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kafkabase: Add support for custom CA certificate in Kafka SSL configuration #23

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Jan 27, 2025
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kafkabase: Add support for custom CA certificate in Kafka SSL configuration #23

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8 changes: 8 additions & 0 deletions .docs/server-config.md
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Original file line number Diff line number Diff line change
Expand Up @@ -83,6 +83,14 @@ List of Kafka brokers separated by comma. Each broker should be in format `host:

If SSL should be enabled

### `BULKER_KAFKA_SSL_CA`

CA certificate string (PEM format) for verifying the broker's key.

### `BULKER_KAFKA_SSL_CA_FILE`

File path to CA certificate for verifying the broker's key.

### `BULKER_KAFKA_SSL_SKIP_VERIFY`

Skip SSL verification of kafka server certificate.
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11 changes: 10 additions & 1 deletion kafkabase/kafka_config.go
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Expand Up @@ -13,7 +13,10 @@ type KafkaConfig struct {
KafkaBootstrapServers string `mapstructure:"KAFKA_BOOTSTRAP_SERVERS"`
KafkaSSL bool `mapstructure:"KAFKA_SSL" default:"false"`
KafkaSSLSkipVerify bool `mapstructure:"KAFKA_SSL_SKIP_VERIFY" default:"false"`
//Kafka authorization as JSON object {"mechanism": "SCRAM-SHA-256|PLAIN", "username": "user", "password": "password"}
KafkaSSLCA string `mapstructure:"KAFKA_SSL_CA"`
KafkaSSLCAFile string `mapstructure:"KAFKA_SSL_CA_FILE"`

// Kafka authorization as JSON object {"mechanism": "SCRAM-SHA-256|PLAIN", "username": "user", "password": "password"}
KafkaSASL string `mapstructure:"KAFKA_SASL"`

KafkaSessionTimeoutMs int `mapstructure:"KAFKA_SESSION_TIMEOUT_MS" default:"45000"`
Expand Down Expand Up @@ -63,6 +66,12 @@ func (ac *KafkaConfig) GetKafkaConfig() *kafka.ConfigMap {
if ac.KafkaSSLSkipVerify {
_ = kafkaConfig.SetKey("enable.ssl.certificate.verification", false)
}
if ac.KafkaSSLCA != "" {
_ = kafkaConfig.SetKey("ssl.ca.pem", ac.KafkaSSLCA)
}
if ac.KafkaSSLCAFile != "" {
_ = kafkaConfig.SetKey("ssl.ca.location", ac.KafkaSSLCAFile)
}
}
if ac.KafkaSASL != "" {
sasl := map[string]interface{}{}
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