public async Task DispatchAsync(ExecuteWorkflowInstanceRequest request, CancellationToken cancellationToken = default)
{
var workflowInstance = await _workflowInstanceStore.FindByIdAsync(request.WorkflowInstanceId, cancellationToken);
if (workflowInstance == null)
{
_logger.LogWarning("Cannot dispatch a workflow instance ID that does not exist");
return;
}
var workflowBlueprint = await _workflowRegistry.FindAsync(workflowInstance.DefinitionId, VersionOptions.SpecificVersion(workflowInstance.Version), workflowInstance.TenantId, cancellationToken);
if (workflowBlueprint == null)
{
_logger.LogWarning("Workflow instance {WorkflowInstanceId} references workflow blueprint {WorkflowDefinitionId} with version {Version}, but could not be found",
workflowInstance.Id,
workflowInstance.DefinitionId,
workflowInstance.Version);
return;
}
var channel = _workflowChannelOptions.GetChannelOrDefault(workflowBlueprint.Channel);
var queue = ServiceBusOptions.FormatChannelQueueName <ExecuteWorkflowInstanceRequest>(channel);
await _commandSender.SendAsync(request, queue, cancellationToken : cancellationToken);
}
public async Task DispatchAsync(ExecuteWorkflowDefinitionRequest request, CancellationToken cancellationToken = default)
{
var workflowBlueprint = await _workflowRegistry.FindAsync(request.WorkflowDefinitionId, VersionOptions.Published, request.TenantId, cancellationToken);
if (workflowBlueprint == null)
{
_logger.LogWarning("No published version found for workflow blueprint {WorkflowDefinitionId}", request.WorkflowDefinitionId);
return;
}
var channel = _workflowChannelOptions.GetChannelOrDefault(workflowBlueprint.Channel);
var queue = ServiceBusOptions.FormatChannelQueueName <ExecuteWorkflowDefinitionRequest>(channel);
await _commandSender.SendAsync(request, queue, default, cancellationToken);
public static BackgroundJobServerOptions ConfigureForElsaDispatchers(this BackgroundJobServerOptions options, IServiceProvider serviceProvider)
{
var queues = options.Queues.ToHashSet();
// Add default worker queues.
queues.AddRange(new[] { QueueNames.CorrelatedWorkflows });
// Add queue variations based on workflow channels, if any.
var elsaOptions = serviceProvider.GetRequiredService <ElsaOptions>();
var channels = elsaOptions.WorkflowChannelOptions.Channels;
foreach (var channel in channels)
{
queues.Add(ServiceBusOptions.FormatChannelQueueName <ExecuteWorkflowDefinitionRequest>(channel));
queues.Add(ServiceBusOptions.FormatChannelQueueName <ExecuteWorkflowInstanceRequest>(channel));
}
options.Queues = queues.ToArray();
return(options);
}
public CreateSubscriptions(IServiceBusFactory serviceBusFactory, ElsaOptions elsaOptions, IContainerNameAccessor containerNameAccessor, IDistributedLockProvider distributedLockProvider)
{
_serviceBusFactory = serviceBusFactory;
_elsaOptions = elsaOptions;
_containerNameAccessor = containerNameAccessor;
_distributedLockProvider = distributedLockProvider;
_competingMessageTypes = elsaOptions.CompetingMessageTypes.ToList();
_pubSubMessageTypes = elsaOptions.PubSubMessageTypes;
var workflowChannelOptions = elsaOptions.WorkflowChannelOptions;
var workflowChannels = workflowChannelOptions.Channels.ToList();
// For each workflow channel, register a competing message type for workflow definition and workflow instance consumers.
foreach (var workflowChannel in workflowChannels)
{
_competingMessageTypes.Add(new MessageTypeConfig(typeof(ExecuteWorkflowDefinitionRequest), ServiceBusOptions.FormatChannelQueueName("ExecuteWorkflow", workflowChannel)));
_competingMessageTypes.Add(new MessageTypeConfig(typeof(ExecuteWorkflowInstanceRequest), ServiceBusOptions.FormatChannelQueueName("ExecuteWorkflow", workflowChannel)));
}
}