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kafka.go
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kafka.go
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// Copyright 2017 Authors of Cilium
//
// 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 RuntimeTest
import (
"context"
"fmt"
. "github.com/cilium/cilium/test/ginkgo-ext"
"github.com/cilium/cilium/test/helpers"
"github.com/cilium/cilium/test/helpers/constants"
. "github.com/onsi/gomega"
)
var _ = Describe("RuntimeKafka", func() {
var (
vm *helpers.SSHMeta
monitorStop = func() error { return nil }
allowedTopic = "allowedTopic"
disallowTopic = "disallowTopic"
topicTest = "test-topic"
listTopicsCmd = "/opt/kafka/bin/kafka-topics.sh --list --zookeeper zook:2181"
MaxMessages = 5
client = "client"
)
containers := func(mode string) {
images := map[string]string{
"zook": constants.ZookeeperImage,
"client": constants.KafkaClientImage,
}
switch mode {
case "create":
for k, v := range images {
vm.ContainerCreate(k, v, helpers.CiliumDockerNetwork, fmt.Sprintf("-l id.%s", k))
}
zook, err := vm.ContainerInspectNet("zook")
Expect(err).Should(BeNil())
vm.ContainerCreate("kafka", constants.KafkaImage, helpers.CiliumDockerNetwork, fmt.Sprintf(
"-l id.kafka -e KAFKA_ZOOKEEPER_CONNECT=%s:2181 -e KAFKA_ZOOKEEPER_SESSION_TIMEOUT_MS=60000 -e KAFKA_LISTENERS=PLAINTEXT://:9092 -e KAFKA_ZOOKEEPER_CONNECTION_TIMEOUT_MS=60000", zook["IPv4"]))
case "delete":
for k := range images {
vm.ContainerRm(k)
}
vm.ContainerRm("kafka")
}
}
createTopicCmd := func(topic string) string {
return fmt.Sprintf("/opt/kafka/bin/kafka-topics.sh --create --zookeeper zook:2181 "+
"--replication-factor 1 --partitions 1 --topic %s", topic)
}
createTopic := func(topic string) {
logger.Infof("Creating new kafka topic %s", topic)
res := vm.ContainerExec(client, createTopicCmd(topic))
res.ExpectSuccess("Unable to create topic %s", topic)
}
consumerCmd := func(topic string, maxMsg int) string {
return fmt.Sprintf("/opt/kafka/bin/kafka-console-consumer.sh --bootstrap-server "+
"kafka:9092 --topic %s --max-messages %d --timeout-ms 300000 --from-beginning",
topic, maxMsg)
}
consumer := func(topic string, maxMsg int) *helpers.CmdRes {
return vm.ContainerExec(client, consumerCmd(topic, maxMsg))
}
producer := func(topic string, message string) {
cmd := fmt.Sprintf(
"echo %s | docker exec -i %s /opt/kafka/bin/kafka-console-producer.sh "+
"--broker-list kafka:9092 --topic %s",
message, client, topic)
vm.Exec(cmd)
}
// WaitKafkaBroker waits for the broker to be ready, by executing
// a command repeatedly until it succeeds, or a timeout occurs
waitForKafkaBroker := func(pod string, cmd string) error {
body := func() bool {
res := vm.ContainerExec(pod, cmd)
return res.WasSuccessful()
}
err := helpers.WithTimeout(body, "Kafka Broker not ready", &helpers.TimeoutConfig{Timeout: helpers.HelperTimeout})
return err
}
BeforeAll(func() {
vm = helpers.InitRuntimeHelper(helpers.Runtime, logger)
ExpectCiliumReady(vm)
status := vm.ExecCilium(fmt.Sprintf("config %s=true",
helpers.OptionConntrackLocal))
status.ExpectSuccess()
containers("create")
epsReady := vm.WaitEndpointsReady()
Expect(epsReady).Should(BeTrue(), "Endpoints are not ready after timeout")
err := waitForKafkaBroker(client, createTopicCmd(topicTest))
Expect(err).To(BeNil(), "Kafka broker failed to come up")
By("Creating kafka topics")
createTopic(allowedTopic)
createTopic(disallowTopic)
By("Listing created Kafka topics")
res := vm.ContainerExec(client, listTopicsCmd)
res.ExpectSuccess("Cannot list kafka topics")
})
AfterEach(func() {
vm.PolicyDelAll()
})
AfterAll(func() {
containers("delete")
status := vm.ExecCilium(fmt.Sprintf("config %s=false",
helpers.OptionConntrackLocal))
status.ExpectSuccess()
vm.CloseSSHClient()
})
JustBeforeEach(func() {
monitorStop = vm.MonitorStart()
})
JustAfterEach(func() {
vm.ValidateNoErrorsInLogs(CurrentGinkgoTestDescription().Duration)
Expect(monitorStop()).To(BeNil(), "cannot stop monitor command")
})
AfterFailed(func() {
vm.ReportFailed("cilium policy get")
})
It("Kafka Policy Ingress", func() {
_, err := vm.PolicyImportAndWait(vm.GetFullPath("Policies-kafka.json"), helpers.HelperTimeout)
Expect(err).Should(BeNil())
endPoints, err := vm.PolicyEndpointsSummary()
Expect(err).Should(BeNil(), "Cannot get endpoint list")
Expect(endPoints[helpers.Enabled]).To(Equal(1),
"Check number of endpoints with policy enforcement enabled")
Expect(endPoints[helpers.Disabled]).To(Equal(2),
"Check number of endpoints with policy enforcement disabled")
By("Allowed topic")
By("Sending produce request on kafka topic `allowedTopic`")
for i := 1; i <= MaxMessages; i++ {
producer(allowedTopic, fmt.Sprintf("Message %d", i))
}
By("Sending consume request on kafka topic `allowedTopic`")
res := consumer(allowedTopic, MaxMessages)
res.ExpectSuccess("Failed to consume messages from kafka topic `allowedTopic`")
Expect(res.CombineOutput().String()).
Should(ContainSubstring("Processed a total of %d messages", MaxMessages),
"Kafka did not process the expected number of messages")
By("Disable topic")
res = consumer(disallowTopic, MaxMessages)
res.ExpectFail("Kafka consumer can access to disallowTopic")
})
It("Kafka Policy Role Ingress", func() {
_, err := vm.PolicyImportAndWait(vm.GetFullPath("Policies-kafka-Role.json"), helpers.HelperTimeout)
Expect(err).Should(BeNil(), "Expected nil got %s while importing policy Policies-kafka-Role.json", err)
endPoints, err := vm.PolicyEndpointsSummary()
Expect(err).Should(BeNil(), "Expect nil. Failed to apply policy on all endpoints with error :%s", err)
Expect(endPoints[helpers.Enabled]).To(Equal(1), "Expected 1 endpoint to be policy enabled. Policy enforcement failed")
Expect(endPoints[helpers.Disabled]).To(Equal(2), "Expected 2 endpoint to be policy disabled. Policy enforcement failed")
By("Sending produce request on kafka topic `allowedTopic`")
for i := 1; i <= MaxMessages; i++ {
producer(allowedTopic, fmt.Sprintf("Message %d", i))
}
By("Sending consume request on kafka topic `allowedTopic`")
res := consumer(allowedTopic, MaxMessages)
res.ExpectSuccess("Failed to consume messages from kafka topic `allowedTopic`")
Expect(res.CombineOutput().String()).
Should(ContainSubstring("Processed a total of %d messages", MaxMessages),
"Kafka did not process the expected number of messages")
By("Disable topic")
// Consumer timeout didn't work correctly, so make sure that AUTH is present in the reply
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
res = vm.ExecInBackground(ctx, fmt.Sprintf(
"docker exec -i %s %s", client, consumerCmd(disallowTopic, MaxMessages)))
err = res.WaitUntilMatch("{disallowTopic=TOPIC_AUTHORIZATION_FAILED}")
Expect(err).To(BeNil(), "Traffic in disallowTopic is allowed")
})
})