public void ChangeTrackerReceivedChange(IDictionary <string, object> change)
{
var lastSequence = change.Get("seq").ToString();
var docID = (string)change.Get("id");
if (docID == null)
{
return;
}
if (!LocalDatabase.IsValidDocumentId(docID))
{
if (!docID.StartsWith("_user/", StringComparison.InvariantCultureIgnoreCase))
{
Log.W(TAG, string.Format("{0}: Received invalid doc ID from _changes: {1} ({2})", this, docID, Manager.GetObjectMapper().WriteValueAsString(change)));
}
return;
}
var deleted = change.GetCast <bool>("deleted");
var changes = change.Get("changes").AsList <object>();
SafeAddToChangesCount(changes.Count);
foreach (var changeObj in changes)
{
var changeDict = changeObj.AsDictionary <string, object>();
var revID = changeDict.GetCast <string>("rev");
if (revID == null)
{
continue;
}
var rev = new PulledRevision(docID, revID, deleted, LocalDatabase);
rev.SetRemoteSequenceID(lastSequence);
if (changes.Count > 1)
{
rev.IsConflicted = true;
}
Log.D(TAG, "Adding rev to inbox " + rev);
AddToInbox(rev);
}
PauseOrResume();
while (_revsToPull != null && _revsToPull.Count > 1000)
{
try {
// Presumably we are letting 1 or more other threads do something while we wait.
Thread.Sleep(500);
}
catch (Exception e) {
Log.W(TAG, "Swalling exception while sleeping after receiving changetracker changes.", e);
// swallow
}
}
}
// Got a _changes feed entry from the ChangeTracker.
public void ChangeTrackerReceivedChange(IDictionary <string, object> change)
{
var lastSequence = change.Get("seq").ToString();
var docID = (string)change.Get("id");
if (docID == null)
{
return;
}
if (!LocalDatabase.IsValidDocumentId(docID))
{
if (!docID.StartsWith("_user/", StringComparison.InvariantCultureIgnoreCase))
{
Log.W(Tag, string.Format("{0}: Received invalid doc ID from _changes: {1} ({2})", this, docID, JsonConvert.SerializeObject(change)));
}
return;
}
var deleted = (change.ContainsKey("deleted") && ((bool)change.Get("deleted")).Equals(true));
var changesContainer = change.Get("changes") as JContainer;
var changes = changesContainer.ToArray();
foreach (var changeObj in changes)
{
var changeDict = changeObj.ToObject <IDictionary <string, object> >();
var revID = (string)changeDict.Get("rev");
if (revID == null)
{
continue;
}
var rev = new PulledRevision(docID, revID, deleted, LocalDatabase);
rev.SetRemoteSequenceID(lastSequence);
Log.D(Tag, "adding rev to inbox " + rev);
Log.V(Tag, "ChangeTrackerReceivedChange() incrementing changesCount by 1");
SafeAddToChangesCount(changes.Length);
AddToInbox(rev);
}
while (revsToPull != null && revsToPull.Count > 1000)
{
try
{
// Presumably we are letting 1 or more other threads do something while we wait.
Thread.Sleep(500);
}
catch (Exception e)
{
Log.W(Tag, "Swalling exception while sleeping after receiving changetracker changes.", e);
// swallow
}
}
}
public void OnCompletion(object result, Exception e)
{
try
{
// OK, now we've got the response revision:
Log.D(Database.Tag, this + ": pullRemoteRevision got response for rev: " + rev);
if (result != null)
{
IDictionary <string, object> properties = (IDictionary <string, object>)result;
IList <string> history = Database.ParseCouchDBRevisionHistory(properties);
if (history != null)
{
PulledRevision gotRev = new PulledRevision(properties, this._enclosing.db);
// Add to batcher ... eventually it will be fed to -insertRevisions:.
IList <object> toInsert = new AList <object>();
toInsert.AddItem(gotRev);
toInsert.AddItem(history);
Log.D(Database.Tag, this + ": pullRemoteRevision add rev: " + rev + " to batcher"
);
this._enclosing.downloadsToInsert.QueueObject(toInsert);
Log.D(Database.Tag, this + "|" + Sharpen.Thread.CurrentThread() + ": pullRemoteRevision.onCompletion() calling asyncTaskStarted()"
);
this._enclosing.AsyncTaskStarted();
}
else
{
Log.W(Database.Tag, this + ": Missing revision history in response from " + pathInside
);
this._enclosing.SetCompletedChangesCount(this._enclosing.GetCompletedChangesCount
() + 1);
}
}
else
{
if (e != null)
{
Log.E(Database.Tag, "Error pulling remote revision", e);
this._enclosing.SetError(e);
}
this._enclosing.RevisionFailed();
this._enclosing.SetCompletedChangesCount(this._enclosing.GetCompletedChangesCount
() + 1);
}
}
finally
{
Log.D(Database.Tag, this + "|" + Sharpen.Thread.CurrentThread() + ": pullRemoteRevision.onCompletion() calling asyncTaskFinished()"
);
this._enclosing.AsyncTaskFinished(1);
}
// Note that we've finished this task; then start another one if there
// are still revisions waiting to be pulled:
--this._enclosing.httpConnectionCount;
this._enclosing.PullRemoteRevisions();
}
protected internal override void ProcessInbox(RevisionList inbox)
{
// Ask the local database which of the revs are not known to it:
//Log.w(Database.TAG, String.format("%s: Looking up %s", this, inbox));
string lastInboxSequence = ((PulledRevision)inbox[inbox.Count - 1]).GetRemoteSequenceID
();
int total = GetChangesCount() - inbox.Count;
if (!db.FindMissingRevisions(inbox))
{
Log.W(Database.Tag, string.Format("%s failed to look up local revs", this));
inbox = null;
}
//introducing this to java version since inbox may now be null everywhere
int inboxCount = 0;
if (inbox != null)
{
inboxCount = inbox.Count;
}
if (GetChangesCount() != total + inboxCount)
{
SetChangesCount(total + inboxCount);
}
if (inboxCount == 0)
{
// Nothing to do. Just bump the lastSequence.
Log.W(Database.Tag, string.Format("%s no new remote revisions to fetch", this));
long seq = pendingSequences.AddValue(lastInboxSequence);
pendingSequences.RemoveSequence(seq);
SetLastSequence(pendingSequences.GetCheckpointedValue());
return;
}
Log.V(Database.Tag, this + " fetching " + inboxCount + " remote revisions...");
//Log.v(Database.TAG, String.format("%s fetching remote revisions %s", this, inbox));
// Dump the revs into the queue of revs to pull from the remote db:
lock (this)
{
if (revsToPull == null)
{
revsToPull = new AList <RevisionInternal>(200);
}
for (int i = 0; i < inbox.Count; i++)
{
PulledRevision rev = (PulledRevision)inbox[i];
// FIXME add logic here to pull initial revs in bulk
rev.SetSequence(pendingSequences.AddValue(rev.GetRemoteSequenceID()));
revsToPull.AddItem(rev);
}
}
PullRemoteRevisions();
}
// Got a _changes feed entry from the ChangeTracker.
public void ChangeTrackerReceivedChange(IDictionary <string, object> change)
{
var lastSequence = change.Get("seq").ToString();
var docID = (string)change.Get("id");
if (docID == null)
{
return;
}
if (!LocalDatabase.IsValidDocumentId(docID))
{
Log.W(Tag, string.Format("{0}: Received invalid doc ID from _changes: {1}", this, change));
return;
}
var deleted = (change.ContainsKey("deleted") && ((bool)change.Get("deleted")).Equals(true));
var changesContainer = change.Get("changes") as JContainer;
var changes = changesContainer.ToArray();
foreach (var changeObj in changes)
{
var changeDict = changeObj.ToObject <IDictionary <string, object> >();
var revID = (string)changeDict.Get("rev");
if (revID == null)
{
continue;
}
var rev = new PulledRevision(docID, revID, deleted, LocalDatabase);
rev.SetRemoteSequenceID(lastSequence);
Log.D(Tag, this + ": adding rev to inbox " + rev);
AddToInbox(rev);
}
ChangesCount = ChangesCount + changes.Length;
while (revsToPull != null && revsToPull.Count > 1000)
{
try
{
Sharpen.Thread.Sleep(500);
}
catch (Exception)
{
// swallow
}
}
}
public void ChangeTrackerReceivedChange(IDictionary <string, object> change)
{
string lastSequence = change.Get("seq").ToString();
string docID = (string)change.Get("id");
if (docID == null)
{
return;
}
if (!Database.IsValidDocumentId(docID))
{
Log.W(Log.TagSync, "%s: Received invalid doc ID from _changes: %s", this, change);
return;
}
bool deleted = (change.ContainsKey("deleted") && ((bool)change.Get("deleted")).Equals
(true));
IList <IDictionary <string, object> > changes = (IList <IDictionary <string, object> >)
change.Get("changes");
foreach (IDictionary <string, object> changeDict in changes)
{
string revID = (string)changeDict.Get("rev");
if (revID == null)
{
continue;
}
PulledRevision rev = new PulledRevision(docID, revID, deleted, db);
rev.SetRemoteSequenceID(lastSequence);
Log.D(Log.TagSync, "%s: adding rev to inbox %s", this, rev);
Log.V(Log.TagSync, "%s: changeTrackerReceivedChange() incrementing changesCount by 1"
, this);
// this is purposefully done slightly different than the ios version
AddToChangesCount(1);
AddToInbox(rev);
}
while (revsToPull != null && revsToPull.Count > 1000)
{
try
{
Sharpen.Thread.Sleep(500);
}
catch (Exception)
{
}
}
}
public void ChangeTrackerReceivedChange(IDictionary <string, object> change)
{
string lastSequence = change.Get("seq").ToString();
string docID = (string)change.Get("id");
if (docID == null)
{
return;
}
if (!Database.IsValidDocumentId(docID))
{
Log.W(Database.Tag, string.Format("%s: Received invalid doc ID from _changes: %s"
, this, change));
return;
}
bool deleted = (change.ContainsKey("deleted") && ((bool)change.Get("deleted")).Equals
(true));
IList <IDictionary <string, object> > changes = (IList <IDictionary <string, object> >)
change.Get("changes");
foreach (IDictionary <string, object> changeDict in changes)
{
string revID = (string)changeDict.Get("rev");
if (revID == null)
{
continue;
}
PulledRevision rev = new PulledRevision(docID, revID, deleted, db);
rev.SetRemoteSequenceID(lastSequence);
Log.D(Database.Tag, this + ": adding rev to inbox " + rev);
AddToInbox(rev);
}
SetChangesCount(GetChangesCount() + changes.Count);
while (revsToPull != null && revsToPull.Count > 1000)
{
try
{
Sharpen.Thread.Sleep(500);
}
catch (Exception)
{
}
}
}
public void OnCompletion(object result, Exception e)
{
try
{
if (e != null)
{
Log.E(Log.TagSync, "Error pulling remote revision", e);
this._enclosing.SetError(e);
this._enclosing.RevisionFailed();
Log.D(Log.TagSync, "%s: pullRemoteRevision() updating completedChangesCount from %d -> due to error pulling remote revision"
, this, this._enclosing.GetCompletedChangesCount(), this._enclosing.GetCompletedChangesCount
() + 1);
this._enclosing.AddToCompletedChangesCount(1);
}
else
{
IDictionary <string, object> properties = (IDictionary <string, object>)result;
PulledRevision gotRev = new PulledRevision(properties, this._enclosing.db);
gotRev.SetSequence(rev.GetSequence());
// Add to batcher ... eventually it will be fed to -insertDownloads:.
Log.V(Log.TagSync, "%s | %s: pullRemoteRevision.sendAsyncMultipartDownloaderRequest() calling asyncTaskStarted()"
, this, Sharpen.Thread.CurrentThread());
this._enclosing.AsyncTaskStarted();
// TODO: [gotRev.body compact];
Log.D(Log.TagSync, "%s: pullRemoteRevision add rev: %s to batcher", this, gotRev);
this._enclosing.downloadsToInsert.QueueObject(gotRev);
}
}
finally
{
Log.V(Log.TagSync, "%s | %s: pullRemoteRevision.sendAsyncMultipartDownloaderRequest() calling asyncTaskFinished()"
, this, Sharpen.Thread.CurrentThread());
this._enclosing.AsyncTaskFinished(1);
}
// Note that we've finished this task; then start another one if there
// are still revisions waiting to be pulled:
--this._enclosing.httpConnectionCount;
this._enclosing.PullRemoteRevisions();
}
/// <summary>Fetches the contents of a revision from the remote db, including its parent revision ID.
/// </summary>
/// <remarks>
/// Fetches the contents of a revision from the remote db, including its parent revision ID.
/// The contents are stored into rev.properties.
/// </remarks>
private void PullRemoteRevision(RevisionInternal rev)
{
// Construct a query. We want the revision history, and the bodies of attachments that have
// been added since the latest revisions we have locally.
// See: http://wiki.apache.org/couchdb/HTTP_Document_API#Getting_Attachments_With_a_Document
var path = new StringBuilder($"/{Uri.EscapeUriString(rev.DocID)}?rev={Uri.EscapeUriString(rev.RevID.ToString())}&revs=true");
var attachments = true;
if (attachments)
{
// TODO: deferred attachments
path.Append("&attachments=true");
}
// Include atts_since with a list of possible ancestor revisions of rev. If getting attachments,
// this allows the server to skip the bodies of attachments that have not changed since the
// local ancestor. The server can also trim the revision history it returns, to not extend past
// the local ancestor (not implemented yet in SG but will be soon.)
var knownRevs = default(IList <RevisionID>);
ValueTypePtr <bool> haveBodies = false;
try {
knownRevs = LocalDatabase.Storage.GetPossibleAncestors(rev, MaxAttsSince, haveBodies)?.ToList();
} catch (Exception e) {
Log.To.Sync.W(TAG, "Error getting possible ancestors (probably database closed)", e);
}
if (knownRevs != null)
{
path.Append(haveBodies ? "&atts_since=" : "&revs_from=");
path.Append(JoinQuotedEscaped(knownRevs.Select(x => x.ToString()).ToList()));
}
else
{
// If we don't have any revisions at all, at least tell the server how long a history we
// can keep track of:
var maxRevTreeDepth = LocalDatabase.GetMaxRevTreeDepth();
if (rev.Generation > maxRevTreeDepth)
{
path.AppendFormat("&revs_limit={0}", maxRevTreeDepth);
}
}
var pathInside = path.ToString();
Log.To.SyncPerf.I(TAG, "{0} getting {1}", this, rev);
Log.To.Sync.V(TAG, "{0} GET {1}", this, new SecureLogString(pathInside, LogMessageSensitivity.PotentiallyInsecure));
_remoteSession.SendAsyncMultipartDownloaderRequest(HttpMethod.Get, pathInside, null, LocalDatabase, (result, e) =>
{
// OK, now we've got the response revision:
Log.To.SyncPerf.I(TAG, "{0} got {1}", this, rev);
if (e != null)
{
Log.To.Sync.I(TAG, String.Format("{0} error pulling remote revision", this), e);
LastError = e;
RevisionFailed();
SafeIncrementCompletedChangesCount();
if (IsDocumentError(e))
{
// Make sure this document is skipped because it is not available
// even though the server is functioning
_pendingSequences.RemoveSequence(rev.Sequence);
LastSequence = _pendingSequences.GetCheckpointedValue();
}
}
else
{
var properties = result.AsDictionary <string, object>();
var gotRev = new PulledRevision(properties);
gotRev.Sequence = rev.Sequence;
if (_downloadsToInsert != null)
{
if (!_downloadsToInsert.QueueObject(gotRev))
{
Log.To.Sync.W(TAG, "{0} failed to queue {1} for download because it is already queued, marking completed...", this, rev);
SafeIncrementCompletedChangesCount();
}
}
else
{
Log.To.Sync.E(TAG, "downloadsToInsert is null");
}
}
// Note that we've finished this task; then start another one if there
// are still revisions waiting to be pulled:
PullRemoteRevisions();
});
}
public void ChangeTrackerReceivedChange(IDictionary <string, object> change)
{
if (ServerType == null)
{
ServerType = _remoteSession.ServerType;
}
var lastSequence = change.Get("seq").ToString();
var docID = (string)change.Get("id");
if (docID == null)
{
Log.To.Sync.W(TAG, "{0} Change received with no id, ignoring...", this);
return;
}
var removed = change.Get("removed") != null;
if (removed)
{
Log.To.Sync.V(TAG, "Removed entry received, body may not be available");
}
if (!Document.IsValidDocumentId(docID))
{
if (!docID.StartsWith("_user/", StringComparison.InvariantCultureIgnoreCase))
{
Log.To.Sync.W(TAG, "{0}: Received invalid doc ID from _changes: {1} ({2})",
this, new SecureLogString(docID, LogMessageSensitivity.PotentiallyInsecure), new LogJsonString(change));
}
return;
}
var deleted = change.GetCast <bool>("deleted");
var changes = change.Get("changes").AsList <object>();
SafeAddToChangesCount(changes.Count);
foreach (var changeObj in changes)
{
var changeDict = changeObj.AsDictionary <string, object>();
var revID = changeDict.GetCast <string>("rev").AsRevID();
if (revID == null)
{
Log.To.Sync.W(TAG, "{0} missing revID for entry, skipping...");
SafeIncrementCompletedChangesCount();
continue;
}
var rev = new PulledRevision(docID, revID, deleted, LocalDatabase);
rev.SetRemoteSequenceID(lastSequence);
if (changes.Count > 1)
{
rev.IsConflicted = true;
}
Log.To.Sync.D(TAG, "Adding rev to inbox " + rev);
if (!AddToInbox(rev))
{
Log.To.Sync.W(TAG, "{0} Failed to add {1} to inbox, probably already added. Marking completed", this, rev);
SafeIncrementCompletedChangesCount();
}
}
PauseOrResume();
while (_revsToPull != null && _revsToPull.Count > 1000)
{
try {
// Presumably we are letting 1 or more other threads do something while we wait.
Thread.Sleep(500);
}
catch (Exception e) {
Log.To.Sync.W(TAG, "Swallowing exception while sleeping after receiving changetracker changes.", e);
// swallow
}
}
}
/// <summary>Fetches the contents of a revision from the remote db, including its parent revision ID.
/// </summary>
/// <remarks>
/// Fetches the contents of a revision from the remote db, including its parent revision ID.
/// The contents are stored into rev.properties.
/// </remarks>
internal void PullRemoteRevision(RevisionInternal rev)
{
Log.D(Tag, "PullRemoteRevision with rev: {0}", rev);
Log.D(Tag, "PullRemoteRevision() calling AsyncTaskStarted()");
AsyncTaskStarted();
httpConnectionCount++;
// Construct a query. We want the revision history, and the bodies of attachments that have
// been added since the latest revisions we have locally.
// See: http://wiki.apache.org/couchdb/HTTP_Document_API#Getting_Attachments_With_a_Document
var path = new StringBuilder("/" + Uri.EscapeUriString(rev.GetDocId()) + "?rev=" + Uri.EscapeUriString(rev.GetRevId()) + "&revs=true&attachments=true");
var knownRevs = KnownCurrentRevIDs(rev);
if (knownRevs == null)
{
//this means something is wrong, possibly the replicator has shut down
Log.D(Tag, "PullRemoteRevision() calling AsyncTaskFinished()");
AsyncTaskFinished(1);
httpConnectionCount--;
return;
}
if (knownRevs.Count > 0)
{
path.Append("&atts_since=");
path.Append(JoinQuotedEscaped(knownRevs));
}
//create a final version of this variable for the log statement inside
//FIXME find a way to avoid this
var pathInside = path.ToString();
SendAsyncMultipartDownloaderRequest(HttpMethod.Get, pathInside, null, LocalDatabase, (result, e) =>
{
try
{
// OK, now we've got the response revision:
Log.D(Tag, "PullRemoteRevision got response for rev: " + rev);
if (e != null)
{
Log.E(Tag, "Error pulling remote revision", e);
SetLastError(e);
RevisionFailed();
Log.D(Tag, "PullRemoteRevision updating completedChangesCount from " +
CompletedChangesCount + " -> " + (CompletedChangesCount + 1)
+ " due to error pulling remote revision");
SafeIncrementCompletedChangesCount();
}
else
{
var properties = result.AsDictionary <string, object>();
var gotRev = new PulledRevision(properties);
gotRev.SetSequence(rev.GetSequence());
AsyncTaskStarted();
Log.D(Tag, "PullRemoteRevision add rev: " + gotRev + " to batcher");
if (downloadsToInsert != null)
{
downloadsToInsert.QueueObject(gotRev);
}
else
{
Log.E(Tag, "downloadsToInsert is null");
}
}
}
finally
{
Log.D(Tag, "PullRemoteRevision.onCompletion() calling AsyncTaskFinished()");
AsyncTaskFinished(1);
}
// Note that we've finished this task; then start another one if there
// are still revisions waiting to be pulled:
--httpConnectionCount;
PullRemoteRevisions();
});
}
/// <summary>Fetches the contents of a revision from the remote db, including its parent revision ID.
/// </summary>
/// <remarks>
/// Fetches the contents of a revision from the remote db, including its parent revision ID.
/// The contents are stored into rev.properties.
/// </remarks>
private void PullRemoteRevision(RevisionInternal rev)
{
// Construct a query. We want the revision history, and the bodies of attachments that have
// been added since the latest revisions we have locally.
// See: http://wiki.apache.org/couchdb/HTTP_Document_API#Getting_Attachments_With_a_Document
var path = new StringBuilder("/" + Uri.EscapeUriString(rev.DocID) + "?rev=" + Uri.EscapeUriString(rev.RevID) + "&revs=true&attachments=true");
var knownRevs = default(IList <string>);
try {
var tmp = LocalDatabase.Storage.GetPossibleAncestors(rev, MAX_ATTS_SINCE, true);
knownRevs = tmp == null ? null : tmp.ToList();
} catch (Exception e) {
Log.To.Sync.W(TAG, "Error getting possible ancestors (probably database closed)", e);
}
if (knownRevs == null)
{
//this means something is wrong, possibly the replicator has shut down
return;
}
if (knownRevs.Count > 0)
{
path.Append("&atts_since=");
path.Append(JoinQuotedEscaped(knownRevs));
}
var pathInside = path.ToString();
Log.To.SyncPerf.I(TAG, "{0} getting {1}", this, rev);
Log.To.Sync.V(TAG, "{0} GET {1}", this, new SecureLogString(pathInside, LogMessageSensitivity.PotentiallyInsecure));
SendAsyncMultipartDownloaderRequest(HttpMethod.Get, pathInside, null, LocalDatabase, (result, e) =>
{
// OK, now we've got the response revision:
Log.To.SyncPerf.I(TAG, "{0} got {1}", this, rev);
if (e != null)
{
Log.To.Sync.I(TAG, String.Format("{0} error pulling remote revision", this), e);
LastError = e;
RevisionFailed();
SafeIncrementCompletedChangesCount();
if (IsDocumentError(e))
{
// Make sure this document is skipped because it is not available
// even though the server is functioning
_pendingSequences.RemoveSequence(rev.Sequence);
LastSequence = _pendingSequences.GetCheckpointedValue();
}
}
else
{
var properties = result.AsDictionary <string, object>();
var gotRev = new PulledRevision(properties);
gotRev.Sequence = rev.Sequence;
if (_downloadsToInsert != null)
{
_downloadsToInsert.QueueObject(gotRev);
}
else
{
Log.To.Sync.E(TAG, "downloadsToInsert is null");
}
}
// Note that we've finished this task; then start another one if there
// are still revisions waiting to be pulled:
PullRemoteRevisions();
});
}
public void InsertRevisions(IList <IList <object> > revs)
{
Log.I(Database.Tag, this + " inserting " + revs.Count + " revisions...");
//Log.v(Database.TAG, String.format("%s inserting %s", this, revs));
revs.Sort(new _IComparer_402());
if (db == null)
{
Log.D(Database.Tag, this + "|" + Sharpen.Thread.CurrentThread() + ": insertRevisions() calling asyncTaskFinished() since db == null"
);
AsyncTaskFinished(revs.Count);
return;
}
db.BeginTransaction();
bool success = false;
try
{
foreach (IList <object> revAndHistory in revs)
{
PulledRevision rev = (PulledRevision)revAndHistory[0];
long fakeSequence = rev.GetSequence();
IList <string> history = (IList <string>)revAndHistory[1];
// Insert the revision:
try
{
Log.I(Database.Tag, this + ": db.forceInsert " + rev);
db.ForceInsert(rev, history, remote);
Log.I(Database.Tag, this + ": db.forceInsert succeeded " + rev);
}
catch (CouchbaseLiteException e)
{
if (e.GetCBLStatus().GetCode() == Status.Forbidden)
{
Log.I(Database.Tag, this + ": Remote rev failed validation: " + rev);
}
else
{
Log.W(Database.Tag, this + " failed to write " + rev + ": status=" + e.GetCBLStatus
().GetCode());
RevisionFailed();
SetError(new HttpResponseException(e.GetCBLStatus().GetCode(), null));
continue;
}
}
pendingSequences.RemoveSequence(fakeSequence);
}
Log.W(Database.Tag, this + " finished inserting " + revs.Count + " revisions");
SetLastSequence(pendingSequences.GetCheckpointedValue());
success = true;
}
catch (SQLException e)
{
Log.E(Database.Tag, this + ": Exception inserting revisions", e);
}
finally
{
db.EndTransaction(success);
Log.D(Database.Tag, this + "|" + Sharpen.Thread.CurrentThread() + ": insertRevisions() calling asyncTaskFinished()"
);
AsyncTaskFinished(revs.Count);
}
SetCompletedChangesCount(GetCompletedChangesCount() + revs.Count);
}
protected internal override void ProcessInbox(RevisionList inbox)
{
if (canBulkGet == null)
{
canBulkGet = ServerIsSyncGatewayVersion("0.81");
}
// Ask the local database which of the revs are not known to it:
string lastInboxSequence = ((PulledRevision)inbox[inbox.Count - 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.TagSync, 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.Count;
}
if (numRevisionsRemoved > 0)
{
Log.V(Log.TagSync, "%s: processInbox() setting changesCount to: %s", this, GetChangesCount
() - 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.TagSync, "%s no new remote revisions to fetch", this);
long seq = pendingSequences.AddValue(lastInboxSequence);
pendingSequences.RemoveSequence(seq);
SetLastSequence(pendingSequences.GetCheckpointedValue());
return;
}
Log.V(Log.TagSync, "%s: fetching %s remote revisions...", this, inboxCount);
// Dump the revs into the queue of revs to pull from the remote db:
lock (this)
{
int numBulked = 0;
for (int i = 0; i < inbox.Count; i++)
{
PulledRevision rev = (PulledRevision)inbox[i];
//TODO: add support for rev isConflicted
if (canBulkGet || (rev.GetGeneration() == 1 && !rev.IsDeleted()))
{
// &&!rev.isConflicted)
//optimistically pull 1st-gen revs in bulk
if (bulkRevsToPull == null)
{
bulkRevsToPull = new AList <RevisionInternal>(100);
}
bulkRevsToPull.AddItem(rev);
++numBulked;
}
else
{
QueueRemoteRevision(rev);
}
rev.SetSequence(pendingSequences.AddValue(rev.GetRemoteSequenceID()));
}
}
PullRemoteRevisions();
}
/// <summary>Fetches the contents of a revision from the remote db, including its parent revision ID.
/// </summary>
/// <remarks>
/// Fetches the contents of a revision from the remote db, including its parent revision ID.
/// The contents are stored into rev.properties.
/// </remarks>
private void PullRemoteRevision(RevisionInternal rev)
{
Log.D(TAG, "PullRemoteRevision with rev: {0}", rev);
_httpConnectionCount++;
// Construct a query. We want the revision history, and the bodies of attachments that have
// been added since the latest revisions we have locally.
// See: http://wiki.apache.org/couchdb/HTTP_Document_API#Getting_Attachments_With_a_Document
var path = new StringBuilder("/" + Uri.EscapeUriString(rev.GetDocId()) + "?rev=" + Uri.EscapeUriString(rev.GetRevId()) + "&revs=true&attachments=true");
var knownRevs = default(IList <string>);
try {
var tmp = LocalDatabase.Storage.GetPossibleAncestors(rev, MAX_ATTS_SINCE, true);
knownRevs = tmp == null ? null : tmp.ToList();
} catch (Exception) {
Log.W(TAG, "Error getting possible ancestors (probably database closed)");
}
if (knownRevs == null)
{
//this means something is wrong, possibly the replicator has shut down
_httpConnectionCount--;
return;
}
if (knownRevs.Count > 0)
{
path.Append("&atts_since=");
path.Append(JoinQuotedEscaped(knownRevs));
}
//create a final version of this variable for the log statement inside
//FIXME find a way to avoid this
var pathInside = path.ToString();
SendAsyncMultipartDownloaderRequest(HttpMethod.Get, pathInside, null, LocalDatabase, (result, e) =>
{
// OK, now we've got the response revision:
Log.D(TAG, "PullRemoteRevision got response for rev: " + rev);
if (e != null)
{
Log.E(TAG, "Error pulling remote revision", e);
LastError = e;
RevisionFailed();
Log.D(TAG, "PullRemoteRevision updating completedChangesCount from " +
CompletedChangesCount + " -> " + (CompletedChangesCount + 1)
+ " due to error pulling remote revision");
SafeIncrementCompletedChangesCount();
if (IsDocumentError(e as HttpResponseException))
{
// Make sure this document is skipped because it is not available
// even though the server is functioning
_pendingSequences.RemoveSequence(rev.GetSequence());
LastSequence = _pendingSequences.GetCheckpointedValue();
}
}
else
{
var properties = result.AsDictionary <string, object>();
var gotRev = new PulledRevision(properties);
gotRev.SetSequence(rev.GetSequence());
Log.D(TAG, "PullRemoteRevision add rev: " + gotRev + " to batcher");
if (_downloadsToInsert != null)
{
_downloadsToInsert.QueueObject(gotRev);
}
else
{
Log.E(TAG, "downloadsToInsert is null");
}
}
// Note that we've finished this task; then start another one if there
// are still revisions waiting to be pulled:
--_httpConnectionCount;
PullRemoteRevisions();
});
}