public async Task PurgesInstancesByStatus(OrchestrationStateTimeRangeFilterType filterType)
{
DateTime startTime = DateTime.UtcNow;
var events = new ConcurrentDictionary <string, TaskCompletionSource <bool> >();
// Waits for an external event and then either completes or fails depending on that event
IReadOnlyList <TestInstance <string> > instances = await this.testService.RunOrchestrations(
count : 30, // ideally some multiple of 3
instanceIdGenerator : i => $"InstanceToPurge_{i:00}",
inputGenerator : i => $"Hello, world {i}",
orchestrationName : "SimpleDelay",
version : string.Empty,
implementation : async(ctx, input) =>
{
var tcs = new TaskCompletionSource <bool>();
events[ctx.OrchestrationInstance.InstanceId] = tcs;
bool shouldFail = await tcs.Task;
if (shouldFail)
{
throw new Exception("Kah-BOOOOOM!!!");
}
return(shouldFail);
},
onEvent : (ctx, name, value) =>
{
events[ctx.OrchestrationInstance.InstanceId].SetResult(bool.Parse(value));
});
await Task.WhenAll(instances.Select(instance => instance.WaitForStart()));
// Try to purge the instance and check that it still exists
await this.testService.PurgeAsync(startTime, filterType);
foreach (TestInstance <string> instance in instances)
{
OrchestrationState runningState = await instance.GetStateAsync();
Assert.Equal(OrchestrationStatus.Running, runningState.OrchestrationStatus);
}
TimeSpan timeout = TimeSpan.FromSeconds(30);
// We want to test a mix of completed, failed, and terminated instances to make sure they are all handled correctly.
var tasks = new List <Task>();
for (int i = 0; i < instances.Count; i++)
{
int index = i;
tasks.Add(Task.Run(async() =>
{
TestInstance <string> instance = instances[index];
if (index % 3 == 0)
{
// Complete the instance
await instance.RaiseEventAsync("Action", false);
await instance.WaitForCompletion(timeout, OrchestrationStatus.Completed);
}
else if (index % 3 == 1)
{
// Fail the instance
await instance.RaiseEventAsync("Action", true);
await instance.WaitForCompletion(timeout, OrchestrationStatus.Failed);
}
else
{
// Terminate the instance
await instance.TerminateAsync("Terminated!");
await instance.WaitForCompletion(timeout, OrchestrationStatus.Terminated);
}
}));
}
// Wait for all instances to transition into their final state
await Task.WhenAll(tasks);
// This time-based purge should remove all the instances
await this.testService.PurgeAsync(startTime, filterType);
foreach (TestInstance <string> instance in instances)
{
OrchestrationState purgedState = await instance.GetStateAsync();
Assert.Null(purgedState);
}
// One more purge, just to make sure there are no failures when there is nothing left to purge
await this.testService.PurgeAsync(startTime, filterType);
}