Maven: implement parent snapshot lookup #5924
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jakecoffman
commented
Oct 18, 2022
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| def remote_pom_snapshot_url(group_id, artifact_id, version, snapshot_version, base_repo_url) | ||
| "#{base_repo_url}/" \ | ||
| "#{group_id.tr('.', '/')}/#{artifact_id}/#{version}/" \ | ||
| "#{artifact_id}-#{snapshot_version}.pom" | ||
| end | ||
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| def remote_pom_snapshot_metadata_url(group_id, artifact_id, version, base_repo_url) | ||
| "#{base_repo_url}/" \ | ||
| "#{group_id.tr('.', '/')}/#{artifact_id}/#{version}/" \ | ||
| "maven-metadata.xml" | ||
| end | ||
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| def fetch_snapshot_pom_url(group_id, artifact_id, version, base_url) | ||
| url = remote_pom_snapshot_metadata_url(group_id, artifact_id, version, base_url) | ||
| response = fetch(url) | ||
| return nil unless response.status == 200 | ||
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| snapshot = Nokogiri::XML(response.body). | ||
| css("snapshotVersion"). | ||
| find { |node| node.at_css("extension").content == "pom" }. | ||
| at_css("value").content | ||
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| remote_pom_snapshot_url(group_id, artifact_id, version, snapshot, base_url) | ||
| end |
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This is the new snapshot fetching logic.
jakecoffman
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Oct 18, 2022
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| if version.include?("SNAPSHOT") | ||
| fetch_snapshot_pom_url(group_id, artifact_id, version, base_url) | ||
| else | ||
| remote_pom_url(group_id, artifact_id, version, base_url) | ||
| end |
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This is the new detection of snapshots.
jakecoffman
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In ba56381 I found a few places where credentials were not being passed in, so this mitigates the issue I was seeing that I mentioned above. If the repositories are specified in dependabot.yml things should now work. |
brrygrdn
reviewed
Oct 19, 2022
| def repository_finder | ||
| @repository_finder ||= | ||
| Maven::FileParser::RepositoriesFinder.new( | ||
| pom_fetcher: Maven::FileParser::PomFetcher.new(dependency_files: dependency_files), |
mattt
reviewed
Oct 19, 2022
pavera
approved these changes
Oct 19, 2022
This was referenced Oct 19, 2022
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Context
In Maven, a snapshot is a prerelease version. So 1.0-SNAPSHOT is like 1.0-alpha, for example, but there can be many of these produced and usually they have timestamps as filenames.
Since there are multiple snapshots, Maven maintains a maven-metadata.xml file that points to the current version of several files including the POM.
Solution
In this PR I've implemented detection of a snapshot version by checking to see if "SNAPSHOT" is present, and if so try to get the metadata file to find the current snapshot pom file.
There was also a lot of duplication between PropertyValueFinder and RepositoriesFinder, and I was adding more to it. So I split out a new class which encapsulates the fetching of the POM files. This has the added benefit of now those two classes share the same POM cache, before they did not.
Ongoing
I'm still hunting down one issue where when using a private registry, when a parent pom has a parent itself, Dependabot stops using the private registry and tries to use central.