Provide guidance on $id keyword #158
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codeboten
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Feb 19, 2025
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| Each schema has an optional [`$id`](https://json-schema.org/understanding-json-schema/basics#declaring-a-unique-identifier) defining a unique identifier for the schema. Schemas and subschemas can be referenced in other schemas using the [`$ref`](https://json-schema.org/understanding-json-schema/structuring#dollarref) keyword, which resolves against the schema's [base URI](https://json-schema.org/understanding-json-schema/structuring#base-uri) (i.e. the `$id` of the top level schema document) using [JSON pointer](https://json-schema.org/understanding-json-schema/structuring#json-pointer) syntax. | ||
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| All top level schema documents should contain a `$id` field following the form `https://opentelemetry.io/otelconfig/<name>.json`. Subschemas nested in `$defs` should not include an `$id`, and should be resolved using `$ref`s relative to their top level schema document. |
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should we have a version identifier in this path?
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More codifying existing practices as we approach stability.
See JSON schema docs on $id and other links in the PR for context.
It may be good to eventually have automation that makes these documents accessible on
opentelemetry.io, but I don't think that's strictly necessary. Base on my read of these docs, its sufficient for the URL to be in our control.Actually requiring upload to opentelemetry.io would require thinking about if we should encode version into the URI scheme and how that affects development in this repo. I.e. is it
https://opentelemetry.io/otelconfig/opentelemetry_configuration.jsonorhttps://opentelemetry.io/otelconfig/<version>/opentelemetry_configuration.json?Its not clear to me what we gain by making these URLs resolve on opentelemetry.io. I do think we should open an issue on https://github.com/open-telemetry/opentelemetry.io to reserve the
https://opentelemetry.io/otelconfig/path, in case we need it in the future.Thoughts?