nixos/kafka: Added mirrormaker testcase

nixos/tests/kafka/default.nix

···
 {
   base = import ./base.nix { inherit system pkgs; };
   cluster = import ./cluster.nix { inherit system pkgs; };
+  mirrormaker = import ./mirrormaker.nix { inherit system pkgs; };
 }

nixos/tests/kafka/mirrormaker.nix

···
+import ../make-test-python.nix (
+  { lib, pkgs, ... }:
+
+  let
+    inherit (lib) mkMerge;
+
+    # Generate with `kafka-storage.sh random-uuid`
+    clusterAId = "ihzlrasUQ9O3Yy0ZWYkd6w";
+
+    clusterBId = "Bnu_zrzKRH6-7KcK7t3I5Q";
+
+    kafkaConfig = {
+      networking.firewall.allowedTCPPorts = [
+        9092
+        9093
+      ];
+
+      virtualisation.diskSize = 1024;
+      virtualisation.memorySize = 1024 * 2;
+
+      environment.systemPackages = [ pkgs.apacheKafka ];
+
+      services.apache-kafka = {
+        enable = true;
+
+        formatLogDirs = true;
+
+        settings = {
+          listeners = [
+            "PLAINTEXT://:9092"
+            "CONTROLLER://:9093"
+          ];
+          "listener.security.protocol.map" = [
+            "PLAINTEXT:PLAINTEXT"
+            "CONTROLLER:PLAINTEXT"
+          ];
+          "controller.listener.names" = [ "CONTROLLER" ];
+
+          "process.roles" = [
+            "broker"
+            "controller"
+          ];
+
+          "log.dirs" = [ "/var/lib/apache-kafka" ];
+          "num.partitions" = 1;
+          "offsets.topic.replication.factor" = 1;
+          "transaction.state.log.replication.factor" = 1;
+          "transaction.state.log.min.isr" = 1;
+        };
+      };
+
+      systemd.services.apache-kafka = {
+        after = [ "network-online.target" ];
+        requires = [ "network-online.target" ];
+        serviceConfig.StateDirectory = "apache-kafka";
+      };
+    };
+
+    extraKafkaConfig = {
+      kafkaa1 = {
+        services.apache-kafka = {
+          clusterId = "${clusterAId}";
+
+          settings = {
+            "node.id" = 1;
+            "controller.quorum.voters" = [ "1@kafkaa1:9093" ];
+          };
+        };
+      };
+
+      kafkab1 = {
+        services.apache-kafka = {
+          clusterId = "${clusterBId}";
+
+          settings = {
+            "node.id" = 1;
+            "controller.quorum.voters" = [ "1@kafkab1:9093" ];
+          };
+        };
+      };
+    };
+
+    kafkaNodes = builtins.mapAttrs (
+      _: val:
+      mkMerge [
+        val
+        kafkaConfig
+      ]
+    ) extraKafkaConfig;
+
+    mirrorMakerProperties = pkgs.writeText "mm2.properties" ''
+      name = A->B
+
+      clusters = A, B
+
+      A.bootstrap.servers = kafkaa1:9092
+      B.bootstrap.servers = kafkab1:9092
+
+      A->B.enabled = true
+      A->B.topics = .*
+
+      B->A.enabled = false
+      B->A.topics = .*
+
+      replication.factor=1
+      replication.policy.class=org.apache.kafka.connect.mirror.IdentityReplicationPolicy
+
+      tasks.max = 2
+      refresh.topics.enabled = true
+      refresh.topics.interval.seconds = 5
+      sync.topic.configs.enabled = true
+
+      checkpoints.topic.replication.factor=1
+      heartbeats.topic.replication.factor=1
+      offset-syncs.topic.replication.factor=1
+
+      offset.storage.replication.factor=1
+      status.storage.replication.factor=1
+      config.storage.replication.factor=1
+
+      emit.checkpoints.enabled = true
+      emit.checkpoints.interval.seconds = 5
+    '';
+  in
+  {
+    name = "kafka-mirrormaker";
+    meta = with pkgs.lib.maintainers; {
+      maintainers = [ jpds ];
+    };
+
+    nodes = {
+      inherit (kafkaNodes) kafkaa1 kafkab1;
+
+      mirrormaker =
+        { config, ... }:
+        {
+          virtualisation.diskSize = 1024;
+          virtualisation.memorySize = 1024 * 2;
+
+          # Define a mirrormaker systemd service
+          systemd.services.kafka-connect-mirror-maker = {
+            after = [ "network-online.target" ];
+            requires = [ "network-online.target" ];
+            wantedBy = [ "multi-user.target" ];
+
+            serviceConfig = {
+              ExecStart = ''
+                ${pkgs.apacheKafka}/bin/connect-mirror-maker.sh ${mirrorMakerProperties}
+              '';
+              Restart = "on-failure";
+              RestartSec = "5s";
+            };
+          };
+        };
+    };
+
+    testScript = ''
+      import json
+
+      for machine in kafkaa1, kafkab1:
+        machine.wait_for_unit("apache-kafka")
+
+      for machine in kafkaa1, kafkab1:
+        machine.wait_for_open_port(9092)
+        machine.wait_for_open_port(9093)
+
+        machine.wait_until_succeeds(
+          "journalctl -o cat -u apache-kafka.service | grep 'Transition from STARTING to STARTED'"
+        )
+
+        machine.wait_until_succeeds(
+          "journalctl -o cat -u apache-kafka.service | grep 'Kafka Server started'"
+        )
+
+      for machine in kafkaa1, kafkab1:
+        current_voters_json = machine.wait_until_succeeds(
+          f"kafka-metadata-quorum.sh --bootstrap-server {machine.name}:9092 describe --status | grep CurrentVoters"
+        ).replace("CurrentVoters:", "")
+
+        voters = json.loads(current_voters_json)
+
+        assert len(voters) == 1
+
+      mirrormaker.wait_for_unit("kafka-connect-mirror-maker")
+
+      mirrormaker.wait_until_succeeds(
+        "journalctl -o cat -u kafka-connect-mirror-maker.service | grep 'Kafka MirrorMaker initializing'"
+      )
+      mirrormaker.wait_until_succeeds(
+        "journalctl -o cat -u kafka-connect-mirror-maker.service | grep 'Targeting clusters \[A, B\]'"
+      )
+      mirrormaker.wait_until_succeeds(
+        "journalctl -o cat -u kafka-connect-mirror-maker.service | grep 'INFO \[Worker clientId=A->B, groupId=A-mm2\] Finished starting connectors and tasks'"
+      )
+
+      mirrormaker.wait_until_succeeds(
+        """
+          journalctl -o cat -u kafka-connect-mirror-maker.service | grep 'INFO \[MirrorSourceConnector\|task-0\] \[Producer clientId=A->B\|A->B-0\|offset-syncs-source-producer\] Cluster ID: ${clusterAId}'
+        """
+      )
+
+      kafkaa1.wait_until_succeeds(
+        "journalctl -o cat -u apache-kafka.service | grep 'Stabilized group B-mm2'"
+      )
+
+      kafkab1.wait_until_succeeds(
+        "journalctl -o cat -u apache-kafka.service | grep 'Stabilized group A-mm2'"
+      )
+
+      kafkaa1.wait_until_succeeds(
+        "kafka-topics.sh --bootstrap-server localhost:9092 --create --topic test-mm-1 --partitions 1 --replication-factor 1"
+      )
+
+      for machine in kafkaa1, kafkab1:
+        machine.succeed(
+          "kafka-topics.sh --bootstrap-server localhost:9092 --list | grep 'test-mm-1'"
+        )
+
+      mirrormaker.wait_until_succeeds(
+        "journalctl -o cat -u kafka-connect-mirror-maker.service | grep 'replicating [[:digit:]]\+ topic-partitions A->B: \[test-mm-1-0\]'"
+      )
+
+      mirrormaker.wait_until_succeeds(
+        "journalctl -o cat -u kafka-connect-mirror-maker.service | grep 'Found [[:digit:]]\+ new topic-partitions on A'"
+      )
+
+      kafkaa1.wait_until_succeeds(
+        "kafka-verifiable-producer.sh --bootstrap-server kafkaa1:9092 --throughput 10 --max-messages 100 --topic test-mm-1"
+      )
+
+      mirrormaker.wait_until_succeeds(
+        "journalctl -o cat -u kafka-connect-mirror-maker.service | grep 'Committing offsets for [[:digit:]]\+ acknowledged messages'"
+      )
+
+      kafkab1.wait_until_succeeds(
+        "kafka-verifiable-consumer.sh --bootstrap-server kafkab1:9092 --topic test-mm-1 --group-id testreplication --max-messages 100"
+      )
+    '';
+  }
+)