Add consumer count to stream queue metrics #4727
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This commit adds the "consumers" metrics to stream queues (consumer count). It is computed by counting the element of the consumer_created ETS table for the given stream queue and for each member of the Osiris cluster. Fixes #4622
|
A/C: Get the code and start a cluster: cd /tmp
git clone [email protected]:rabbitmq/rabbitmq-server.git rabbitmq-server-4622
cd rabbitmq-server-4622
git checkout rabbitmq-server-4622-stream-queue-consumer-count
make start-cluster NODES=3 PLUGINS='rabbitmq_stream rabbitmq_management'Download the performance tool and start it: wget https://github.com/rabbitmq/rabbitmq-java-tools-binaries-dev/releases/download/v-stream-perf-test-latest/stream-perf-test-latest.jar
java -jar stream-perf-test-latest.jar --rate 100 --producers 2 --consumers 9 --stream-count 2The performance tool creates 2 streams, publishes to them, and balances 9 consumers across them. Go to the queue list page and make sure the
List the queues with the REST API, the consumer count should be the same as for the management UI: curl -u guest:guest http://localhost:15672/api/queues | jq .[
{
"arguments": {
"x-max-length-bytes": 20000000000,
"x-queue-leader-locator": "least-leaders",
"x-queue-type": "stream",
"x-stream-max-segment-size-bytes": 500000000
},
"auto_delete": false,
"consumers": 5,
"durable": true,
"effective_policy_definition": {},
"exclusive": false,
"members": [
"rabbit-1@acogoluegnes-nuc",
"rabbit-3@acogoluegnes-nuc",
"rabbit-2@acogoluegnes-nuc"
],
"memory": 9248,
"messages": 56879,
"messages_details": {
"rate": 100.4
},
"messages_ready": 56879,
"messages_ready_details": {
"rate": 100.4
},
"messages_unacknowledged": 0,
"messages_unacknowledged_details": {
"rate": 0
},
"name": "stream-1",
"node": "rabbit-1@acogoluegnes-nuc",
"online": [
"rabbit-3@acogoluegnes-nuc",
"rabbit-2@acogoluegnes-nuc",
"rabbit-1@acogoluegnes-nuc"
],
"operator_policy": null,
"policy": null,
"readers": {
"rabbit-1@acogoluegnes-nuc": 2,
"rabbit-2@acogoluegnes-nuc": 3,
"rabbit-3@acogoluegnes-nuc": 2
},
"reductions": 0,
"reductions_details": {
"rate": 0
},
"state": "running",
"type": "stream",
"vhost": "/"
},
{
"arguments": {
"x-max-length-bytes": 20000000000,
"x-queue-leader-locator": "least-leaders",
"x-queue-type": "stream",
"x-stream-max-segment-size-bytes": 500000000
},
"auto_delete": false,
"consumers": 4,
"durable": true,
"effective_policy_definition": {},
"exclusive": false,
"members": [
"rabbit-2@acogoluegnes-nuc",
"rabbit-3@acogoluegnes-nuc",
"rabbit-1@acogoluegnes-nuc"
],
"memory": 9280,
"messages": 56787,
"messages_details": {
"rate": 100.4
},
"messages_ready": 56787,
"messages_ready_details": {
"rate": 100.4
},
"messages_unacknowledged": 0,
"messages_unacknowledged_details": {
"rate": 0
},
"name": "stream-2",
"node": "rabbit-2@acogoluegnes-nuc",
"online": [
"rabbit-3@acogoluegnes-nuc",
"rabbit-2@acogoluegnes-nuc",
"rabbit-1@acogoluegnes-nuc"
],
"operator_policy": null,
"policy": null,
"readers": {
"rabbit-1@acogoluegnes-nuc": 2,
"rabbit-2@acogoluegnes-nuc": 2,
"rabbit-3@acogoluegnes-nuc": 2
},
"reductions": 0,
"reductions_details": {
"rate": 0
},
"state": "running",
"type": "stream",
"vhost": "/"
}
]Or just extract the curl -u guest:guest http://localhost:15672/api/queues | jq '.[].consumers'
5
4Stop the performance tool (Ctrl+C). Refresh the queue list page, the number of consumers should be 0 for both streams.
Check the REST API: curl -u guest:guest http://localhost:15672/api/queues | jq .[
{
"arguments": {
"x-max-length-bytes": 20000000000,
"x-queue-leader-locator": "least-leaders",
"x-queue-type": "stream",
"x-stream-max-segment-size-bytes": 500000000
},
"auto_delete": false,
"consumers": 0,
"durable": true,
"effective_policy_definition": {},
"exclusive": false,
"members": [
"rabbit-1@acogoluegnes-nuc",
"rabbit-3@acogoluegnes-nuc",
"rabbit-2@acogoluegnes-nuc"
],
"memory": 9184,
"messages": 96958,
"messages_details": {
"rate": 0
},
"messages_ready": 96958,
"messages_ready_details": {
"rate": 0
},
"messages_unacknowledged": 0,
"messages_unacknowledged_details": {
"rate": 0
},
"name": "stream-1",
"node": "rabbit-1@acogoluegnes-nuc",
"online": [
"rabbit-3@acogoluegnes-nuc",
"rabbit-2@acogoluegnes-nuc",
"rabbit-1@acogoluegnes-nuc"
],
"operator_policy": null,
"policy": null,
"readers": {
"rabbit-1@acogoluegnes-nuc": 2,
"rabbit-2@acogoluegnes-nuc": 3,
"rabbit-3@acogoluegnes-nuc": 2
},
"reductions": 0,
"reductions_details": {
"rate": 0
},
"state": "running",
"type": "stream",
"vhost": "/"
},
{
"arguments": {
"x-max-length-bytes": 20000000000,
"x-queue-leader-locator": "least-leaders",
"x-queue-type": "stream",
"x-stream-max-segment-size-bytes": 500000000
},
"auto_delete": false,
"consumers": 0,
"durable": true,
"effective_policy_definition": {},
"exclusive": false,
"members": [
"rabbit-2@acogoluegnes-nuc",
"rabbit-3@acogoluegnes-nuc",
"rabbit-1@acogoluegnes-nuc"
],
"memory": 9216,
"messages": 96957,
"messages_details": {
"rate": 0
},
"messages_ready": 96957,
"messages_ready_details": {
"rate": 0
},
"messages_unacknowledged": 0,
"messages_unacknowledged_details": {
"rate": 0
},
"name": "stream-2",
"node": "rabbit-2@acogoluegnes-nuc",
"online": [
"rabbit-3@acogoluegnes-nuc",
"rabbit-2@acogoluegnes-nuc",
"rabbit-1@acogoluegnes-nuc"
],
"operator_policy": null,
"policy": null,
"readers": {
"rabbit-1@acogoluegnes-nuc": 2,
"rabbit-2@acogoluegnes-nuc": 2,
"rabbit-3@acogoluegnes-nuc": 2
},
"reductions": 0,
"reductions_details": {
"rate": 0
},
"state": "running",
"type": "stream",
"vhost": "/"
}
]curl -u guest:guest http://localhost:15672/api/queues | jq '.[].consumers'
0
0Stop the cluster: make stop-cluster NODES=3Delete the sources for the branch: cd /tmp
rm -rf /tmp/rabbitmq-server-4622 |
michaelklishin
approved these changes
May 5, 2022
michaelklishin
deleted the
rabbitmq-server-4622-stream-queue-consumer-count
branch
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This commit adds the "consumers" metrics to stream queues (consumer count).
It is computed by counting the element of the consumer_created ETS table
for the given stream queue and for each member of the Osiris cluster.
Fixes #4622