/// <summary>
/// Add a log event to the ElasticSearch Repo
/// </summary>
/// <param name="loggingEvent"></param>
protected override void Append(Core.LoggingEvent loggingEvent)
{
if (string.IsNullOrEmpty(ConnectionString))
{
var exception = new InvalidOperationException("Connection string not present.");
ErrorHandler.Error("Connection string not included in appender.", exception, ErrorCode.GenericFailure);
return;
}
client = new ElasticClient(ConnectionBuilder.BuildElsticSearchConnection(ConnectionString));
LogEvent logEvent = new LogEvent();
if (logEvent == null)
{
throw new ArgumentNullException("logEvent");
}
logEvent.LoggerName = loggingEvent.LoggerName;
logEvent.Domain = loggingEvent.Domain;
logEvent.Identity = loggingEvent.Identity;
logEvent.ThreadName = loggingEvent.ThreadName;
logEvent.UserName = loggingEvent.UserName;
logEvent.MessageObject = loggingEvent.MessageObject == null ? "" : loggingEvent.MessageObject.ToString();
logEvent.TimeStamp = loggingEvent.TimeStamp;
logEvent.Exception = loggingEvent.ExceptionObject == null ? "" : loggingEvent.MessageObject.ToString();
logEvent.Message = loggingEvent.RenderedMessage;
logEvent.Fix = loggingEvent.Fix.ToString();
logEvent.HostName = Environment.MachineName;
if (loggingEvent.Level != null)
{
logEvent.Level = loggingEvent.Level.DisplayName;
}
if (loggingEvent.LocationInformation != null)
{
logEvent.ClassName = loggingEvent.LocationInformation.ClassName;
logEvent.FileName = loggingEvent.LocationInformation.FileName;
logEvent.LineNumber = loggingEvent.LocationInformation.LineNumber;
logEvent.FullInfo = loggingEvent.LocationInformation.FullInfo;
logEvent.MethodName = loggingEvent.LocationInformation.MethodName;
}
logEvent.Properties = loggingEvent.Properties.GetKeys().ToDictionary(key => key, key => logEvent.Properties[key].ToString());
if (client.IsValid)
{
client.IndexAsync(logEvent);
}
else
{
var exception = new InvalidOperationException("Connection to ElasticSearch is invalid.");
ErrorHandler.Error("Invalid connection to ElasticSearch", exception, ErrorCode.GenericFailure);
return;
}
}
private static LogEvent CreateLogEvent(LoggingEvent loggingEvent)
{
if (loggingEvent == null)
{
throw new ArgumentNullException("loggingEvent");
}
var logEvent = new LogEvent();
logEvent.Id = new UniqueIdGenerator().GenerateUniqueId();
logEvent.LoggerName = loggingEvent.LoggerName;
logEvent.Domain = loggingEvent.Domain;
logEvent.Identity = loggingEvent.Identity;
logEvent.ThreadName = loggingEvent.ThreadName;
logEvent.UserName = loggingEvent.UserName;
logEvent.MessageObject = loggingEvent.MessageObject == null ? "" : loggingEvent.MessageObject.ToString();
logEvent.TimeStamp = loggingEvent.TimeStamp.ToUniversalTime().ToString("O");
logEvent.Exception = loggingEvent.ExceptionObject == null ? "" : loggingEvent.ExceptionObject.ToString();
logEvent.Message = loggingEvent.RenderedMessage;
logEvent.Fix = loggingEvent.Fix.ToString();
logEvent.HostName = Environment.MachineName;
if (loggingEvent.Level != null)
{
logEvent.Level = loggingEvent.Level.DisplayName;
}
if (loggingEvent.LocationInformation != null)
{
logEvent.ClassName = loggingEvent.LocationInformation.ClassName;
logEvent.FileName = loggingEvent.LocationInformation.FileName;
logEvent.LineNumber = loggingEvent.LocationInformation.LineNumber;
logEvent.FullInfo = loggingEvent.LocationInformation.FullInfo;
logEvent.MethodName = loggingEvent.LocationInformation.MethodName;
}
var properties = loggingEvent.GetProperties();
foreach (var propertyKey in properties.GetKeys())
{
logEvent.Properties.Add(propertyKey, properties[propertyKey].ToString());
}
// Add a "@timestamp" field to match the logstash format
logEvent.Properties.Add("@timestamp", loggingEvent.TimeStamp.ToUniversalTime().ToString("O"));
return logEvent;
}
/// <summary>
/// Create the new event in Elasticsearch by performing a generic http post
/// </summary>
/// <param name="logEvent">LogEvent with parameters filled in</param>
public void CreateEvent(LogEvent logEvent)
{
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
string json = new JavaScriptSerializer().Serialize(logEvent);
streamWriter.Write(json);
streamWriter.Flush();
streamWriter.Close();
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
httpResponse.Close();
if (httpResponse.StatusCode != HttpStatusCode.Created)
{
throw new InvalidOperationException("Failed to correctly add the event to the Elasticsearch index.");
}
}
}
