUndefined(config) ?
+ undefined :
+ config.expirationMarginMs;
+ this._expirationWatcher = new ExpirationWatcher(
+ expirationMarginIfExistsMs, orderExpirationCheckingIntervalMsIfExists,
+ );
}
/**
* Add an order to the orderStateWatcher. Before the order is added, it's
@@ -89,6 +100,8 @@ export class OrderStateWatcher {
assert.isValidSignature(orderHash, signedOrder.ecSignature, signedOrder.maker);
this._orderByOrderHash[orderHash] = signedOrder;
await this.addToDependentOrderHashesAsync(signedOrder, orderHash);
+ const expirationUnixTimestampMs = signedOrder.expirationUnixTimestampSec.times(1000);
+ this._expirationWatcher.addOrder(orderHash, expirationUnixTimestampMs);
}
/**
* Removes an order from the orderStateWatcher
@@ -106,6 +119,7 @@ export class OrderStateWatcher {
const zrxTokenAddress = await exchange.getZRXTokenAddressAsync();
this.removeFromDependentOrderHashes(signedOrder.maker, zrxTokenAddress, orderHash);
this.removeFromDependentOrderHashes(signedOrder.maker, signedOrder.makerTokenAddress, orderHash);
+ this._expirationWatcher.removeOrder(orderHash);
}
/**
* Starts an orderStateWatcher subscription. The callback will be called every time a watched order's
@@ -120,6 +134,7 @@ export class OrderStateWatcher {
}
this._callbackIfExists = callback;
this._eventWatcher.subscribe(this._onEventWatcherCallbackAsync.bind(this));
+ this._expirationWatcher.subscribe(this._onOrderExpiredAsync.bind(this));
}
/**
* Ends an orderStateWatcher subscription.
@@ -132,6 +147,20 @@ export class OrderStateWatcher {
this._orderFilledCancelledLazyStore.deleteAll();
delete this._callbackIfExists;
this._eventWatcher.unsubscribe();
+ this._expirationWatcher.unsubscribe();
+ }
+ private async _onOrderExpiredAsync(orderHash: string): Promise<void> {
+ const orderState: OrderState = {
+ isValid: false,
+ orderHash,
+ error: ExchangeContractErrs.OrderFillExpired,
+ };
+ if (!_.isUndefined(this._orderByOrderHash[orderHash])) {
+ await this.removeOrderAsync(orderHash);
+ if (!_.isUndefined(this._callbackIfExists)) {
+ this._callbackIfExists(orderState);
+ }
+ }
}
private async _onEventWatcherCallbackAsync(log: LogEvent): Promise<void> {
const maybeDecodedLog = this._abiDecoder.tryToDecodeLogOrNoop(log);
diff --git a/packages/0x.js/src/order_watcher/remaining_fillable_calculator.ts b/packages/0x.js/src/order_watcher/remaining_fillable_calculator.ts
new file mode 100644
index 000000000..c77d4428c
--- /dev/null
+++ b/packages/0x.js/src/order_watcher/remaining_fillable_calculator.ts
@@ -0,0 +1,86 @@
+import {SignedOrder} from '../types';
+import {BigNumber} from 'bignumber.js';
+
+export class RemainingFillableCalculator {
+ private signedOrder: SignedOrder;
+ private isMakerTokenZRX: boolean;
+ // Transferrable Amount is the minimum of Approval and Balance
+ private transferrableMakerTokenAmount: BigNumber;
+ private transferrableMakerFeeTokenAmount: BigNumber;
+ private remainingMakerTokenAmount: BigNumber;
+ private remainingMakerFeeAmount: BigNumber;
+ constructor(signedOrder: SignedOrder,
+ isMakerTokenZRX: boolean,
+ transferrableMakerTokenAmount: BigNumber,
+ transferrableMakerFeeTokenAmount: BigNumber,
+ remainingMakerTokenAmount: BigNumber) {
+ this.signedOrder = signedOrder;
+ this.isMakerTokenZRX = isMakerTokenZRX;
+ this.transferrableMakerTokenAmount = transferrableMakerTokenAmount;
+ this.transferrableMakerFeeTokenAmount = transferrableMakerFeeTokenAmount;
+ this.remainingMakerTokenAmount = remainingMakerTokenAmount;
+ this.remainingMakerFeeAmount = remainingMakerTokenAmount.times(signedOrder.makerFee)
+ .dividedToIntegerBy(signedOrder.makerTokenAmount);
+ }
+ public computeRemainingMakerFillable(): BigNumber {
+ if (this.hasSufficientFundsForFeeAndTransferAmount()) {
+ return this.remainingMakerTokenAmount;
+ }
+ if (this.signedOrder.makerFee.isZero()) {
+ return BigNumber.min(this.remainingMakerTokenAmount, this.transferrableMakerTokenAmount);
+ }
+ return this.calculatePartiallyFillableMakerTokenAmount();
+ }
+ public computeRemainingTakerFillable(): BigNumber {
+ return this.computeRemainingMakerFillable().times(this.signedOrder.takerTokenAmount)
+ .dividedToIntegerBy(this.signedOrder.makerTokenAmount);
+ }
+ private hasSufficientFundsForFeeAndTransferAmount(): boolean {
+ if (this.isMakerTokenZRX) {
+ const totalZRXTransferAmountRequired = this.remainingMakerTokenAmount.plus(this.remainingMakerFeeAmount);
+ const hasSufficientFunds = this.transferrableMakerTokenAmount.greaterThanOrEqualTo(
+ totalZRXTransferAmountRequired);
+ return hasSufficientFunds;
+ } else {
+ const hasSufficientFundsForTransferAmount = this.transferrableMakerTokenAmount.greaterThanOrEqualTo(
+ this.remainingMakerTokenAmount);
+ const hasSufficientFundsForFeeAmount = this.transferrableMakerFeeTokenAmount.greaterThanOrEqualTo(
+ this.remainingMakerFeeAmount);
+ const hasSufficientFunds = hasSufficientFundsForTransferAmount && hasSufficientFundsForFeeAmount;
+ return hasSufficientFunds;
+ }
+ }
+ private calculatePartiallyFillableMakerTokenAmount(): BigNumber {
+ // Given an order for 200 wei for 2 ZRXwei fee, find 100 wei for 1 ZRXwei. Order ratio is then 100:1
+ const orderToFeeRatio = this.signedOrder.makerTokenAmount.dividedBy(this.signedOrder.makerFee);
+ // The number of times the maker can fill the order, if each fill only required the transfer of a single
+ // baseUnit of fee tokens.
+ // Given 2 ZRXwei, the maximum amount of times Maker can fill this order, in terms of fees, is 2
+ const fillableTimesInFeeTokenBaseUnits = BigNumber.min(this.transferrableMakerFeeTokenAmount,
+ this.remainingMakerFeeAmount);
+ // The number of times the Maker can fill the order, given the Maker Token Balance
+ // Assuming a balance of 150 wei, and an orderToFeeRatio of 100:1, maker can fill this order 1 time.
+ let fillableTimesInMakerTokenUnits = this.transferrableMakerTokenAmount.dividedBy(orderToFeeRatio);
+ if (this.isMakerTokenZRX) {
+ // If ZRX is the maker token, the Fee and the Maker amount need to be removed from the same pool;
+ // 200 ZRXwei for 2ZRXwei fee can only be filled once (need 202 ZRXwei)
+ const totalZRXTokenPooled = this.transferrableMakerTokenAmount;
+ // The purchasing power here is less as the tokens are taken from the same Pool
+ // For every one number of fills, we have to take an extra ZRX out of the pool
+ fillableTimesInMakerTokenUnits = totalZRXTokenPooled.dividedBy(
+ orderToFeeRatio.plus(new BigNumber(1)));
+
+ }
+ // When Ratio is not fully divisible there can be remainders which cannot be represented, so they are floored.
+ // This can result in a RoundingError being thrown by the Exchange Contract.
+ const partiallyFillableMakerTokenAmount = fillableTimesInMakerTokenUnits
+ .times(this.signedOrder.makerTokenAmount)
+ .dividedToIntegerBy(this.signedOrder.makerFee);
+ const partiallyFillableFeeTokenAmount = fillableTimesInFeeTokenBaseUnits
+ .times(this.signedOrder.makerTokenAmount)
+ .dividedToIntegerBy(this.signedOrder.makerFee);
+ const partiallyFillableAmount = BigNumber.min(partiallyFillableMakerTokenAmount,
+ partiallyFillableFeeTokenAmount);
+ return partiallyFillableAmount;
+ }
+}
diff --git a/packages/0x.js/src/types.ts b/packages/0x.js/src/types.ts
index 39e5fa9f2..c3aabfd86 100644
--- a/packages/0x.js/src/types.ts
+++ b/packages/0x.js/src/types.ts
@@ -392,10 +392,15 @@ export interface JSONRPCPayload {
}
/*
- * eventPollingIntervalMs: How often to poll the Ethereum node for new events
+ * orderExpirationCheckingIntervalMs: How often to check for expired orders. Default: 50
+ * eventPollingIntervalMs: How often to poll the Ethereum node for new events. Defaults: 200
+ * expirationMarginMs: Amount of time before order expiry that you'd like to be notified
+ * of an orders expiration. Defaults: 0
*/
export interface OrderStateWatcherConfig {
+ orderExpirationCheckingIntervalMs?: number;
eventPollingIntervalMs?: number;
+ expirationMarginMs?: number;
}
/*
diff --git a/packages/0x.js/src/utils/order_state_utils.ts b/packages/0x.js/src/utils/order_state_utils.ts
index 123584f90..1d8f02a18 100644
--- a/packages/0x.js/src/utils/order_state_utils.ts
+++ b/packages/0x.js/src/utils/order_state_utils.ts
@@ -17,6 +17,7 @@ import {utils} from '../utils/utils';
import {constants} from '../utils/constants';
import {OrderFilledCancelledLazyStore} from '../stores/order_filled_cancelled_lazy_store';
import {BalanceAndProxyAllowanceLazyStore} from '../stores/balance_proxy_allowance_lazy_store';
+import {RemainingFillableCalculator} from '../order_watcher/remaining_fillable_calculator';
const ACCEPTABLE_RELATIVE_ROUNDING_ERROR = 0.0001;
@@ -78,12 +79,17 @@ export class OrderStateUtils {
const remainingTakerTokenAmount = totalTakerTokenAmount.minus(unavailableTakerTokenAmount);
const remainingMakerTokenAmount = remainingTakerTokenAmount.times(totalMakerTokenAmount)
.dividedToIntegerBy(totalTakerTokenAmount);
- const fillableMakerTokenAmount = BigNumber.min([makerProxyAllowance, makerBalance]);
- const remainingFillableMakerTokenAmount = BigNumber.min(fillableMakerTokenAmount, remainingMakerTokenAmount);
- const remainingFillableTakerTokenAmount = remainingFillableMakerTokenAmount
- .times(totalTakerTokenAmount)
- .dividedToIntegerBy(totalMakerTokenAmount);
- // TODO: Handle edge case where maker token is ZRX with fee
+ const transferrableMakerTokenAmount = BigNumber.min([makerProxyAllowance, makerBalance]);
+ const transferrableFeeTokenAmount = BigNumber.min([makerFeeProxyAllowance, makerFeeBalance]);
+
+ const isMakerTokenZRX = signedOrder.makerTokenAddress === zrxTokenAddress;
+ const remainingFillableCalculator = new RemainingFillableCalculator(signedOrder,
+ isMakerTokenZRX,
+ transferrableMakerTokenAmount,
+ transferrableFeeTokenAmount,
+ remainingMakerTokenAmount);
+ const remainingFillableMakerTokenAmount = remainingFillableCalculator.computeRemainingMakerFillable();
+ const remainingFillableTakerTokenAmount = remainingFillableCalculator.computeRemainingTakerFillable();
const orderRelevantState = {
makerBalance,
makerProxyAllowance,
diff --git a/packages/0x.js/src/utils/order_validation_utils.ts b/packages/0x.js/src/utils/order_validation_utils.ts
index f03703c4e..ed723e3d4 100644
--- a/packages/0x.js/src/utils/order_validation_utils.ts
+++ b/packages/0x.js/src/utils/order_validation_utils.ts
@@ -102,7 +102,7 @@ export class OrderValidationUtils {
if (order.takerTokenAmount.eq(unavailableTakerTokenAmount)) {
throw new Error(ExchangeContractErrs.OrderAlreadyCancelledOrFilled);
}
- const currentUnixTimestampSec = utils.getCurrentUnixTimestamp();
+ const currentUnixTimestampSec = utils.getCurrentUnixTimestampSec();
if (order.expirationUnixTimestampSec.lessThan(currentUnixTimestampSec)) {
throw new Error(ExchangeContractErrs.OrderCancelExpired);
}
@@ -150,7 +150,7 @@ export class OrderValidationUtils {
}
}
private validateOrderNotExpiredOrThrow(expirationUnixTimestampSec: BigNumber) {
- const currentUnixTimestampSec = utils.getCurrentUnixTimestamp();
+ const currentUnixTimestampSec = utils.getCurrentUnixTimestampSec();
if (expirationUnixTimestampSec.lessThan(currentUnixTimestampSec)) {
throw new Error(ExchangeContractErrs.OrderFillExpired);
}
diff --git a/packages/0x.js/src/utils/utils.ts b/packages/0x.js/src/utils/utils.ts
index 280f3e979..5370c3b4b 100644
--- a/packages/0x.js/src/utils/utils.ts
+++ b/packages/0x.js/src/utils/utils.ts
@@ -49,7 +49,10 @@ export const utils = {
const hashHex = ethUtil.bufferToHex(hashBuff);
return hashHex;
},
- getCurrentUnixTimestamp(): BigNumber {
- return new BigNumber(Date.now() / 1000);
+ getCurrentUnixTimestampSec(): BigNumber {
+ return new BigNumber(Date.now() / 1000).round();
+ },
+ getCurrentUnixTimestampMs(): BigNumber {
+ return new BigNumber(Date.now());
},
};
diff --git a/packages/0x.js/src/web3_wrapper.ts b/packages/0x.js/src/web3_wrapper.ts
index c937f9288..7bd8ea093 100644
--- a/packages/0x.js/src/web3_wrapper.ts
+++ b/packages/0x.js/src/web3_wrapper.ts
@@ -5,6 +5,17 @@ import promisify = require('es6-promisify');
import {ZeroExError, Artifact, TransactionReceipt} from './types';
import {Contract} from './contract';
+interface RawLogEntry {
+ logIndex: string|null;
+ transactionIndex: string|null;
+ transactionHash: string;
+ blockHash: string|null;
+ blockNumber: string|null;
+ address: string;
+ data: string;
+ topics: string[];
+}
+
export class Web3Wrapper {
private web3: Web3;
private defaults: Partial<Web3.TxData>;
@@ -39,7 +50,9 @@ export class Web3Wrapper {
}
public async getTransactionReceiptAsync(txHash: string): Promise<TransactionReceipt> {
const transactionReceipt = await promisify(this.web3.eth.getTransactionReceipt)(txHash);
- transactionReceipt.status = this.normalizeTxReceiptStatus(transactionReceipt.status);
+ if (!_.isNull(transactionReceipt)) {
+ transactionReceipt.status = this.normalizeTxReceiptStatus(transactionReceipt.status);
+ }
return transactionReceipt;
}
public getCurrentProvider(): Web3.Provider {
@@ -137,8 +150,9 @@ export class Web3Wrapper {
method: 'eth_getLogs',
params: [serializedFilter],
};
- const logs = await this.sendRawPayloadAsync(payload);
- return logs;
+ const rawLogs = await this.sendRawPayloadAsync<RawLogEntry[]>(payload);
+ const formattedLogs = _.map(rawLogs, this.formatLog.bind(this));
+ return formattedLogs;
}
private getContractInstance<A extends Web3.ContractInstance>(abi: Web3.ContractAbi, address: string): A {
const web3ContractInstance = this.web3.eth.contract(abi).at(address);
@@ -149,7 +163,7 @@ export class Web3Wrapper {
const networkId = await promisify(this.web3.version.getNetwork)();
return networkId;
}
- private async sendRawPayloadAsync(payload: Web3.JSONRPCRequestPayload): Promise<any> {
+ private async sendRawPayloadAsync<A>(payload: Web3.JSONRPCRequestPayload): Promise<A> {
const sendAsync = this.web3.currentProvider.sendAsync.bind(this.web3.currentProvider);
const response = await promisify(sendAsync)(payload);
const result = response.result;
@@ -169,4 +183,20 @@ export class Web3Wrapper {
return status;
}
}
+ private formatLog(rawLog: RawLogEntry): Web3.LogEntry {
+ const formattedLog = {
+ ...rawLog,
+ logIndex: this.hexToDecimal(rawLog.logIndex),
+ blockNumber: this.hexToDecimal(rawLog.blockNumber),
+ transactionIndex: this.hexToDecimal(rawLog.transactionIndex),
+ };
+ return formattedLog;
+ }
+ private hexToDecimal(hex: string|null): number|null {
+ if (_.isNull(hex)) {
+ return null;
+ }
+ const decimal = this.web3.toDecimal(hex);
+ return decimal;
+ }
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-16 19:46:38 +0800