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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2021/04/12 19:23:36 UTC

[GitHub] [pulsar-client-go] hunter2046 commented on a change in pull request #507: Expose NumPartitions() method on producer interface and GetHashingFunction() method

hunter2046 commented on a change in pull request #507:
URL: https://github.com/apache/pulsar-client-go/pull/507#discussion_r611894151



##########
File path: pulsar/producer.go
##########
@@ -199,3 +204,15 @@ type Producer interface {
 	// of errors, pending writes will not be retried.
 	Close()
 }
+
+// GetHashingFunction return the corresponding hashing function for the hashing scheme
+func GetHashingFunction(s HashingScheme) func(string) uint32 {

Review comment:
       We would like to mimic what the default router does including the hash function. The only difference would be to use a snapshotted numPartitions instead of a latest one that is from `TopicMetadata`: https://github.com/apache/pulsar-client-go/blob/6ab17dcca28db389ab91a4a2ea6e5ae990d613da/pulsar/producer_impl.go#L103




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