private boolean isUpToDate(URL u, File dest) throws IOException {
if (!dest.isFile()) {
return false;
}
HttpURLConnection con = null;
try {
con = URLSupport.openURL(u, options.getProxyServer());
con.setConnectTimeout(CONNECTION_TIMEOUT);
con.setRequestMethod("HEAD");
con.connect();
String serverLen = con.getHeaderField("Content-Length");
if (serverLen != null) {
long contentLength = Long.parseLong(serverLen);
if (dest.length() != contentLength) {
return false;
}
}
return true;
} finally {
Closer.close(con);
}
}
private List<String> getProviders() {
List<String> providers = URLSupport.getProtocolHandlerProviders();
providers.addAll(packagesAdded);
return providers;
}
@Override
public void run() {
File destinationFile =
new File(
destination,
artifact.getArtifactId()
+ ((options.isStripVersions()) ? "" : "-" + artifact.getVersion())
+ (artifact.getClassifier().isEmpty() ? "" : ("-" + artifact.getClassifier()))
+ ".jar");
for (String server : options.getServers()) {
URL u = artifact.toURL(server);
HttpURLConnection con = null;
BufferedInputStream bis = null;
BufferedOutputStream bos = null;
try {
if (!isUpToDate(u, destinationFile)) {
con = URLSupport.openURL(u, options.getProxyServer());
con.setConnectTimeout(CONNECTION_TIMEOUT);
con.connect();
bis = new BufferedInputStream(con.getInputStream());
bos = new BufferedOutputStream(new FileOutputStream(destinationFile));
Deque<TransferBuffer> dq = new ArrayDeque<TransferBuffer>();
ArtifactReader r =
new ArtifactReader(
project,
bis,
dq,
BUFFER_SIZE,
options.isCheckSHADigests() && !artifact.getDigest().isEmpty());
Thread rt = new Thread(r);
rt.start();
ArtifactWriter w = new ArtifactWriter(project, bos, dq);
Thread wt = new Thread(w);
wt.start();
rt.join();
wt.join();
if (r.wasSuccessful() && w.wasSuccessful()) {
if (options.isCheckSHADigests() && !artifact.getDigest().isEmpty()) {
if (!digestEquals(artifact, r.getDigest())) {
artifact.setStatus(Artifact.Status.DIGEST_MISMATCH);
destinationFile.deleteOnExit();
project.log(
"download failed with incorrect digest: "
+ artifact
+ " - actual: "
+ byteArrayDigestToHexString(r.getDigest()),
Project.MSG_ERR);
return;
}
}
artifact.setStatus(Artifact.Status.DOWNLOADED);
}
} else {
artifact.setStatus(Artifact.Status.UPTODATE);
}
project.log(
"download successful: " + artifact,
(artifact.getStatus() != Artifact.Status.UPTODATE)
? Project.MSG_ERR
: Project.MSG_VERBOSE);
return;
} catch (Exception e) {
if (!YankTask.SOURCE_CLASSIFIER.equals(artifact.getClassifier())) {
project.log(e.getMessage(), e, Project.MSG_VERBOSE);
project.log("download failed: " + artifact, Project.MSG_ERR);
}
artifact.setStatus(Artifact.Status.FAILED);
} finally {
Closer.close(bis);
Closer.close(bos);
Closer.close(con);
}
}
}
