wehub-resource-sync
102 lines
4.1 KiB
C#
102 lines
4.1 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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*/
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using System;
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using NodaTime;
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using QuantConnect.Util;
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namespace QuantConnect.Lean.Engine.DataFeeds
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{
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/// <summary>
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/// Provides an implementation of <see cref="ITimeProvider"/> that can be
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/// manually advanced through time
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/// </summary>
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public class ManualTimeProvider : ITimeProvider
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{
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private volatile ReferenceWrapper<DateTime> _currentTime;
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private readonly DateTimeZone _setCurrentTimeTimeZone;
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/// <summary>
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/// Initializes a new instance of the <see cref="ManualTimeProvider"/>
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/// </summary>
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/// <param name="setCurrentTimeTimeZone">Specify to use this time zone when calling <see cref="SetCurrentTime"/>,
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/// leave null for the default of <see cref="TimeZones.Utc"/></param>
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public ManualTimeProvider(DateTimeZone setCurrentTimeTimeZone = null)
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{
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_setCurrentTimeTimeZone = setCurrentTimeTimeZone ?? TimeZones.Utc;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="ManualTimeProvider"/> class
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/// </summary>
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/// <param name="currentTime">The current time in the specified time zone, if the time zone is
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/// null then the time is interpreted as being in <see cref="TimeZones.Utc"/></param>
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/// <param name="setCurrentTimeTimeZone">Specify to use this time zone when calling <see cref="SetCurrentTime"/>,
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/// leave null for the default of <see cref="TimeZones.Utc"/></param>
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public ManualTimeProvider(DateTime currentTime, DateTimeZone setCurrentTimeTimeZone = null)
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: this(setCurrentTimeTimeZone)
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{
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_currentTime = new ReferenceWrapper<DateTime>(currentTime.ConvertToUtc(_setCurrentTimeTimeZone));
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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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return _currentTime.Value;
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}
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/// <summary>
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/// Sets the current time interpreting the specified time as a UTC time
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/// </summary>
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/// <param name="time">The current time in UTC</param>
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public void SetCurrentTimeUtc(DateTime time)
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{
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_currentTime = new ReferenceWrapper<DateTime>(time);
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}
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/// <summary>
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/// Sets the current time interpeting the specified time as a local time
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/// using the time zone used at instatiation.
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/// </summary>
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/// <param name="time">The local time to set the current time time, will be
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/// converted into UTC</param>
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public void SetCurrentTime(DateTime time)
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{
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SetCurrentTimeUtc(time.ConvertToUtc(_setCurrentTimeTimeZone));
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}
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/// <summary>
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/// Advances the current time by the specified span
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/// </summary>
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/// <param name="span">The amount of time to advance the current time by</param>
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public void Advance(TimeSpan span)
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{
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_currentTime = new ReferenceWrapper<DateTime>(_currentTime.Value + span);
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}
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/// <summary>
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/// Advances the current time by the specified number of seconds
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/// </summary>
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/// <param name="seconds">The number of seconds to advance the current time by</param>
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public void AdvanceSeconds(double seconds)
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{
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Advance(TimeSpan.FromSeconds(seconds));
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}
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}
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} |