/**
* Attempts to download and cache a remote artifact using a set of remote repositories. The
* operation is not fail fast and so it keeps trying if the first repository does not have the
* artifact in question.
*
* @param artifact the artifact to retrieve and cache
* @return input stream containing the artifact content.
* @exception IOException if an IO error occurs.
* @exception TransitException if a transit system error occurs.
* @exception NullArgumentException if the artifact argument is null.
*/
public InputStream getResource(Artifact artifact)
throws IOException, TransitException, NullArgumentException {
File destination = getResourceFile(artifact);
if (destination.exists()) {
FileInputStream stream = new FileInputStream(destination);
return new BufferedInputStream(stream);
}
String error = "Unresolvable artifact: [" + artifact + "]. (" + destination + ")";
throw new ArtifactNotFoundException(error, artifact.toURI());
}
