34 lines
1.0 KiB
TypeScript
34 lines
1.0 KiB
TypeScript
import { PriceTicker } from '../common/priceTicker'
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import { StrategyBase } from './strategyBase'
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/**
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* Pricecaster Service.
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*
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* Fetcher backend component.
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*
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* Copyright 2022 Wormhole Project Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* This strategy just caches the last provided price,
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* acting as a single-item buffer.
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*/
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export class StrategyLastPrice extends StrategyBase {
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getPrice (): PriceTicker | undefined {
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const ret = this.buffer[this.buffer.length - 1]
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this.clearBuffer()
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return ret
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}
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}
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