Github user revans2 commented on a diff in the pull request:
https://github.com/apache/incubator-storm/pull/71#discussion_r11648153
--- Diff: storm-core/src/jvm/backtype/storm/torrent/SupervisorPeer.java ---
@@ -0,0 +1,67 @@
+package backtype.storm.torrent;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.InetAddress;
+import java.security.NoSuchAlgorithmException;
+import java.util.Map;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import backtype.storm.Config;
+
+import com.turn.ttorrent.client.Client;
+import com.turn.ttorrent.client.Client.ClientState;
+import com.turn.ttorrent.client.SharedTorrent;
+
+public class SupervisorPeer extends BasePeer{
+ private static final Logger LOG =
LoggerFactory.getLogger(SupervisorPeer.class);
+
+ private Integer seedDuration;
+
+ public SupervisorPeer(Map conf){
+ LOG.info("Creating supervisor bt tracker.");
+ this.maxDownload =
(Double)conf.get(Config.SUPERVISOR_BITTORRENT_MAX_DOWNLOAD_RATE);
+ this.maxUpload =
(Double)conf.get(Config.SUPERVISOR_BITTORRENT_MAX_UPLOAD_RATE);
+ this.seedDuration =
(Integer)conf.get(Config.SUPERVISOR_BITTORRENT_SEED_DURATION);
+ LOG.info("Download rates [U/D]: {}/{} kB/sec",
format(this.maxDownload), format(this.maxDownload));
+ }
+
+ public void stop(String topologyId){
+ LOG.info("Stopping bt client for topology {}", topologyId);
+ Client client = this.clients.remove(topologyId);
+ if(client != null){
+ client.stop();
+ }
+ rebalanceRates();
+ }
+
+ public void download(String torrentPath, String topologyId) throws
IOException, NoSuchAlgorithmException{
+ LOG.info("Initiating BitTorrent download.");
+ InetAddress netAddr = InetAddress.getLocalHost();
+ File torrentFile = new File(torrentPath);
+ File destDir = torrentFile.getParentFile();
+ LOG.info("Downloading with torrent file: {}",
torrentFile.getAbsolutePath());
+ LOG.info("Saving files to directory: {}",
destDir.getAbsolutePath());
+ SharedTorrent st = SharedTorrent.fromFile(torrentFile, destDir);
+
+ Client client = new Client(netAddr, st);
+ this.clients.put(topologyId, client);
+ rebalanceRates();
+ client.share(this.seedDuration);
+ if(this.seedDuration == 0){
--- End diff --
In what case would we want seedDuration to be nonzero? Wouldn't that mean
that we didn't completely download the file, and we are likely to crash when we
try to start the topology?
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