tobgu opened a new issue #3180: Go client Reader panics when passing custom StartMessageID URL: https://github.com/apache/pulsar/issues/3180 #### Expected behavior I can pass arbitrary type implementing the `pulsar.MessageID` interface in `pulsar.ReaderOptions`when creating a Reader instance. #### Actual behavior When I pass a custom type the client library panics: ```` panic: interface conversion: pulsar.MessageID is mypackage.pulsarMessageID, not *pulsar.messageID /usr/local/go/src/runtime/panic.go:513 +0x1b9 github.com/apache/pulsar/pulsar-client-go/pulsar.createReaderAsync(0xc0002229a0, 0xc0001fe29a, 0x9, 0x0, 0x0, 0xb800a0, 0xc0002fb6e0, 0xc00018dd40, 0x0, 0x0, ...) /go/pkg/mod/github.com/apache/pulsar@v2.2.0+incompatible/pulsar-client-go/pulsar/c_reader.go:115 +0x504 github.com/apache/pulsar/pulsar-client-go/pulsar.(*client).CreateReaderAsync(0xc0002229a0, 0xc0001fe29a, 0x9, 0x0, 0x0, 0xb800a0, 0xc0002fb6e0, 0x0, 0x0, 0x0, ...) /go/pkg/mod/github.com/apache/pulsar@v2.2.0+incompatible/pulsar-client-go/pulsar/c_client.go:220 +0x65 github.com/apache/pulsar/pulsar-client-go/pulsar.(*client).CreateReader(0xc0002229a0, 0xc0001fe29a, 0x9, 0x0, 0x0, 0xb800a0, 0xc0002fb6e0, 0x0, 0x0, 0x0, ...) /go/pkg/mod/github.com/apache/pulsar@v2.2.0+incompatible/pulsar-client-go/pulsar/c_client.go:207 +0xca ```` The culprit is the following line: ```go // Unchecked type assertion assuming that StartMessageID is of type *messageID C._pulsar_client_create_reader_async(client.ptr, topic, options.StartMessageID.(*messageID).ptr, conf, savePointer(&readerAndCallback{reader, conf, callback})) ``` #### Steps to reproduce See above #### System configuration **Pulsar version**: 2.2 github.com/apache/pulsar v2.2.0+incompatible h1:i2dfg67DNdHRgdzdIiSObTb9VRavAtZStxC4YIySxAI= github.com/apache/pulsar v2.2.0+incompatible/go.mod h1:7npmYEEu+jEeIMdpGSJwrTxUB86OW/UM5IkJCAyfl5Y= g
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
