/**
* in CBL_Puller.m - (void) changeTrackerReceivedSequence: (id)remoteSequenceID docID:
* (NSString*)docID revIDs: (NSArray*)revIDs deleted: (BOOL)deleted
*/
protected void processChangeTrackerChange(final Map<String, Object> change) {
String lastSequence = change.get("seq").toString();
String docID = (String) change.get("id");
if (docID == null) {
return;
}
if (!Document.isValidDocumentId(docID)) {
Log.w(Log.TAG_SYNC, "%s: Received invalid doc ID from _changes: %s", this, change);
return;
}
boolean deleted =
(change.containsKey("deleted") && ((Boolean) change.get("deleted")).equals(Boolean.TRUE));
List<Map<String, Object>> changes = (List<Map<String, Object>>) change.get("changes");
for (Map<String, Object> changeDict : changes) {
String revID = (String) changeDict.get("rev");
if (revID == null) {
continue;
}
PulledRevision rev = new PulledRevision(docID, revID, deleted);
// Remember its remote sequence ID (opaque), and make up a numeric sequence
// based on the order in which it appeared in the _changes feed:
rev.setRemoteSequenceID(lastSequence);
if (changes.size() > 1) rev.setConflicted(true);
Log.d(Log.TAG_SYNC, "%s: adding rev to inbox %s", this, rev);
Log.v(Log.TAG_SYNC, "%s: changeTrackerReceivedChange() incrementing changesCount by 1", this);
// this is purposefully done slightly different than the ios version
addToChangesCount(1);
addToInbox(rev);
}
pauseOrResume();
}
/** Process a bunch of remote revisions from the _changes feed at once */
@Override
@InterfaceAudience.Private
protected void processInbox(RevisionList inbox) {
Log.d(Log.TAG_SYNC, "processInbox called");
if (canBulkGet == null) {
canBulkGet = serverIsSyncGatewayVersion("0.81");
}
// Ask the local database which of the revs are not known to it:
String lastInboxSequence = ((PulledRevision) inbox.get(inbox.size() - 1)).getRemoteSequenceID();
int numRevisionsRemoved = 0;
try {
// findMissingRevisions is the local equivalent of _revs_diff. it looks at the
// array of revisions in "inbox" and removes the ones that already exist.
// So whatever's left in 'inbox'
// afterwards are the revisions that need to be downloaded.
numRevisionsRemoved = db.findMissingRevisions(inbox);
} catch (SQLException e) {
Log.e(Log.TAG_SYNC, String.format("%s failed to look up local revs", this), e);
inbox = null;
}
// introducing this to java version since inbox may now be null everywhere
int inboxCount = 0;
if (inbox != null) {
inboxCount = inbox.size();
}
if (numRevisionsRemoved > 0) {
Log.v(
Log.TAG_SYNC,
"%s: processInbox() setting changesCount to: %s",
this,
getChangesCount().get() - numRevisionsRemoved);
// May decrease the changesCount, to account for the revisions we just found out we don't need
// to get.
addToChangesCount(-1 * numRevisionsRemoved);
}
if (inboxCount == 0) {
// Nothing to do. Just bump the lastSequence.
Log.w(
Log.TAG_SYNC,
"%s no new remote revisions to fetch. add lastInboxSequence (%s) to pendingSequences (%s)",
this,
lastInboxSequence,
pendingSequences);
long seq = pendingSequences.addValue(lastInboxSequence);
pendingSequences.removeSequence(seq);
setLastSequence(pendingSequences.getCheckpointedValue());
pauseOrResume();
return;
}
Log.v(Log.TAG_SYNC, "%s: fetching %s remote revisions...", this, inboxCount);
// Dump the revs into the queue of revs to pull from the remote db:
for (int i = 0; i < inbox.size(); i++) {
PulledRevision rev = (PulledRevision) inbox.get(i);
if (canBulkGet || (rev.getGeneration() == 1 && !rev.isDeleted() && !rev.isConflicted())) {
bulkRevsToPull.add(rev);
} else {
queueRemoteRevision(rev);
}
rev.setSequence(pendingSequences.addValue(rev.getRemoteSequenceID()));
}
pullRemoteRevisions();
pauseOrResume();
}
