Package maven artifacts from local repository - maven

I'm aware of artifactory (which is planned in the future), but it's requested to package the artifacts on our releases.
We currently do on a script:
printf "\nCopying artifacts...\n"
for artifact_dir in "$HOME"/.m2/repository/com/foo/{*-ear,*-ui,*-tool}; do
highest_version=$(find "${artifact_dir}"/* -maxdepth 1 -type d -printf "%f\n" | sort -V | tail -1)
artifact_name=$(basename "${artifact_dir}")
mkdir --parent "${artifacts_out}/com/foo/${artifact_name}/${highest_version}"
cp --archive "${artifact_dir}/${highest_version}"/* \
"${artifacts_out}/com/foo/${artifact_name}/${highest_version}"
done
But as you can see it's not very neat, p.e we can not create a release with older artifacts because the script always takes the newest one.
Is there a maven plugin or something that permits to archive specific artifacts ?

If you want to create bundles of artifacts, run the Maven assembly plugin during the build. It can be used to gather artifacts, zip them and deploy the result to Artifactory/Nexus.

Related

Recursively download maven artifacts of particular groupid and version

For the purpose of checking software licenses, I need to download all artifacts (source jars) of a particular group id and a particular version from the maven repo. There are many artifacts under this group id and many version too. So need to recursively find all artifacts under the groupid.
I tried this wget command but it doesn't seem to recurse into the directories below.
wget \
--accept-regex '.*-1.1.1-sources.jar$' \
--execute robots=off \
--recursive \
--no-parent \
--level=0 \
-U "Any User Agent" \
--reject '*.html*' \
https://repo1.maven.org/maven2/org/theGroupId/
Is it possible to do this with wget or any other tool?
(The artifacts are from third party software that runs as a standalone process. My code doesn't have direct maven dependencies with it.)

How to build OkHttp3 jar file from source code

I want to build a jar file from OkHttp library source code to use a snapshot version in my android app. I can not figure out how.
Any help is welcome. Thanks.
git clone https://github.com/square/okhttp
cd okhttp
./gradlew jar
mkdir /tmp/okhttplibs
find . -name '*.jar' | xargs -I % cp % /tmp/okhttplibs

maven local repository directories with dollar name - unresolved properties?

Currently I am debugging an annoying maven situation in which a simple
mvn dependency:tree
complains
The POM for com.bitplan.java:com.bitplan.bobase:jar:${bobase.version} is missing, no dependency information available
So it looks like a property is not defined somewhere. But the relevant parent pom clearly has:
<properties>
<bobase.version>0.0.2</bobase.version>
</properties>
What is more interesting is that I am not even referencing any relevant file with such a declaration directly.
In the process of this mishap in the local repository a directory:
./com/bitplan/java/com.bitplan.bobase/${bobase.version}
shows up. So I got curious and looked if there were more of these:
cd $HOME/.m2/repository
find . -type d | grep "\\$"
gives me some 27 results at this time e.g.
./net/sourceforge/htmlcleaner/htmlcleaner/${htmlcleaner.version}
./junit/junit/${junit.version}
./junit/junit/${junit4.version}
./org/hamcrest/hamcrest-all/${hamcrestall.version}
./org/apache/commons/commons-lang3/${commons.version}
./commons-io/commons-io/${commons-io.version}
./commons-io/commons-io/${commons.io.version}
./args4j/args4j/${args4j.version}
I only understand one of the cases - the commons.io.version one - that was a typo and I fixed it. All other variables should be dereferencing ok and there should not be any such directories.
What causes this maven behavior and how can it be avoided?
I only found one releated question:
Check for unresolved properties in Maven Resources
but that gave me no useful hint
debugging
find . -type d -name "*\$*" -exec echo -n {} \; -exec stat -f %Sm -t " "%Y-%m-%d {} \;
shows the last modification time of the directories. E.g.
./junit/junit/${junit.version} 2018-08-22
./junit/junit/${junit4.version} 2017-05-28
so in my case the issue seems to happen every once in a while.
mvn deploy
of the parent pom is necessary if the version of the pom has not been upgraded.
mvn install
is not sufficient. The resolution of variables will be done on the "old" settings from the repository.

How can you deploy a specific artifact from Jenkins into Nexus?

I have a multi-module maven project running in Jenkins. I would like to deploy the final artifact (an RPM from an assembly build) to the Nexus server. I see no reason to deploy intermediate artifacts (hence no "mvn clean deploy") since this will produce extra junk on the server that I don't need. We're trying to set up a continuous delivery pipeline, so we're not deploying SNAPSHOT versions - ever. The various plugins for Jenkins seem focused on deploying all of the artifacts. How can I just deploy the one I choose?
EDIT:
After much consideration, I'd be willing to deploy all the artifacts to nexus if the deploy happens after all of the build has completed. If I was going that route, I'd want to use the "Deploy artifacts to maven repository" post build action. This tool seems broken though because it's missing the functionality of specifying the username/password. I know this can be specified in the settings.xml, but apparently only the one in ".m2". It doesn't seem to be looking at the settings.xml I specified for this build.
This also seems like it's broken for redeploying artifacts. There is some verbage in "Jenkins the Definitive Guide" for this, but it talks about a "local" settings.xml. All my builds are happening on Jenkins slaves, so this isn't an option and doesn't even really make sense with the Jenkins architecture.
If you need still generic way.
Use Execute shell option and use the mvn deploy command manually, You can pass your version and others things such as groupID etc as parameters in job, If you maintain separate job to build and upload this will work out.
Ex:
export M2_HOME=/PATH/TO/softwares/apache-maven-3.0.4
PATH=$M2_HOME/bin:$JAVA_HOME/bin:$PATH
export PATH
mvn -v
mvn deploy:deploy-file -Durl=http://someorg:8081/nexus/content/repositories/t1.snapshot/ -DrepositoryId=t1.snapshot -DartifactId=artifactID -DgroupId=groupID -Dpackaging=zip -Dfile=${WORKSPACE}/filename.zip -Dversion=1.0-TEST-SNAPSHOT -s "/path/to/.m2/settings.xml"
You can make use of 'Deploy artifacts to Maven Repository' under 'Post-Build Actions'. Take look at this answer
Here's the ugly hack I came up with. I'll gladly give someone else the "correct" answer for this if anyone has a better idea:
I realized that I need to deploy both the parent pom.xml and the assembly. I did this in two separate post build steps.
First, I chose "Invoke top-level Maven targets" with a Maven Version of "Maven" (I think this uses Jenkins version of maven. I don't want to put a different version on the system). I used Goals of:
-s svn-admin/settings.xml -N deploy
That deploys just the parent pom to nexus with my specified settings.xml.
The REALLY big hack happens when I want to deploy the rpm. I tried a "deploy-file" target, but without a variable I could expand to the version number, I couldn't specify the exact file and wildcards don't expand. Instead I did an "Execute shell" option and used curl I found here:
env
UPLOAD_FILE=assembly/target/ips-${POM_VERSION}-x.x86_64.rpm
DESTINATION=http://mvnrepo01/nexus/content/repositories/releases/com/bla/ips/assembly/${POM_VERSION}/assembly-${POM_VERSION}.rpm
sha1sum ${UPLOAD_FILE} | awk -F" " '{print $1}' | curl -v -u admin:password --upload-file - ${DESTINATION}.sha1
md5sum ${UPLOAD_FILE} | awk -F" " '{print $1}' | curl -v -u admin:password --upload-file - ${DESTINATION}.md5
curl -v -u admin:password --upload-file ${UPLOAD_FILE} ${DESTINATION}
UPLOAD_FILE=assembly/pom.xml
DESTINATION=http://mvnrepo01/nexus/content/repositories/releases/com/bla/ips/assembly/${POM_VERSION}/assembly-${POM_VERSION}.pom
sha1sum ${UPLOAD_FILE} | awk -F" " '{print $1}' | curl -v -u admin:password --upload-file - ${DESTINATION}.sha1
md5sum ${UPLOAD_FILE} | awk -F" " '{print $1}' | curl -v -u admin:password --upload-file - ${DESTINATION}.md5
curl -v -u admin:password --upload-file ${UPLOAD_FILE} ${DESTINATION}
Like i said, this is an ugly hack. I'm pretty sure there are metadata files that aren't getting updated, but the rpm, it's pom, and their checksums are getting uploaded.
You can use Nexus Jenkins Plugin to deploy a specific artifact from Jenkins into Nexus:
https://support.sonatype.com/hc/en-us/articles/227256688-How-do-I-configure-the-Nexus-Jenkins-Plugin
Example of Jenkins pipeline:
stage('Publish') {
def pom = readMavenPom file: 'pom.xml'
nexusPublisher nexusInstanceId: 'your-nexus-instance-id', \
nexusRepositoryId: 'your-nexus-repository-id', \
packages: [[$class: 'MavenPackage', \
mavenAssetList: [[classifier: '', extension: '', filePath: "target/${pom.artifactId}-${pom.version}.${pom.packaging}"]], \
mavenCoordinate: [artifactId: "${pom.artifactId}", \
groupId: "${pom.groupId}", \
packaging: "${pom.packaging}", \
version: "${pom.version}"]]]
}
In this case Nexus Jenkins Plugin will deploy only your target/${pom.artifactId}-${pom.version}.${pom.packaging} and pom.xml files to Nexus repository.

Maven build to generate only changed artifact

In our project, Maven build generates artifacts for different modules i.e. jar, console, car etc in corresponding folder structure.
Everytime we check in the code, the build genarates full new artifacts even if there is only change in "console" module.
Is there any Maven plugin or a way to generate only the artifacts which were changed since last successful build?
For instance, if I have changed the code for "console" module, then the artifact generated should only have console file in its corresponding folder.
If you are on command line you can use
mvn -pl moduleToBuild
which can be combined with:
mvn -pl moduleToBuild -am
which will also build the dependencies of moduleToBuild.
If you are in a CI solution like jenkins there is a check box to activate this behaviour. This can be found under the Maven configuration part Incremental build - only build changed modules.
You have to start the maven call on the root of your multi-module build.
You may want to look at using maven reactor plugin's reactor:make-scm-changes goal. This link has example on how to use this.
I was looking for something that would check what files I have changed compared to the "upstream" version, and build all Maven modules which contain the files, and all depending on them.
Since reactor:make-scm-changes doesn't seem to do that, one way to do it (Linux Bash way) is to
list the changed files, using (git diff --name-only master...),
find the nearest pom.xml for all,
deduplicate (... | sort | uniq),
provide it to Maven as a list using --project-list, with --also-make.
The rest is joining it together using pipes and functions.
Of course this assumes that all sources are within the folder with pom.xml, which typically is true.
Here's an example of the approach mentioned by Ondra Žižka, using mvn clean install and bash.
Note, it ignores pom packaging modules (as those are typically roots of subtrees and would usually cause additional, unnecessary modules to be built. It also looks for pom.xml files 3 levels deep (for speed), assuming they're all part of the same reactor, but this can be adjusted to your project.
find . -maxdepth 3 -name pom.xml | xargs -I{} grep -iL -F "<packaging>pom</packaging>" {} | xargs dirname | grep -v target | sed -e 's/^.[/]*//g' | grep . > /tmp/mvn-modules.txt && git diff --name-only #{u}...HEAD | grep -o -F -f /tmp/mvn-modules.txt | xargs | tr ' ' ',' | xargs -I{} mvn clean install -U -pl {} -amd
In the example #{u}...HEAD references changes in current branch compared to upstream, but this can be swapped for another diff (example <branchname> master) if this is more suitable.

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