PubSub.sink

A sink that will publish emitted messages to a TopicTopic.

Actor interop operators

Note that there is no backpressure from the topic, so care must be taken to not publish messages at a higher rate than that can be handled by subscribers.

If the topic does not have any subscribers when a message is published, or the topic actor is stopped, the message is sent to dead letters.

Dependency

This operator is included in:

sbt

val AkkaVersion = "2.6.21"
libraryDependencies += "com.typesafe.akka" %% "akka-stream-typed" % AkkaVersion

Maven

<properties>
  <scala.binary.version>2.13</scala.binary.version>
</properties>
<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>com.typesafe.akka</groupId>
      <artifactId>akka-bom_${scala.binary.version}</artifactId>
      <version>2.6.21</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>
<dependencies>
  <dependency>
    <groupId>com.typesafe.akka</groupId>
    <artifactId>akka-stream-typed_${scala.binary.version}</artifactId>
  </dependency>
</dependencies>

Gradle

def versions = [
  ScalaBinary: "2.13"
]
dependencies {
  implementation platform("com.typesafe.akka:akka-bom_${versions.ScalaBinary}:2.6.21")

  implementation "com.typesafe.akka:akka-stream-typed_${versions.ScalaBinary}"
}

Signature

PubSub.sinkPubSub.sink

Reactive Streams semantics