public DatabaseObserver(C4Database *database, DatabaseObserverCallback callback, object context)
{
_context = context;
_callback = callback;
_nativeCallback = DbObserverCallback;
var id = Guid.NewGuid();
_id = GCHandle.Alloc(id, GCHandleType.Pinned);
_observer = (long)LiteCoreBridge.Check(err => {
_ObserverMap[id] = this;
return(Native.c4dbobs_create(database, _nativeCallback, GCHandle.ToIntPtr(_id).ToPointer()));
});
}
private void ObserverTask()
{
var database = OpenDB();
var handle = GCHandle.Alloc(this);
C4DatabaseObserverCallback callback = ObsCallback;
var observer = Native.c4dbobs_create(database, callback, GCHandle.ToIntPtr(handle).ToPointer());
var lastSequence = 0UL;
try {
do
{
lock (_observerMutex)
{
if (!_changesToObserve)
{
continue;
}
Write("8");
_changesToObserve = false;
}
var changes = new C4DatabaseChange[10];
uint nDocs;
bool external;
while (0 < (nDocs = Native.c4dbobs_getChanges(observer, changes, 10U, &external)))
{
try
{
external.Should().BeTrue("because all changes will be external in this test");
for (int i = 0; i < nDocs; ++i)
{
changes[i].docID.CreateString().Should().StartWith("doc-",
"because otherwise the document ID is not what we created");
lastSequence = changes[i].sequence;
}
}
finally
{
Native.c4dbobs_releaseChanges(changes, nDocs);
}
}
Task.Delay(TimeSpan.FromMilliseconds(100)).Wait();
} while (lastSequence < NumDocs);
} finally {
Native.c4dbobs_free(observer);
handle.Free();
CloseDB(database);
}
}
public static extern C4DatabaseObserver *c4dbobs_create(C4Database *database, C4DatabaseObserverCallback callback, void *context);
public C4DatabaseObserver *c4dbobs_create(C4Database *database, C4DatabaseObserverCallback callback, void *context) => Native.c4dbobs_create(database, callback, context);
