Azure Functions
The quarkus-azure-functions extension is a simple integration point between Azure Functions
and Quarkus. It interacts with Azure Functions runtime to bootstrap quarkus and turns any
Azure Functions class you write into a CDI/Arc bean.
This allows you to inject any service or component initialized by quarkus directly into your function classes. You can also change the lifecycle of your function class from request scoped (the default) to application scope too if you want your function class to be a singleton.
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 jakarta.inject.Inject;
import java.util.Optional;
public class Function {
@Inject
GreetingService service;
@FunctionName("HttpExample")
public HttpResponseMessage run(
@HttpTrigger(
name = "req",
methods = {HttpMethod.GET, HttpMethod.POST},
authLevel = AuthorizationLevel.ANONYMOUS)
HttpRequestMessage<Optional<String>> request,
final ExecutionContext context) {
// Parse query parameter
final String query = request.getQueryParameters().get("name");
final String name = request.getBody().orElse(query);
if (name == null) {
return request.createResponseBuilder(HttpStatus.BAD_REQUEST).body("Please pass a name on the query string or in the request body").build();
} else {
return request.createResponseBuilder(HttpStatus.OK).body(service.greeting(name)).build();
}
}
}|
This technology is considered preview. In preview, backward compatibility and presence in the ecosystem is not guaranteed. Specific improvements might require changing configuration or APIs, and plans to become stable are under way. Feedback is welcome on our mailing list or as issues in our GitHub issue tracker. For a full list of possible statuses, check our FAQ entry. |
Prerequisites
To complete this guide, you need:
-
Roughly 15 minutes
-
An IDE
-
JDK 11+ installed with
JAVA_HOMEconfigured appropriately -
Apache Maven 3.8.8
-
Optionally the Quarkus CLI if you want to use it
-
Optionally Mandrel or GraalVM installed and configured appropriately if you want to build a native executable (or Docker if you use a native container build)
-
An Azure Account. Free accounts work.
-
Azure Functions Core Tools version 4.x
Solution
This guide walks you through running a maven project that can deploy an Http Trigger Azure Function class. This function class injects a CDI bean service that generates a greeting message that is passed back to the client.
Creating the Maven Deployment Project
You can download the example code from Quarkus’s application generator at this link.
You can also generate this example with the Quarkus CLI:
quarkus create app --extension=quarkus-azure-functionsRun locally in Azure Functions simulated environment
If you want to try your app with a simulated local Azure Functions environment, you can use this command
./mvnw clean package azure-functions:runNote that you must have the Azure Functions Core Tools installed for this to work!
Deploy to Azure
The pom.xml you generated in the previous step pulls in the azure-functions-maven-plugin. Running maven package
generates config files and a staging directory required by the azure-functions-maven-plugin. Here’s
how to execute it.
./mvnw clean package azure-functions:deployIf deployment is a success, the azure maven plugin will tell you the base URL to access your function.
i.e.
[INFO] HTTP Trigger Urls:
[INFO] HttpExample : https://{appName}.azurewebsites.net/api/httpexampleThe URL to access the service would be
Extension maven dependencies
You must include the quarkus-azure-functions extension as this is the integration point between
Quarkus and Azure Functions. It registers callback with the Azure Functions runtime to bootstrap
Quarkus and to set up Quarkus/Arc as the function factory for your function classes.
