Adventures of a service oriented architect
Blog Articles
Today I tried to get Theia IDE running behind an Apache reverse proxy. Theia IDE runs in a Docker container and Apache forwards the requests to the new subdomain to this container. The page would load but I was stuck on the splash screen and the editor didn’t open. After a few seconds I got … Read more
I had this nasty error when running integration tests with Testcontainers for my Java project with Gradle: SEVERE: Caught exception while closing extension context: org.junit.jupiter.engine.descriptor.ClassExtensionContext@669c884 org.testcontainers.containers.ContainerLaunchException: Container startup failed … Caused by: org.testcontainers.containers.ContainerFetchException: Can’t get Docker image: RemoteDockerImage(imageName=, imagePullPolicy=DefaultPullPolicy()) … Caused by: com.github.dockerjava.api.exception.DockerClientException: Error occurred while preparing Docker context folder. … Caused by: java.io.IOException: Der … Read more
After enabling Kubernetes in Docker Desktop for Windows, it simply wouldn’t come up. I waited about an hour but nothing happened. All needed Docker images etc. were downloaded but then the process stalled. After searching for errors in all the different log files I found a bunch of lines like the following in C:\Users\%USERNAME%\AppData\Roaming\Docker\log\vm\kubelet.log: [026:09:01:30.415][I] … Read more
I tried to start Keycloak in a Docker container with an external database (MariaDB) as described in the documentation of jboss/keycloak: docker run –rm –name=keycloak \ -e KEYCLOAK_USER=admin \ -e KEYCLOAK_PASSWORD=admin123 \ -e DB_VENDOR=mariadb \ -e DB_ADDR=192.168.178.143 \ -e DB_PORT=3306 \ -e DB_DATABASE=keycloak \ -e DB_USER=keycloak \ -e DB_PASSWORD=keycloak \ jboss/keycloak Unfortunately, I got this … Read more
It took me quite a while to get my Java EE 7 application automatically deployed to a target JBoss EAP 7 server from within Jenkins using Gradle as the build tool and Cargo for managing the deployment. So here’s my final solution for you to use! đ build.gradle dependencies { classpath ‘com.bmuschko:gradle-cargo-plugin:2.2.3’ } apply plugin: … Read more
Software AG recorded a video with us on how we cope with the generational change that takes place in the Natural developer community. How do you handle the problem of aging Natural developers? I’d love to hear your comments on that! By the way, I’ll be talking about modern Natural development at IUG 2017! See … Read more
Error handling in Software AG’s Natural can be done in a way that resembles Exception handling in object-oriented languages like Java. throw Instead of throwing an Exception, you raise an error simply by assigning a value to the system variable *ERROR-NR. As soon as a statement like the following is executed, the current program flow … Read more
My JBoss EAP 7 server couldn’t cope with a failing database. After a database restart or failure, e.g. due to maintenance, it simply would not connect to the database again automatically. The application simply stopped working as soon as the database was unavailable for a short period of time. JBoss’s server.log was full of (not … Read more
Here’s a short subroutine for reading the physical file path of the current FUSER of a Natural (from Software AG) runtime. I’m not sure if it works on a mainframe, but it definitely runs on a Linux system. The subroutine returns the following information, if it runs successfully: P-FUSER-PATH /home/macke/fuser P-RC 0 Otherwise the return … Read more
One might think that joining (or combining) two file paths together with Groovy would be an easy thing to do. I’m used to “nice” methods from Ruby like File.join (see How to do a safe join pathname in ruby?): File.join(“path”, “to”, “join”) As it turns out, there is no such method in Groovy. However, here … Read more