public async Task SendEmailAsync(IList <string> recepients, string subject, string body, CancellationToken cancellationToken = default)
{
if (!recepients.Any())
{
return;
}
using var smtpClient = BuildSmtpClient();
_logger.LogInfo($"Sending email to:");
foreach (var to in recepients)
{
try
{
_logger.LogInfo(to);
var mailMessage = GenerateMailMessage(to, subject, body);
if (_appSettings.SendEmails)
{
await smtpClient.SendMailAsync(mailMessage);
}
else
{
_logger.LogInfo($"Did not send email to {to} due to config settings");
}
}
catch (Exception ex)
{
_logger.LogError($"Failed to send email to: {to}");
_logger.LogError(ex.ToString());
continue;
}
}
_logger.LogInfo("Emails processed!");
}
private void LogError(Task task)
{
foreach (var ex in task.Exception.Flatten().InnerExceptions)
{
_logger.LogError(ex.ToString());
}
}
public CircuitBreak(int exceptionsAllowedBeforeBreaking, TimeSpan durationOfBreak, int reTries, Func <Exception, bool> exceptionPredicate)
{
logger = ObjectContainer.Resolve <Logging.ILogger>();
circuitBreakerPolicy = Policy
.Handle(exceptionPredicate)
.CircuitBreaker(
exceptionsAllowedBeforeBreaking: exceptionsAllowedBeforeBreaking,
durationOfBreak: durationOfBreak,
onBreak: (ex, breakDelay) =>
{
logger.LogError(".Breaker logging: Breaking the circuit for " + breakDelay.TotalMilliseconds + "ms!", ex);
},
onReset: () =>
{
logger.LogDebug(".Breaker logging: Call ok! Closed the circuit again.");
},
onHalfOpen: () =>
{
logger.LogDebug(".Breaker logging: Half-open; next call is a trial.");
});
retryPolicy = Policy
.Handle(exceptionPredicate)
.Retry(reTries);
}