protected override async Task <ActivityExecutionResult> OnExecuteAsync(HttpResponseAction activity, WorkflowExecutionContext workflowContext, CancellationToken cancellationToken)
{
var response = httpContextAccessor.HttpContext.Response;
response.StatusCode = (int)activity.StatusCode;
response.ContentType = await expressionEvaluator.EvaluateAsync(activity.ContentType, workflowContext, cancellationToken);
var headersText = await expressionEvaluator.EvaluateAsync(activity.ResponseHeaders, workflowContext, cancellationToken);
if (headersText != null)
{
var headersQuery =
from line in Regex.Split(headersText, "\\n", RegexOptions.Multiline)
let pair = line.Split(':', '=')
select new KeyValuePair <string, string>(pair[0], pair[1]);
foreach (var header in headersQuery)
{
var headerValueExpression = new WorkflowExpression <string>(activity.ResponseHeaders.Syntax, header.Value);
response.Headers[header.Key] = await expressionEvaluator.EvaluateAsync(headerValueExpression, workflowContext, cancellationToken);
}
}
var bodyText = await expressionEvaluator.EvaluateAsync(activity.Body, workflowContext, cancellationToken);
if (!string.IsNullOrWhiteSpace(bodyText))
{
await response.WriteAsync(bodyText, cancellationToken);
}
return(TriggerEndpoint("Done"));
}
protected override async Task <ActivityExecutionResult> OnExecuteAsync(SetVariable activity, WorkflowExecutionContext workflowContext, CancellationToken cancellationToken)
{
var value = await expressionEvaluator.EvaluateAsync(activity.ValueExpression, workflowContext, cancellationToken);
workflowContext.CurrentScope.SetVariable(activity.VariableName, value);
return(TriggerEndpoint("Done"));
}
public static async Task <T> EvaluateAsync <T>(
this IWorkflowExpressionEvaluator evaluator,
IWorkflowExpression <T> expression,
WorkflowExecutionContext workflowExecutionContext,
CancellationToken cancellationToken = default)
{
return((T)await evaluator.EvaluateAsync(expression, typeof(T), workflowExecutionContext, cancellationToken));
}
protected override async Task <ActivityExecutionResult> OnExecuteAsync(WriteLine activity, WorkflowExecutionContext workflowContext, CancellationToken cancellationToken)
{
var text = await evaluator.EvaluateAsync(activity.TextExpression, workflowContext, cancellationToken);
await output.WriteLineAsync(text);
return(TriggerEndpoint("Done"));
}
protected override async Task <ActivityExecutionResult> OnExecuteAsync(IfElse activity, WorkflowExecutionContext workflowContext, CancellationToken cancellationToken)
{
var result = await expressionEvaluator.EvaluateAsync(activity.ConditionExpression, workflowContext, cancellationToken);
return(TriggerEndpoint(result ? "True" : "False"));
}