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feat: add the validate utils #32

Merged
merged 12 commits into from
Jul 20, 2023
Merged

feat: add the validate utils #32

merged 12 commits into from
Jul 20, 2023

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duguorong009
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@duguorong009 duguorong009 commented Jul 3, 2023

What kind of change does this PR introduce?

Add the validate utils for getting the actual validation errors thrown while validating the json schema and instance.

What is the current behavior?

Closes #14

What is the new behavior?

Receives the actual errors thrown, as Vec<String>

Additional context

@duguorong009 duguorong009 mentioned this pull request Jul 3, 2023
@olirice
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olirice commented Jul 5, 2023

hi @duguorong009 please take a look at the CI errors when you get a minute
thanks!

@duguorong009 duguorong009 marked this pull request as draft July 10, 2023 07:16
@duguorong009 duguorong009 marked this pull request as ready for review July 10, 2023 07:28
@olirice olirice self-requested a review July 10, 2023 20:14
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olirice commented Jul 11, 2023

sorry for the delay getting back to you, its been a hectic week
will leave a review nlt tomorrow

src/lib.rs Outdated
@@ -29,6 +29,64 @@ fn jsonschema_is_valid(schema: Json) -> bool {
}
}

#[pg_extern(immutable, strict)]
fn validate_json_schema(schema: Json, instance: Json) -> bool {
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@olirice olirice Jul 12, 2023

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From the linked issue I thought the goal was to produce functions that return an array of strings that described and errors that are present.

These two functions have identical signatures and behavior to json_matches_schema and jsonb_matches_schema but have raise notices that list the errors.

If that is the goal, why not update the existing two functions? e.g. is it a performance problem? if so, how big is the penalty?

If it is something like performance, an optional argument to the existing functions like on_error_raise that takes one of nothing (default), notice, or exception would be preferred to adding new functions

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Yes, there is performance problem.
From the doc, the jsonschema::is_valid is much faster than validate function.

Anyhow, I removed the new functions, and updated the existing functions as recommended.
Please re-check it. @olirice

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olirice commented Jul 18, 2023

@duguorong009 sorry for the back and forth

It's not clear to me what we're solving here. #14 requested exposing validate() which I understood to mean adding a function that would return an array of error strings.

Given that there is a performance hit for using validate vs is_valid we're trading performance for hints.

But check constraints won't bubble up those hints, logs would need to be set to verbose to include hints, and supabase studio doesn't display hints (AO 2023-07). So the only time the hints would be visible is if a user interactively connected to the database. Due to that, I'm not sure this is an appropriate trade to make.


If you'd be interested in changing this to a single immutable function (json only, not jsonb)

fn jsonschema_validation_errors(schema: Json, instance: Json) -> Vec<String>

that returns an array of errors or an empty array (if there are no errors) I'd be happy to approve

thanks!

@duguorong009
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@duguorong009 sorry for the back and forth

It's not clear to me what we're solving here. #14 requested exposing validate() which I understood to mean adding a function that would return an array of error strings.

Given that there is a performance hit for using validate vs is_valid we're trading performance for hints.

But check constraints won't bubble up those hints, logs would need to be set to verbose to include hints, and supabase studio doesn't display hints (AO 2023-07). So the only time the hints would be visible is if a user interactively connected to the database. Due to that, I'm not sure this is an appropriate trade to make.

If you'd be interested in changing this to a single immutable function (json only, not jsonb)

fn jsonschema_validation_errors(schema: Json, instance: Json) -> Vec<String>

that returns an array of errors or an empty array (if there are no errors) I'd be happy to approve

thanks!

Thanks for the detailed tips! @olirice

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olirice commented Jul 19, 2023

looks good

please include tests for 0 errors, 1 error, and multiple errors:

e.g.

// No errors
crate::jsonschema_validation_errors(
    Json(json!({ "maxLength": 4 })),
    Json(json!("foo")),
)

// One error
crate::jsonschema_validation_errors(
    Json(json!({ "maxLength": 4 })),
    Json(json!("123456789")),
)

// Multiple errors
crate::jsonschema_validation_errors(
    Json(json!(
    {
        "type": "object",
        "properties": {
            "foo": {
                "type": "string"
            },
            "bar": {
                "type": "number"
            },
            "baz": {
                "type": "boolean"
            },
            "additionalProperties": false,
            "required": ["foo", "bar", "baz"]
        }
    })),
    Json(json!({"foo": 1, "bar": [], "bat": true})),
)

src/lib.rs Outdated
})),
Json(json!({"foo": 1, "bar": [], "bat": true})),
);
assert!(errors.len() == 1);
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there should be multiple errors on this one

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Thanks for comment!
Will update! @olirice

@olirice olirice merged commit 0d286ed into supabase:master Jul 20, 2023
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olirice commented Jul 20, 2023

thanks!

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Expose validate()
2 participants