static int Main(string[] args)
{
Options options = new Options();
try
{
options.ReadAppConfigValues();
if (!CommandLine.Parser.Default.ParseArguments(args, options))
{
return 1;
}
if (!options.Validate())
{
Trace.TraceInformation(options.GetUsage());
return 1;
}
Trace.TraceInformation(options.GetParameterValueText());
Program program = new Program();
program.Run(options);
}
catch (Exception e)
{
Trace.TraceError("Exception in main thread!\n{0}\n", e.ToString());
return 2;
}
return 0;
}
void Run(Options options)
{
string level = "Message";
string provider = String.Empty;
string eventHtml = String.Empty;
//Query the event log for the event record.
Trace.WriteLine($"Fetching event log record {options.EventSource} {options.EventId}.");
EventLogQuery query = new EventLogQuery($"{options.EventSource}", PathType.LogName, $"*[System/EventRecordID = {options.EventId}]");
using (EventLogReader reader = new EventLogReader(query))
{
EventRecord record = reader.ReadEvent();
// If we found the record, add the event message to the email body.
// If we didn't find the record, we'll still send the email, but it won't include any of the event data.
if (record != null)
{
if (record.LevelDisplayName.Equals("Information", StringComparison.OrdinalIgnoreCase) && options.IgnoreInformation)
{
Trace.TraceInformation("Ignoring information message");
return;
}
else if (record.LevelDisplayName.Equals("Warning", StringComparison.OrdinalIgnoreCase) && options.IgnoreWarning)
{
Trace.TraceInformation("Ignoring warning message");
return;
}
else if (record.LevelDisplayName.Equals("Error", StringComparison.OrdinalIgnoreCase) && options.IgnoreError)
{
Trace.TraceInformation("Ignoring error message");
return;
}
if (IsKnownRecord(options, record))
{
Trace.TraceInformation("Ignoring known message");
return;
}
Trace.WriteLine($"Received event data.");
level = record.LevelDisplayName;
provider = record.ProviderName;
eventHtml += $"<div>MESSAGE: <br/>{HttpUtility.HtmlEncode(record.FormatDescription()).Replace("\n", "<br/>")}</div>";
}
}
// This will be the email body text.
string line1 = $"{level} message from {Environment.MachineName}";
string line2 = $" Source: {options.EventSource}/{provider}";
string line3 = $" EventRecordID: {options.EventId}";
string messageText = $"<div>{HttpUtility.HtmlEncode(line1)}</div>";
messageText += $"<div> {HttpUtility.HtmlEncode(line2)}</div>";
messageText += $"<div> {HttpUtility.HtmlEncode(line3)}</div>";
messageText += $"<div> </div>";
messageText += eventHtml;
// Send the email
MailMessage message = new MailMessage();
message.From = new MailAddress(options.EmailFrom.Trim());
foreach (string emailTo in options.EmailTo.Split(',', ';'))
{
message.To.Add(new MailAddress(emailTo.Trim()));
}
message.Subject = $"{options.EventSource} Service {level} message #{options.EventId}";
message.Body = messageText;
message.IsBodyHtml = true;
SmtpClient client = new SmtpClient(options.EmailSmtp);
client.UseDefaultCredentials = false;
client.Credentials = new System.Net.NetworkCredential(options.EmailFrom, options.EmailFromPassword);
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.EnableSsl = true;
client.Send(message);
Trace.WriteLine($"Sent email to {options.EmailTo}.");
}
private bool IsKnownRecord(Options options, EventRecord record)
{
AzureTableStorage table = new AzureTableStorage(options.TableStorageConnectionString, options.KnownLogsTableName);
return table.IsKnownLog(record.LevelDisplayName, record.FormatDescription());
}
