57 lines
1.9 KiB
C#
57 lines
1.9 KiB
C#
/*
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Copyright 2013 Google Inc
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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namespace Google.Apis.Util
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{
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/// <summary>Clock wrapper for getting the current time.</summary>
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public interface IClock
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{
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/// <summary>
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/// Gets a <see cref="System.DateTime"/> object that is set to the current date and time on this computer,
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/// expressed as the local time.
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/// </summary>
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[Obsolete("System local time is almost always inappropriate to use. If you really need this, call UtcNow and then call ToLocalTime on the result")]
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DateTime Now { get; }
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/// <summary>
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/// Gets a <see cref="System.DateTime"/> object that is set to the current date and time on this computer,
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/// expressed as UTC time.
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/// </summary>
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DateTime UtcNow { get; }
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}
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/// <summary>
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/// A default clock implementation that wraps the <see cref="System.DateTime.UtcNow"/>
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/// and <see cref="System.DateTime.Now"/> properties.
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/// </summary>
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public class SystemClock : IClock
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{
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/// <summary>Constructs a new system clock.</summary>
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protected SystemClock() { }
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/// <summary>The default instance.</summary>
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public static readonly IClock Default = new SystemClock();
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/// <inheritdoc/>
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public DateTime Now => DateTime.Now;
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/// <inheritdoc/>
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public DateTime UtcNow => DateTime.UtcNow;
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}
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}
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