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fix(ai-statistics): skip empty streaming model values (#3851)

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Signed-off-by: jianwei.wjw <jianwei.wjw@alibaba-inc.com>
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JianweiWang
2026-06-02 12:10:46 +08:00
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parent 52c99eb27d
commit a45b1dde6c
4 changed files with 180 additions and 2 deletions
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plugins/wasm-go/extensions/ai-statistics/README_EN.md
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@@ -60,6 +60,8 @@ When `value_source` is `response_streaming_body`, `rule` should be configured to
- `replace`: extract value from the last valid chunk
- `append`: join value pieces from all valid chunks
Note: for `first` and `replace`, a valid chunk excludes missing paths, JSON `null`, and empty string `""` results. If no chunk contains a valid value, the extracted result is `nil`; configurations that depend on an empty string as an explicit upstream clear signal should account for this behavior difference. The `append` rule keeps its existing concatenation behavior.
### Built-in Attributes
The plugin provides several built-in attribute keys that can be used directly without configuring `value_source` and `value`. These built-in attributes automatically extract corresponding values from requests/responses: