wehub-resource-sync
71 lines
2.6 KiB
C#
71 lines
2.6 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 Newtonsoft.Json;
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namespace QuantConnect.Util
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{
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/// <summary>
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/// Defines a <see cref="JsonConverter"/> that serializes <see cref="DateTime"/> use the number of whole and fractional seconds since unix epoch
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/// </summary>
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public class DoubleUnixSecondsDateTimeJsonConverter : TypeChangeJsonConverter<DateTime?, double?>
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{
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private static readonly DateTime UnixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
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/// <summary>
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/// Determines whether this instance can convert the specified object type.
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/// </summary>
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/// <param name="objectType">Type of the object.</param>
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/// <returns>
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/// <c>true</c> if this instance can convert the specified object type; otherwise, <c>false</c>.
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/// </returns>
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public override bool CanConvert(Type objectType)
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{
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return objectType == typeof(DateTime)
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|| objectType == typeof(DateTime?);
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}
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/// <summary>
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/// Convert the input value to a value to be serialzied
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/// </summary>
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/// <param name="value">The input value to be converted before serialziation</param>
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/// <returns>A new instance of TResult that is to be serialzied</returns>
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protected override double? Convert(DateTime? value)
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{
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if (value == null)
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{
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return null;
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}
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return (value.Value - UnixEpoch).TotalSeconds;
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}
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/// <summary>
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/// Converts the input value to be deserialized
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/// </summary>
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/// <param name="value">The deserialized value that needs to be converted to T</param>
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/// <returns>The converted value</returns>
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protected override DateTime? Convert(double? value)
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{
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if (value == null)
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{
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return null;
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}
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return UnixEpoch.AddSeconds(value.Value);
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}
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}
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} |