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Remove duplicates from topics #2268

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Remove duplicates from topics #2268

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3 changes: 3 additions & 0 deletions consumer_group.go
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Original file line number Diff line number Diff line change
Expand Up @@ -188,6 +188,9 @@ func (c *consumerGroup) Consume(ctx context.Context, topics []string, handler Co
return fmt.Errorf("no topics provided")
}

// Remove duplicates in topics slice
topics = getUniqueKeys(topics)

// Refresh metadata for requested topics
if err := c.client.RefreshMetadata(topics...); err != nil {
return err
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12 changes: 12 additions & 0 deletions utils.go
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Original file line number Diff line number Diff line change
Expand Up @@ -266,3 +266,15 @@ func (v KafkaVersion) String() string {

return fmt.Sprintf("%d.%d.%d", v.version[0], v.version[1], v.version[2])
}

func getUniqueKeys(strSlice []string) []string {
allKeys := make(map[string]bool)
list := []string{}
for _, item := range strSlice {
if _, value := allKeys[item]; !value {
allKeys[item] = true
list = append(list, item)
}
}
return list
}