mkristofik commented on issue #33839:
URL: https://github.com/apache/arrow/issues/33839#issuecomment-1402056272
Here's the workaround I'm using, which seems to do what I want thus far.
Could someone confirm whether this is a valid approach?
```java
private static class HeaderMiddleware implements FlightClientMiddleware {
private final Map<String, String> headers;
private HeaderMiddleware(Map<String, String> headers) {
this.headers = headers;
}
@Override
public void onBeforeSendingHeaders(CallHeaders outgoingHeaders) {
for (Map.Entry<String, String> kv : headers.entrySet()) {
outgoingHeaders.insert(kv.getKey(), kv.getValue());
}
}
@Override public void onHeadersReceived(CallHeaders headers) { }
@Override public void onCallCompleted(CallStatus status) { }
static class Factory implements FlightClientMiddleware.Factory {
Map<String, String> headers;
Factory(Map<String, String> headers) {
this.headers = headers;
}
@Override
public FlightClientMiddleware onCallStarted(CallInfo info) {
return new HeaderMiddleware(headers);
}
}
}
```
And then the construction of the client...
```java
BufferAllocator alloc = /* ... */
Location loc = /* ... */
Map<String, String> headers = /* ... */
FlightClient client = FlightClient.builder(alloc, loc)
.intercept(new HeaderMiddleware.Factory(headers))
.build();
```
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