I want to deploy a Java & Maven micro services application on OpenShift however I have one small issue. These micro services are dependent on a commons project
containing some common components.
How can i add the jar of the commons project ( private jar, not on public repo) to the class path of the micro services about to be deployed on Openshift?
When building the application locally we used a maven plugin which would move the jar of the commons project into the local maven repository, from where it was easily referenced via a dependency tag in the pom file.
Here are some approaches that I thought about:
use an internal maven repository
create a folder on the root of the project and use it as a local maven repo, declaring it via repository tags in the pom files
deploy a nexus repository on the Openshift cluster
The first approach is not viable since our company does not have an internal maven repository.
We also tried the third approach , however we did not manage to deploy a running nexus repo on Openshift.
The only viable solution left is the second one, however I am a little bit reluctant to implement it since it does seem to be the standard way of doing things. What approach would you reccommend?
create a folder on the root of the project and use it as a local maven repo, declaring it via repository tags in the pom files
This won't be a good approach TBH.
My recommendation would be using a nexus/jfrog etc. repo OpenShift internal or externally (a more recommended approach for enterprises) and get the commons and other libraries from that repo via defining maven dependencies.
Related
On looking at the spring-boot-starter-web, spring-boot-starter-security projects on github, i find them to be empty with just a build.gradle file present there.
I hope this is as expected, but this leads me to understand where the actual source code can be found. And I use maven, so I was expecting atleast a pom.xml in these projects. But since it is not present, I am wondering how spring boot team publishes there artifacts to maven central repo.
I hope this is as expected
This is as expected. Spring Boot's starter modules exist purely to being multiple dependencies together into a convenient "package". For example, if you want to write a Servlet-based web application using Spring MVC and Tomcat, a single dependency on spring-boot-starter-web provides all of the dependencies that you need. You can learn a bit more about the starters in the reference documentation.
Where the actual source code can be found
The majority of the code can be found in spring-boot-autoconfigure. For more production-focused features, you'll also find some code in spring-boot-actuator-autoconfigure. The code in these two modules is activated automatically when the dependencies that it requires are on the classpath. You can learn more about this conditional activation and auto-configuration in the reference documentation.
And I use maven, so I was expecting atleast a pom.xml in these projects. But since it is not present, I am wondering how spring boot team publishes there artifacts to maven central repo.
Spring Boot is built with Gradle which, unlike Maven, completely separates the configuration needed by the build system to build the project and the information needed by a build system to consume the project. The build.gradle files provide all of the information that Gradle needs to build the project. As part of this, it generates Gradle module metadata files and Maven pom.xml files that contain all of the information needed to consume the project with Gradle and Maven respectively. These generated files are then published to Maven Central alongside the jar files, source code, etc.
I am building a SpringBoot application in which i want to handle some of the cross cutting concerns like logging, caching, persistence in to a project on its own so in future other rest spring boot components can adopt it and use it as a dependency.
I am using Gradle for dependency management. My question is :-
How can i manage this concerns without publishing it to the public artifactory.
If i have to publish then which is the free artifactory i can use for my development practice
If creating jar is an option as a temp solution then how can it be achieved via gradle. Most of the examples over the internet is for creating the executable jar files.
What are the other options i can try.
How can i manage this concerns without publishing it to the public artifactory.
Publishing has to happen regardless where it will be published to. You can use a private solution such as Nexus Repository.
If i have to publish then which is the free artifactory i can use for my development practice
For development, you can simply publish to your local Maven repository. This is typically ~/.m2. Using the Maven Publish plugin, you can easily publish locally by invoking the publishToMavenLocal task.
If creating jar is an option as a temp solution then how can it be achieved via gradle. Most of the examples over the internet is for creating the executable jar files.
Since you're creating a Spring Boot library, use the Java Library plugin to create the JAR artifact and in combination with the Maven Publish plugin to publish.
In the end, there are 2-3 key components that get published when using Gradle:
JAR artifact
pom.xml: https://maven.apache.org/pom.html
Gradle Module Metadata: https://docs.gradle.org/current/userguide/publishing_gradle_module_metadata.html
I have a project working on my Spring Tool Suite. Also, I have a project in an innersource repository that I want to use in my project of STS.
For that, I need to specify the dependency in the pom.xml file of my project to establish the dependency with this remote project. But I don't know how to specify this dependency and what information about the remote project I need to put in the pom and where I can find it.
At least I need what information I should write in the pom and I will look wherever for that information.
Thank you so much for your help!
A best practice is to use your own / company wide Maven Repository Manager such as Nexus and define a single repository group.
Use this Maven Repository Manager to share closed source artifacts (hosted repository) and to access Open Source repository such as Maven Central (proxy repository).
I know we can use the maven plugin to deploy the application to GCP. E.G
mvn appengine:deploy
But for certain reason, I would like to deploy the application not from the source code, but from artifacts repository (like Nexus).
What I want to do is to fetch the war from Nexus and use some command line to deploy the war to GCP. Anyone know how to?
I didn't find a way to do it but if you are interested in such functionality, you can use Cloud Source Repositories, which provides private Git repositories hosted on GCP.
You can use them to deploy in App Engine and even automate the process.
If you need to specifically use Nexus, you could file a feature request for App Engine.
I have a Maven component service that I package up as a WAR file. I would like to create another Maven project that builds a fully deployable Jetty container with a few custom configurations and contains my component service in it so that I can test my WAR or even deploy it. My questions for this scenario are:
Is it common to want to keep the WAR build separate from the distribution build? My thoughts behind doing this is that someone may not want to use my custom configured Jetty container. Maybe they want to create their own build with Tomcat or something else.
If this is a common thing to do, what packaging type should I use for the custom Jetty container project? It seems weird to me to use JAR or WAR since that isn't the actual artifact that ends up being built. And using "pom" packaging seems equally strange since I was under the impression that that is used for parent projects of submodules.
Ad 1. Yes, this is how I usually structure the project. There is an app project which is a container for application and a separate deploy project to handle the infrastructure. Regardless if it's building a container image, deploy to app server or whatsoever.
You can see it in an example project I've once created for a Devoxx presentation.
Ad 2. Default packaging (hence jar). If all you have in a project is a pom.xml (without any classes), no additional jar will be created nor installed. In the project I've mentioned the pom.xml contains only docker image creation 'logic'. In your scenario it will be jetty related plugin. No additional artifacts will be created.