public static async Task Run([OrchestrationTrigger] DurableOrchestrationContext monitorContext, ILogger log)
{
MonitorRequest input = monitorContext.GetInput <MonitorRequest>();
if (!monitorContext.IsReplaying)
{
log.LogWarning(
$"Received monitor request. Location: {input?.Location}. Phone: {input?.Phone}."
);
}
VerifyRequest(input);
DateTime endTime = monitorContext.CurrentUtcDateTime.AddHours(1);
if (!monitorContext.IsReplaying)
{
log.LogWarning($"Instantiating monitor for {input.Location}. Expires: {endTime}.");
}
while (monitorContext.CurrentUtcDateTime < endTime)
{
// Check the weather
if (!monitorContext.IsReplaying)
{
log.LogWarning(
$"Checking current weather conditions for {input.Location} at {monitorContext.CurrentUtcDateTime}."
);
}
bool isClear = await monitorContext.CallActivityAsync <bool>("E3_GetIsClear", input.Location);
if (isClear)
{
// It's not raining! Or snowing. Or misting. Tell our user to take advantage of it.
if (!monitorContext.IsReplaying)
{
log.LogWarning($"Detected clear weather for {input.Location}. Notifying {input.Phone}.");
}
await monitorContext.CallActivityAsync("E3_SendGoodWeatherAlert", input.Phone);
break;
}
else
{
// Wait for the next checkpoint
var nextCheckpoint = monitorContext.CurrentUtcDateTime.AddSeconds(10);
if (!monitorContext.IsReplaying)
{
log.LogWarning($"Next check for {input.Location} at {nextCheckpoint}.");
}
await monitorContext.CreateTimer(nextCheckpoint, CancellationToken.None);
}
}
log.LogWarning($"Monitor ending.");
}
private static void VerifyRequest(MonitorRequest request)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request), "An input object is required.");
}
if (request.Location == null)
{
throw new ArgumentNullException(nameof(request.Location), "A location input is required.");
}
if (string.IsNullOrEmpty(request.Phone))
{
throw new ArgumentNullException(nameof(request.Phone), "A phone number input is required.");
}
}
