CI

[030]

https://chadmayfield.com/2018/09/01/pulling-artifacts-from-nexus-in-less-than-25-lines-of-bash/

#!/bin/bash

url="http://fileserver/service/rest/beta/search/assets?repository=maven-releases&name=dot-files"

artifact=( $(curl -s -X GET --header 'Accept: application/json' \
    "$url" | grep -Po '"downloadUrl" : ".*?[^\\]*.(zip.sha1|zip)",' | \
    awk -F '"' '{print $4}' | sort -Vr | head -n2) )

((${#artifact[@]})) || echo "ERROR! No artifacts found at provided url!"

for i in "${artifact[@]}"; do
    if [[ $i =~ (sha1) ]]; then
        checksum=$(curl -s "$i" | awk '{print $1}')
    else
        file="$(echo "$i" | awk -F "/" '{print $NF}')"
        curl -sO "$i" || { echo "ERROR: Download failed!"; exit 1; }

        if [ "$(sha1sum "$file" | awk '{print $1}')" != "$checksum" ]; then
            echo "ERROR: Checksum validation on $file failed!"; exit 1;
        else
            printf "Downloaded : %s\nChecksum   : %s\n" "$file" "$checksum"
        fi
    fi
done
#EOF

or

https://www.waltercedric.com/index.php/development/129-java/framework/maven-build-system/2302-fetching-artifact-programmatically-through-rest-api-in-nexus-3-x

#!/bin/sh

repo="https://nexus.url.com"
groupId=$1
artifactId=$2
version=$3

# optional
classifier=$4
type=$5

if [[ $type == "" ]]; then
  type="jar"
fi
if [[ $classifier != "" ]]; then
  classifier="-${classifier}"
fi

groupIdUrl="${groupId//.//}"
filename="${artifactId}-${version}${classifier}.${type}"

if [[ ${version} == *"SNAPSHOT"* ]]; then repo_type="snapshots"; else repo_type="releases"; fi

if [[ $repo_type == "releases" ]]
 then
   wget --no-check-certificate "${repo}/repository/releases/${groupIdUrl}/${artifactId}/${version}/${artifactId}-${version}${classifier}.${type}" -O ${filename} -k
 else
   versionTimestamped=$(wget -q -O- --no-check-certificate "${repo}/repository/snapshots/${groupIdUrl}/${artifactId}/${version}/maven-metadata.xml" | grep -m 1 \<value\> | sed -e 's/<value>\(.*\)<\/value>/\1/' | sed -e 's/ //g')

   wget --no-check-certificate "${repo}/repository/snapshots/${groupIdUrl}/${artifactId}/${version}/${artifactId}-${versionTimestamped}${classifier}.${type}" -O ${filename}
 fi

[030]

In order to get all artifacts:

curl -u user:pass -X GET "https://nexus-host/service/rest/v1/assets?repository=releases&continuationToken=some-token" -H  "accept: application/json"

All downloadUrls

./nexus-download.sh | jq .items[].downloadUrl

DownloadUrls for individual artifact

/service/rest/v1/search/assets?repository=releases&name=name&version=version" -H  "accept: application/json" | jq .items[].downloadUrl

The following returns more than 10.

v1/search/assets

Upload artifacts

curl -u admin:admin123 -X POST "http://localhost:8081/service/rest/v1/components?repository=maven-releases" -H  "accept: application/json" -H  "Content-Type: multipart/form-data" -F "maven2.asset1=@/home/user/.gradle/caches/modules-2/files-2.1/org.springframework/spring-beans/5.1.6.RELEASE/a7c61020fb4f4e937ed5cfef0d0d08c55d24cbb6/spring-beans-5.1.6.RELEASE.pom" -F "maven2.asset1.extension=pom" -F "maven2.asset2=@/home/user/.gradle/caches/modules-2/files-2.1/org.springframework/spring-beans/5.1.6.RELEASE/90d2f4bf7eced108de0b5bf617abb2b13a6206a3/spring-beans-5.1.6.RELEASE.jar" -F "maven2.asset2.extension=jar"

Find all artifacts downloadUrls

curl -X GET "http://localhost:8081/service/rest/v1/search/assets?repository=maven-releases" -H  "accept: application/json"

Download all artifacts

curl -u admin:admin123 -L -X GET "http://localhost:8081/service/rest/v1/search/assets/download?repository=maven-releases&name=spring-beans&version=5.1.6.RELEASE&maven.extension=jar" -H  "accept: application/json" -o spring-beans-5.1.6.jar

[030]

The job exceeded the maximum log length, and has been terminated.