Suppose when I make a java spring boot application, it needs jars .
But when I deploy my app to cloud foundry will all the jars get build with my app and then go to cloud foundry or cloud foundry provides the jars dependency by seeing pom etc.
I have seen build folder but the jars are not there so how does it work.
I am new to cloud foundry so if someone can clear my doubt.
For most application types and build packs, when you push an application to Cloud Foundry you are pushing source code, and, if necessary, that source codes gets compiled during the staging process by the build pack. For example, with the Golang build pack you push your Go source code and it's compiled in staging and then run.
The two exceptions to this rule are the Java build pack and the binary build pack. These two build packs assume that you are pushing compiled bits and do not compile anything for you.
In the case of Java, this means that you're going to run Maven, Gradle or some other build system locally or on your CI system to produce a deployable artifact. This could be a WAR file or a JAR file, or a few other things (see "Standard Containers" on the Java build pack docs for other supported formats). Regardless of the format, it needs to be a complete and deployable unit, so it will need to include all dependent libraries.
As a side note, the cf cli has a nice feature that helps to speed up the cf push process and save bandwidth. It matches any files being uploaded and over 65k in size (default, operators can change this) to files cached on the Cloud Controller. If a local file already exists in the cache, it is not uploaded again. This works great for dependent JAR files which don't often change between pushes.
Spring Boot apps are typically packaged as "fat jars" using the Spring Boot maven or gradle plugin. The application code and all dependent jars are packaged into a single jar file.
Cloud Foundry will not download dependent jars when a Java application is deployed. It is the app's responsibility to bring all dependencies with it.
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What steps are required to make a executable war without unpacking the war. ( Similar to the way spring boot does). Basically want to wrap Embedded Tomcat into existing war and make it execurable.
Env: Spring mvc, Java 7, Webapp with web.xml
So far I have done following research:
How Spring boot creates Embedded container in TomcatEmbeddedServletContainerFactory, but all those WebApploader stuff I'm not able to understsnd.
Successfull in packaging a executable war just using spring boot maven plugin but not able to run without unpacking it.
Tomcat api class doesn't read app from war directly.
Have successfully tested embedded tomcat by extracting it in a particular location and calling addWebapp method.
I do not want to create a big fat jar using shade plugin.
Do not want to specify path like src/main as indicated on many examples on the internet.
Upgrading the app to spring boot web is not possible due to time and other dependencies.
I have a build pipeline and a release pipeline. The solution I'm building contains a web project and a class library project containing selenium tests.
Currently, the web project is copied to the artifact staging location and then published. The release pipeline takes care of publishing the web application to the hosting location.
I would like to run the tests in the class library but without publishing the project build to the hosting location.
This page appears to indicate that the build should produce the output of both the web project and the test project:
https://learn.microsoft.com/en-us/vsts/build-release/test/getting-started-with-continuous-testing?view=vsts
As I don't want to publish the test project, how should I configure a build to provide me with both sets of binaries while hosting only one?
Publish two sets of artifacts with your build: One containing the application, one containing the tests.
You can then deploy the application normally and skip deploying the tests, then run the tests at the point in your pipeline that it makes sense.
There are many ways to get test project/assembly, but publish the files to artifact is better and simple.
Add additional artifact with Git/GitHub/TFVC … source type (where the
test project source in) to release definition, then build the test
project and run test
Add additional task(s) to download the test project/assembly, such as
windows machine copy, FTP download … or you can do it programming
(e.g. PowerShell)
I am deploying a spring-mvc application which uses JPA to access MySQL database. Access information is stored in persistence.xml, while creating a deployment war file I would like to replace developer persistence with the production one.
I tried to copy the production xml directly into the deployment folder (intellij settings), but it has no effect a dev. copy is always deployed.
How do I configure IDE to do that?
If your project is mavenised, then you can use the maven-war-plugin or maven-resources-plugin to customise the resources used to build the war, and the ide should honour these plugins.
Can anyone provide insights of using Jenkins for automating deployment under controlled and uncontrolled enviroments. We have different environments - dev/qa/uat/prod and currently we are using batch files that call msbuild/nant scripts to deploy on web and DB servers (web farm). Developers only have access to dev/qa and production support will deploy on uat/prod. Prod. support will get the source code from SVN tag folder and run the batch file to deploy the application.
By using Jenkins, is it possible to eliminate the step of prod. support team getting the script from SVN by running the jobs using their credentials via url. And what is the general practice using source control and CI tool for deploying applications.
My recommendation is to reserve Jenkins for just building the software. That way the user of Jenkins only have access to development and perhaps QA systems.
To decouple the build system from the process that deploys the software I recommend the use of a binary repository manager like:
Nexus
Artifactory
Archiva
In that way deployment scripts could retrieve any version of a previous build. The use of a repository manager would enable your QA team to certify a release prior to it's deployment onto production.
Finally, consider one of the emerging deployment automation tools. Tools like Chef, Puppet, Rundeck can be used to further version control the configuration of your infrastructure.
I am new to deployment and development of web applications.
Suppose I create three jar files and deploy them on a Tomcat server. I use maven to install the jar file and to deploy.
How is it possible to call a method in another jar file?
For example:
I developed a simple application in mytwitter.jar.
Then, I create myapp.jar, where one of the classes needs to call a method in mytwitter.jar.
Do I first deploy mytwitter.jar to the server and myapp.jar later?
You package all of the JARs you need (yours and 3rd party alike) into a WAR file which is what gets deployed to the Tomcat server. So in your maven config you likely already have dependencies configured for things like the twitter API and other packages. Just add your own JARs in there as well and then your code has access to it like anything else.