How to get pure JSON output

[lindhe]

How are you running Renovate?

Self-hosted Renovate

If you're self-hosting Renovate, tell us which platform (GitHub, GitLab, etc) and which version of Renovate.

Docker

Please tell us more about your question or problem

When trying out new configs today, I use this command:

docker run -e RENOVATE_GITHUB_COM_TOKEN="${GH_TOKEN:?}" -e LOG_LEVEL=info --rm -v "$(pwd)":/usr/src/app ghcr.io/renovatebot/renovate:latest --print-config --dry-run=extract --platform local

That seems to partially output JSON but partially other things (like INFO: … etc). I'm probably missing something glaringly obvious, but I can't figure out how to get pure JSON (or otherwise easy-to-parse) output.

Any suggestions? 🙂

Logs (if relevant)

Sample output

$ docker run -e RENOVATE_GITHUB_COM_TOKEN="${GH_TOKEN:?}" -e LOG_LEVEL=info --rm -v "$(pwd)":/usr/src/app ghcr.io/renovatebot/renovate:latest --print-config --dry-run=extract --platform local
 INFO: Repository started (repository=local)
       "renovateVersion": "41.160.1"
fatal: detected dubious ownership in repository at '/usr/src/app'
To add an exception for this directory, call:

        git config --global --add safe.directory /usr/src/app
fatal: detected dubious ownership in repository at '/usr/src/app'
To add an exception for this directory, call:

        git config --global --add safe.directory /usr/src/app
 INFO: Full resolved config and hostRules including presets (repository=local)
       "config": {
         "mode": "full",
         "detectGlobalManagerConfig": false,
         "detectHostRulesFromEnv": false,
         "useCloudMetadataServices": true,
         "bumpVersions": [],
         "postUpgradeTasks": {
           "commands": [],
           "fileFilters": [],
           "executionMode": "update"
         },
[…]

[jamietanna]

Via what you're looking for is LOG_FORMAT=json

That'll give you newline-delimited JSON (one JSON object per line of output)

[lindhe]

Ah, of course! I was so caught up in all the flags that I missed looking for env vars. Thanks a lot! ⭐

[jamietanna]

NP - would welcome any suggestions you've got / a PR to help make it more visible too 🙏

(I knew the environment variable I wanted, but took me a bit to find out where it documented)

[lindhe]

Renovate's documentation is unusually good I'd say, but sometimes a bit overwhelming. But I think that's more of a testament to the huge number of options in Renovate rather than a problem with the documentation per se.

But I'll make sure to contribute whenever I find something that I think I can help clarifying. 👍

Thanks again. You really go above and beyond helping me out here, I really appreciate it.