First off I'm not on a separate system in order to post this question and have no way of connecting the other system to the internet. This machine I'm on is locked down so I am not able to install or do anything other than email and view the web for research.
Used Reference: http://maven.apache.org/guides/getting-started/maven-in-five-minutes.html
Environment: Maven 2.2.1
Yes the Maven build functions fine for the existing project.
Situation:
I'm new to Maven and this project I'm on, the other developers are GONE. There is a .bat file that was used to run the project builds and that's all I know of Maven.
I am attempting to learn Maven on the other machine that has it installed I am using the Apache site mentioned above. The instructions tells me to create a project using the command
mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false but, I get the
'BUILD FAILURE'
Error reading archetype catalog http://repo1.maven.org/maven2... (and other errors)
The desired archetype does not exist (org.apache.maven.archetypes:maven-archetype=quickstart:1.0
So, question is what am I to do in order to create a dummy project so I can see WTF is going on with Maven when I'm in an environment that is not able to reach the 'maven.org' site?
If there are threads on learning Maven offline that someone can point me to that too would be of use. I'm not seeing anything though that helps me get started on this.
Thank you for looking and your time.
The problem seems that maven is looking for the architype on the central repository.
You can create your own pom.xml with an editor:
http://maven.apache.org/guides/introduction/introduction-to-the-pom.html
Related
I am learning about Jenkins and I have to explore some existing build jobs that others wrote (in the company that I'm working).
So I am trying to understand a job which uses mvn command.
So under the build part (inside the job), I see these details:
Maven version: 3.0.5
Root POM: pom:xml
Goals and options: clean install -U -Pnotest,docs
I'm trying to understand what this mvn command means?
I tried to google it: "clean install -U"
But I didn't find what the parameter U means.
And I don't know what is "-Pnotest,docs".
can you guide me regarding how I can find what's it? (maybe "-Pnotest,docs" is from a xml file or it's from the artifactory etc..)
Thanks a lot!!!!
-U Forces a check for miss releases and updated snapshots on remote repositories
If Maven is regularly used in your company, and you will have to work with it on a day-to-day basis, I would advise you to find a mentor (any colleague that knows the tool well and is ready to share its knowledge with you) and work with them. Maven, when you first look at it, can be quite of a mouthful and you'll learn it more efficiently with their help.
For the problem at hand, Elarbi Mohamed Aymen's answer already tells you what the -U flag corresponds to. As for -P, it is used to activate profiles (in your case notest and docs). These profiles are usually defined in the pom.xml of the project being build.
See Running Apache Maven for the basic commands, and as advised on that page run mvn -h to have the complete list of flags the command can use.
Maven is one of the mechanism how to handle the build process and check project dependencies, especially for Java.
One of the option can be to have physically included dependencies (artifacts / libs) in the project, but its not so useful- in case of new version, you have to replace the file, sometimes you are using same lib in more apps, ten you have to handle it manually in all projects.
Except this, there is the maven- it has a global repository with shared artifacts / libs , which are common used- ref. https://repo1.maven.org/maven2/.
Except this, you can make your own libs/ artifacts in this case, its a modules / applications which are reusable, then you are storing it in private repository- this is the artifactory.
When you want to build your project, in case of maven project you have pom.xml , which is like manual for maven what to do / how to build.
clean and install are common goals, clean will wipe your local maven repository, install will download them again, with parameter -U it force to download them.
You can define your own goals in pom file, eg. to "tree build"- build some dependent modules, then build parent project.
Eg. with -D you pass parameters to the maven eg.
mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app
- that will generate new project, based on given archetype- "template", with the given groupID and artifactID- groupID can be eg. company name, artifactID is then the name of specific app / component.
-P,--activate-profiles <arg> Comma-delimited list of profiles
to activate
-D,--define <arg> Define a system property
I have eclipse ide with m2e plugin, maven and weblogc app server running from my local box.
I have imported someone else's multiple maven projects from bitbucket to my box. I was told that one of them is main and rest are dependencies in which I never seen anything like that before. I have always dealt with single maven project. Anyhow from the instruction, it says I have to run maven command such as "clean install -U".
In the IDE so I touched run configuration for each mvn project by setting goal as "clean install -U". By reading maven guide, I kind understand what each term means but when you combine together with a passing parameter, what does it do actually? I didn't expect a jar (web app) to be deployed to an application server but it did also.
-U forces maven to check any external dependencies (third party dependencies) that might need to be updated based on your POM files.
clean install are both basic maven lifecycle phases (https://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html).
install normally would simply take the artifact that is built and put it in the local repository, i.e. a directory on the box you are building on (.m2 directory most of the time). It would not do a deployment to a server - typically the deploy phase would be used to do that.
However, developers can override and add to what maven does in the various phases, so just like in the days of ant things can easily devolve into chaos no one can understand on complex projects ;-).
sometimes in the integration-test phase, developers will tell maven to start up a container temporarily to run the web app on, so that tests can be run against it, and then that container is shut down when the integration-test phase completes.
I apologize if this sounds to simple (or the fact that there are other links that define this problem) - but I'm a complete beginner to Maven and even Java.
All that I'm trying to do is to run this code to see what it does:
https://github.com/semanticvectors/semanticvectors/wiki/GettingStarted
The Wiki says that uses can either download the .jar file or use the maven repo. I downloaded their .jar file and tried to run it but failed. I use this code:
java -jar /home/user/semanticvectors-5.6.jar
That .jar file didn't work for me and from other stackoverflow links, it seems that either the .jar file is not setup properly or I have a non-compatitble java version.
In any case, I've decided to try using Maven to get this running. I've installed Maven using:
sudo apt-get install maven
It seems to be working as everything was successful in setup. But now I'm not too sure what to do after. This Wiki (linked above) as go to this Maven repo site (https://oss.sonatype.org/#nexus-search;quick%7Esemanticvectors). To my understanding (and correct me if I'm wrong) I thought Maven is a super repository for developers and testers to work from the same code, so I thought I could use Maven as an alternative to running to program. Anyways, I'm open to any suggestions to get the program running to see what it does, thanks.
If you're interested in knowing more about me: I'm running a 16.04 Ubuntu system with Java 8.
The idea is that you can either build the JAR yourself - get the source from SVN and build it (using maven commands, as maven is a build tool), or you can use the existing JAR that is already "prepared" and ready for use in the maven-repository (nexus, in this case).
The result should be the same - if you use the JAR as a dependency in your code (add it to your pom.xml) or if you build it yourself.
You can learn more about Maven and things will be much clearer...
I have a multi module maven project ('assembler'), and I would like to add a FindBugs phase.
The problem is that some of the projects are not able to build stand alone since have dependencies on other projects... however when I invoke mvn package from the 'assembler' project - it works fine and all inner dependencies are resolved.
The problem is that when mvn findbugs:findbugs command is executed, those inner dependencies are not resolved, and maven complains.
Searching Google, I found a way to make it work, using mvn install, but I do not like this approach since eventually this should be used in CI with Jenkins and I do not want to rely on local maven repo on the build server.
Will appreciate hearing your ideas.
Thanks.
Don't be afraid of mvn install, it is your friend. What you need is to set up a centralized Maven repository (such as Nexus or Artifactory) or rent one (such as Bintray) to which you deploy your Maven artifacts to.
Jenkins or any other decent CI engine can do the actual deploying for you, either natively or through Maven. Once deployed, other users - Jenkins included - will be able to resolve their dependencies and you will be able to run FindBugs, PMD, JaCoco, host Javadoc or pretty much anything you want.
Side-note: Don't get confused by the term deploy as most people new to Maven usually get. In context of Maven, it has absolutely nothing to with your target environment. It simply means that an artifact is pushed out to a remote repository and nothing else.
I have Jenkins instance on Openshift
I've enabled Jenkins build of my Openshift application
Here part of Jenkins shell script parts and logs what they produce :
# Sync any libraries
rsync $upstream_ssh:~/.m2/ ~/.m2/
# Build/update libs and run user pre_build and build
gear build
command above triggers such action
+ gear build
Found pom.xml... attempting to build with 'mvn -e clean package -Popenshift -DskipTests'
Apache Maven 3.0.3 (r1075437; 2011-06-20 13:22:37-0400)
Maven home: /etc/alternatives/maven-3.0
I want to customize maven options (in this case allow to run test by deleting -DskipTests part )
Further in script I tried to add some steps combining with disabling this gear build command
# Run tests here
mvn -e clean package -Popenshfit
Above run mvn clean package but doesn't update last successful artifact, and logs shows
[WARNING] The requested profile "openshfit" could not be activated because it does not exist.
I have that profile in my pom.xml so I don't know what happening
<profiles>
<profile>
<id>openshift</id>
This is doesn't working to:
mvn --global-settings $OPENSHIFT_MAVEN_MIRROR clean package -Popenshift
Probably above is some old staff (taken from https://www.openshift.com/blogs/jenkins-polyglot-persistence-part-2)
Any idea about customizing this gear build or overriding maven options on Openshift are welcome :) I can make changes directly on machines (jenkins, jenkins-build) (as far free openshift account allow me :))
Edit
Some workaround is to run
gear build and then mvn clean package so I get build run twice and all test goals are meet and war is deployed on upstream instance and additionally Cobertura reports work fine with my Jbehave tests but this is inelegant, resources consuming solution.
I found this question while "Doing my homework" with regards to another question about Maven in OpenShift -- as to how OpenShift uses the Maven profile during the build process, broadly, as towards a goal of installing a "customized" third-party .war file providing the Liferay portal, along with some 'module' customizations, in an app using the 'jbossas' cartridge.
Although my portal-gproj app doesn't use Jenkins in its build -- as I expect that it won't have a spare gear available for Jenkins, initially, of the three "free gears" available to start with. It's a scalable app, though. However, I've found a reference item, as a blog entry by Bill DeCoste such that at least mentions two configuration features about Jenkins, as with regards to customization of OpenShift Maven builds in Jenkins: http://blog-judcon.rhcloud.com/?p=16 To summarize, the article mentions, with regards to Jenkins: One "Build/Execute shell section of the Job configuration."
Though I've not used Jenkins, myself, but I've seen it in use, however -- I think it's used in the eXo Platform for instance. I assume that Jenkins would have a sort of web-based interface for job configuration? (I tend to prefer the shell/filesystem interface onto Maven, personally)
Alternately, there is the OpenShift Origin Server source code, and an OpenShift Origin System Architecture Guide corresponding, as in reference to the OpenShift Origin baseline, on which (I assume) OpenShift Online is running, in its layer on the Amazon EC2 cloud. "If all else fails, there's the source code," just like in so many things Red Hat, LOL. It seems that there are both jenkins and jenkins-client cartridges under OpenShift Origin. Certainly, the details of the process used by either of those cartridges would be apparent from its source code.
Hope this helps! Coffee cheers.