We've just upgraded out nexus installation to the latest release (3.x). Is there any way to get the latest version of a given snapshot artifact? Nexus 2 had a nice API which is not supported anymore.
Same question (but for the old version) has been answered here: Sonatype Nexus REST Api fetch latest build version
Any ideas are highly appreciated.
Best, Daniel
Asof April 2019 there IS a REST API in Sonatype Nexus 3 for accessing the latest artefact
Documentation is here
http://community.sonatype.com/t/nxrm-3-16-rest-search-and-filtering-enhancements/1586
Use this endpoint /service/rest/v1/search/assets/download with repository, group and name arguments. Sorting by version will get you the latest timestamped snapshot.
Nexus 2 had a nice API which is not supported anymore.
It sounds like you are referring to these:
/service/local/artifact/maven/content
/service/local/artifact/maven/redirect
If you're asking to find the latest x.y.z-SNAPSHOT version where the x, y, z are guessed - Nexus never had this functionality (it worked only for plugins).
This is simply untrue - see the following article which shows clearly you can specify LATEST, RELEASE or SNAPSHOT base versions.
It's possible but not in a 1-liner.
Yes - unless you have a tool handy such as artifact-resolver which does uses a one line command to fetch an artifact.
What a joke re: Nexus 3 having no REST API.
I found a hack that alleviates my problem. Turns out that ansible has a nice maven_artifact module that is somehow able to figure out the latest snapshot. And you can run ansible locally. So it ends up looking like this:
ansible all -i localhost, -c local -m maven_artifact -a "repository_url=https://my-nexus/repository/maven-snapshots/ group_id=com.whatever artifact_id=my-artifact version=2.0-SNAPSHOT dest=./my-artifact.jar"
Bash one-liner using curl, jq, sort and tail :
NEXUS_URL=https://your-nexus.com
MAVEN_REPO=maven-snapshots
GROUP_ID=...
ARTIFACT_ID=...
VERSION=2.0.1-SNAPSHOT
FILE_EXTENSION=jar
download_url=$(curl -X GET "${NEXUS_URL}/service/rest/v1/search/assets?repository=${MAVEN_REPO}&maven.groupId=${GROUP_ID}&maven.artifactId=${ARTIFACT_ID}&maven.baseVersion=${VERSION}&maven.extension=${FILE_EXTENSION}" -H "accept: application/json" | jq -rc '.items | .[].downloadUrl' | sort | tail -n 1)
wget $download_url
If you ask for x.y.z-SNAPSHOT then by default the latest x.y.z-timestamp snapshot version will be downloaded. No need to do anything additional
If you're asking to find the latest x.y.z-SNAPSHOT version where the x, y, z are guessed - Nexus never had this functionality (it worked only for plugins). And I don't think there is any good use case for this. If this is needed, you're probably doing something wrong. You always should work with a specific version. Actually even for the 1st functionality I can't think of good use cases.
recently we faced the same problem with nexus version 3.12.1-01, so there is definitely not rest api to get latest snapshot directly
we were able to solve the problem using python one liner
JSON_RESPONSE=$(curl -u un:pw -X GET "http://nexus-host/nexus/service/rest/beta/search/assets?maven.groupId=sample.group.id&maven.artifactId=sample&maven.extension=jar" -H "accept: application/json")
echo $JSON_RESPONSE | python -c 'import sys, json; lines = json.load(sys.stdin)["items"]; sortedlines = sorted(lines, key=lambda k: k["downloadUrl"], reverse=True); print(sortedlines[0]["downloadUrl"])'
hope it helps
It's possible but not in a 1-liner. You need to fetch the maven-metadata.xml for each snapshot artifact you're after (note that multi-module projects have different timestamps for each module including the parent).
We use xlstproc to extract the relevant variables so we are still able to run from the command line without heavyweight tools like maven or ivy to do the resolution.
I've put together a groovy script that can be uploaded to Nexus which solves this particular issue with a POST request.
You can find the script and some usage instructions here: https://github.com/rbjorklin/resolve-latest-nexus-artifact
In my case, I wasn't getting anything back because I was missing the credentials require for my Nexus Server. Once I added them to both the CURL and WGET command, it worked for me.
NEXUS_URL=https://your-nexus.com
MAVEN_REPO=maven-snapshots
GROUP_ID=...
ARTIFACT_ID=...
VERSION=2.0.1-SNAPSHOT
FILE_EXTENSION=jar
download_url=$(curl --user admin:yourpassword -X GET "${NEXUS_URL}/service/rest/v1/search/assets?repository=${MAVEN_REPO}&maven.groupId=${GROUP_ID}&maven.artifactId=${ARTIFACT_ID}&maven.baseVersion=${VERSION}&maven.extension=${FILE_EXTENSION}" -H "accept: application/json" | jq -rc '.items | .[].downloadUrl' | sort | tail -n 1)
wget --user=admin --password=mypassword $download_url
