EvilBeaver/OneScript: Исполняющая среда скриптов на языке 1С

src/OneScript.StandardLibrary/Tasks/BackgroundTask.cs
122 строки4 KB
Nikita Fedkin
Документация на таймаут в ожидании фонового задания
12 янв 2023, 10:32
12 янв 2023, 10:32afd8c52
/*----------------------------------------------------------
This Source Code Form is subject to the terms of the
Mozilla Public License, v.2.0. If a copy of the MPL
was not distributed with this file, You can obtain one
at http://mozilla.org/MPL/2.0/.
----------------------------------------------------------*/

using System.Linq;
using System.Threading.Tasks;
using OneScript.Commons;
using OneScript.Contexts;
using OneScript.Language;
using OneScript.StandardLibrary.Collections;
using ScriptEngine.Machine;
using ScriptEngine.Machine.Contexts;

namespace OneScript.StandardLibrary.Tasks
{
    [ContextClass("ФоновоеЗадание", "BackgroundTask")]
    public class BackgroundTask : AutoContext<BackgroundTask>
    {
        private readonly BslMethodInfo _method;
        private readonly int _methIndex;
        private Task _workerTask;
        private int _taskId;
        
        public BackgroundTask(IRuntimeContextInstance target, string methodName, ArrayImpl parameters = default)
        {
            Target = target;
            MethodName = methodName;
            if(parameters != default)
                Parameters = new ArrayImpl(parameters);
            
            Identifier = new GuidWrapper();
            
            _methIndex = Target.GetMethodNumber(MethodName);
            _method = Target.GetMethodInfo(_methIndex);
        }

        public Task WorkerTask
        {
            get => _workerTask;
            set
            {
                _workerTask = value;
                _taskId = _workerTask.Id;
            }
        }

        public int TaskId => _taskId;

        [ContextProperty("УникальныйИдентификатор","UUID")]
        public GuidWrapper Identifier { get; private set; }
        
        [ContextProperty("ИмяМетода","MethodName")]
        public string MethodName { get; private set; }
        
        [ContextProperty("Объект","Object")]
        public IRuntimeContextInstance Target { get; private set; }

        [ContextProperty("Состояние", "State")]
        public TaskStateEnum State { get; private set; }

        [ContextProperty("Параметры", "Parameters")]
        public IValue Parameters { get; private set; } = ValueFactory.Create();

        [ContextProperty("Результат", "Result")]
        public IValue Result { get; private set; } = ValueFactory.Create();

        [ContextProperty("ИнформацияОбОшибке", "ExceptionInfo")]
        public ExceptionInfoContext ExceptionInfo { get; private set; }

        /// <summary>
        /// Ждать завершения задания указанное число миллисекунд
        /// </summary>
        /// <param name="timeout">Таймаут в миллисекундах. Если ноль - ждать вечно</param>
        /// <returns>Истина - дождались завершения. Ложь - сработал таймаут</returns>
        [ContextMethod("ОжидатьЗавершения", "Wait")]
        public bool Wait(int timeout = 0)
        {
            timeout = BackgroundTasksManager.ConvertTimeout(timeout);
            
            return WorkerTask.Wait(timeout);
        }
        
        public void ExecuteOnCurrentThread()
        {
            if (State != TaskStateEnum.NotRunned)
                throw new RuntimeException(Locale.NStr("ru = 'Неверное состояние задачи';en = 'Incorrect task status'"));

            var parameters = Parameters is ArrayImpl array ?
                array.ToArray() :
                new IValue[0];

            try
            {
                State = TaskStateEnum.Running;
                if (_method.IsFunction())
                {
                    Target.CallAsFunction(_methIndex, parameters, out var result);
                    Result = result;
                }
                else
                {
                    Target.CallAsProcedure(_methIndex, parameters);
                }

                State = TaskStateEnum.Completed;
            }
            catch (ScriptException exception)
            {
                State = TaskStateEnum.CompletedWithErrors;
                ExceptionInfo = new ExceptionInfoContext(exception);
            }
            catch (BslCoreException exception)
            {
                State = TaskStateEnum.CompletedWithErrors;
                ExceptionInfo = new ExceptionInfoContext(new ScriptException(exception));
            }
        }
    }
}