/// <summary>
/// Similar to the LINQ method, but returns all objects converted to standard
/// .NET types
/// </summary>
/// <returns>A list of standard .NET typed objects in the array</returns>
public List <object> ToList()
{
var count = _array.Count;
var result = new List <object>(count);
_threadSafety.DoLocked(() =>
{
for (var i = 0; i < count; i++)
{
result.Add(DataOps.ToNetObject(GetObject(_array, i)));
}
});
return(result);
}
public IList <string> GetIndexes()
{
object retVal = null;
ThreadSafety.DoLocked(() =>
{
CheckOpen();
var result = new C4SliceResult();
LiteCoreBridge.Check(err =>
{
result = NativeRaw.c4db_getIndexes(c4db, err);
return(result.buf != null);
});
var val = NativeRaw.FLValue_FromTrustedData(new FLSlice(result.buf, result.size));
if (val == null)
{
Native.c4slice_free(result);
throw new LiteCoreException(new C4Error(C4ErrorCode.CorruptIndexData));
}
retVal = FLValueConverter.ToCouchbaseObject(val, this, true, typeof(string));
Native.c4slice_free(result);
});
return(retVal as IList <string> ?? new List <string>());
}
public void InBatch(Action action)
{
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(action), action);
ThreadSafety.DoLocked(() =>
{
CheckOpen();
PerfTimer.StartEvent("InBatch_BeginTransaction");
LiteCoreBridge.Check(err => Native.c4db_beginTransaction(_c4db, err));
PerfTimer.StopEvent("InBatch_BeginTransaction");
var success = true;
try {
action();
} catch (Exception e) {
Log.To.Database.W(Tag, "Exception during InBatch, rolling back...", e);
success = false;
throw;
} finally {
PerfTimer.StartEvent("InBatch_EndTransaction");
LiteCoreBridge.Check(err => Native.c4db_endTransaction(_c4db, success, err));
PerfTimer.StopEvent("InBatch_EndTransaction");
}
});
PostDatabaseChanged();
}
public void Purge(Document document)
{
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(document), document);
ThreadSafety.DoLocked(() =>
{
CheckOpen();
VerifyDB(document);
if (!document.Exists)
{
var docID = new SecureLogString(document.Id, LogMessageSensitivity.PotentiallyInsecure);
Log.To.Database.V(Tag, $"Ignoring purge of non-existent document {docID}");
return;
}
InBatch(() =>
{
var result = Native.c4doc_purgeRevision(document.c4Doc.RawDoc, null, null);
if (result >= 0)
{
LiteCoreBridge.Check(err => Native.c4doc_save(document.c4Doc.RawDoc, 0, err));
}
});
});
}
/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
public void Dispose()
{
GC.SuppressFinalize(this);
ThreadSafety.DoLocked(() =>
{
ThrowIfActiveItems();
Dispose(true);
});
}
/// <summary>
/// Creates a database given a name and some configuration
/// </summary>
/// <param name="name">The name of the database</param>
/// <param name="configuration">The configuration to open it with</param>
public Database(string name, DatabaseConfiguration configuration = null)
{
Name = CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(name), name);
Config = configuration?.Freeze() ?? new DatabaseConfiguration(true);
Open();
FLSharedKeys *keys = null;
ThreadSafety.DoLocked(() => keys = Native.c4db_getFLSharedKeys(_c4db));
_sharedStrings = new SharedStringCache(keys);
}
public void Delete(Document document)
{
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(document), document);
ThreadSafety.DoLocked(() =>
{
CheckOpen();
Save(document, true);
});
}
public Document Save(MutableDocument document)
{
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(document), document);
return(ThreadSafety.DoLocked(() =>
{
CheckOpen();
return Save(document, false);
}));
}
/// <summary>
/// Deletes the database
/// </summary>
public void Delete()
{
ThreadSafety.DoLocked(() =>
{
CheckOpen();
ThrowIfActiveItems();
LiteCoreBridge.Check(err => Native.c4db_delete(_c4db, err));
Native.c4db_free(_c4db);
_c4db = null;
_obs?.Dispose();
_obs = null;
});
}
public ListenerToken AddChangeListener([CanBeNull] TaskScheduler scheduler,
EventHandler <DatabaseChangedEventArgs> handler)
{
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(handler), handler);
return(ThreadSafety.DoLocked(() =>
{
CheckOpen();
var cbHandler = new CouchbaseEventHandler <DatabaseChangedEventArgs>(handler, scheduler);
_databaseChanged.Add(cbHandler);
return new ListenerToken(cbHandler, "db");
}));
}
/// <summary>
/// Removes a database changed listener by token
/// </summary>
/// <param name="token">The token received from <see cref="AddChangeListener(TaskScheduler, EventHandler{DatabaseChangedEventArgs})"/>
/// and family</param>
public void RemoveChangeListener(ListenerToken token)
{
ThreadSafety.DoLocked(() =>
{
CheckOpen();
if (token.Type == "db")
{
_databaseChanged.Remove(token);
}
else
{
_documentChanged.Remove(token);
}
});
}
private void PostDocChanged([NotNull] string documentID)
{
DocumentChangedEventArgs change = null;
ThreadSafety.DoLocked(() =>
{
if (!_docObs.ContainsKey(documentID) || _c4db == null || Native.c4db_isInTransaction(_c4db))
{
return;
}
change = new DocumentChangedEventArgs(documentID, this);
});
_documentChanged.Fire(documentID, this, change);
}
private void Open()
{
if (_c4db != null)
{
return;
}
Directory.CreateDirectory(Config.Directory);
var path = DatabasePath(Name, Config.Directory);
var config = DBConfig;
var encrypted = "";
#if COUCHBASE_ENTERPRISE
if (Config.EncryptionKey != null)
{
var key = Config.EncryptionKey;
var i = 0;
config.encryptionKey.algorithm = C4EncryptionAlgorithm.AES256;
foreach (var b in key.KeyData)
{
config.encryptionKey.bytes[i++] = b;
}
encrypted = "encrypted ";
}
#endif
Log.To.Database.I(Tag, $"Opening {encrypted}database at {path}");
var localConfig1 = config;
ThreadSafety.DoLocked(() =>
{
_c4db = (C4Database *)NativeHandler.Create()
.AllowError((int)C4ErrorCode.NotADatabaseFile, C4ErrorDomain.LiteCoreDomain).Execute(err =>
{
var localConfig2 = localConfig1;
return(Native.c4db_open(path, &localConfig2, err));
});
if (_c4db == null)
{
throw new CouchbaseLiteException(StatusCode.Unauthorized);
}
_obs = Native.c4dbobs_create(_c4db, _DbObserverCallback, this);
});
}
private void PostDatabaseChanged()
{
var allChanges = new List <DatabaseChangedEventArgs>();
ThreadSafety.DoLocked(() =>
{
if (_obs == null || _c4db == null || InTransaction)
{
return;
}
const uint maxChanges = 100u;
var external = false;
uint nChanges;
var changes = new C4DatabaseChange[maxChanges];
var docIDs = new List <string>();
do
{
// Read changes in batches of MaxChanges:
bool newExternal;
nChanges = Native.c4dbobs_getChanges(_obs.Observer, changes, maxChanges, &newExternal);
if (nChanges == 0 || external != newExternal || docIDs.Count > 1000)
{
if (docIDs.Count > 0)
{
// Only notify if there are actually changes to send
var args = new DatabaseChangedEventArgs(this, docIDs);
allChanges.Add(args);
docIDs = new List <string>();
}
}
external = newExternal;
for (var i = 0; i < nChanges; i++)
{
docIDs.Add(changes[i].docID.CreateString());
}
} while (nChanges > 0);
});
foreach (var args in allChanges)
{
_databaseChanged.Fire(this, args);
}
}
public void Save(Couchbase.Lite.Linq.IDocumentModel model)
{
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(model), model);
ThreadSafety.DoLocked(() =>
{
CheckOpen();
MutableDocument md = (model.Document as MutableDocument) ?? model.Document?.ToMutable() ?? new MutableDocument();
md.SetFromModel(model);
try {
var retVal = Save(md, false);
model.Document = retVal;
} finally {
md.Dispose();
}
});
}
public IImmutableSet <string> GetPendingDocumentIDs()
{
var result = new HashSet <string>();
if (!IsPushing())
{
CBDebug.LogAndThrow(WriteLog.To.Sync,
new CouchbaseLiteException(C4ErrorCode.Unsupported, CouchbaseLiteErrorMessage.PullOnlyPendingDocIDs),
Tag, CouchbaseLiteErrorMessage.PullOnlyPendingDocIDs, true);
}
DispatchQueue.DispatchSync(() => {
var errSetupRepl = SetupC4Replicator();
if (errSetupRepl.code > 0)
{
CBDebug.LogAndThrow(WriteLog.To.Sync, CouchbaseException.Create(errSetupRepl), Tag, errSetupRepl.ToString(), true);
}
});
byte[] pendingDocIds = LiteCoreBridge.Check(err =>
{
return(Native.c4repl_getPendingDocIDs(_repl, err));
});
if (pendingDocIds != null)
{
_databaseThreadSafety.DoLocked(() => {
var flval = Native.FLValue_FromData(pendingDocIds, FLTrust.Trusted);
var flarr = Native.FLValue_AsArray(flval);
var cnt = (int)Native.FLArray_Count(flarr);
for (int i = 0; i < cnt; i++)
{
var flv = Native.FLArray_Get(flarr, (uint)i);
result.Add(Native.FLValue_AsString(flv));
}
Array.Clear(pendingDocIds, 0, pendingDocIds.Length);
pendingDocIds = null;
});
}
_pendingDocIds = result.ToImmutableHashSet <string>();
return(_pendingDocIds);
}
public ListenerToken AddDocumentChangeListener(string id, [CanBeNull] TaskScheduler scheduler,
EventHandler <DocumentChangedEventArgs> handler)
{
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(id), id);
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(handler), handler);
return(ThreadSafety.DoLocked(() =>
{
CheckOpen();
var cbHandler =
new CouchbaseEventHandler <string, DocumentChangedEventArgs>(handler, id, scheduler);
var count = _documentChanged.Add(cbHandler);
if (count == 0)
{
var docObs = new DocumentObserver(_c4db, id, _DocObserverCallback, this);
_docObs[id] = docObs;
}
return new ListenerToken(cbHandler, "doc");
}));
}
public void CreateIndex(string name, IIndex index)
{
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(name), name);
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(index), index);
ThreadSafety.DoLocked(() =>
{
CheckOpen();
var concreteIndex = Misc.TryCast <IIndex, QueryIndex>(index);
var jsonObj = concreteIndex.ToJSON();
var json = JsonConvert.SerializeObject(jsonObj);
LiteCoreBridge.Check(err =>
{
var internalOpts = concreteIndex.Options;
// For some reason a "using" statement here causes a compiler error
try {
return(Native.c4db_createIndex(c4db, name, json, concreteIndex.IndexType, &internalOpts, err));
} finally {
internalOpts.Dispose();
}
});
});
}
// Must be called from within the ThreadSafety
private void StartInternal()
{
_desc = ToString(); // Cache this; it may be called a lot when logging
// Target:
var addr = new C4Address();
var scheme = new C4String();
var host = new C4String();
var path = new C4String();
Database otherDB = null;
var remoteUrl = Config.RemoteUrl;
string dbNameStr = null;
if (remoteUrl != null)
{
var pathStr = String.Concat(remoteUrl.Segments.Take(remoteUrl.Segments.Length - 1));
dbNameStr = remoteUrl.Segments.Last().TrimEnd('/');
scheme = new C4String(remoteUrl.Scheme);
host = new C4String(remoteUrl.Host);
path = new C4String(pathStr);
addr.scheme = scheme.AsC4Slice();
addr.hostname = host.AsC4Slice();
addr.port = (ushort)remoteUrl.Port;
addr.path = path.AsC4Slice();
}
else
{
otherDB = Config.OtherDB;
}
var options = Config.Options;
var userInfo = remoteUrl?.UserInfo?.Split(':');
if (userInfo?.Length == 2)
{
throw new ArgumentException(
"Embedded credentials in a URL (username:password@url) are not allowed; use the BasicAuthenticator class instead");
}
Config.Authenticator?.Authenticate(options);
options.Build();
var push = Config.ReplicatorType.HasFlag(ReplicatorType.Push);
var pull = Config.ReplicatorType.HasFlag(ReplicatorType.Pull);
var continuous = Config.Continuous;
// Clear the reset flag, it is a one-time thing
Config.Options.Reset = false;
var socketFactory = Config.SocketFactory;
socketFactory.context = GCHandle.ToIntPtr(GCHandle.Alloc(this)).ToPointer();
_nativeParams = new ReplicatorParameters(options)
{
Push = Mkmode(push, continuous),
Pull = Mkmode(pull, continuous),
Context = this,
OnDocumentError = OnDocError,
OnStatusChanged = StatusChangedCallback,
SocketFactory = &socketFactory
};
var err = new C4Error();
var status = default(C4ReplicatorStatus);
_stopping = false;
_databaseThreadSafety.DoLocked(() =>
{
C4Error localErr;
_repl = Native.c4repl_new(Config.Database.c4db, addr, dbNameStr, otherDB != null ? otherDB.c4db : null,
_nativeParams.C4Params, &localErr);
err = localErr;
if (_repl != null)
{
status = Native.c4repl_getStatus(_repl);
Config.Database.ActiveReplications.Add(this);
}
else
{
status = new C4ReplicatorStatus {
error = err,
level = C4ReplicatorActivityLevel.Stopped,
progress = new C4Progress()
};
}
});
scheme.Dispose();
path.Dispose();
host.Dispose();
UpdateStateProperties(status);
DispatchQueue.DispatchSync(() => StatusChangedCallback(status));
}
internal void ResolveConflict([NotNull] string docID, [NotNull] IConflictResolver resolver)
{
Debug.Assert(docID != null);
Document doc = null, otherDoc = null, baseDoc = null;
var inConflict = true;
while (inConflict)
{
ThreadSafety.DoLocked(() =>
{
LiteCoreBridge.Check(err => Native.c4db_beginTransaction(_c4db, err));
try {
doc = new Document(this, docID);
if (!doc.Exists)
{
doc.Dispose();
return;
}
otherDoc = new Document(this, docID);
if (!otherDoc.Exists)
{
doc.Dispose();
otherDoc.Dispose();
return;
}
otherDoc.SelectConflictingRevision();
baseDoc = new Document(this, docID);
if (!baseDoc.SelectCommonAncestor(doc, otherDoc) || baseDoc.ToDictionary() == null)
{
baseDoc.Dispose();
baseDoc = null;
}
LiteCoreBridge.Check(err => Native.c4db_endTransaction(_c4db, true, err));
} catch (Exception) {
doc?.Dispose();
otherDoc?.Dispose();
baseDoc?.Dispose();
LiteCoreBridge.Check(err => Native.c4db_endTransaction(_c4db, false, err));
}
});
var conflict = new Conflict(doc, otherDoc, baseDoc);
var logID = new SecureLogString(doc.Id, LogMessageSensitivity.PotentiallyInsecure);
Log.To.Database.I(Tag, $"Resolving doc '{logID}' with {resolver.GetType().Name} (mine={doc.RevID}, theirs={otherDoc.RevID}, base={baseDoc?.RevID})");
Document resolved = null;
try {
resolved = resolver.Resolve(conflict);
if (resolved == null)
{
throw new LiteCoreException(new C4Error(C4ErrorCode.Conflict));
}
SaveResolvedDocument(resolved, conflict);
inConflict = false;
} catch (LiteCoreException e) {
if (e.Error.domain == C4ErrorDomain.LiteCoreDomain && e.Error.code == (int)C4ErrorCode.Conflict)
{
continue;
}
throw;
} finally {
resolved?.Dispose();
if (resolved != doc)
{
doc?.Dispose();
}
if (resolved != otherDoc)
{
otherDoc?.Dispose();
}
if (resolved != baseDoc)
{
baseDoc?.Dispose();
}
}
}
}
private Document Save([NotNull] Document document, bool deletion)
{
if (document.IsInvalidated)
{
throw new CouchbaseLiteException(StatusCode.NotAllowed, "Cannot save or delete a MutableDocument that has already been used to save or delete");
}
if (deletion && document.RevID == null)
{
throw new CouchbaseLiteException(StatusCode.NotAllowed, "Cannot delete a document that has not yet been saved");
}
var docID = document.Id;
var doc = document;
Document baseDoc = null, otherDoc = null;
C4Document *newDoc = null;
Document retVal = null;
while (true)
{
var resolve = false;
retVal = ThreadSafety.DoLocked(() =>
{
VerifyDB(doc);
LiteCoreBridge.Check(err => Native.c4db_beginTransaction(_c4db, err));
try {
if (deletion)
{
// Check for no-op case if the document does not exist
var curDoc = (C4Document *)NativeHandler.Create().AllowError(new C4Error(C4ErrorCode.NotFound))
.Execute(err => Native.c4doc_get(_c4db, docID, true, err));
if (curDoc == null)
{
(document as MutableDocument)?.MarkAsInvalidated();
return(null);
}
Native.c4doc_free(curDoc);
}
var newDocOther = newDoc;
Save(doc, &newDocOther, baseDoc?.c4Doc?.HasValue == true ? baseDoc.c4Doc.RawDoc : null, deletion);
if (newDocOther != null)
{
// Save succeeded, so commit
newDoc = newDocOther;
LiteCoreBridge.Check(err =>
{
var success = Native.c4db_endTransaction(_c4db, true, err);
if (!success)
{
Native.c4doc_free(newDoc);
}
return(success);
});
(document as MutableDocument)?.MarkAsInvalidated();
baseDoc?.Dispose();
return(new Document(this, docID, new C4DocumentWrapper(newDoc)));
}
// There was a conflict
if (deletion && !doc.IsDeleted)
{
var deletedDoc = doc.ToMutable();
deletedDoc.MarkAsDeleted();
doc = deletedDoc;
}
if (doc.c4Doc != null)
{
baseDoc = new Document(this, docID, doc.c4Doc.Retain <C4DocumentWrapper>());
}
otherDoc = new Document(this, docID);
if (!otherDoc.Exists)
{
LiteCoreBridge.Check(err => Native.c4db_endTransaction(_c4db, false, err));
return(null);
}
} catch (Exception) {
baseDoc?.Dispose();
otherDoc?.Dispose();
LiteCoreBridge.Check(err => Native.c4db_endTransaction(_c4db, false, err));
throw;
}
resolve = true;
LiteCoreBridge.Check(err => Native.c4db_endTransaction(_c4db, false, err));
return(null);
});
if (!resolve)
{
return(retVal);
}
// Resolve Conflict
Document resolved = null;
try {
var resolver = Config.ConflictResolver;
var conflict = new Conflict(doc, otherDoc, baseDoc);
resolved = resolver.Resolve(conflict);
if (resolved == null)
{
throw new LiteCoreException(new C4Error(C4ErrorCode.Conflict));
}
} finally {
baseDoc?.Dispose();
if (!ReferenceEquals(resolved, otherDoc))
{
otherDoc?.Dispose();
}
}
retVal = ThreadSafety.DoLocked(() =>
{
var current = new Document(this, docID);
if (resolved.RevID == current.RevID)
{
(document as MutableDocument)?.MarkAsInvalidated();
current.Dispose();
return(resolved); // Same as current
}
// For saving
doc = resolved;
baseDoc = current;
deletion = resolved.IsDeleted;
return(null);
});
if (retVal != null)
{
return(retVal);
}
}
}
private void Save([NotNull] Document doc, C4Document **outDoc, C4Document *baseDoc, bool deletion)
{
var revFlags = (C4RevisionFlags)0;
if (deletion)
{
revFlags = C4RevisionFlags.Deleted;
}
byte[] body = null;
if (!deletion && !doc.IsEmpty)
{
body = doc.Encode();
var root = Native.FLValue_FromTrustedData(body);
if (root == null)
{
Log.To.Database.E(Tag, "Failed to encode document body properly. Aborting save of document!");
return;
}
var rootDict = Native.FLValue_AsDict(root);
if (rootDict == null)
{
Log.To.Database.E(Tag, "Failed to encode document body properly. Aborting save of document!");
return;
}
ThreadSafety.DoLocked(() =>
{
if (Native.c4doc_dictContainsBlobs(rootDict, SharedStrings.SharedKeys))
{
revFlags |= C4RevisionFlags.HasAttachments;
}
});
}
else if (doc.IsEmpty)
{
FLEncoder *encoder = SharedEncoder;
Native.FLEncoder_BeginDict(encoder, 0);
Native.FLEncoder_EndDict(encoder);
body = Native.FLEncoder_Finish(encoder, null);
Native.FLEncoder_Reset(encoder);
}
var rawDoc = baseDoc != null ? baseDoc :
doc.c4Doc?.HasValue == true ? doc.c4Doc.RawDoc : null;
if (rawDoc != null)
{
doc.ThreadSafety.DoLocked(() =>
{
ThreadSafety.DoLocked(() =>
{
*outDoc = (C4Document *)NativeHandler.Create()
.AllowError((int)C4ErrorCode.Conflict, C4ErrorDomain.LiteCoreDomain).Execute(
err => Native.c4doc_update(rawDoc, body, revFlags, err));
});
});
}
else
{
ThreadSafety.DoLocked(() =>
{
*outDoc = (C4Document *)NativeHandler.Create()
.AllowError((int)C4ErrorCode.Conflict, C4ErrorDomain.LiteCoreDomain).Execute(
err => Native.c4doc_create(_c4db, doc.Id, body, revFlags, err));
});
}
}
public Document GetDocument(string id)
{
CBDebug.MustNotBeNull(Log.To.Database, Tag, nameof(id), id);
return(ThreadSafety.DoLocked(() => GetDocumentInternal(id)));
}
