tustvold commented on code in PR #2309:
URL: https://github.com/apache/arrow-rs/pull/2309#discussion_r937526567
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arrow-flight/src/sql/server.rs:
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@@ -66,76 +67,87 @@ pub trait FlightSqlService:
&self,
query: CommandStatementQuery,
request: FlightDescriptor,
+ metadata: MetadataMap,
Review Comment:
I wonder if it might be better to modify `request` to be
`Request<FlightDescriptor>`. Not only would this provide access to the metadata
map, but also things like
[extensions](https://docs.rs/tonic/latest/tonic/struct.Request.html#method.extensions).
In particular extensions are a common way to allow middleware to extract
data from the headers, and make it easily accessible to downstreams.
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