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managed.go
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managed.go
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package kafka
import (
"fmt"
"strconv"
crd "github.com/RedHatInsights/clowder/apis/cloud.redhat.com/v1alpha1"
"github.com/RedHatInsights/clowder/controllers/cloud.redhat.com/config"
"github.com/RedHatInsights/clowder/controllers/cloud.redhat.com/errors"
"github.com/RedHatInsights/clowder/controllers/cloud.redhat.com/providers"
"github.com/RedHatInsights/rhc-osdk-utils/utils"
core "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
)
type managedKafkaProvider struct {
providers.Provider
}
// NewNoneKafka returns a new non kafka provider object.
func NewManagedKafka(p *providers.Provider) (providers.ClowderProvider, error) {
return &managedKafkaProvider{Provider: *p}, nil
}
func (k *managedKafkaProvider) EnvProvide() error {
return nil
}
func (k *managedKafkaProvider) Provide(app *crd.ClowdApp) error {
if len(app.Spec.KafkaTopics) == 0 {
return nil
}
var err error
var secret *core.Secret
var broker config.BrokerConfig
secret, err = k.getSecret()
if err != nil {
return err
}
broker, err = k.getBrokerConfig(secret)
if err != nil {
return err
}
k.Config.Kafka = k.getKafkaConfig(broker, app)
return nil
}
func (k *managedKafkaProvider) appendTopic(topic crd.KafkaTopicSpec, kafkaConfig *config.KafkaConfig) {
topicName := topic.TopicName
if k.Env.Spec.Providers.Kafka.ManagedPrefix != "" {
topicName = fmt.Sprintf("%s%s", k.Env.Spec.Providers.Kafka.ManagedPrefix, topicName)
}
kafkaConfig.Topics = append(
kafkaConfig.Topics,
config.TopicConfig{
Name: topicName,
RequestedName: topic.TopicName,
},
)
}
func (k *managedKafkaProvider) destructureSecret(secret *core.Secret) (int, string, string, string, string, error) {
port, err := strconv.Atoi(string(secret.Data["port"]))
if err != nil {
return 0, "", "", "", "", err
}
password := string(secret.Data["password"])
username := string(secret.Data["username"])
hostname := string(secret.Data["hostname"])
cacert := ""
if val, ok := secret.Data["cacert"]; ok {
cacert = string(val)
}
return port, password, username, hostname, cacert, nil
}
func (k *managedKafkaProvider) getBrokerConfig(secret *core.Secret) (config.BrokerConfig, error) {
broker := config.BrokerConfig{}
port, password, username, hostname, cacert, err := k.destructureSecret(secret)
if err != nil {
return broker, err
}
saslType := config.BrokerConfigAuthtypeSasl
broker.Hostname = hostname
broker.Port = &port
broker.Authtype = &saslType
if cacert != "" {
broker.Cacert = &cacert
}
broker.Sasl = &config.KafkaSASLConfig{
Password: &password,
Username: &username,
SecurityProtocol: utils.StringPtr("SASL_SSL"),
SaslMechanism: utils.StringPtr("PLAIN"),
}
return broker, nil
}
func (k *managedKafkaProvider) getKafkaConfig(broker config.BrokerConfig, app *crd.ClowdApp) *config.KafkaConfig {
kafkaConfig := &config.KafkaConfig{}
kafkaConfig.Brokers = []config.BrokerConfig{broker}
kafkaConfig.Topics = []config.TopicConfig{}
for _, topic := range app.Spec.KafkaTopics {
k.appendTopic(topic, kafkaConfig)
}
return kafkaConfig
}
func (k *managedKafkaProvider) getSecret() (*core.Secret, error) {
secretRef, err := k.getSecretRef()
if err != nil {
return nil, err
}
secret := &core.Secret{}
if err = k.Client.Get(k.Ctx, secretRef, secret); err != nil {
return nil, err
}
return secret, nil
}
func (k *managedKafkaProvider) getSecretRef() (types.NamespacedName, error) {
secretRef := types.NamespacedName{
Name: k.Env.Spec.Providers.Kafka.ManagedSecretRef.Name,
Namespace: k.Env.Spec.Providers.Kafka.ManagedSecretRef.Namespace,
}
nullName := types.NamespacedName{}
if secretRef == nullName {
return nullName, errors.New("no secret ref defined for managed Kafka")
}
return secretRef, nil
}