Azure Storage Queue

The Azure Storage Queue connector provides an Akka Stream Source and Sinks for Azure Storage Queue integration.

Azure Storage Queue is a queuing service similar to Amazon’s SQS. It is designed mostly for long-running and non-time-critical tasks. For more information on Azure Storage Queue see the Azure docs.

Project Info: Alpakka Azure Storage Queue
Artifact
com.lightbend.akka
akka-stream-alpakka-azure-storage-queue
2.0.0-RC1
JDK versions
Adopt OpenJDK 8
Adopt OpenJDK 11
Scala versions2.12.10, 2.11.12, 2.13.1
JPMS module nameakka.stream.alpakka.azure.storagequeue
License
Readiness level
Since 0.9, 2017-05-24
Home pagehttps://doc.akka.io/docs/alpakka/current
API documentation
Forums
Release notesIn the documentation
IssuesGithub issues
Sourceshttps://github.com/akka/alpakka

Artifacts

sbt
val AkkaVersion = "2.5.30"
libraryDependencies ++= Seq(
  "com.lightbend.akka" %% "akka-stream-alpakka-azure-storage-queue" % "2.0.0-RC1",
  "com.typesafe.akka" %% "akka-stream" % AkkaVersion
)
Maven
<properties>
  <akka.version>2.5.30</akka.version>
</properties>
<dependency>
  <groupId>com.lightbend.akka</groupId>
  <artifactId>akka-stream-alpakka-azure-storage-queue_2.12</artifactId>
  <version>2.0.0-RC1</version>
</dependency>
<dependency>
  <groupId>com.typesafe.akka</groupId>
  <artifactId>akka-stream_2.12</artifactId>
  <version>${akka.version}</version>
</dependency>
Gradle
versions += [
  AkkaVersion: "2.5.30"
]
dependencies {
  compile group: 'com.lightbend.akka', name: 'akka-stream-alpakka-azure-storage-queue_2.12', version: '2.0.0-RC1',
  compile group: 'com.typesafe.akka', name: 'akka-stream_2.12', version: versions.AkkaVersion
}

The table below shows direct dependencies of this module and the second tab shows all libraries it depends on transitively.

Direct dependencies
OrganizationArtifactVersion
com.microsoft.azureazure-storage8.0.0
com.typesafe.akkaakka-stream_2.122.5.30
org.scala-langscala-library2.12.10
Dependency tree
com.microsoft.azure    azure-storage    8.0.0
    com.fasterxml.jackson.core    jackson-core    2.9.4
    com.microsoft.azure    azure-keyvault-core    1.0.0
        com.google.guava    guava    20.0
        org.apache.commons    commons-lang3    3.4
    org.apache.commons    commons-lang3    3.4
    org.slf4j    slf4j-api    1.7.25
com.typesafe.akka    akka-stream_2.12    2.5.30
    com.typesafe.akka    akka-actor_2.12    2.5.30
        com.typesafe    config    1.3.3
        org.scala-lang.modules    scala-java8-compat_2.12    0.8.0
    com.typesafe.akka    akka-protobuf_2.12    2.5.30
    com.typesafe    ssl-config-core_2.12    0.3.8
        com.typesafe    config    1.3.3
        org.scala-lang.modules    scala-parser-combinators_2.12    1.1.2
    org.reactivestreams    reactive-streams    1.0.2
org.scala-lang    scala-library    2.12.10

Init Azure Storage API

import com.microsoft.azure.storage._
import com.microsoft.azure.storage.queue._
val storageConnectionString = "DefaultEndpointsProtocol=http;AccountName=<YourAccountName>;AccountKey=<YourKey>"
val queueFactory = () => { // Since azure storage JDK is not guaranteed to be thread-safe
  val storageAccount = CloudStorageAccount.parse(storageConnectionString)
  val queueClient = storageAccount.createCloudQueueClient
  queueClient.getQueueReference("myQueue")
}

For more details, see Microsoft Azure Storage Docs.

Queuing a message

import one.aleph.akkzure.queue._
import one.aleph.akkzure.queue.scaladsl._

// Create an example message
val message = new CloudQueueMessage("Hello Azure")

Source.single(message).runWith(AzureQueueSink(queueFactory))

Processing and deleting messages

AzureQueueSource(queueFactory).take(10)
.map({ msg: CloudQueueMessage =>
  println(msg.getMessageContentAsString) // Print the messages content
  msg                                    // Return message to the flow for deletion
}).runWith(AzureQueueDeleteSink(queueFactory))
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