README.md

Spring Boot

Start the application locally with docker compose

Store the postgresql database connection details in an .env file at 'code/spring-boot-telemetry/.env'.

DATABASE_PASSWORD=db_password DATABASE_URL=db_url DATABASE_USERNAME=db_admin

Run docker compose up to start PostgreSQL locally and build the app locally within docker.

Run the application in a JVM mode

mvn package
cd target
java -jar spring-boot-telemetry.jar

Run the application with GraalVM native

mvn -Pnative spring-boot:build-image -Dspring-boot.build-image.imageName=spring-boot-native
docker run -p 8080:8080 spring-boot-native

Enable the telemetry for GraalVM native

Add the spring-cloud-azure-starter-monitor dependency to the pom.xml file.

It is a Microsoft distribution of the OpenTelemetry Spring Boot starter.

You also need to add the OpenTelemetry BOM to your pom.xml file:

<dependencyManagement>
    <dependencies>
      <dependency>
         <groupId>io.opentelemetry</groupId>           
         <artifactId>opentelemetry-bom</artifactId>                   
         <version>{opentelemetry.version}</version>           
         <type>pom</type>
      </dependency>     
    </dependencies>   
</dependencyManagement>

Check the last version of the OpenTelemetry BOM in the Maven Central Repository.

Follow these instructions related to Spring Boot 3 for signed JARs.

You have to configure a connection string to send the OpenTelemetry data to the Azure portal.

You can find the connection string in the Azure portal.

You can configure the connection string in the application.properties file:

applicationinsights.connection.string=InstrumentationKey=00000000-0000-0000-0000-000000000000

You can also use the APPLICATIONINSIGHTS_CONNECTION_STRING environment variable.