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Brian Landers e0d30b75db Add SASL/SCAM support to Kafka transport. (#121)
This pull request adds the optional -transport.kafka.scram flag,
which tells the Kafka transport to use SASL/SCRAM for authentication.
This allows goflow2 to work with AWS Managed Service for Kafka (MSK)
which does not support SASL/PLAIN.

Co-authored-by: Brian Landers <brian.landers@meraki.net>
Co-authored-by: lspgn <lspgn@users.noreply.github.com>
2022-10-08 15:02:22 -07:00

40 lines
856 B
Go

package kafka
// From https://github.com/Shopify/sarama/blob/main/examples/sasl_scram_client/scram_client.go
import (
"crypto/sha256"
"crypto/sha512"
"github.com/xdg-go/scram"
)
var (
SHA256 scram.HashGeneratorFcn = sha256.New
SHA512 scram.HashGeneratorFcn = sha512.New
)
type XDGSCRAMClient struct {
*scram.Client
*scram.ClientConversation
scram.HashGeneratorFcn
}
func (x *XDGSCRAMClient) Begin(userName, password, authzID string) (err error) {
x.Client, err = x.HashGeneratorFcn.NewClient(userName, password, authzID)
if err != nil {
return err
}
x.ClientConversation = x.Client.NewConversation()
return nil
}
func (x *XDGSCRAMClient) Step(challenge string) (response string, err error) {
response, err = x.ClientConversation.Step(challenge)
return
}
func (x *XDGSCRAMClient) Done() bool {
return x.ClientConversation.Done()
}