Question about extension concurrency

[vassilvk]

Given an extension for a keyword, if the keyword is found multiple times in a document, the extension schema's Validate method will be invoked once per keyword occurrence.

The question is, will those Validate calls be made concurrently? If the extension is used to accumulate state from within Validate, should one protect against race conditions?

[santhosh-tekuri]

there are no go routines created during Compile\Validate. so no need to protect against race conditions

but note that user may call validate from multiple go-routines.

I am not sure where do you want to maintain state. if you are planing to store in ExtSchema implementation. please do not do that. since users may be calling schema.validate from multiple routines.

currently I don't think the extension api has any provision to store state within single schema validate call

[vassilvk]

Thank you @santhosh-tekuri,

but note that user may call validate from multiple go-routine

Understood. In my use case I am in control of calls to the top (*Schema).Validate for a given compiled schema, so there's no scenario in which (*Schema).Validate itself will be called concurrently. The question was about concurrency on calls to (*ExtSchema).Validate spawned from a single call to (*Schema).Validate.

Thanks for your prompt answer :)

[santhosh-tekuri]

There is no concurrency used in the library