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docs: add example for tracingTagFromResponseIfStatus #3348

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docs: add example for tracingTagFromResponseIfStatus #3348

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14 changes: 12 additions & 2 deletions docs/reference/filters.md
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Expand Up @@ -3361,16 +3361,26 @@ tracingTag("http.flow_id", "${request.header.X-Flow-Id}")

### tracingTagFromResponse

This filter works just like [tracingTag](#tracingtag), but is applied after the request was processed. In particular, [template placeholders](#template-placeholders) referencing the response can be used in the parameters.
This filter works just like [tracingTag](#tracingtag), but is applied after the request was processed.
In particular, [template placeholders](#template-placeholders) referencing the response can be used in the tag value.

### tracingTagFromResponseIfStatus

Example: set error tag to true in case response status code is `>= 500` and `<= 599`
This filter works like [tracingTagFromResponse](#tracingtagfromresponse)
but only for responses having status code from the specified range.

Example: set error tag to true in case response status code is `>= 500` and `<= 599`:

```
tracingTagFromResponseIfStatus("error", "true", 500, 599)
```

Example: set user id tag for ratelimited requests:

```
tracingTagFromResponseIfStatus("user.id", "${request.header.X-User-Id}", 429, 429) -> clusterClientRatelimit("user-id", 10, "1m", "X-User-Id")
```


### tracingSpanName

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