franz

A collection of Kafka utility tools:

• franz-load: Kafka load tester.
• franz-replicator: replicate Kafka topics.

A tiny Kafka producer load tester, written in Rust. It exposes REST endpoints to create load producer jobs and query results.

franz-load

Run

Parameters

Short	Long	Description
-p	--http-port	HTTP port used by franz.
-k	--kafka-hosts	Kafka hosts, comma separated.

Docker

$ docker run -p 8080:8080 teivah/franz-load -- -p 8080 -k kafka:9092

Local

$ cargo build --release
$ ./target/release/franz -p 8080 -k kafka:9092 

API

Produce

Description: Triggers a job

Path: POST /produce

JSON request:

• topic: Kafka topic
• payload: Kafka payload
• expected_total: Total number of messages
• requested_required_acks: Kafka required ack (-1: All, 0: None, 1: One)
• producers: Number of concurrent producers

JSON example:

{
	"topic": "foo",
	"payload": "{true}",
	"expected_total": 100,
	"requested_required_acks": -1,
	"producers": 10 
}

The response returns an 201 containing an HATEAOS response with the job ID created.

{
    "links": {
        "status": "/status/7bb17429-50bf-4f79-b8de-db1916683294"
    }
}

Status

Description: Get job status.

Path: GET /status/{id} (id being the one returned by /produce)

If the job has been completed, it will return a 200:

{
    "messages_sent": 1000000,
    "average_latency_ms": 6.9
}

Otherwise, it returns a 404 if the job does not exist, or a 204 if the job has not completed yet.

franz-replicator

Run

Parameters

Short	Long	Description
-k	--kafka-hosts	Kafka hosts, comma separated.
-r	--replication	Replication configuration, e.g. source1=target1;source2=target2.
-o	--offset	Offset: 0 (earliest) or 1 (latest).
-a	--required-acks	Number of required acks for the producer: 0 (none), 1 (one), -1 (all).
-g	--group	Consumer group.
-t	--producer-timeout	Producer timeout in ms.

Docker

$ docker run -p 8080:8080 teivah/franz-load -- -k kafka:9092 -r source=target -o 1 -a 0, -g consumer_group -t 3000

Local

$ cargo build --release
$ ./target/release/franz-load -k kafka:9092 -r source=target -o 1 -a 0, -g consumer_group -t 3000