private static void StartTask(SearchTask task)
{
task.Report("任务开始执行");
task.Report("统计此任务完成程度...");
var finished_instance = task.SearchImageInstances.Where(x => x.ResultInfos != null).ToArray();
task.Report($"目前已完成 {finished_instance.Length} 个任务");
task.Report(finished_instance);
IEnumerable <SearchInstance> list;
//RequestLimit limit = new RequestLimit();
do
{
//limit.CheckLimit();
list = task.SearchImageInstances.Where(x => x.ResultInfos == null);
foreach (var instance in list)
{
if (TrySearch(task.Options, instance))
{
task.Report(instance);
}
else
{
task.Report($"Search image infomation ({instance.ImagePath}) failed,it will try again later...");
}
}
} while (!list.Any());
task.Report($"任务执行完成!");
}
public static void SaveTask(SearchTask search_task)
{
if (string.IsNullOrWhiteSpace(search_task.FilePath))
{
return;
}
var content = JsonConvert.SerializeObject(search_task, Formatting.Indented);
File.WriteAllText(search_task.FilePath, content);
}
public static void BeginTask(SearchTask search_task)
{
Debug.Assert(SearchTask.CurrentSearchTask != search_task, "Not support multi tasks");
if (search_task?.IsProcessing ?? true)
{
return;
}
search_task.IsProcessing = true;
CancellationTokenSource source = new CancellationTokenSource();
search_task.Report("等待任务执行...");
var r = Task.Run(() => StartTask(search_task), source.Token);
search_task.ProcessingTask = (r, source);
SearchTask.CurrentSearchTask = search_task;
}
public static void StopTask(SearchTask search_task)
{
Debug.Assert(SearchTask.CurrentSearchTask != search_task, "Not support multi tasks");
if (!(search_task?.IsProcessing ?? true))
{
return;
}
search_task.IsProcessing = true;
if (!(search_task.ProcessingTask is (Task task, CancellationTokenSource source)))
{
return;
}
source.Cancel();
SaveTask(search_task);
SearchTask.CurrentSearchTask = null;
}