public ResolvedModuleRevision cacheModuleDescriptor(DependencyResolver resolver,
final ResolvedResource mdRef, DependencyDescriptor dd, Artifact moduleArtifact,
ResourceDownloader downloader, CacheMetadataOptions options) throws ParseException {
Date cachedPublicationDate = null;
ArtifactDownloadReport report;
ModuleRevisionId mrid = moduleArtifact.getModuleRevisionId();
if (!lockMetadataArtifact(mrid)) {
Message.error("impossible to acquire lock for " + mrid);
return null;
}
BackupResourceDownloader backupDownloader = new BackupResourceDownloader(downloader);
try {
if (!moduleArtifact.isMetadata()) {
// the descriptor we are trying to cache is a default one, not much to do
// just make sure the old artifacts are deleted...
if (isChanging(dd, mrid, options)) {
long repoLastModified = mdRef.getLastModified();
Artifact transformedArtifact = NameSpaceHelper.transform(moduleArtifact,
options.getNamespace().getToSystemTransformer());
ArtifactOrigin origin = getSavedArtifactOrigin(transformedArtifact);
File artFile = getArchiveFileInCache(transformedArtifact, origin, false);
if (artFile.exists() && repoLastModified > artFile.lastModified()) {
// artifacts have changed, they should be downloaded again
Message.verbose(mrid + " has changed: deleting old artifacts");
Message.debug("deleting " + artFile);
if (!artFile.delete()) {
Message.error("Couldn't delete outdated artifact from cache: "
+ artFile);
return null;
}
removeSavedArtifactOrigin(transformedArtifact);
}
}
return null;
}
// now let's see if we can find it in cache and if it is up to date
ResolvedModuleRevision rmr = doFindModuleInCache(mrid, options, null);
if (rmr != null) {
if (rmr.getDescriptor().isDefault() && rmr.getResolver() != resolver) {
Message.verbose("\t" + getName() + ": found revision in cache: " + mrid
+ " (resolved by " + rmr.getResolver().getName()
+ "): but it's a default one, maybe we can find a better one");
} else {
if (!isCheckmodified(dd, mrid, options) && !isChanging(dd, mrid, options)) {
Message.verbose("\t" + getName() + ": revision in cache: " + mrid);
rmr.getReport().setSearched(true);
return rmr;
}
long repLastModified = mdRef.getLastModified();
long cacheLastModified = rmr.getDescriptor().getLastModified();
if (!rmr.getDescriptor().isDefault() && repLastModified <= cacheLastModified) {
Message.verbose("\t" + getName() + ": revision in cache (not updated): "
+ mrid);
rmr.getReport().setSearched(true);
return rmr;
} else {
Message.verbose("\t" + getName()
+ ": revision in cache is not up to date: " + mrid);
if (isChanging(dd, mrid, options)) {
// ivy file has been updated, we should see if it has a new publication
// date to see if a new download is required (in case the dependency is
// a changing one)
cachedPublicationDate = rmr.getDescriptor()
.getResolvedPublicationDate();
}
}
}
}
Artifact originalMetadataArtifact = getOriginalMetadataArtifact(moduleArtifact);
// now download module descriptor and parse it
report = download(originalMetadataArtifact, new ArtifactResourceResolver() {
public ResolvedResource resolve(Artifact artifact) {
return mdRef;
}
}, backupDownloader, new CacheDownloadOptions().setListener(options.getListener())
.setForce(true));
Message.verbose("\t" + report);
if (report.getDownloadStatus() == DownloadStatus.FAILED) {
Message.warn("problem while downloading module descriptor: " + mdRef.getResource()
+ ": " + report.getDownloadDetails() + " ("
+ report.getDownloadTimeMillis() + "ms)");
return null;
}
try {
ModuleDescriptorParser parser = ModuleDescriptorParserRegistry.getInstance()
.getParser(mdRef.getResource());
ParserSettings parserSettings = settings;
if (resolver instanceof AbstractResolver) {
parserSettings = ((AbstractResolver) resolver).getParserSettings();
}
ModuleDescriptor md = getStaledMd(parser, options, report.getLocalFile(),
parserSettings);
if (md == null) {
throw new IllegalStateException(
"module descriptor parser returned a null module descriptor, "
+ "which is not allowed. " + "parser=" + parser
+ "; parser class=" + parser.getClass().getName()
+ "; module descriptor resource=" + mdRef.getResource());
}
Message.debug("\t" + getName() + ": parsed downloaded md file for " + mrid
+ "; parsed=" + md.getModuleRevisionId());
// check if we should delete old artifacts
boolean deleteOldArtifacts = false;
if (cachedPublicationDate != null
&& !cachedPublicationDate.equals(md.getResolvedPublicationDate())) {
// artifacts have changed, they should be downloaded again
Message.verbose(mrid + " has changed: deleting old artifacts");
deleteOldArtifacts = true;
}
if (deleteOldArtifacts) {
String[] confs = md.getConfigurationsNames();
for (int i = 0; i < confs.length; i++) {
Artifact[] arts = md.getArtifacts(confs[i]);
for (int j = 0; j < arts.length; j++) {
Artifact transformedArtifact = NameSpaceHelper.transform(arts[j],
options.getNamespace().getToSystemTransformer());
ArtifactOrigin origin = getSavedArtifactOrigin(transformedArtifact);
File artFile = getArchiveFileInCache(transformedArtifact, origin, false);
if (artFile.exists()) {
Message.debug("deleting " + artFile);
if (!artFile.delete()) {
// Old artifacts couldn't get deleted!
// Restore the original ivy file so the next time we
// resolve the old artifacts are deleted again
backupDownloader.restore();
Message.error("Couldn't delete outdated artifact from cache: "
+ artFile);
return null;
}
}
removeSavedArtifactOrigin(transformedArtifact);
}
}
} else if (isChanging(dd, mrid, options)) {
Message.verbose(mrid
+ " is changing, but has not changed: will trust cached artifacts if any");
}
MetadataArtifactDownloadReport madr = new MetadataArtifactDownloadReport(
md.getMetadataArtifact());
madr.setSearched(true);
madr.setDownloadStatus(report.getDownloadStatus());
madr.setDownloadDetails(report.getDownloadDetails());
madr.setArtifactOrigin(report.getArtifactOrigin());
madr.setDownloadTimeMillis(report.getDownloadTimeMillis());
madr.setOriginalLocalFile(report.getLocalFile());
madr.setSize(report.getSize());
Artifact transformedMetadataArtifact = NameSpaceHelper.transform(
md.getMetadataArtifact(), options.getNamespace().getToSystemTransformer());
saveArtifactOrigin(transformedMetadataArtifact, report.getArtifactOrigin());
return new ResolvedModuleRevision(resolver, resolver, md, madr);
} catch (IOException ex) {
Message.warn("io problem while parsing ivy file: " + mdRef.getResource(), ex);
return null;