Bash script to copy all maven packages from a remote Artifact Registry repo to a standard Artifact Registry repo.

migrate-mvn-packages-from-remote-repo.sh

#!/usr/bin/env bash
set -e

# This script download artifacts from a remote maven AR repo [1]
# then upload them to a standard maven AR repo.

# Useful for transitioning gradually from 3rd party artifact repositories into AR

# [1] https://cloud.google.com/artifact-registry/docs/repositories/remote-overview
# [2] https://cloud.google.com/artifact-registry/docs/repositories#standard-repository

TMP_DIR=$(mktemp -d)
read -p "Enter GCP project name " GCP_PROJECT
read -p "Enter Remote AR repo name " REMOTE_REPO
read -p "Enter AR repos location " LOCATION
read -p "Enter target standard AR repo name " TARGET_REPO

POM_FILE=""
JAR_FILE=""

for p in $(gcloud artifacts packages list --repository=${REMOTE_REPO} --location=${LOCATION} --format='value(name)'); do
    mkdir ${TMP_DIR}/${p}
    for v in $(gcloud artifacts versions list --package=${p} --repository=${REMOTE_REPO} --location=${LOCATION} --format='value(name)'); do
        mkdir ${TMP_DIR}/${p}/${v}
        echo "package: ${p}, version: ${v}"
        for f in $(gcloud artifacts files list --package=${p} --version=${v} --repository=${REMOTE_REPO} --location=${LOCATION} --format='value(name)'); do
            echo "Downloading ${f}"
            gcloud artifacts files download \
                --project=${GCP_PROJECT} \
                --location=${LOCATION} \
                --repository=${REMOTE_REPO} \
                --destination=${TMP_DIR}/${p}/${v} \
                ${f}
        done
        POM_FILE=$(ls ${TMP_DIR}/${p}/${v} |grep -E '.pom$')
        JAR_FILE=$(ls ${TMP_DIR}/${p}/${v} |grep -E '.jar$')
        echo "Uploading to ${TARGET_REPO}, POM file: ${TMP_DIR}/${p}/${v}/${POM_FILE}, JAR file: ${TMP_DIR}/${p}/${v}/${JAR_FILE}"
        mvn deploy:deploy-file \
            -Durl=artifactregistry://${LOCATION}-maven.pkg.dev/${GCP_PROJECT}/${TARGET_REPO} \
            -DpomFile=${TMP_DIR}/${p}/${v}/${POM_FILE} -Dfile=${TMP_DIR}/${p}/${v}/${JAR_FILE}
    done
done