public void ScheduleRabbitMQMessages()
{
foreach (var scheduledMessage in _scheduledMessagesRetriever.GetScheduledMessages(true))
{
if (!scheduledMessage.MessageRuns.Any(mr => !mr.SendAttemptTime.HasValue))
{
DateTimeOffset lastRunTime;
if (scheduledMessage.MessageRuns.Any())
{
lastRunTime = scheduledMessage.MessageRuns.Max(mr => mr.SendAttemptTime.Value);
}
else
{
lastRunTime = scheduledMessage.EffectiveDate;
}
var cronExpression = new Quartz.CronExpression(scheduledMessage.CronExpression);
cronExpression.TimeZone = TimeZoneInfo.Utc;
var nextRunTime = cronExpression.GetTimeAfter(lastRunTime);
if (nextRunTime <= DateTimeOffset.UtcNow)
{
var messageRun = SendMessage(scheduledMessage);
_messageRunLogger.LogMessageRun(messageRun);
}
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="CronExpression"/> class.
/// </summary>
/// <param name="cronExpression">The cron expression.</param>
public CronExpression(string cronExpression)
{
if (Keys.ContainsKey(cronExpression))
{
cronExpression = Keys[cronExpression];
}
cron = new Quartz.CronExpression(cronExpression);
}
internal CronTrigger(string expression, Utils.IDateTimeProvider dateTimeProvider) {
if (expression == null) {
throw new ArgumentNullException("expression");
}
if (dateTimeProvider == null) {
throw new ArgumentNullException("dateTimeProvider");
}
this.cronexpression = new Quartz.CronExpression(expression);
this.dateTimeProvider = dateTimeProvider;
}
/// <summary>
/// Gets the array of times.
/// </summary>
/// <param name="cronExpression">The cron expression.</param>
/// <returns>IEnumerable<System.Nullable<DateTimeOffset>>.</returns>
/// <exception cref="ArgumentException">cronExpression</exception>
public static IEnumerable <DateTimeOffset?> GetArrayOfTimes(string cronExpression)
{
if (string.IsNullOrEmpty(cronExpression))
{
throw new ArgumentException("cronExpression");
}
var result = new List <DateTimeOffset?>();
var jobSchedules = new List <DateTimeOffset>();
var quartzHelper = new Quartz.CronExpression(cronExpression);
var dt = DateTimeOffset.Now;
var numberOfDays = 0;
var numberOfSchedules = 30;
var restrictToDays = 20;
while (numberOfDays <= restrictToDays)
{
var nextScheduledJob = quartzHelper.GetNextValidTimeAfter(dt);
if (nextScheduledJob != null)
{
dt = nextScheduledJob.Value;
if (result.Count != 0)
{
var lastDate = result.Last();
var diff = dt.Day - lastDate.Value.Day;
if (diff >= 1)
{
numberOfDays++;
}
}
result.Add(nextScheduledJob.GetValueOrDefault().ToLocalTime());
if (result.Count() == numberOfSchedules)
{
break;
}
}
}
return(result);
}
public JsonResult CalcRunTime(string CronExpression)
{
Quartz.CronExpression e = new Quartz.CronExpression(CronExpression);
List <string> results = new List <string>();
DateTimeOffset dto = DateTimeOffset.Now;
DateTimeOffset?lastfire = dto;
for (int i = 0; i < 5 && lastfire != null; i++)
{
lastfire = e.GetNextValidTimeAfter(lastfire.Value);
if (lastfire != null)
{
results.Add(lastfire.Value.ToLocalTime().ToString("yyyy/MM/dd HH:mm:ss"));
}
}
results = results.Take(5).ToList();
while (results.Count < 5)
{
results.Add("");
}
return(Json(results, JsonRequestBehavior.AllowGet));
}
/// <summary>
/// Tests this instance.
/// </summary>
public static void Create()
{
const string file = ".\\Cron Schedule Helper.md";
StringBuilder sb = new StringBuilder();
foreach (var p in GetValues())
{
DateTime now = DateTime.Now.ToUniversalTime();
try
{
Quartz.CronExpression expr = new Quartz.CronExpression(p);
var value = expr.GetNextValidTimeAfter(now);
sb.AppendLine(p.PadRight(32) + "\t" +
ExpressionDescriptor.GetDescription(p));
}
catch (Exception)
{
continue;
}
}
File.WriteAllText(file, sb.ToString());
}
