akka-persistence-kafka's Introduction

akka-persistence-kafka

akka-persistence-kafka writes journal and snapshot entries to Kafka.

Features

Supported versions:

Java: 1.8+
Scala: 2.11.x or 2.12.x or 2.13.x
Akka: 2.5.x(Scala 2.11 only), 2.6.x(Scala 2.12, 2.13)
Kafka 2.4.x+
Alpakka-Kafka 2.0.x+.

Installation

Add the following to your sbt build (2.11.x, 2.12.x, 2.13.x):

resolvers += "Sonatype OSS Release Repository" at "https://oss.sonatype.org/content/repositories/releases/"

val version = "..."

libraryDependencies += Seq(
  "com.github.j5ik2o" %% "akka-persistence-kafka" % version
)

Configration

The minimum necessary settings are as follows.

# if use journal plugin
akka.persistence.journal.plugin = "j5ik2o.kafka-journal"
# if use snapshot plugin
akka.persistence.snapshot-store.plugin = "j5ik2o.kafka-snapshot-store"

j5ik2o {
  kafka-journal {
    topic-prefix = "journal-"
    # if need customize, default is persistence-id
    topic-resolver-class-name = "com.github.j5ik2o.akka.persistence.kafka.resolver.KafkaTopicResolver$PersistenceId"
    # if need customize, default is partion 0
    partition-resolver-class-name = "com.github.j5ik2o.akka.persistence.kafka.resolver.KafkaPartitionResolver$PartitionZero"
   
    producer {
      kafka-clients {
        bootstrap.servers = "localhost:6001"
      }
    } 
    consumer {
      kafka-clients {
        bootstrap.servers = "localhost:6001"
        group.id = "akka-persistence-journal"
      }
    }
  }

  kafka-snapshot-store {
    topic-prefix = "snapshot-"
    # if need customize, default is persistence-id
    topic-resolver-class-name = "com.github.j5ik2o.akka.persistence.kafka.resolver.KafkaTopicResolver$PersistenceId"
    # if need customize, default is partition 0
    partition-resolver-class-name = "com.github.j5ik2o.akka.persistence.kafka.resolver.KafkaPartitionResolver$PartitionZero"

    producer {
      kafka-clients {
        bootstrap.servers = "localhost:6001"
      }
    } 
    consumer {
      kafka-clients {
        bootstrap.servers = "localhost:6001"
        group.id = "akka-persistence-snapshot"
      }
    }
  }
}

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