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Is the JSON received from

stack output

a only ever 1 layer deep, or can it return nested objects? If it's only ever 1 layer deep and I can return all the values as strings than that may be fine.

FWIW, the go implementation uses dynamic typing to accomplish this (interface{}) and it's fairly painful to consume as a result. Here's an example of the type assertions required to consume outputs in the Go Automation API: https://github.com/pulumi/halloumi/blob/main/go/pkg/orchestrator/orchestrator.go#L132-L139 I wouldn't be surprised if it was similarly messy to consume outputs in dotnet. cc @tall-librarian-49374

JSON may contain nested objects. Would something like this work? https://stackoverflow.com/a/47046191/1171619

you mean specifically that the result of

stack output

can return nested objects? Up until this point I have been using

System.Text.Json

not newtonsoft so I would have to switch.

stack output

 can return nested objects?

yes

unfortunately if you deserialize to

Dictionary<string, object>

in System.Text.Json what you get back is

Dictionary<string, JsonElement>

It sounds wrong to switch dependencies because of that. Maybe assume

Dictionary<string, string>

for now and leave a todo to write a recursive conversion

well

System.Text.Json

is throwing me an exception if I try to deserialize JSON that has nested objects to

Dictionary<string, string>

. It doesn't just place the raw string in the value it just fails

That’s whay is printed for secret outputs https://github.com/pulumi/pulumi/blob/8e8129012e5c1f2883de86478620e9e32474e660/sdk/nodejs/x/automation/stack.ts#L25

Oh perfect I don’t know why I didn’t see that. Thank you.

Yup, a good way to reverse engineer some of this stuff is to just poke around with a dev stack and the CLI commands that are invoked.

@bored-oyster-3147 Why is

Dictionary<string, JsonElement>

not enough? From JsonElement, it should be possible to inspect it's type (i.e. JObject, JArray, JValue).

well, first of all

JObject

,

JArray

, &

JValue

are all Newtonsoft types, not System.Text.Json. System.Text.Json uses

JsonElement

to universally describe all JSON tokens. If it is a nested object, than the value will be

JsonElement

with a

TokenType == Object

. And I would need to figure out how to get some kind of instance out of that so that I can return an

OutputValue

. Our

OutputValue

looks like this:

{
    object Value,
    bool IsSecret
}

And we don't want to expose

JsonElement

. meaning we shouldn't be returning an

OutputValue

where

OutputValue.Value

at runtime is

JsonElement

. With newtonsoft, If I deserialize to

Dictionary<string, object>

than if it is a nested object it will just be another

Dictionary<string, object>

, recursively, until completion. Meaning

OutputValue.Value

at runtime will be

Dictionary<string, object>

rather than exposing a serialization type

This converter handles primitives: https://github.com/dotnet/runtime/blob/3e4a06c0e90e65c0ad514d8e2a9f93cb584d775a/sr[…]em.Text.Json/tests/Serialization/CustomConverterTests.Object.cs

we do return

Dictionary<string, OutputValue>

. checkout the function here The converter you linked is interesting, but it is also not a public converter - it is only used for some tests temporarily. It also isn't recursively returning dictionaries if the value is a complex object. It also falls back to

JsonElement

if it cant parse the type... which means we would possibly be returning

JsonElement

It's just a sample. We can copy it and change it however we want. I'd be willing to work on this.

the issue is the reinvention of the wheel, why try to come up with a converter that exhaustively handles all possible conversions and then needs to test all those possibilities if newtonsoft is already doing that and testing it?

Yeah, I'm just surprised no one has created a full converter yet. Json.Net is kind of dead (or dying). The author works for Microsoft on

System.Text.Json

now.

hmmm i don't think so? I mean I know he works at that but there has been no kind of update that JSON.Net will be abandoned anytime soon. Do you have a blog post saying as much?

I guess it’s just an assumption for how Microsoft works with open source 😉

Not explicitly, but there hasn't been a release in over a year, there have only been 9 commits since 2019 and then there's this comment where someone says "this repo is (almost) dead", and James does not correct him.

alright i'm hearing ya'll. I actually just wrote this:

private class SystemObjectJsonConverter : JsonConverter<object>
        {
            public override object Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
            {
                if (reader.TokenType == JsonTokenType.True)
                {
                    return true;
                }

                if (reader.TokenType == JsonTokenType.False)
                {
                    return false;
                }

                if (reader.TokenType == JsonTokenType.Number)
                {
                    if (reader.TryGetInt64(out long l))
                    {
                        return l;
                    }

                    return reader.GetDouble();
                }

                if (reader.TokenType == JsonTokenType.String)
                {
                    if (reader.TryGetDateTime(out DateTime datetime))
                    {
                        return datetime;
                    }

                    return reader.GetString();
                }

                if (reader.TokenType == JsonTokenType.StartArray)
                {
                    return JsonSerializer.Deserialize<object[]>(ref reader, options);
                }

                if (reader.TokenType == JsonTokenType.StartObject)
                {
                    var dictionary = new Dictionary<string, object>();

                    reader.Read();
                    while (reader.TokenType != JsonTokenType.EndObject)
                    {
                        if (reader.TokenType != JsonTokenType.PropertyName)
                            throw new JsonException("Expecting property name.");

                        var propertyName = reader.GetString();

                        reader.Read();
                        var value = JsonSerializer.Deserialize<object>(ref reader, options);
                        dictionary[propertyName] = value;

                        reader.Read();
                    }

                    return dictionary;
                }

                throw new JsonException("Invalid JSON element.");
            }

            public override void Write(Utf8JsonWriter writer, object value, JsonSerializerOptions options)
            {
                throw new NotSupportedException($"Writing as [{typeof(object).FullName}] is not supported.");
            }
        }