https://search.maven.org/artifact/com.google.cloud/google-cloud-bom/0.121.0-alpha/pom

~/java-cloud-bom $ cat pom.xml |perl -nle 'print $1 if m/<artifactId>(.+-bom)</' |grep -v google-cloud-bom |sed -e 's/^/- /'

gives 47 BOMs used by google-cloud-bom:

• gax-bom https://github.com/googleapis/gax-java
• google-auth-library-bom https://github.com/googleapis/google-auth-library-java
• google-cloud-core-bom https://github.com/googleapis/java-core
• google-cloud-asset-bom https://github.com/googleapis/java-asset
• google-cloud-automl-bom https://github.com/googleapis/java-automl
• google-cloud-bigquerydatatransfer-bom https://github.com/googleapis/java-bigquerydatatransfer
• google-cloud-bigquerystorage-bom https://github.com/googleapis/java-bigquerystorage
• google-cloud-bigtable-bom https://github.com/googleapis/java-bigtable
• google-cloud-billingbudgets-bom https://github.com/googleapis/java-billingbudgets
• google-cloud-build-bom https://github.com/googleapis/java-cloudbuild
• google-cloud-container-bom https://github.com/googleapis/java-container
• google-cloud-containeranalysis-bom https://github.com/googleapis/java-containeranalysis
• google-cloud-datacatalog-bom https://github.com/googleapis/java-datacatalog
• google-cloud-datalabeling-bom https://github.com/googleapis/java-datalabeling
• google-cloud-dataproc-bom https://github.com/googleapis/java-dataproc
• google-cloud-dlp-bom https://github.com/googleapis/java-dlp
• google-cloud-dialogflow-bom https://github.com/googleapis/java-dialogflow
• google-cloud-errorreporting-bom https://github.com/googleapis/java-errorreporting
• google-cloud-firestore-bom https://github.com/googleapis/java-firestore
• google-cloud-gameservices-bom https://github.com/googleapis/java-gameservices
• google-cloud-iamcredentials-bom https://github.com/googleapis/java-iamcredentials
• google-cloud-irm-bom
• google-cloud-iot-bom
• google-cloud-kms-bom
• google-cloud-language-bom
• google-cloud-logging-bom
• google-cloud-monitoring-bom
• google-cloud-os-login-bom
• google-cloud-phishingprotection-bom
• google-cloud-pubsub-bom
• google-cloud-recaptchaenterprise-bom
• google-cloud-recommender-bom
• google-cloud-redis-bom
• google-cloud-scheduler-bom
• google-cloud-secretmanager-bom
• google-cloud-securitycenter-bom
• google-cloud-spanner-bom
• google-cloud-speech-bom
• google-cloud-talent-bom
• google-cloud-tasks-bom
• google-cloud-texttospeech-bom
• google-cloud-trace-bom
• google-cloud-translate-bom
• google-cloud-video-intelligence-bom
• google-cloud-vision-bom
• google-cloud-websecurityscanner-bom
• google-cloud-webrisk-bom

With #1154 fixed, these repositories above can run Linkage Monitor.

https://github.com/googleapis/google-auth-library-java has two widely-used Maven artifacts:

• com.google.auth:google-auth-library-oauth2-http:0.18.0
• com.google.auth:google-auth-library-credentials:0.18.0

The two artifacts are not part of our BOM
https://storage.googleapis.com/cloud-opensource-java-dashboard/com.google.cloud/libraries-bom/snapshot/artifact_details.html, and thus setting up Linkage Monitor does not check anything as of current implementation.

Still, there's pain for updating the BOM if there's incompatible change in these libraries. We may need to think how we can address such cases where the artifacts are not in BOM but play important role in artifact compatibility.