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[cmdpal] protect cmdpal from crash if adaptive card fails (#39264)

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<!-- Enter a brief description/summary of your PR here. What does it fix/what does it change/how was it tested (even manually, if necessary)? -->
## Summary of the Pull Request
     
Card = AdaptiveCard.FromJsonString(cardJson) is called in catch block, if it fails, app will crash.
This commit is contained in:
Kai Tao
2025-05-07 06:07:32 +08:00
committed by GitHub
parent 5655c61794
commit 6a1999d601
1 changed files with 52 additions and 27 deletions
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79
src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/ContentFormViewModel.cs
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@@ -6,6 +6,7 @@ using System.Text.Json;
using AdaptiveCards.ObjectModel.WinUI3;
using AdaptiveCards.Templating;
using CommunityToolkit.Mvvm.Messaging;
using ManagedCommon;
using Microsoft.CmdPal.UI.ViewModels.Messages;
using Microsoft.CmdPal.UI.ViewModels.Models;
using Microsoft.CommandPalette.Extensions;
@@ -28,43 +29,67 @@ public partial class ContentFormViewModel(IFormContent _form, WeakReference<IPag
public AdaptiveCardParseResult? Card { get; private set; }
private static string Serialize(string? s) =>
JsonSerializer.Serialize(s, JsonSerializationContext.Default.String);
private static bool TryBuildCard(
string templateJson,
string dataJson,
out AdaptiveCardParseResult? card,
out Exception? error)
{
card = null;
error = null;
try
{
var template = new AdaptiveCardTemplate(templateJson);
var cardJson = template.Expand(dataJson);
card = AdaptiveCard.FromJsonString(cardJson);
return true;
}
catch (Exception ex)
{
Logger.LogError("Error building card from template: {Message}", ex.Message);
error = ex;
return false;
}
}
public override void InitializeProperties()
{
var model = _formModel.Unsafe;
if (model == null)
if (model is null)
{
return;
}
try
{
TemplateJson = model.TemplateJson;
StateJson = model.StateJson;
DataJson = model.DataJson;
TemplateJson = model.TemplateJson;
StateJson = model.StateJson;
DataJson = model.DataJson;
AdaptiveCardTemplate template = new(TemplateJson);
var cardJson = template.Expand(DataJson);
Card = AdaptiveCard.FromJsonString(cardJson);
if (TryBuildCard(TemplateJson, DataJson, out var builtCard, out var renderingError))
{
Card = builtCard;
UpdateProperty(nameof(Card));
return;
}
catch (Exception e)
{
// If we fail to parse the card JSON, then display _our own card_
// with the exception
AdaptiveCardTemplate template = new(ErrorCardJson);
var serializeString = (string? s) => JsonSerializer.Serialize(s, JsonSerializationContext.Default.String);
// todo: we could probably stick Card.Errors in there too
var dataJson = $$"""
{
"error_message": {{serializeString(e.Message)}},
"error_stack": {{serializeString(e.StackTrace)}},
"inner_exception": {{serializeString(e.InnerException?.Message)}},
"template_json": {{serializeString(TemplateJson)}},
"data_json": {{serializeString(DataJson)}}
}
""";
var cardJson = template.Expand(dataJson);
Card = AdaptiveCard.FromJsonString(cardJson);
var errorPayload = $$"""
{
"error_message": {{Serialize(renderingError!.Message)}},
"error_stack": {{Serialize(renderingError.StackTrace)}},
"inner_exception": {{Serialize(renderingError.InnerException?.Message)}},
"template_json": {{Serialize(TemplateJson)}},
"data_json": {{Serialize(DataJson)}}
}
""";
if (TryBuildCard(ErrorCardJson, errorPayload, out var errorCard, out var _))
{
Card = errorCard;
UpdateProperty(nameof(Card));
return;
}
UpdateProperty(nameof(Card));