/// <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 SimpleJsonFormatter(true);
var delimStart = "{";
foreach (var logEvent in events)
{
payload.Write(delimStart);
formatter.Format(logEvent, payload);
var renderedMessage = logEvent.RenderedMessage;
payload.Write(",\"UtcTimestamp\":\"{0:u}\",\"RenderedMessage\":\"{1}\"}}",
logEvent.Timestamp.ToUniversalTime().DateTime,
SimpleJsonFormatter.Escape(renderedMessage));
delimStart = ",{";
}
payload.Write("]}");
var bson = BsonDocument.Parse(payload.ToString());
var docs = bson["d"].AsBsonArray;
GetLogCollection().InsertBatch(docs);
}
/// <summary>
/// Emit a batch of log events, running asynchronously.
/// </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 async Task EmitBatchAsync(IEnumerable <LogEvent> events)
{
var payload = new StringWriter();
payload.Write("{\"docs\":[");
var formatter = new SimpleJsonFormatter(true);
var delimStart = "{";
foreach (var logEvent in events)
{
payload.Write(delimStart);
formatter.Format(logEvent, payload);
var renderedMessage = logEvent.RenderedMessage;
payload.Write(",\"UtcTimestamp\":\"{0:u}\",\"RenderedMessage\":\"{1}\"}}",
logEvent.Timestamp.ToUniversalTime().DateTime,
SimpleJsonFormatter.Escape(renderedMessage));
delimStart = ",{";
}
payload.Write("]}");
var content = new StringContent(payload.ToString(), Encoding.UTF8, "application/json");
var result = await _httpClient.PostAsync(BulkUploadResource, content);
if (!result.IsSuccessStatusCode)
{
SelfLog.WriteLine("Received failed result {0}: {1}", result.StatusCode, result.Content.ReadAsStringAsync().Result);
}
}
public void WellKnownSpecialCharactersAreEscapedAsNormal()
{
const string s = "\\\"\t\r\n\f";
var escaped = SimpleJsonFormatter.Escape(s);
Assert.AreEqual("\\\\\\\"\\t\\r\\n\\f", escaped);
}
public void EmbeddedEscapesPreservePrefixAndSuffix()
{
const string s = "a\nb";
var escaped = SimpleJsonFormatter.Escape(s);
Assert.AreEqual("a\\nb", escaped);
}
public void UnprintableCharactersAreEscapedAsUnicodeSequences()
{
const string s = "\u0001";
var escaped = SimpleJsonFormatter.Escape(s);
Assert.AreEqual("\\u0001", escaped);
}
public void StringsWithoutSpecialCharactersAreUnchanged()
{
const string s = "Hello, world!";
var escaped = SimpleJsonFormatter.Escape(s);
Assert.AreSame(s, escaped);
}