Azure Functions currently supports the following languages: C#, JavaScript, F#, Java, Powershell, Python, Typescript. Scala is not on the list.
How can one use scala to write azure functions?
Add a comment
|
1 Answer
Azure Functions supports Java. And it is pretty straight forward to make it working for scala:
import com.microsoft.azure.functions.ExecutionContext
import com.microsoft.azure.functions.HttpMethod
import com.microsoft.azure.functions.HttpRequestMessage
import com.microsoft.azure.functions.HttpResponseMessage
import com.microsoft.azure.functions.HttpStatus
import com.microsoft.azure.functions.annotation.AuthorizationLevel
import com.microsoft.azure.functions.annotation.FunctionName
import com.microsoft.azure.functions.annotation.HttpTrigger
import java.util.Optional
class ScalaFunction {
/**
* This function listens at endpoint "/api/ScalaFunction"
*/
@FunctionName("ScalaFunction")
def run(
@HttpTrigger(
name = "req",
methods = Array(HttpMethod.GET, HttpMethod.POST),
authLevel = AuthorizationLevel.ANONYMOUS) request: HttpRequestMessage[Optional[String]],
context: ExecutionContext): HttpResponseMessage = {
context.getLogger.info("Scala HTTP trigger processed a request.")
request.createResponseBuilder(HttpStatus.OK).body("This is written in Scala. Hello, ").build
}
}
And this is how the pom.xml looks. There is an added dependency for scala and maven-scala-plugin plugin.
<?xml version="1.0" encoding="UTF-8" ?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.jp</groupId>
<artifactId>AzurePrac</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Azure Java Functions</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
<azure.functions.maven.plugin.version>1.13.0</azure.functions.maven.plugin.version>
<azure.functions.java.library.version>1.4.2</azure.functions.java.library.version>
<functionAppName>azureprac-20210906165023338</functionAppName>
</properties>
<dependencies>
<dependency>
<groupId>com.microsoft.azure.functions</groupId>
<artifactId>azure-functions-java-library</artifactId>
<version>${azure.functions.java.library.version}</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>5.4.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>2.23.4</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>2.12.12</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
<plugin>
<groupId>com.microsoft.azure</groupId>
<artifactId>azure-functions-maven-plugin</artifactId>
<version>${azure.functions.maven.plugin.version}</version>
<configuration>
<!-- function app name -->
<appName>${functionAppName}</appName>
<!-- function app resource group -->
<resourceGroup>java-functions-group</resourceGroup>
<!-- function app service plan name -->
<appServicePlanName>java-functions-app-service-plan</appServicePlanName>
<!-- function app region-->
<!-- refers https://github.com/microsoft/azure-maven-plugins/wiki/Azure-Functions:-Configuration-Details#supported-regions for all valid values -->
<region>westus</region>
<!-- function pricingTier, default to be consumption if not specified -->
<!-- refers https://github.com/microsoft/azure-maven-plugins/wiki/Azure-Functions:-Configuration-Details#supported-pricing-tiers for all valid values -->
<!-- <pricingTier></pricingTier> -->
<!-- Whether to disable application insights, default is false -->
<!-- refers https://github.com/microsoft/azure-maven-plugins/wiki/Azure-Functions:-Configuration-Details for all valid configurations for application insights-->
<!-- <disableAppInsights></disableAppInsights> -->
<runtime>
<!-- runtime os, could be windows, linux or docker-->
<os>windows</os>
<javaVersion>8</javaVersion>
</runtime>
<appSettings>
<property>
<name>FUNCTIONS_EXTENSION_VERSION</name>
<value>~3</value>
</property>
</appSettings>
</configuration>
<executions>
<execution>
<id>package-functions</id>
<goals>
<goal>package</goal>
</goals>
</execution>
</executions>
</plugin>
<!--Remove obj folder generated by .NET SDK in maven clean-->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<filesets>
<fileset>
<directory>obj</directory>
</fileset>
</filesets>
</configuration>
</plugin>
<plugin>
<groupId>org.scala-tools</groupId>
<artifactId>maven-scala-plugin</artifactId>
<version>2.15.2</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
And finally to publish: mvn clean package; mvn azure-functions:deploy