/// <summary>
/// Emit a batch of log events, running to completion synchronously.
/// </summary>
/// <param name="events">The events to emit.</param>
/// <remarks>Override either <see cref="PeriodicBatchingSink.EmitBatch"/> or <see cref="PeriodicBatchingSink.EmitBatchAsync"/>,
/// not both.</remarks>
protected override void EmitBatch(IEnumerable <LogEvent> events)
{
var payload = new StringWriter();
payload.Write("{\"d\":[");
var formatter = new MongoDBJsonFormatter(true,
renderMessage: true,
formatProvider: _formatProvider);
var delimStart = "{";
foreach (var logEvent in events)
{
payload.Write(delimStart);
formatter.Format(logEvent, payload);
payload.Write(",\"UtcTimestamp\":\"{0:u}\"}}",
logEvent.Timestamp.ToUniversalTime().DateTime);
delimStart = ",{";
}
payload.Write("]}");
var bson = BsonDocument.Parse(payload.ToString());
var docs = bson["d"].AsBsonArray.Select(x => x.AsBsonDocument);
Task.WaitAll(GetLogCollection().InsertManyAsync(docs));
}
/// <summary>
/// Construct a sink posting to a specified database.
/// </summary>
/// <param name="database">The MongoDB database.</param>
/// <param name="batchPostingLimit">The maximum number of events to post in a single batch.</param>
/// <param name="period">The time to wait between checking for event batches.</param>
/// <param name="formatProvider">Supplies culture-specific formatting information, or null.</param>
/// <param name="collectionName">Name of the MongoDb collection to use for the log. Default is "log".</param>
/// <param name="collectionCreationOptions">Collection Creation Options for the log collection creation.</param>
public MongoDBSink(
IMongoDatabase database,
int batchPostingLimit = DefaultBatchPostingLimit,
TimeSpan?period = null,
IFormatProvider formatProvider = null,
string collectionName = DefaultCollectionName,
CreateCollectionOptions collectionCreationOptions = null)
: base(batchPostingLimit, period ?? DefaultPeriod)
{
if (database == null)
{
throw new ArgumentNullException(nameof(database));
}
this._mongoDatabase = database;
this._collectionName = collectionName;
this._mongoDbJsonFormatter = new MongoDBJsonFormatter(true, renderMessage: true, formatProvider: formatProvider);
this._mongoDatabase.VerifyCollectionExists(this._collectionName, collectionCreationOptions);
}
/// <summary>
/// Emit a batch of log events, running to completion synchronously.
/// </summary>
/// <param name="events">The events to emit.</param>
/// <remarks>Override either <see cref="PeriodicBatchingSink.EmitBatch"/> or <see cref="PeriodicBatchingSink.EmitBatchAsync"/>,
/// not both.</remarks>
protected override void EmitBatch(IEnumerable<LogEvent> events)
{
var payload = new StringWriter();
payload.Write("{\"d\":[");
var formatter = new MongoDBJsonFormatter(true,
renderMessage: true,
formatProvider: _formatProvider);
var delimStart = "{";
foreach (var logEvent in events)
{
payload.Write(delimStart);
formatter.Format(logEvent, payload);
payload.Write(",\"UtcTimestamp\":\"{0:u}\"}}",
logEvent.Timestamp.ToUniversalTime().DateTime);
delimStart = ",{";
}
payload.Write("]}");
var bson = BsonDocument.Parse(payload.ToString());
var docs = bson["d"].AsBsonArray.Select(x => x.AsBsonDocument);
Task.WaitAll(GetLogCollection().InsertManyAsync(docs));
}