/
kafka_client.go
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/
kafka_client.go
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// Copyright © 2023 Cisco Systems, Inc. and/or its affiliates
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package e2e
import (
"context"
"crypto/tls"
"fmt"
"emperror.dev/errors"
"github.com/gruntwork-io/terratest/modules/k8s"
. "github.com/onsi/ginkgo/v2"
"github.com/twmb/franz-go/pkg/kgo"
koperatorUtil "github.com/banzaicloud/koperator/pkg/util"
)
// producingMessagesExternally produces messages based on the parameters into the kafka cluster synchronously.
func producingMessagesExternally(externalKafkaAddresses []string, topicName string, messages []string, clientOptions ...kgo.Opt) error { //nolint:unused // Note: unused linter disabled until External e2e tests are turned on.
By(fmt.Sprintf("Producing messages: '%s' to externalKafkaAddresses: '%s' topicName: '%s'", messages, externalKafkaAddresses, topicName))
clientOptions = append(clientOptions, kgo.SeedBrokers(externalKafkaAddresses...))
cl, err := kgo.NewClient(
clientOptions...,
)
if err != nil {
return err
}
defer cl.Close()
ctx := context.Background()
ctxProducerTimeout, cancelCtxProducerTimeout := context.WithTimeout(ctx, externalProducerTimeout)
defer cancelCtxProducerTimeout()
for i := range messages {
record := &kgo.Record{Topic: topicName, Value: []byte(messages[i])}
// Exits at the first error occurrence
err = cl.ProduceSync(ctxProducerTimeout, record).FirstErr()
if err != nil {
return err
}
}
return nil
}
// consumingMessagesExternally consuming messages based on parameters from Kafka cluster.
// It returns messages as string slice.
func consumingMessagesExternally(externalKafkaAddresses []string, topicName string, clientOptions ...kgo.Opt) ([]string, error) { //nolint:unused // Note: unused linter disabled until External e2e tests are turned on.
By(fmt.Sprintf("Consuming messages from externalKafkaAddresses: '%s' topicName: '%s'", externalKafkaAddresses, topicName))
clientOptions = append(clientOptions, kgo.SeedBrokers(externalKafkaAddresses...), kgo.ConsumeTopics(topicName))
cl, err := kgo.NewClient(
clientOptions...,
)
if err != nil {
return nil, err
}
defer cl.Close()
ctx := context.Background()
ctxConsumerTimeout, cancelCtxConsumerTimeout := context.WithTimeout(ctx, externalProducerTimeout)
defer cancelCtxConsumerTimeout()
// Send fetch request for the Kafka cluster
fetches := cl.PollFetches(ctxConsumerTimeout)
errs := fetches.Errors()
if len(errs) > 0 {
var combinedError error
for _, err := range errs {
combinedError = errors.Append(combinedError,
fmt.Errorf("error: '%w', when consuming message from topic: '%s' partition: '%d'", err.Err, err.Topic, err.Partition))
}
return nil, combinedError
}
iter := fetches.RecordIter()
var messages []string
for !iter.Done() {
consumedRecord := iter.Next()
messages = append(messages, string(consumedRecord.Value))
}
return messages, nil
}
func getTLSConfigFromSecret(kubectlOptions k8s.KubectlOptions, secretName string) (*tls.Config, error) { //nolint:unused // Note: unused linter disabled until External e2e tests are turned on.
By(fmt.Sprintf("Getting TLS config from secret name: '%s' namespace: '%s'", secretName, kubectlOptions.Namespace))
tlsSecret, err := k8s.GetSecretE(GinkgoT(), &kubectlOptions, secretName)
if err != nil {
return nil, fmt.Errorf("could not get TLS secret for kafka client: %w", err)
}
tlsConfig, err := koperatorUtil.CreateTLSConfigFromSecret(tlsSecret)
if err != nil {
return nil, fmt.Errorf("could not create TLS config from secret: %w", err)
}
return tlsConfig, nil
}