···
+
import ../make-test-python.nix (
+
# Generate with `kafka-storage.sh random-uuid`
+
clusterAId = "ihzlrasUQ9O3Yy0ZWYkd6w";
+
clusterBId = "Bnu_zrzKRH6-7KcK7t3I5Q";
+
networking.firewall.allowedTCPPorts = [
+
virtualisation.diskSize = 1024;
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virtualisation.memorySize = 1024 * 2;
+
environment.systemPackages = [ pkgs.apacheKafka ];
+
services.apache-kafka = {
+
"listener.security.protocol.map" = [
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"controller.listener.names" = [ "CONTROLLER" ];
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"log.dirs" = [ "/var/lib/apache-kafka" ];
+
"offsets.topic.replication.factor" = 1;
+
"transaction.state.log.replication.factor" = 1;
+
"transaction.state.log.min.isr" = 1;
+
systemd.services.apache-kafka = {
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after = [ "network-online.target" ];
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requires = [ "network-online.target" ];
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serviceConfig.StateDirectory = "apache-kafka";
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services.apache-kafka = {
+
clusterId = "${clusterAId}";
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"controller.quorum.voters" = [ "1@kafkaa1:9093" ];
+
services.apache-kafka = {
+
clusterId = "${clusterBId}";
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"controller.quorum.voters" = [ "1@kafkab1:9093" ];
+
kafkaNodes = builtins.mapAttrs (
+
mirrorMakerProperties = pkgs.writeText "mm2.properties" ''
+
A.bootstrap.servers = kafkaa1:9092
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B.bootstrap.servers = kafkab1:9092
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replication.policy.class=org.apache.kafka.connect.mirror.IdentityReplicationPolicy
+
refresh.topics.enabled = true
+
refresh.topics.interval.seconds = 5
+
sync.topic.configs.enabled = true
+
checkpoints.topic.replication.factor=1
+
heartbeats.topic.replication.factor=1
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offset-syncs.topic.replication.factor=1
+
offset.storage.replication.factor=1
+
status.storage.replication.factor=1
+
config.storage.replication.factor=1
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emit.checkpoints.enabled = true
+
emit.checkpoints.interval.seconds = 5
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name = "kafka-mirrormaker";
+
meta = with pkgs.lib.maintainers; {
+
maintainers = [ jpds ];
+
inherit (kafkaNodes) kafkaa1 kafkab1;
+
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" ];
+
${pkgs.apacheKafka}/bin/connect-mirror-maker.sh ${mirrorMakerProperties}
+
Restart = "on-failure";
+
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:
+
"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"