public async Task <object> OrchestratorAsync(
[HttpTrigger("get", "post", "delete")] HttpRequest request,
[DurableClient] IDurableOrchestrationClient durableOrchestrationClient)
{
var method = request.Method.ToLower();
if (method == "get")
{
return(await durableOrchestrationClient.GetInstancesAsync());
}
if (method == "delete")
{
await Task.WhenAll(
from i in await durableOrchestrationClient.GetInstancesAsync()
where i.RuntimeStatus == OrchestrationRuntimeStatus.Running
select durableOrchestrationClient.TerminateAsync(i.InstanceId, "terminate-all")
);
return(await Task.WhenAll(
from i in await durableOrchestrationClient.GetInstancesAsync()
where i.RuntimeStatus != OrchestrationRuntimeStatus.Running
select durableOrchestrationClient.PurgeInstanceHistoryAsync(i.InstanceId)
));
}
var body = await request.Body.ReadAsync();
var functionContext = body.FromJson <FunctionContext>() ?? new FunctionContext();
functionContext.BaseUrl = new Uri(request.GetDisplayUrl()).GetLeftPart(UriPartial.Authority);
functionContext.MethodSpecification = functionContext.MethodSpecification ?? request.Query["$method"];
functionContext.Await = functionContext.Await || ((string)request.Query["$await"]).ChangeType <bool>();
functionContext.CallbackUrl = functionContext.CallbackUrl ?? request.Query["$callbackUrl"];
functionContext.Arguments = functionContext.Arguments ?? JToken.FromObject((
from q in request.Query
where !q.Key.StartsWith("$")
select(q.Key, Value: q.Value.FirstOrDefault() as object)
).ToDictionary());
if (functionContext.Await)
{
return(await functionContext.InvokeAsync(this.componentContext));
}
var instanceId = await durableOrchestrationClient.StartNewAsync("orchestration", functionContext);
return(durableOrchestrationClient.CreateHttpManagementPayload(instanceId) as object);
}