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Support round trip serialization of AuthenticationProperties with System.Text.Json #31330

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merged 3 commits into from
Mar 31, 2021
Merged

Support round trip serialization of AuthenticationProperties with System.Text.Json #31330

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bf81ce3
Support roundtrip serialization with S.T.Json
martincostello Mar 28, 2021
89e21ba
Refactor test
martincostello Mar 28, 2021
51a7085
Add comment for clarity
martincostello Mar 29, 2021
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2 changes: 2 additions & 0 deletions src/Http/Authentication.Abstractions/src/AuthenticationProperties.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Text.Json.Serialization;

namespace Microsoft.AspNetCore.Authentication
{
Expand All @@ -30,6 +31,7 @@ public AuthenticationProperties()
/// Initializes a new instance of the <see cref="AuthenticationProperties"/> class.
/// </summary>
/// <param name="items">State values dictionary to use.</param>
[JsonConstructor]
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Why this one?

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I went with this one as the comment on the Parameters property said it wasn't intended to be used for serialisation/persistence.

I did consider adding [JsonIgnore] to that property, but adding the attribute here had the same effect.

public AuthenticationProperties(IDictionary<string, string?> items)
: this(items, parameters: null)
{ }
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36 changes: 36 additions & 0 deletions src/Http/Authentication.Core/test/AuthenticationPropertiesTests.cs
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Expand Up @@ -2,6 +2,7 @@
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text.Json;
using Xunit;

namespace Microsoft.AspNetCore.Authentication.Core.Test
Expand Down Expand Up @@ -302,6 +303,41 @@ public void GetBool()
Assert.Equal("BAR", props.Items["foo"]);
}

[Fact]
public void Roundtrip_Serializes_With_SystemTextJson()
{
var props = new AuthenticationProperties()
{
AllowRefresh = true,
ExpiresUtc = new DateTimeOffset(2021, 03, 28, 13, 47, 00, TimeSpan.Zero),
IssuedUtc = new DateTimeOffset(2021, 03, 28, 12, 47, 00, TimeSpan.Zero),
IsPersistent = true,
RedirectUri = "/foo/bar"
};

props.Items.Add("foo", "bar");

props.Parameters.Add("baz", "quux");

var json = JsonSerializer.Serialize(props);
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Can you give a quick example of the serialized output? I want to make sure it doesn't contain the Parameters collection. This test only verifies the that the Parameters are not deserialized.

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Sure - will post something shortly.

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So .NET 5.0 and this PR serialize it like this:

{
  "Items": {
    ".refresh": "True",
    ".expires": "Sun, 28 Mar 2021 13:47:00 GMT",
    ".issued": "Sun, 28 Mar 2021 12:47:00 GMT",
    ".persistent": "",
    ".redirect": "/foo/bar",
    "foo": "bar"
  },
  "Parameters": {
    "baz": "quux"
  },
  "IsPersistent": true,
  "RedirectUri": "/foo/bar",
  "IssuedUtc": "2021-03-28T12:47:00+00:00",
  "ExpiresUtc": "2021-03-28T13:47:00+00:00",
  "AllowRefresh": true
}

If I add [JsonIgnore] to Parameters, then I get this:

{
  "Items": {
    ".refresh": "True",
    ".expires": "Sun, 28 Mar 2021 13:47:00 GMT",
    ".issued": "Sun, 28 Mar 2021 12:47:00 GMT",
    ".persistent": "",
    ".redirect": "/foo/bar",
    "foo": "bar"
  },
  "IsPersistent": true,
  "RedirectUri": "/foo/bar",
  "IssuedUtc": "2021-03-28T12:47:00+00:00",
  "ExpiresUtc": "2021-03-28T13:47:00+00:00",
  "AllowRefresh": true
}

Would you like me to open a PR to explicitly exclude Parameters from the serialized payload?

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Yes please.

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Actually, we should take this further and avoid serializing any of the properties, only the Items.

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#31414

props = JsonSerializer.Deserialize<AuthenticationProperties>(json);
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Assert.NotNull(props);
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Assert.True(props!.AllowRefresh);
Assert.Equal(new DateTimeOffset(2021, 03, 28, 13, 47, 00, TimeSpan.Zero), props.ExpiresUtc);
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Assert.Equal(new DateTimeOffset(2021, 03, 28, 12, 47, 00, TimeSpan.Zero), props.IssuedUtc);
Assert.True(props.IsPersistent);
Assert.Equal("/foo/bar", props.RedirectUri);

Assert.NotNull(props.Items);
Assert.True(props.Items.ContainsKey("foo"));
Assert.Equal("bar", props.Items["foo"]);

Assert.NotNull(props.Parameters);
Assert.Equal(0, props.Parameters.Count);
}

public class MyAuthenticationProperties : AuthenticationProperties
{
public new DateTimeOffset? GetDateTimeOffset(string key)
Expand Down