wehub-resource-sync
59 lines
2.0 KiB
C#
59 lines
2.0 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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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 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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using System;
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using System.Linq;
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using System.Collections.Generic;
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namespace QuantConnect.Lean.Engine.DataFeeds
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{
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/// <summary>
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/// The composite time provider will source it's current time using the smallest time from the given providers
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/// </summary>
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public class CompositeTimeProvider : ITimeProvider
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{
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private readonly ITimeProvider[] _timeProviders;
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/// <summary>
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/// Creates a new instance
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/// </summary>
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/// <param name="timeProviders">The time providers to use. Will default to the real time provider if empty</param>
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public CompositeTimeProvider(IEnumerable<ITimeProvider> timeProviders)
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{
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_timeProviders = timeProviders.DefaultIfEmpty(RealTimeProvider.Instance).ToArray();
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}
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/// <summary>
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/// Gets the current time in UTC
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/// </summary>
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/// <returns>The current time in UTC</returns>
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public DateTime GetUtcNow()
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{
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var result = DateTime.MaxValue;
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for (var i = 0; i < _timeProviders.Length; i++)
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{
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var utcNow = _timeProviders[i].GetUtcNow();
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if (utcNow < result)
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{
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// we return the smallest
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result = utcNow;
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}
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}
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return result;
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}
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}
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}
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