Skip to content

feat(output): add custom headers support to kafka #898

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
senthilsam wants to merge 4 commits into
base: main
Choose a base branch
from
Open

feat(output): add custom headers support to kafka #898

Changes from 1 commit
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
5258504
feat(output): add custom headers support to kafka
senthilsam Jul 25, 2026
5cbef6c
updated rc
senthilsam Aug 15, 2026
0d6c937
updated rc
senthilsam Aug 15, 2026
b1ed9a9
Merge branch 'feat/add_kafka_headers' of github-gnmic:senthilsam/gnmi…
senthilsam Aug 16, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
91 changes: 61 additions & 30 deletions pkg/outputs/kafka_output/kafka_output.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -100,32 +100,33 @@ type dynConfig struct {

// config //
type config struct {
Address string `mapstructure:"address,omitempty"`
Topic string `mapstructure:"topic,omitempty"`
TopicPrefix string `mapstructure:"topic-prefix,omitempty"`
Name string `mapstructure:"name,omitempty"`
SASL *types.SASL `mapstructure:"sasl,omitempty"`
TLS *types.TLSConfig `mapstructure:"tls,omitempty"`
MaxRetry int `mapstructure:"max-retry,omitempty"`
Timeout time.Duration `mapstructure:"timeout,omitempty"`
RecoveryWaitTime time.Duration `mapstructure:"recovery-wait-time,omitempty"`
FlushFrequency time.Duration `mapstructure:"flush-frequency,omitempty"`
SyncProducer bool `mapstructure:"sync-producer,omitempty"`
RequiredAcks string `mapstructure:"required-acks,omitempty"`
Format string `mapstructure:"format,omitempty"`
InsertKey bool `mapstructure:"insert-key,omitempty"`
AddTarget string `mapstructure:"add-target,omitempty"`
TargetTemplate string `mapstructure:"target-template,omitempty"`
MsgTemplate string `mapstructure:"msg-template,omitempty"`
SplitEvents bool `mapstructure:"split-events,omitempty"`
NumWorkers int `mapstructure:"num-workers,omitempty"`
CompressionCodec string `mapstructure:"compression-codec,omitempty"`
KafkaVersion string `mapstructure:"kafka-version,omitempty"`
Debug bool `mapstructure:"debug,omitempty"`
BufferSize int `mapstructure:"buffer-size,omitempty"`
OverrideTimestamps bool `mapstructure:"override-timestamps,omitempty"`
EnableMetrics bool `mapstructure:"enable-metrics,omitempty"`
EventProcessors []string `mapstructure:"event-processors,omitempty"`
Address string `mapstructure:"address,omitempty"`
Topic string `mapstructure:"topic,omitempty"`
TopicPrefix string `mapstructure:"topic-prefix,omitempty"`
Name string `mapstructure:"name,omitempty"`
SASL *types.SASL `mapstructure:"sasl,omitempty"`
TLS *types.TLSConfig `mapstructure:"tls,omitempty"`
MaxRetry int `mapstructure:"max-retry,omitempty"`
Timeout time.Duration `mapstructure:"timeout,omitempty"`
RecoveryWaitTime time.Duration `mapstructure:"recovery-wait-time,omitempty"`
FlushFrequency time.Duration `mapstructure:"flush-frequency,omitempty"`
SyncProducer bool `mapstructure:"sync-producer,omitempty"`
RequiredAcks string `mapstructure:"required-acks,omitempty"`
Format string `mapstructure:"format,omitempty"`
InsertKey bool `mapstructure:"insert-key,omitempty"`
AddTarget string `mapstructure:"add-target,omitempty"`
TargetTemplate string `mapstructure:"target-template,omitempty"`
MsgTemplate string `mapstructure:"msg-template,omitempty"`
SplitEvents bool `mapstructure:"split-events,omitempty"`
NumWorkers int `mapstructure:"num-workers,omitempty"`
CompressionCodec string `mapstructure:"compression-codec,omitempty"`
KafkaVersion string `mapstructure:"kafka-version,omitempty"`
Debug bool `mapstructure:"debug,omitempty"`
BufferSize int `mapstructure:"buffer-size,omitempty"`
OverrideTimestamps bool `mapstructure:"override-timestamps,omitempty"`
EnableMetrics bool `mapstructure:"enable-metrics,omitempty"`
EventProcessors []string `mapstructure:"event-processors,omitempty"`
AddHeaders map[string]string `mapstructure:"add-headers,omitempty"`
}

func (c *config) LogValue() slog.Value {
Expand Down Expand Up @@ -612,10 +613,25 @@ CRPROD:
}
}

var headers []sarama.RecordHeader
for k, v := range cfg.AddHeaders {
headers = append(headers, sarama.RecordHeader{
Key: []byte(k),
Value: []byte(v),
})
}

headers = append(headers, sarama.RecordHeader{
Key: []byte("sub"),
Value: []byte(m.GetMeta()["subscription-name"]),
})

topic := k.selectTopic(m.GetMeta())
msg := &sarama.ProducerMessage{
Topic: topic,
Value: sarama.ByteEncoder(b),
Topic: topic,
Value: sarama.ByteEncoder(b),
Headers: headers,
Timestamp: time.Now(),
}
if cfg.InsertKey {
msg.Key = sarama.ByteEncoder(k.partitionKey(m.GetMeta()))
Expand Down Expand Up @@ -688,10 +704,25 @@ CRPROD:
}
}

var headers []sarama.RecordHeader
for k, v := range cfg.AddHeaders {
headers = append(headers, sarama.RecordHeader{
Key: []byte(k),
Value: []byte(v),
})
}
Comment thread
senthilsam marked this conversation as resolved.
Outdated

headers = append(headers, sarama.RecordHeader{
Key: []byte("sub"),
Value: []byte(m.GetMeta()["subscription-name"]),
})
Comment thread
senthilsam marked this conversation as resolved.
Outdated

topic := k.selectTopic(m.GetMeta())
msg := &sarama.ProducerMessage{
Topic: topic,
Value: sarama.ByteEncoder(b),
Topic: topic,
Value: sarama.ByteEncoder(b),
Headers: headers,
Timestamp: time.Now(),
Comment thread
senthilsam marked this conversation as resolved.
Outdated
}
if cfg.InsertKey {
msg.Key = sarama.ByteEncoder(k.partitionKey(m.GetMeta()))
Expand Down
Loading