/** Do a fresh start then quietly finish the sync, starting another. */
public void freshStart() {
final GlobalSession globalSession = this;
freshStart(
this,
new FreshStartDelegate() {
@Override
public void onFreshStartFailed(Exception e) {
globalSession.abort(e, "Fresh start failed.");
}
@Override
public void onFreshStart() {
try {
Logger.warn(LOG_TAG, "Fresh start succeeded; restarting global session.");
globalSession.config.persistToPrefs();
globalSession.restart();
} catch (Exception e) {
Logger.warn(LOG_TAG, "Got exception when restarting sync after freshStart.", e);
globalSession.abort(e, "Got exception after freshStart.");
}
}
});
}
public void processMissingMetaGlobal(MetaGlobal global) {
freshStart();
}
/*
* meta/global callbacks.
*/
public void processMetaGlobal(MetaGlobal global) {
config.metaGlobal = global;
Long storageVersion = global.getStorageVersion();
if (storageVersion == null) {
Logger.warn(
LOG_TAG, "Malformed remote meta/global: could not retrieve remote storage version.");
freshStart();
return;
}
if (storageVersion < STORAGE_VERSION) {
Logger.warn(
LOG_TAG,
"Outdated server: reported "
+ "remote storage version "
+ storageVersion
+ " < "
+ "local storage version "
+ STORAGE_VERSION);
freshStart();
return;
}
if (storageVersion > STORAGE_VERSION) {
Logger.warn(
LOG_TAG,
"Outdated client: reported "
+ "remote storage version "
+ storageVersion
+ " > "
+ "local storage version "
+ STORAGE_VERSION);
requiresUpgrade();
return;
}
String remoteSyncID = global.getSyncID();
if (remoteSyncID == null) {
Logger.warn(LOG_TAG, "Malformed remote meta/global: could not retrieve remote syncID.");
freshStart();
return;
}
String localSyncID = config.syncID;
if (!remoteSyncID.equals(localSyncID)) {
Logger.warn(
LOG_TAG,
"Remote syncID different from local syncID: resetting client and assuming remote syncID.");
resetAllStages();
config.purgeCryptoKeys();
config.syncID = remoteSyncID;
}
// Compare lastModified timestamps for remote/local engine selection times.
Logger.debug(
LOG_TAG,
"Comparing local engine selection timestamp ["
+ config.userSelectedEnginesTimestamp
+ "] to server meta/global timestamp ["
+ config.persistedMetaGlobal().lastModified()
+ "].");
if (config.userSelectedEnginesTimestamp < config.persistedMetaGlobal().lastModified()) {
// Remote has later meta/global timestamp. Don't upload engine changes.
config.userSelectedEngines = null;
}
// Persist enabled engine names.
config.enabledEngineNames = global.getEnabledEngineNames();
if (config.enabledEngineNames == null) {
Logger.warn(LOG_TAG, "meta/global reported no enabled engine names!");
} else {
if (Logger.shouldLogVerbose(LOG_TAG)) {
Logger.trace(
LOG_TAG,
"Persisting enabled engine names '"
+ Utils.toCommaSeparatedString(config.enabledEngineNames)
+ "' from meta/global.");
}
}
config.persistToPrefs();
advance();
}