Module com.darkcollective.relix.processor
Package com.darkcollective.relix.processor.connector.internal

Class DriverDownloader

java.lang.Object
com.darkcollective.relix.processor.connector.internal.DriverDownloader
public final class DriverDownloader extends Object
Downloads driver Artifacts into the driver directory, verifying each against its SHA-256 before it is trusted.

An artifact is a URL and a digest, so this works the same for a JDBC driver and for a connector plugin's JARs — the two callers of it.

Integrity is mandatory: a byte stream whose digest does not match the manifest is rejected (never written), so a tampered mirror or a corrupted transfer cannot install a driver. An artifact already present with a matching checksum is skipped, so provisioning is idempotent. Writes are atomic (download to a temp file, verify, then move into place).

  • Constructor Details

    • DriverDownloader

      public DriverDownloader(Path targetDirectory, Fetcher fetcher)
      Parameters:
      targetDirectory - the directory to download JARs into (created if absent)
      fetcher - the byte-fetching seam

  • Method Details

    • download

      public List<Path> download(List<Artifact> artifacts) throws IOException
      Downloads a list of artifacts into the target directory (creating it), each verified against its SHA-256. Shared by driver and connector-plugin provisioning.
      Parameters:
      artifacts - the artifacts to download
      Returns:
      the paths of the downloaded (or already-present) JARs
      Throws:
      IOException - if a download fails or a checksum does not match