public Task <bool> IsConditionMet(ChatModel chatModel, ChatFlowStep chatFlowStep, Chat_ChildRef childRef)
{
if (!initialized)
{
throw new ApplicationException("ChatScriptManager is not initialized. Call Initialize()");
}
if (String.IsNullOrEmpty(childRef.Condition))
{
return(Task.FromResult(true));
}
ChatVariables globalFields = chatModel.CurrentState.GlobalAnswers;
ChatVariables flowFields = chatModel.CurrentState.GetFlowAnswers(chatFlowStep.Flow);
if (AwsUtilityMethods.IsRunningOnAWS)
{
AWSXRayRecorder.Instance.BeginSubsegment("Script: Evaluate Condition");
}
try
{
//logger.DebugFormat("Script: IsConditionMet Start. '{0}'", childRef.Condition);
return(Task.FromResult(
RunScript <bool>((engine, globalValues, flowValues) =>
{
var result = engine.Evaluate(childRef.Condition);
if (!(result is bool))
{
logger.WarnFormat("Script: IsCondition did not return true/false. Evaluating with Javascript rules. '{0}', result: '{1}'", childRef.Condition, result);
}
return UtilityMethods.ParseJavascriptBoolean(result);
}, globalFields, flowFields, null)
));
}
catch (Exception ex)
{
if (AwsUtilityMethods.IsRunningOnAWS)
{
AWSXRayRecorder.Instance.AddException(ex);
}
logger.ErrorFormat("Script: IsConditionMet Error. '{0}' '{1}'", childRef.Condition, ex.Message);
}
finally
{
if (AwsUtilityMethods.IsRunningOnAWS)
{
AWSXRayRecorder.Instance.EndSubsegment();
}
}
return(Task.FromResult(false));
}
private void ConvertFieldsToNative(ChatVariables fields, dynamic values, bool global)
{
ExpandoObject eo = values;
foreach (var item in eo)
{
if (global && IsVariableControlled(item.Key))
{
continue;
}
fields[item.Key] = item.Value?.FromScriptValue();
}
}
public Task <ErrorHandlerResult> ProcessErrorHandler(ChatModel chatModel, ChatFlowStep chatFlowStep)
{
if (!initialized)
{
throw new ApplicationException("ChatScriptManager is not initialized. Call Initialize()");
}
string script = chatFlowStep.ErrorHandler;
ChatVariables globalFields = chatModel.CurrentState.GlobalAnswers;
ChatVariables flowFields = chatModel.CurrentState.GetFlowAnswers(chatFlowStep.Flow);
if (AwsUtilityMethods.IsRunningOnAWS)
{
AWSXRayRecorder.Instance.BeginSubsegment("Script: Process Parser Error Handler");
}
try
{
return(Task.FromResult(
RunScript <ErrorHandlerResult>((engine, globalValues, flowValues) =>
{
dynamic result = engine.Evaluate(script);
if (result == null)
{
return null;
}
ConvertFieldsToNative(globalFields, globalValues, true);
ConvertFieldsToNative(flowFields, flowValues, false);
return ScriptHelpers.ConvertToType <ErrorHandlerResult>(result);
}, globalFields, flowFields, null)
));
}
catch (Exception ex)
{
if (AwsUtilityMethods.IsRunningOnAWS)
{
AWSXRayRecorder.Instance.AddException(ex);
}
logger.ErrorFormat("Script: Process Parser Error Handler Error. '{0}'", ex.Message);
throw;
}
finally
{
if (AwsUtilityMethods.IsRunningOnAWS)
{
AWSXRayRecorder.Instance.EndSubsegment();
}
}
}
private TResult RunScript <TResult>(Func <V8ScriptEngine, dynamic, dynamic, TResult> function, ChatVariables globalFields, ChatVariables flowFields, object functionParams)
{
using (var context = v8Runtime.CreateScriptEngine())
{
dynamic globalValues = globalFields.FieldAnswers.ToDynamic(context);
dynamic flowValues = flowFields.FieldAnswers.ToDynamic(context);
ScriptHost.ScriptContext = context;
ConfigureScriptEngine(context, globalValues, flowValues, functionParams);
TResult result = function(context, globalValues, flowValues);
//if (logger.IsDebugEnabled)
// logger.DebugFormat("Script: Stats: {0}", JsonConvert.SerializeObject(context.GetRuntimeHeapInfo()));
return(result);
}
}
public Task <object> ProcessActions(ChatModel chatModel, ChatFlowStep chatFlowStep, object functionParams, bool expectResult)
{
if (!initialized)
{
throw new ApplicationException("ChatScriptManager is not initialized. Call Initialize()");
}
ChatVariables globalFields = chatModel.CurrentState.GlobalAnswers;
ChatVariables flowFields = chatModel.CurrentState.GetFlowAnswers(chatFlowStep.Flow);
ScriptHost.ClearProperties();
if (chatFlowStep.Actions == null)
{
return(Task.FromResult <object>(null));
}
//logger.DebugFormat("Script: ProcessActions Start JScriptEngine. {0}:{1}", chatFlowStep.Flow, chatFlowStep.Id);
object result = null;
if (AwsUtilityMethods.IsRunningOnAWS)
{
AWSXRayRecorder.Instance.BeginSubsegment("Script: ProcessActions");
}
try
{
return(Task.FromResult(
RunScript <object>((engine, globalValues, flowValues) =>
{
// Performance optimization for ClearScript.
// If we dont want the result, we dont need to marshal the result back.
chatFlowStep.Actions.ForEach(action => result = RunAction(engine, action, expectResult));
ConvertFieldsToNative(globalFields, globalValues, true);
ConvertFieldsToNative(flowFields, flowValues, false);
return result;
}, globalFields, flowFields, functionParams)
));
}
catch (Exception ex)
{
if (AwsUtilityMethods.IsRunningOnAWS)
{
AWSXRayRecorder.Instance.AddException(ex);
}
if (ex is Microsoft.ClearScript.ScriptEngineException scriptEx)
{
logger.ErrorFormat("Script: ProcessActions Error. '{0}'", scriptEx.ErrorDetails);
throw new ScriptException(scriptEx.ErrorDetails, ex, chatFlowStep.Flow, chatFlowStep.Id);
}
logger.ErrorFormat("Script: ProcessActions Error. '{0}'", ex.Message);
throw;
}
finally
{
if (AwsUtilityMethods.IsRunningOnAWS)
{
AWSXRayRecorder.Instance.EndSubsegment();
}
}
}
private void UpdateV1State(ChatState state, Chat_ParseField chatParseField, ParseResult result, ChatVariables variables)
{
DateTime date = (DateTime)result.Answer;
int offset = state.GetUserTimeZoneOffset();
variables[chatParseField.FieldName] = date.AddHours(offset).ToShortDateString();
variables[chatParseField.FieldName + "_Date"] = date;
CheckIfAnswerHasPII(state, chatParseField, date.ToString(), PIIMask);
}
