static IEnumerable <LogEventProperty> GetProperties(object value, ILogEventPropertyValueFactory recursive)
{
foreach (var prop in value.GetType().GetPropertiesRecursive())
{
object propValue;
try
{
propValue = prop.GetValue(value);
}
catch (TargetParameterCountException)
{
SelfLog.WriteLine("The property accessor {0} is a non-default indexer", prop);
continue;
}
catch (TargetInvocationException ex)
{
SelfLog.WriteLine("The property accessor {0} threw exception {1}", prop, ex);
propValue = "The property accessor threw an exception: " + ex.InnerException.GetType().Name;
}
yield return(new LogEventProperty(prop.Name, recursive.CreatePropertyValue(propValue, true)));
}
}
private void RollDatabase()
{
try
{
using (var dnConn = GetSqLiteConnection())
{
if (new FileInfo(_databasePath).Length > _maxDatabaseSize * 1024 * 1024)
{
var dbExtension = Path.GetExtension(_databasePath);
var newFilePath = Path.Combine(Path.GetDirectoryName(_databasePath) ?? "Logs",
$"{Path.GetFileNameWithoutExtension(_databasePath)}-{DateTime.Now:yyyyMMdd_hhmmss.ff}{dbExtension}");
File.Copy(_databasePath, newFilePath, true);
dnConn.DeleteAll <Logs>();
SelfLog.WriteLine($"Rolling database to {newFilePath}");
}
}
}
catch (Exception e)
{
SelfLog.WriteLine(e.Message);
}
}
protected override void EmitBatch(IEnumerable <LogEvent> events)
{
// ReSharper disable once PossibleMultipleEnumeration
try
{
Task[] sendTasks = events.Select(logEvent =>
{
JObject json = _converter.Value.GetGelfJson(logEvent);
Task resultTask = _transport.Value.Send(json.ToString(Newtonsoft.Json.Formatting.None));
return(resultTask);
}).ToArray();
var t = Task.WhenAll(sendTasks);
t.GetAwaiter().GetResult();
base.EmitBatch(events);
}
catch (Exception exc)
{
SelfLog.WriteLine("Oops something going wrong {0}", exc);
}
// ReSharper disable once PossibleMultipleEnumeration
}
void ApplyRetentionPolicy(string currentFilePath)
{
if (_retainedFileCountLimit == null)
{
return;
}
var currentFileName = Path.GetFileName(currentFilePath);
// We consider the current file to exist, even if nothing's been written yet,
// because files are only opened on response to an event being processed.
var potentialMatches = Directory.GetFiles(_roller.LogFileDirectory, _roller.DirectorySearchPattern)
.Select(Path.GetFileName)
.Union(new [] { currentFileName });
var newestFirst = _roller
.SelectMatches(potentialMatches)
.OrderByDescending(m => m.DateTime)
.ThenByDescending(m => m.SequenceNumber)
.Select(m => m.Filename);
var toRemove = newestFirst
.Where(n => StringComparer.OrdinalIgnoreCase.Compare(currentFileName, n) != 0)
.Skip(_retainedFileCountLimit.Value - 1)
.ToList();
foreach (var obsolete in toRemove)
{
var fullPath = Path.Combine(_roller.LogFileDirectory, obsolete);
try
{
System.IO.File.Delete(fullPath);
}
catch (Exception ex)
{
SelfLog.WriteLine("Error {0} while removing obsolete file {1}", ex, fullPath);
}
}
}
public async Task <SentPayloadResult> SendPayloadAsync(List <string> payload, bool first)
{
try
{
if (payload == null || !payload.Any())
{
return(new SentPayloadResult(null, true));
}
var response = await _elasticLowLevelClient.BulkAsync <DynamicResponse>(PostData.MultiJson(payload));
if (response.Success)
{
var cleanPayload = new List <string>();
var invalidPayload = GetInvalidPayloadAsync(response, payload, out cleanPayload);
if ((cleanPayload?.Any() ?? false) && first)
{
await SendPayloadAsync(cleanPayload, false);
}
return(new SentPayloadResult(response, true, invalidPayload));
}
else
{
SelfLog.WriteLine("Received failed ElasticSearch shipping result {0}: {1}", response.HttpStatusCode,
response.OriginalException);
return(new SentPayloadResult(response, false,
new InvalidResult()
{
StatusCode = response.HttpStatusCode ?? 500,
Content = response.OriginalException.ToString()
}));
}
}
catch (Exception ex)
{
SelfLog.WriteLine("Exception while emitting periodic batch from {0}: {1}", this, ex);
return(new SentPayloadResult(null, false, null, ex));
}
}
private void CreateDynamoDbLogTable()
{
var request = new CreateTableRequest(
tableName: tableName,
keySchema: new List <KeySchemaElement>
{
new KeySchemaElement
{
AttributeName = "Id",
KeyType = KeyType.HASH
}
},
attributeDefinitions: new List <AttributeDefinition>
{
new AttributeDefinition()
{
AttributeName = "Id",
AttributeType = ScalarAttributeType.S
}
},
provisionedThroughput: new ProvisionedThroughput
{
ReadCapacityUnits = 1,
WriteCapacityUnits = 1
}
);
try
{
using (var client = new AmazonDynamoDBClient(BasicAwsCredentials, AmazonDynamoDbConfig))
{
var result = client.CreateTableAsync(request).Result;
}
}
catch (ResourceInUseException)
{
SelfLog.WriteLine("Table already exists.");
}
}
static IEnumerable <LogEventProperty> GetProperties(object value, ILogEventPropertyValueFactory recursive)
{
var valueType = value.GetType();
var props = valueType.GetProperties().Where(p => p.CanRead &&
p.GetGetMethod().IsPublic&&
!p.GetGetMethod().IsStatic);
foreach (var prop in props)
{
object propValue;
try
{
propValue = prop.GetValue(value, null);
}
catch (TargetInvocationException ex)
{
SelfLog.WriteLine("The property accessor {0} threw exception {1}", prop, ex);
propValue = "The property accessor threw an exception: " + ex.InnerException.GetType().Name;
}
yield return(new LogEventProperty(prop.Name, recursive.CreatePropertyValue(propValue, true)));
}
}
public void writeAndRetry(string payload)
{
for (int i = 0; i < _clientConfig.MaxRetries; i++)
{
// backoff mechanism
int backoffTime = (int)Math.Min(Math.Pow(i, 2), _clientConfig.MaxBackoff);
if (backoffTime > 0)
{
SelfLog.WriteLine("Making a new attempt in {0} seconds ({1}/{2})", backoffTime, i, _clientConfig.MaxRetries);
}
Thread.Sleep(backoffTime * 1000);
if (_client == null || _client.Connected == false)
{
try
{
connect();
}
catch (Exception e)
{
SelfLog.WriteLine("Exception while connecting client: {0}", e);
continue;
}
}
try
{
byte[] data = UTF8.GetBytes(payload);
_stream.Write(data, 0, data.Length);
return;
}
catch (Exception e)
{
SelfLog.WriteLine("Retry to send log event: {0}", e);
}
}
SelfLog.WriteLine("Exception while sending log event, event dropped");
}
// connect to the specify endpoint
private void connect()
{
SelfLog.WriteLine("Starting a new connection to {0}:{1} (SSL = {2})", _clientConfig.Ip, _clientConfig.Port, _clientConfig.UseSSL);
try
{
_client = new TcpClient();
_client.ConnectAsync(_clientConfig.Ip, _clientConfig.Port).Wait();
_rawStream = _client.GetStream();
if (_clientConfig.UseSSL)
{
_sslStream = new SslStream(_rawStream);
_sslStream.AuthenticateAsClientAsync(_clientConfig.Ip).Wait();
}
}
catch (Exception e)
{
throw new Exception(e.Message);
}
}
/// <summary>
/// Construct a message template using manually-defined text and property tokens.
/// </summary>
/// <param name="text">The full text of the template; used by Serilog internally to avoid unneeded
/// string concatenation.</param>
/// <param name="tokens">The text and property tokens defining the template.</param>
/// <exception cref="ArgumentNullException">When <paramref name="text"/> is <code>null</code></exception>
/// <exception cref="ArgumentNullException">When <paramref name="tokens"/> is <code>null</code></exception>
public MessageTemplate(string text, IEnumerable <MessageTemplateToken> tokens)
{
Text = text ?? throw new ArgumentNullException(nameof(text));
_tokens = (tokens ?? throw new ArgumentNullException(nameof(tokens))).ToArray();
var propertyTokens = GetElementsOfTypeToArray <PropertyToken>(_tokens);
if (propertyTokens.Length != 0)
{
var allPositional = true;
var anyPositional = false;
foreach (var propertyToken in propertyTokens)
{
if (propertyToken.IsPositional)
{
anyPositional = true;
}
else
{
allPositional = false;
}
}
if (allPositional)
{
PositionalProperties = propertyTokens;
}
else
{
if (anyPositional)
{
SelfLog.WriteLine("Message template is malformed: {0}", text);
}
NamedProperties = propertyTokens;
}
}
}
/// <summary>
/// Write log events to the specified file.
/// </summary>
/// <param name="sinkConfiguration">Logger sink configuration.</param>
/// <param name="path">Path to the file.</param>
/// <param name="restrictedToMinimumLevel">The minimum level for
/// events passed through the sink. Ignored when <paramref name="levelSwitch"/> is specified.</param>
/// <param name="levelSwitch">A switch allowing the pass-through minimum level
/// to be changed at runtime.</param>
/// <param name="formatProvider">Supplies culture-specific formatting information, or null.</param>
/// <param name="outputTemplate">A message template describing the format used to write to the sink.
/// the default is "{Timestamp} [{Level}] {Message}{NewLine}{Exception}".</param>
/// <param name="fileSizeLimitBytes">The maximum size, in bytes, to which a log file will be allowed to grow.
/// For unrestricted growth, pass null. The default is 1 GB.</param>
/// <param name="buffered">Indicates if flushing to the output file can be buffered or not. The default
/// is false.</param>
/// <returns>Configuration object allowing method chaining.</returns>
/// <remarks>The file will be written using the UTF-8 character set.</remarks>
public static LoggerConfiguration File(
this LoggerSinkConfiguration sinkConfiguration,
string path,
LogEventLevel restrictedToMinimumLevel = LevelAlias.Minimum,
string outputTemplate = DefaultOutputTemplate,
IFormatProvider formatProvider = null,
long?fileSizeLimitBytes = DefaultFileSizeLimitBytes,
LoggingLevelSwitch levelSwitch = null,
bool buffered = false)
{
if (sinkConfiguration == null)
{
throw new ArgumentNullException(nameof(sinkConfiguration));
}
if (outputTemplate == null)
{
throw new ArgumentNullException(nameof(outputTemplate));
}
var formatter = new MessageTemplateTextFormatter(outputTemplate, formatProvider);
FileSink sink;
try
{
sink = new FileSink(path, formatter, fileSizeLimitBytes, buffered: buffered);
}
catch (ArgumentException)
{
throw;
}
catch (Exception ex)
{
SelfLog.WriteLine("Unable to open file sink for {0}: {1}", path, ex);
return(sinkConfiguration.Sink(new NullSink()));
}
return(sinkConfiguration.Sink(sink, restrictedToMinimumLevel, levelSwitch));
}
/// <summary>
/// Emit the provided log event to the sink.
/// </summary>
/// <param name="logEvent">The log event to write.</param>
/// <remarks>
/// <see cref="LogEventLevel.Debug" />, <see cref="LogEventLevel.Information" /> and <see cref="LogEventLevel.Verbose" /> are registered as <see cref="EventLogEntryType.Information" />.
/// <see cref="LogEventLevel.Error" />, <see cref="LogEventLevel.Fatal" /> are registered as <see cref="EventLogEntryType.Error" />.
/// <see cref="LogEventLevel.Warning" /> are registered as <see cref="EventLogEntryType.Warning" />.
/// The Event ID in the Windows log will be set to the integer value of the <paramref name="logEvent"/>'s <see cref="LogEvent.Level"/> property, so that the log can be filtered with more granularity.</remarks>
public void Emit(LogEvent logEvent)
{
if (logEvent == null)
{
throw new ArgumentNullException("logEvent");
}
EventLogEntryType type;
switch (logEvent.Level)
{
case LogEventLevel.Debug:
case LogEventLevel.Information:
case LogEventLevel.Verbose:
type = EventLogEntryType.Information;
break;
case LogEventLevel.Error:
case LogEventLevel.Fatal:
type = EventLogEntryType.Error;
break;
case LogEventLevel.Warning:
type = EventLogEntryType.Warning;
break;
default:
SelfLog.WriteLine("Unexpected logging level, writing to EventLog as Information");
type = EventLogEntryType.Information;
break;
}
var payload = new StringWriter();
_textFormatter.Format(logEvent, payload);
System.Diagnostics.EventLog.WriteEntry(_source, payload.ToString(), type, (int)logEvent.Level);
}
private async Task PumpAsync()
{
try {
while (!_batchEventsCollection.IsCompleted)
{
var logEvents = _batchEventsCollection.Take(_cancellationTokenSource.Token);
SelfLog.WriteLine($"Sending batch of {logEvents.Count} logs");
var retValue = await WriteLogEventAsync(logEvents).ConfigureAwait(false);
if (retValue)
{
Interlocked.Add(ref _numMessages, -1 * logEvents.Count);
}
else
{
SelfLog.WriteLine($"Retrying after {_transientThresholdSpan.TotalSeconds} seconds...");
await Task.Delay(_transientThresholdSpan).ConfigureAwait(false);
if (!_batchEventsCollection.IsAddingCompleted)
{
_batchEventsCollection.Add(logEvents);
}
}
if (_cancellationTokenSource.IsCancellationRequested)
{
_cancellationTokenSource.Token.ThrowIfCancellationRequested();
}
}
}
catch (InvalidOperationException) { }
catch (OperationCanceledException) { }
catch (Exception ex) {
SelfLog.WriteLine(ex.Message);
}
}
private void SendBatchOneEventAtATime(IEnumerable <LogEvent> events)
{
foreach (var logEvent in events)
{
var eventData = ConvertLogEventToEventData(logEvent);
#if NET45
if (eventData.SerializedSizeInBytes > GetAllowedMessageSize(1))
{
SelfLog.WriteLine("Message too large to send with eventhub");
continue;
}
#endif
try
{
#if NET45
using (new TransactionScope(TransactionScopeOption.Suppress))
{
_eventHubClient.Send(eventData);
}
#else
_eventHubClient.SendAsync(eventData).Wait();
#endif
}
catch
{
try
{
Emit(logEvent);
}
catch
{
SelfLog.WriteLine("Could not Emit message");
}
}
}
}
private void FlushAndCloseEventHandlers()
{
try {
SelfLog.WriteLine("Halting sink...");
_eventCancellationToken.Cancel();
_cancellationToken.Cancel();
Task.WaitAll(_workerTasks.ToArray());
_canStop = true;
_timerResetEvent.Set();
// Flush events collection
while (_eventsCollection.TryTake(out LogEvent logEvent))
{
_logEventBatch.Enqueue(logEvent);
if (_logEventBatch.Count >= _batchSize)
{
FlushLogEventBatch();
}
}
FlushLogEventBatch();
// Flush events batch
while (_batchEventsCollection.TryTake(out var eventBatch))
{
WriteLogEventAsync(eventBatch).Wait(TimeSpan.FromSeconds(30));
}
Task.WaitAll(new[] { _eventPumpTask, _batchTask, _timerTask }, TimeSpan.FromSeconds(30));
}
catch (Exception ex) {
SelfLog.WriteLine(ex.Message);
}
}
/// <summary>
/// Construct a sink posting to the Windows event log, creating the specified <paramref name="source"/> if it does not exist.
/// </summary>
/// <param name="source">The source name by which the application is registered on the local computer. </param>
/// <param name="logName">The name of the log the source's entries are written to. Possible values include Application, System, or a custom event log.</param>
/// <param name="textFormatter">Supplies culture-specific formatting information, or null.</param>
/// <param name="machineName">The name of the machine hosting the event log written to.</param>
/// <param name="manageEventSource">If false does not check/create event source. Defaults to true i.e. allow sink to manage event source creation</param>
/// <param name="eventIdProvider">Supplies event ids for emitted log events.</param>
public EventLogSink(string source, string logName, ITextFormatter textFormatter, string machineName, bool manageEventSource, IEventIdProvider eventIdProvider)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (textFormatter == null)
{
throw new ArgumentNullException(nameof(textFormatter));
}
if (eventIdProvider == null)
{
throw new ArgumentNullException(nameof(eventIdProvider));
}
// The source is limitted in length and allowed chars, see: https://msdn.microsoft.com/en-us/library/e29k5ebc%28v=vs.110%29.aspx
if (source.Length > MaximumSourceNameLengthChars)
{
SelfLog.WriteLine("Trimming long event log source name to {0} characters", MaximumSourceNameLengthChars);
source = source.Substring(0, MaximumSourceNameLengthChars);
}
source = source.Replace("<", "_");
source = source.Replace(">", "_");
_eventIdProvider = eventIdProvider;
_textFormatter = textFormatter;
_log = new System.Diagnostics.EventLog(string.IsNullOrWhiteSpace(logName) ? ApplicationLogName : logName, machineName);
if (manageEventSource)
{
ConfigureSource(_log, source);
}
else
{
_log.Source = source;
}
}
private void EmitBatchChecked(ICollection <LogEvent> events)
{
if (events == null || !events.Any())
{
return;
}
string payload;
using (var writer = new StringWriter())
{
writer.Write("[");
var added = false;
foreach (var evt in events)
{
if (added)
{
writer.Write(",");
}
Formatter.Format(evt, writer);
added = true;
}
writer.Write("]");
payload = writer.ToString();
}
var result = HttpClient
.SendAsync(CreateRequest(payload), HttpCompletionOption.ResponseContentRead)
.GetAwaiter().GetResult();
if (!result.IsSuccessStatusCode)
{
var req = result.RequestMessage.Content.ReadAsStringAsync().GetAwaiter().GetResult();
var content = result.Content.ReadAsStringAsync().GetAwaiter().GetResult();
SelfLog.WriteLine("Posting logs to NewRelic gave status code: {0} Payload: {1} Exception: {2}", result.StatusCode, req, content);
}
}
/// <summary>
/// Construct a sink posting to the specified database.
/// </summary>
/// <param name="connectionString">Connection string to access the database.</param>
/// <param name="tableName">Name of the table to store the data in.</param>
/// <param name="includeProperties">Specifies if the properties need to be saved as well.</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="storeTimestampInUtc">Store Timestamp In UTC</param>
/// <param name="additionalDataColumns">Additional columns for data storage.</param>
/// <param name="autoCreateSqlTable">Create log table with the provided name on destination sql server.</param>
public MSSqlServerSink(string connectionString, string tableName, bool includeProperties, int batchPostingLimit,
TimeSpan period, IFormatProvider formatProvider, bool storeTimestampInUtc, DataColumn[] additionalDataColumns = null,
bool autoCreateSqlTable = false)
: base(batchPostingLimit, period)
{
if (string.IsNullOrWhiteSpace(connectionString))
{
throw new ArgumentNullException("connectionString");
}
if (string.IsNullOrWhiteSpace(tableName))
{
throw new ArgumentNullException("tableName");
}
_connectionString = connectionString;
_tableName = tableName;
_includeProperties = includeProperties;
_formatProvider = formatProvider;
_storeTimestampInUtc = storeTimestampInUtc;
_additionalDataColumns = additionalDataColumns;
// Prepare the data table
_eventsTable = CreateDataTable();
if (autoCreateSqlTable)
{
try
{
SqlTableCreator tableCreator = new SqlTableCreator(connectionString);
tableCreator.CreateTable(_eventsTable);
}
catch (Exception ex)
{
SelfLog.WriteLine("Exception {0} caught while creating table {1} to the database specified in the Connection string.", (object)ex, (object)tableName);
}
}
}
/// <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)
{
// Copy the events to the data table
FillDataTable(events);
try
{
using (var cn = new SqlConnection(_connectionString))
{
await cn.OpenAsync().ConfigureAwait(false);
using (var copy = _columnOptions.DisableTriggers
? new SqlBulkCopy(cn)
: new SqlBulkCopy(cn, SqlBulkCopyOptions.CheckConstraints | SqlBulkCopyOptions.FireTriggers, null)
)
{
copy.DestinationTableName = string.Format("[{0}].[{1}]", _schemaName, _tableName);
foreach (var column in _eventsTable.Columns)
{
var columnName = ((DataColumn)column).ColumnName;
var mapping = new SqlBulkCopyColumnMapping(columnName, columnName);
copy.ColumnMappings.Add(mapping);
}
await copy.WriteToServerAsync(_eventsTable).ConfigureAwait(false);
}
}
}
catch (Exception ex)
{
SelfLog.WriteLine("Unable to write {0} log events to the database due to following error: {1}", events.Count(), ex.Message);
}
finally
{
// Processed the items, clear for the next run
_eventsTable.Clear();
}
}
void OnTick()
{
try
{
do
{
var count = 0;
var events = new Queue <LogEvent>();
LogEvent next;
while (count < _batchSizeLimit && _queue.TryDequeue(out next))
{
count++;
events.Enqueue(next);
}
if (events.Count == 0)
{
return;
}
EmitBatch(events);
}while (true);
}
catch (Exception ex)
{
SelfLog.WriteLine("Exception while emitting periodic batch from {0}: {1}", this, ex);
}
finally
{
lock (_stateLock)
{
if (!_unloading)
{
SetTimer();
}
}
}
}
protected override async Task EmitBatchAsync(IEnumerable<LogEvent> events)
{
try
{
using (var conn = new SqliteConnection(_connectionString))
{
await conn.OpenAsync();
using (var tran = conn.BeginTransaction())
{
using (var cmdLogEntry = CreateLogEntryInsertCommand(conn, tran))
using (var cmdLogEntryProperty = CreateLogEntryPropertyInsertCommand(conn, tran))
{
foreach (var logEvent in events)
{
// Do not log events that were generated from browsing Sejil URL.
if (logEvent.Properties.Any(p => (p.Key == "RequestPath" || p.Key == "Path") &&
p.Value.ToString().Contains(_uri)))
{
continue;
}
var logId = await InsertLogEntryAsync(cmdLogEntry, logEvent);
foreach (var property in logEvent.Properties)
{
await InsertLogEntryPropertyAsync(cmdLogEntryProperty, logId, property);
}
}
}
tran.Commit();
}
conn.Close();
}
}
catch (Exception e)
{
SelfLog.WriteLine(e.Message);
}
}
static IEnumerable <TemplateProperty> GetProperties(
object value, IMessageTemplatePropertyValueFactory recursive)
{
var properties =
#if !REFLECTION_API_EVOLVED
// TODO: stop using LINQ
value.GetType().GetProperties().Where(p => p.CanRead &&
p.GetGetMethod().IsPublic&&
!p.GetGetMethod().IsStatic&&
(p.Name != "Item" || p.GetIndexParameters().Length == 0));
#else
value.GetType().GetPropertiesRecursive();
#endif
foreach (var prop in properties)
{
object propValue;
try
{
#if !REFLECTION_API_EVOLVED // https://blogs.msdn.microsoft.com/dotnet/2012/08/28/evolving-the-reflection-api/
propValue = prop.GetValue(value, null);
#else
propValue = prop.GetValue(value);
#endif
}
catch (TargetParameterCountException)
{
SelfLog.WriteLine("The property accessor {0} is a non-default indexer", prop);
continue;
}
catch (TargetInvocationException ex)
{
SelfLog.WriteLine("The property accessor {0} threw exception {1}", prop, ex);
propValue = "The property accessor threw an exception: " + ex.InnerException.GetType().Name;
}
yield return(new TemplateProperty(prop.Name, recursive.CreatePropertyValue(propValue, true)));
}
}
/// <summary>
/// Send payload to Datadog logs-backend.
/// </summary>
/// <param name="payload">Payload to send.</param>
public async Task WriteAsync(string payload)
{
for (int retry = 0; retry < MaxRetries; retry++)
{
int backoff = (int)Math.Min(Math.Pow(retry, 2), MaxBackoff);
if (retry > 0)
{
await Task.Delay(backoff * 1000);
}
if (IsConnectionClosed())
{
try
{
await ConnectAsync();
}
catch (Exception e)
{
SelfLog.WriteLine("Could not connect to Datadog: {0}", e);
continue;
}
}
try
{
SelfLog.WriteLine("Sending payload to Datadog: {0}", payload);
byte[] data = UTF8.GetBytes(payload);
_stream.Write(data, 0, data.Length);
return;
}
catch (Exception e)
{
CloseConnection();
SelfLog.WriteLine("Could not send data to Datadog: {0}", e);
}
}
SelfLog.WriteLine("Could not send payload to Datadog: {0}", payload);
}
public override void Format(IEnumerable <string> logEvents, TextWriter output)
{
if (logEvents == null)
{
throw new ArgumentNullException(nameof(logEvents));
}
if (output == null)
{
throw new ArgumentNullException(nameof(output));
}
if (!logEvents.Any())
{
SelfLog.WriteLine("log event is empty.");
return;
}
output.Write("[{\"logs\": [");
var delimStart = string.Empty;
foreach (var logEvent in logEvents)
{
if (string.IsNullOrWhiteSpace(logEvent))
{
continue;
}
if (CheckEventBodySize(logEvent))
{
output.Write(delimStart);
output.Write(logEvent);
delimStart = ",";
}
}
output.Write("]}]");
}
/// <summary>
/// Converts specified address or hostname into an <see cref="IPAddress"/>.
/// </summary>
/// <param name="address">The address to convert.</param>
/// <returns>
/// An <see cref="IPAddress"/> if address is found to be a valid IP address or DNS name;
/// otherwise null.
/// </returns>
public static IPAddress ToIPAddress(this string address)
{
if (IPAddress.TryParse(address, out var ipAddress))
{
return(ipAddress);
}
try
{
// TODO: Use Dns.GetHostEntry when moving to .NET Standard 2.0
var hostEntry = Dns.GetHostEntryAsync(address).Result;
return(hostEntry
.AddressList
.FirstOrDefault(a => a.AddressFamily == AddressFamily.InterNetwork));
}
catch (Exception e)
{
SelfLog.WriteLine("Unable to lookup hostname {0}: {1}", address, e);
}
return(null);
}
public void Emit(LogEvent logEvent)
{
List <Exception> exceptions = null;
foreach (var sink in _sinks)
{
try
{
sink.Emit(logEvent);
}
catch (Exception ex)
{
SelfLog.WriteLine("Caught exception while emitting to sink {0}: {1}", sink, ex);
exceptions = exceptions ?? new List <Exception>();
exceptions.Add(ex);
}
}
if (exceptions != null)
{
throw new AggregateException("Failed to emit a log event.", exceptions);
}
}
/// <summary>
/// Posts the messages.
/// </summary>
/// <param name="messages">The messages.</param>
/// <returns>A <see cref="Task"/> representing any asynchronous operation.</returns>
private async Task PostMessages(IEnumerable <MicrosoftExtendedLogEvent> messages)
{
// ReSharper disable once ForeachCanBePartlyConvertedToQueryUsingAnotherGetEnumerator
foreach (var logEvent in messages)
{
try
{
var message = this.CreateMessage(logEvent);
var json = JsonSerializer.Serialize(message, JsonSerializerOptions);
var result = await this.client.PostAsync(this.options.WebHookUri, new StringContent(json, Encoding.UTF8, "application/json")).ConfigureAwait(false);
if (!result.IsSuccessStatusCode)
{
throw new LoggingFailedException($"Received failed result {result.StatusCode} when posting events to Microsoft Teams.");
}
}
catch (Exception ex)
{
SelfLog.WriteLine($"{ex.Message}, {ex.StackTrace}");
this.options.FailureCallback?.Invoke(ex);
}
}
}
protected override async Task EmitBatchAsync(IEnumerable <LogEvent> events)
{
try
{
using (var connection = new MySqlConnection(_connectionString))
{
await connection.OpenAsync().ConfigureAwait(false);
if (_useBulkInsert)
{
await BulkInsert(events, connection).ConfigureAwait(false);
}
else
{
await Insert(events, connection).ConfigureAwait(false);
}
}
}
catch (Exception ex)
{
SelfLog.WriteLine("Unable to write {0} log events to the database due to following error: {1}", events.Count(), ex.Message);
}
}
protected async Task EnsureConnectedAsync()
{
try
{
bool endpointInitialzied = _endpoint?.IsConnected() ?? false;
if (endpointInitialzied)
{
return;
}
InitializeEndpoint();
await _endpoint.ConnectAsync();
_stream = _endpoint.GetStream();
_emitter = new FluentdEmitter(_stream);
}
catch (Exception ex)
{
SelfLog.WriteLine($"[Serilog.Sinks.Fluentd] Connection exception {ex.Message}\n{ex.StackTrace}");
}
}
private void CreateTable(MySqlConnection sqlConnection)
{
try
{
var tableCommandBuilder = new StringBuilder();
tableCommandBuilder.Append($"CREATE TABLE IF NOT EXISTS {_tableName} (");
tableCommandBuilder.Append("id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,");
tableCommandBuilder.Append("Timestamp VARCHAR(100),");
tableCommandBuilder.Append("Level VARCHAR(15),");
tableCommandBuilder.Append("Message TEXT,");
tableCommandBuilder.Append("Exception TEXT,");
tableCommandBuilder.Append("Properties TEXT,");
tableCommandBuilder.Append("_ts TIMESTAMP)");
var cmd = sqlConnection.CreateCommand();
cmd.CommandText = tableCommandBuilder.ToString();
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
SelfLog.WriteLine(ex.Message);
}
}