public void SetupCollection()
{
var uri = new MongoUrl(ConnectionString);
var client = new MongoClient(uri);
MongoDatabase db = client.GetServer().GetDatabase(uri.DatabaseName);
Int64 cappedSize;
if (!Int64.TryParse(CappedSizeInMb, out cappedSize))
{
cappedSize = 5 * 1024L;
}
if (!db.CollectionExists(CollectionName))
{
CollectionOptionsBuilder options = CollectionOptions
.SetCapped(true)
.SetMaxSize(1024L * 1024L * cappedSize); //5 gb.
db.CreateCollection(CollectionName, options);
}
LogCollection = db.GetCollection(CollectionName);
var builder = new IndexOptionsBuilder();
const string ttlIndex = FieldNames.Timestamp + "_-1";
var index = LogCollection.GetIndexes().SingleOrDefault(x => x.Name == ttlIndex);
if (index != null)
{
if (ExpireAfter != null)
{
if (index.TimeToLive != ExpireAfter.ToTimeSpan())
{
var d = new CommandDocument()
{
{ "collMod", CollectionName },
{
"index", new BsonDocument
{
{ "keyPattern", new BsonDocument {
{ FieldNames.Timestamp, -1 }
} },
{ "expireAfterSeconds", (int)(ExpireAfter.ToTimeSpan().TotalSeconds) }
}
}
};
db.RunCommand(d);
}
}
}
else
{
if (ExpireAfter != null)
{
builder.SetTimeToLive(ExpireAfter.ToTimeSpan());
}
LogCollection.CreateIndex(IndexKeys.Descending(FieldNames.Timestamp), builder);
}
LogCollection.CreateIndex(IndexKeys
.Ascending(FieldNames.Level, FieldNames.Thread, FieldNames.Loggername)
);
}