public Task <object?> EvaluateAsync(
string expression,
Type returnType,
ActivityExecutionContext context,
CancellationToken cancellationToken)
{
var result = context.GetVariable(expression);
return(Task.FromResult(result));
}
private static void ThrowErrorIfFirstRun(ActivityExecutionContext context)
{
var hasExecuted = context.GetVariable <bool>("HasExecuted");
if (!hasExecuted)
{
context.SetVariable("HasExecuted", true);
throw new Exception("Something bad happened. Please retry workflow.");
}
}
public Task <object?> EvaluateAsync(string expression, Type returnType, ActivityExecutionContext context, CancellationToken cancellationToken)
{
var matches = rx.Matches(expression);
foreach (Match match in matches)
{
var variable = match.Groups[1].Value;
string replacement = match.Groups[0].Value;
switch (variable)
{
case "correlationId":
replacement = $"'{context.WorkflowExecutionContext.CorrelationId}'";
break;
case "workflowDefinitionId":
replacement = $"'{context.WorkflowInstance.DefinitionId}'";
break;
case "workflowDefinitionVersion":
replacement = $"{context.WorkflowInstance.DefinitionVersionId}";
break;
case "workflowInstanceId":
replacement = $"'{context.WorkflowInstance.Id}'";
break;
default:
if (context.HasVariable(variable))
{
var value = context.GetVariable(variable);
if (value is not null)
{
replacement = IsNumber(value)? $"{value}" : $"'{value}'";
}
else
{
replacement = "NULL";
}
}
break;
}
expression = expression.Replace(match.Groups[0].Value, replacement);
}
return(Task.FromResult(expression.Parse(returnType)));
}
/// <summary>
/// Returns the control ID of the active call session in the workflow if the specified call control ID is null or empty.
/// </summary>
public static string GetFromNumber(this ActivityExecutionContext context, string?fromNumber)
{
if (!string.IsNullOrWhiteSpace(fromNumber))
{
return(fromNumber);
}
fromNumber = context.GetVariable <string>(FromNumberVariableName);
if (!string.IsNullOrWhiteSpace(fromNumber))
{
return(fromNumber);
}
throw new MissingFromNumberException("No From Number specified");
}
/// <summary>
/// Returns the control ID of the active call session in the workflow if the specified call control ID is null or empty.
/// </summary>
public static string GetCallControlId(this ActivityExecutionContext context, string?callControlId)
{
if (!string.IsNullOrWhiteSpace(callControlId))
{
return(callControlId);
}
callControlId = context.GetVariable <string>(CallControlIdVariableName);
if (!string.IsNullOrWhiteSpace(callControlId))
{
return(callControlId);
}
throw new MissingCallControlIdException("No Call Control ID specified");
}
private int GetCurrentCount(ActivityExecutionContext context) => context.GetVariable <int>("CurrentCount");
public static string?GetCallerNumber(this ActivityExecutionContext context) => context.GetVariable <string>(CallerNumberVariableName);
private int GetCounter(ActivityExecutionContext context) => context.GetVariable <int>(CounterVariableName);