public async Task <IActionResult> SagaStatusChecker(
[HttpTrigger(AuthorizationLevel.Function, methods: "get", Route = "saga/state/{id}")] HttpRequestMessage request,
string id,
[DurableClient] IDurableOrchestrationClient client,
[CosmosDB(
databaseName: @"%CosmosDbDatabaseName%",
collectionName: @"%CosmosDbOrchestratorCollectionName%",
ConnectionStringSetting = @"CosmosDbConnectionString")] IDocumentClient documentClient,
ILogger log)
{
Uri collectionUri = UriUtils.CreateTransactionCollectionUri();
TransactionItem item = documentClient
.CreateDocumentQuery <TransactionItem>(collectionUri)
.ToList()
.Where(document => document.Id == id)
.FirstOrDefault();
if (item == null)
{
return(new NotFoundObjectResult($@"Saga with transaction ID = {id} not found."));
}
HttpResponseMessage clientResponse = client.CreateCheckStatusResponse(request, id);
var durableOrchestratorFactory = new DurableClientFactory(httpClient, log);
var orchestratorRuntimeStatus = await durableOrchestratorFactory.GetRuntimeStatusAsync(clientResponse);
var response = new SagaStatusResponse(item.State.ToString(), orchestratorRuntimeStatus);
return(new OkObjectResult(response));
}
public static async Task <TransactionItem> SagaOrchestratorActivity(
[ActivityTrigger] TransactionItem item,
[CosmosDB(
databaseName: @"%CosmosDbDatabaseName%",
collectionName: @"%CosmosDbOrchestratorCollectionName%",
ConnectionStringSetting = @"CosmosDbConnectionString")]
IAsyncCollector <TransactionItem> documentCollector,
[CosmosDB(
databaseName: @"%CosmosDbDatabaseName%",
collectionName: @"%CosmosDbOrchestratorCollectionName%",
ConnectionStringSetting = @"CosmosDbConnectionString")] IDocumentClient client)
{
if (item.State == SagaState.Pending.ToString())
{
await documentCollector.AddAsync(item);
return(item);
}
Uri collectionUri = UriUtils.CreateTransactionCollectionUri();
var document = client
.CreateDocumentQuery(collectionUri)
.Where(t => t.Id == item.Id)
.AsEnumerable()
.FirstOrDefault();
document.SetPropertyValue("state", item.State);
await client.ReplaceDocumentAsync(document);
return(item);
}