Paul Sterl has written 38 articles

Azure Bicep CLI and functions cheet sheet

Overall Azure bicep is the best repalcement for AWS CDK currently available (2023) and the recommended way to express infrastructure-as-code in the aure universe. Bicep CLI All command require azure CLI and PowerShell 7.x.x Select subscription by name / set context Set default Run bicep deployment Read resource group List resource groups Bicep functions Random…

Azure Node Functions Apps and OpenAPI Swagger

Sometimes we face the problem that we want to host a very simple web-service including a swagger-ui / OpenApi-UI. The question now is, what is the simplest solution, which works everywhere, even in a azure function app? Where are of course some libs etc. which on the other hand require us to run the web-server.…

Azure DevOps Function App Deployment „No package found“

Problem This error occurs using the default MS deployment example. Even if we have an uploaded artefact Solution The problem is, that we have a deployment step by default but the MS documentation is outdated and so is missing the download step: As so we have to: Deploy Node Function App using Azure DevOps The…

Quartz integration in Spring

Why Quartz? motivation Spring comes already with an own timer and this is fine if we have very simple requirements and we don’t really care about state or on which pod the timer is actually running. To be more precise the timer/ job is running in each of our spring containers independently. Lets be honest,…

Disable @Scheduled timers for test in Spring

Problem As soon we have timers in our project they may cause issues in our integration tests, as they start running in the most undesirable situation. E.g. during the trigger a specific function which would usually be triggered by the timer. Solution In the easiest scenario if it is a in memory Spring test we…

Aspects with Annotations

Problem Define a pointcut for annotated methods. The most example are based only on @within or @annotation which has the downside that the aspect is added to all methods and the check of the annotation is executed during runtime. Solution Git Repository https://github.com/sterlp/training/tree/master/aspect Links https://www.eclipse.org/aspectj/doc/released/progguide/semantics-pointcuts.html https://docs.spring.io/spring-framework/docs/5.3.x/reference/html/core.html#aop-pointcuts-designators

Spring Boot Redirect to SwaggerUI

Problem Some services don’t have an UI and the OpenAPI/ Swagger UI should be used as default UI of the service. As so the root should be redirected directly to the SwaggerUI. Solution Just add a WebMvc redirect. Swagger Open API dependencies Spring Boot 2.x Ensure you check the current version: Spring Boot 3.x Ensure…

Java language extensions

Java 15 https://www.oracle.com/java/technologies/javase/15-relnote-issues.html Records Preview (JEP 384) Example on Github Text Blocks (JEP 378) Example on Github Pattern Matching Type Checks (JEP 375) Example on Github Other Java 15 language changes Nashorn JavaScript Engine removed Java 14 https://www.oracle.com/java/technologies/javase/14-relnote-issues.html Switch Expressions (JEP 361) Helpful NullPointerExceptions (JEP 358) example Java 13 https://www.oracle.com/java/technologies/javase/13-relnote-issues.html Java 12 https://www.oracle.com/java/technologies/javase/12-relnote-issues.html