AfflictionNetworks/getdown
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Support running applications when not connected to the internets by specifying

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allow_offline=true in the getdown.txt file.
This commit is contained in:
Michael Bayne
2009-08-18 04:27:12 +00:00
parent 8949cbd90a
commit 7332c71e5d
1 changed files with 27 additions and 6 deletions
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src/java/com/threerings/getdown/data/Application.java
+27 -6
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@@ -567,6 +567,9 @@ public class Application
// determine whether or not we should be using bit torrent
_useTorrent = (cdata.get("torrent") != null) || (System.getProperty("torrent") != null);
// determine whether we want to allow offline operation (defaults to false)
_allowOffline = Boolean.parseBoolean((String)cdata.get("allow_offline"));
// look for a debug.txt file which causes us to run in java.exe on Windows so that we can
// obtain a thread dump of the running JVM
_windebug = getLocalPath("debug.txt").exists();
@@ -702,11 +705,28 @@ public class Application
throw (IOException) new IOException(err).initCause(mue);
}
// now re-download our control files; we download the digest first so that if it fails, our
// config file will still reference the old version and re-running the updater will start
// the whole process over again
downloadDigestFile();
downloadConfigFile();
try {
// now re-download our control files; we download the digest first so that if it fails,
// our config file will still reference the old version and re-running the updater will
// start the whole process over again
downloadDigestFile();
downloadConfigFile();
} catch (IOException ex) {
// if we are allowing offline execution, we want to allow the application to run in its
// current form rather than aborting the entire process; to do this, we delete the
// version.txt file and "trick" Getdown into thinking that it just needs to validate
// the application as is; next time the app runs when connected to the internet, it
// will have to rediscover that it needs updating and reattempt to update itself
if (_allowOffline) {
log.warning("Failed to update digest files. Attempting offline operaton.", ex);
if (!getLocalPath(VERSION_FILE).delete()) {
log.warning("Deleting version.txt failed. This probably isn't going to work.");
}
} else {
throw ex;
}
}
}
/**
@@ -1377,7 +1397,8 @@ public class Application
protected String _name;
protected String _dockIconPath;
protected boolean _windebug;
protected boolean _useTorrent = false;
protected boolean _useTorrent;
protected boolean _allowOffline;
protected String _trackingURL;
protected ArrayIntSet _trackingPcts;