static Task DeferTask(TaskDefinition taskDefinition, IPipelineContext context)
{
var options = new SendOptions();
options.DelayDeliveryWith(taskDefinition.Every);
options.RouteToThisEndpoint();
return context.Send(new ScheduledTask
{
TaskId = taskDefinition.Id,
Name = taskDefinition.Name,
Every = taskDefinition.Every
}, options);
}
/// <summary>
/// Schedules a task to be executed repeatedly in a given interval.
/// </summary>
/// <param name="session">The session which allows you to perform message operation.</param>
/// <param name="timeSpan">The interval to repeatedly execute the <paramref name="task" />.</param>
/// <param name="task">The async function to execute.</param>
/// <param name="name">The name to used for logging the task being executed.</param>
public static Task ScheduleEvery(this IMessageSession session, TimeSpan timeSpan, string name, Func<IPipelineContext, Task> task)
{
Guard.AgainstNull(nameof(task), task);
Guard.AgainstNullAndEmpty(nameof(name), name);
Guard.AgainstNegativeAndZero(nameof(timeSpan), timeSpan);
var taskDefinition = new TaskDefinition
{
Every = timeSpan,
Name = name,
Task = task
};
return Schedule(session, taskDefinition);
}
static Task Schedule(IMessageSession session, TaskDefinition taskDefinition)
{
logger.DebugFormat("Task '{0}' (with id {1}) scheduled with timeSpan {2}", taskDefinition.Name, taskDefinition.Id, taskDefinition.Every);
var options = new SendOptions();
options.DelayDeliveryWith(taskDefinition.Every);
options.RouteToThisEndpoint();
options.Context.GetOrCreate<ScheduleBehavior.State>().TaskDefinition = taskDefinition;
var scheduledTask = new ScheduledTask
{
TaskId = taskDefinition.Id,
Name = taskDefinition.Name,
Every = taskDefinition.Every
};
return session.Send(scheduledTask, options);
}
static async Task ExecuteTask(TaskDefinition taskDefinition, IPipelineContext context)
{
logger.InfoFormat("Start executing scheduled task named '{0}'.", taskDefinition.Name);
var sw = new Stopwatch();
sw.Start();
try
{
await taskDefinition.Task(context).ConfigureAwait(false);
logger.InfoFormat("Scheduled task '{0}' run for {1}", taskDefinition.Name, sw.Elapsed);
}
catch (Exception ex)
{
logger.Error($"Failed to execute scheduled task '{taskDefinition.Name}'.", ex);
}
finally
{
sw.Stop();
}
}
public void Schedule(TaskDefinition taskDefinition)
{
scheduledTasks[taskDefinition.Id] = taskDefinition;
}