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add kafka topic/partition/offset to the extension of event #896

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merged 7 commits into from
May 25, 2023
Merged

add kafka topic/partition/offset to the extension of event #896

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2a574e8
add kafka partition/offset to the extension of event
yanmxa May 12, 2023
455fd8f
initialize header with kafka information
yanmxa May 14, 2023
e033080
fixed the integration test
yanmxa May 16, 2023
1ab33b9
fixed the sarama binding test issue
yanmxa May 17, 2023
22ddc6c
add check empty in the integration test
yanmxa May 23, 2023
cfac14f
verfiy the kafka topic value
yanmxa May 24, 2023
998a3a0
clarify the test code
yanmxa May 24, 2023
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12 changes: 9 additions & 3 deletions protocol/kafka_sarama/v2/message.go
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ package kafka_sarama
import (
"bytes"
"context"
"strconv"
"strings"

"github.com/cloudevents/sdk-go/v2/binding"
Expand Down Expand Up @@ -35,22 +36,27 @@ type Message struct {
}

// Check if http.Message implements binding.Message
var _ binding.Message = (*Message)(nil)
var _ binding.MessageMetadataReader = (*Message)(nil)
var (
_ binding.Message = (*Message)(nil)
_ binding.MessageMetadataReader = (*Message)(nil)
)

// NewMessageFromConsumerMessage returns a binding.Message that holds the provided ConsumerMessage.
// The returned binding.Message *can* be read several times safely
// This function *doesn't* guarantee that the returned binding.Message is always a kafka_sarama.Message instance
func NewMessageFromConsumerMessage(cm *sarama.ConsumerMessage) *Message {
var contentType string
headers := make(map[string][]byte, len(cm.Headers))
headers := make(map[string][]byte, len(cm.Headers)+3)
for _, r := range cm.Headers {
k := strings.ToLower(string(r.Key))
if k == contentTypeHeader {
contentType = string(r.Value)
}
headers[k] = r.Value
}
headers[prefix+"kafkaoffset"] = []byte(strconv.FormatInt(cm.Offset, 10))
headers[prefix+"kafkapartition"] = []byte(strconv.FormatInt(int64(cm.Partition), 10))
headers[prefix+"kafkatopic"] = []byte(cm.Topic)
return NewMessage(cm.Value, contentType, headers)
}

Expand Down