[PR] Add optional layer field to browser protocol payloads [skywalking-data-collect-protocol]

["wu-sheng (via GitHub)" <gi...@apache.org>]

wu-sheng opened a new pull request, #122:
URL: https://github.com/apache/skywalking-data-collect-protocol/pull/122

   ### What changed
   This adds an optional `layer` field to browser protocol payloads in `browser/BrowserPerf.proto`:
   - `BrowserPerfData`
   - `BrowserErrorLog`
   - `BrowserWebVitalsPerfData`
   - `BrowserResourcePerfData`
   - `BrowserWebInteractionsPerfData`
   
   ### Why
   The current browser protocol assumes all browser-related telemetry belongs to the `BROWSER` layer.
   
   That works for web browser SDKs, but it is too restrictive for browser-like runtimes such as WeChat Mini Program. We need the protocol to carry an explicit layer hint so OAP can distinguish these runtimes while keeping backward compatibility.
   
   ### Compatibility
   This change is backward compatible:
   - existing clients can omit `layer`
   - receivers can continue treating a missing or unsupported `layer` as `BROWSER`
   
   ### Follow-up
   After this protocol change lands, OAP can add support for resolving the new field and introduce a dedicated layer such as `WECHAT_MINI_PROGRAM` while keeping `BROWSER` as the fallback.


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Re: [PR] Add optional layer field to browser protocol payloads [skywalking-data-collect-protocol]

["wu-sheng (via GitHub)" <gi...@apache.org>]

wu-sheng closed pull request #122: Add optional layer field to browser protocol payloads
URL: https://github.com/apache/skywalking-data-collect-protocol/pull/122


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