Apache Kafka Configuration
======================

Some parameters can be configured using Gerrit config file.

Sample config
---------------------

```
[plugin "kafka-events"]
        bootstrapServers = localhost:9092
```

All the Apache Kafka properties configuration needs to
be defined in gerrit.config using a lower camel-case notation.

Example: bootstrapServers correspond to the Apache Kafka property
bootstrap.servers.

See [Apache Kafka Producer Config](http://kafka.apache.org/documentation.html#producerconfigs)
for a full list of available settings and the values allowed.

Default Values
-----------------

|name                 | value
|:--------------------|:------------------
| acks                | all
| retries             | 0
| batchSize           | 16384
| lingerMs            | 1
| bufferMemory        | 33554432
| keySerializer       | org.apache.kafka.common.serialization.StringSerializer
| valueSerializer     | org.apache.kafka.common.serialization.StringSerializer

Additional properties
---------------------

`plugin.kafka-events.groupId`
:	Kafka consumer group for receiving messages.
	Default: Gerrit instance-id

`plugin.kafka-events.pollingIntervalMs`
:	Polling interval in msec for receiving messages from Kafka topic subscription.
	Default: 1000

`plugin.kafka-events.sendAsync`
:	Send messages to Kafka asynchronously, detaching the calling process from the
	acknowledge of the message being sent.
	Default: true