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-rw-r--r--packages/order-utils/src/store/order_filled_cancelled_lazy_store.ts65
1 files changed, 65 insertions, 0 deletions
diff --git a/packages/order-utils/src/store/order_filled_cancelled_lazy_store.ts b/packages/order-utils/src/store/order_filled_cancelled_lazy_store.ts
new file mode 100644
index 000000000..4b1ad70b6
--- /dev/null
+++ b/packages/order-utils/src/store/order_filled_cancelled_lazy_store.ts
@@ -0,0 +1,65 @@
+import { BigNumber } from '@0xproject/utils';
+import * as _ from 'lodash';
+
+import { AbstractOrderFilledCancelledFetcher } from '../abstract/abstract_order_filled_cancelled_fetcher';
+import { AbstractOrderFilledCancelledLazyStore } from '../abstract/abstract_order_filled_cancelled_lazy_store';
+
+/**
+ * Copy on read store for balances/proxyAllowances of tokens/accounts
+ */
+export class OrderFilledCancelledLazyStore implements AbstractOrderFilledCancelledLazyStore {
+ private _orderFilledCancelledFetcher: AbstractOrderFilledCancelledFetcher;
+ private _filledTakerAmount: {
+ [orderHash: string]: BigNumber;
+ };
+ private _isCancelled: {
+ [orderHash: string]: boolean;
+ };
+ constructor(orderFilledCancelledFetcher: AbstractOrderFilledCancelledFetcher) {
+ this._orderFilledCancelledFetcher = orderFilledCancelledFetcher;
+ this._filledTakerAmount = {};
+ this._isCancelled = {};
+ }
+ public async getFilledTakerAmountAsync(orderHash: string): Promise<BigNumber> {
+ if (_.isUndefined(this._filledTakerAmount[orderHash])) {
+ const filledTakerAmount = await this._orderFilledCancelledFetcher.getFilledTakerAmountAsync(orderHash);
+ this.setFilledTakerAmount(orderHash, filledTakerAmount);
+ }
+ const cachedFilledTakerAmount = this._filledTakerAmount[orderHash];
+ return cachedFilledTakerAmount;
+ }
+ public setFilledTakerAmount(orderHash: string, filledTakerAmount: BigNumber): void {
+ this._filledTakerAmount[orderHash] = filledTakerAmount;
+ }
+ public deleteFilledTakerAmount(orderHash: string): void {
+ delete this._filledTakerAmount[orderHash];
+ }
+ public async getIsCancelledAsync(orderHash: string): Promise<boolean> {
+ if (_.isUndefined(this._isCancelled[orderHash])) {
+ const isCancelled = await this._orderFilledCancelledFetcher.isOrderCancelledAsync(orderHash);
+ this.setIsCancelled(orderHash, isCancelled);
+ }
+ const cachedIsCancelled = this._isCancelled[orderHash]; // tslint:disable-line:boolean-naming
+ return cachedIsCancelled;
+ }
+ public setIsCancelled(orderHash: string, isCancelled: boolean): void {
+ this._isCancelled[orderHash] = isCancelled;
+ }
+ public deleteIsCancelled(orderHash: string): void {
+ delete this._isCancelled[orderHash];
+ }
+ public deleteAll(): void {
+ this.deleteAllFilled();
+ this.deleteAllIsCancelled();
+ }
+ public deleteAllIsCancelled(): void {
+ this._isCancelled = {};
+ }
+ public deleteAllFilled(): void {
+ this._filledTakerAmount = {};
+ }
+ public getZRXAssetData(): string {
+ const zrxAssetData = this._orderFilledCancelledFetcher.getZRXAssetData();
+ return zrxAssetData;
+ }
+}