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Posted to issues@arrow.apache.org by "aiguofer (via GitHub)" <gi...@apache.org> on 2023/06/13 20:48:36 UTC
[GitHub] [arrow-adbc] aiguofer opened a new issue, #713: python: custom headers not working
aiguofer opened a new issue, #713:
URL: https://github.com/apache/arrow-adbc/issues/713
Hi, I was trying to play around with the Python ADBC driver for FlightSQL to see if I could connect to a service we're building. Our service requires some custom headers, but when I try to set them it breaks.
Example code:
```
from adbc_driver_flightsql.dbapi import connect
def main():
conn = connect(
"grpc://localhost:9876",
conn_kwargs={
"adbc.flight.sql.rpc.call_header.customheader": "1",
},
)
cur = conn.cursor()
cur.execute("select * from table")
print(cur.fetch_arrow_table())
main()
```
error:
```
panic: interface conversion: interface is nil, not adbc.PostInitOptions
goroutine 17 [running, locked to thread]:
main.FlightSQLConnectionSetOption(0x1004537f8, 0x0?, 0x100453701?, 0x14000002680?)
/Users/runner/work/arrow-adbc/arrow-adbc/adbc/go/adbc/pkg/flightsql/driver.go:249 +0x70
```
I don't have much experience with go, much less with Python bindings on top of go, so I don't know how to even start debugging this. Any help would be greatly appreciated!
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[GitHub] [arrow-adbc] kou commented on issue #713: python: custom headers not working
Posted by "kou (via GitHub)" <gi...@apache.org>.
kou commented on issue #713:
URL: https://github.com/apache/arrow-adbc/issues/713#issuecomment-1565150446
Could you try `db_kwargs` instead of `conn_kwargs`?
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[GitHub] [arrow-adbc] lidavidm commented on issue #713: python: custom headers not working
Posted by "lidavidm (via GitHub)" <gi...@apache.org>.
lidavidm commented on issue #713:
URL: https://github.com/apache/arrow-adbc/issues/713#issuecomment-1565024847
Hmm. It looks like we just didn't implement the proper interface on the Go-side, and since this is basically duck-typed, it wasn't caught earlier. (We should cover this with more tests...)
I'll investigate more closely when I get a chance next week.
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[GitHub] [arrow-adbc] lidavidm commented on issue #713: python: custom headers not working
Posted by "lidavidm (via GitHub)" <gi...@apache.org>.
lidavidm commented on issue #713:
URL: https://github.com/apache/arrow-adbc/issues/713#issuecomment-1590006594
I'm reopening: there's a deeper underlying issue why your original sample crashed (db_kwargs is indeed the way but conn_kwargs shouldn't crash). The Go FFI wrapper doesn't account for calling SetOptions between New and Init and the Go APIs don't actually have a way to initialize a driver with arguments currently (so that'll have to go in 1.1.0).
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[GitHub] [arrow-adbc] aiguofer commented on issue #713: python: custom headers not working
Posted by "aiguofer (via GitHub)" <gi...@apache.org>.
aiguofer commented on issue #713:
URL: https://github.com/apache/arrow-adbc/issues/713#issuecomment-1565238398
ohh that worked! Thanks! I'll try to make a PR adding to the Python driver docs.
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[GitHub] [arrow-adbc] lidavidm closed issue #713: python: custom headers not working
Posted by "lidavidm (via GitHub)" <gi...@apache.org>.
lidavidm closed issue #713: python: custom headers not working
URL: https://github.com/apache/arrow-adbc/issues/713
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[GitHub] [arrow-adbc] aiguofer commented on issue #713: python: custom headers not working
Posted by "aiguofer (via GitHub)" <gi...@apache.org>.
aiguofer commented on issue #713:
URL: https://github.com/apache/arrow-adbc/issues/713#issuecomment-1570720781
Closing this issue. Will create docs PR as a followup.
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[GitHub] [arrow-adbc] aiguofer closed issue #713: python: custom headers not working
Posted by "aiguofer (via GitHub)" <gi...@apache.org>.
aiguofer closed issue #713: python: custom headers not working
URL: https://github.com/apache/arrow-adbc/issues/713
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