【m】框架大更新

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearAllCacheBundleFilesOperation.cs

@@ -0,0 +1,67 @@
+using System.Collections;
+using System.Collections.Generic;
+
+namespace YooAsset
+{
+    internal sealed class ClearAllCacheBundleFilesOperation : FSClearCacheFilesOperation
+    {
+        private enum ESteps
+        {
+            None,
+            GetAllCacheFiles,
+            ClearAllCacheFiles,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private List<string> _allBundleGUIDs;
+        private int _fileTotalCount = 0;
+        private ESteps _steps = ESteps.None;
+
+
+        internal ClearAllCacheBundleFilesOperation(DefaultCacheFileSystem fileSystem)
+        {
+            _fileSystem = fileSystem;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.GetAllCacheFiles;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.GetAllCacheFiles)
+            {
+                _allBundleGUIDs = _fileSystem.GetAllCachedBundleGUIDs();
+                _fileTotalCount = _allBundleGUIDs.Count;
+                _steps = ESteps.ClearAllCacheFiles;
+                YooLogger.Log($"Found all cache files count : {_fileTotalCount}");
+            }
+
+            if (_steps == ESteps.ClearAllCacheFiles)
+            {
+                for (int i = _allBundleGUIDs.Count - 1; i >= 0; i--)
+                {
+                    string bundleGUID = _allBundleGUIDs[i];
+                    _fileSystem.DeleteCacheBundleFile(bundleGUID);
+                    _allBundleGUIDs.RemoveAt(i);
+                    if (OperationSystem.IsBusy)
+                        break;
+                }
+
+                if (_fileTotalCount == 0)
+                    Progress = 1.0f;
+                else
+                    Progress = 1.0f - (_allBundleGUIDs.Count / _fileTotalCount);
+
+                if (_allBundleGUIDs.Count == 0)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+            }
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearAllCacheBundleFilesOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 73c60cdd885dd3e4f8e4d106e699856e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearAllCacheManifestFilesOperation.cs

@@ -0,0 +1,63 @@
+using System;
+using System.IO;
+
+namespace YooAsset
+{
+    internal sealed class ClearAllCacheManifestFilesOperation : FSClearCacheFilesOperation
+    {
+        private enum ESteps
+        {
+            None,
+            ClearAllCacheFiles,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private ESteps _steps = ESteps.None;
+
+
+        internal ClearAllCacheManifestFilesOperation(DefaultCacheFileSystem fileSystem)
+        {
+            _fileSystem = fileSystem;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.ClearAllCacheFiles;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.ClearAllCacheFiles)
+            {
+                try
+                {
+                    // 注意：如果正在下载资源清单，会有几率触发异常！
+                    string directoryRoot = _fileSystem.GetCacheManifestFilesRoot();
+                    DirectoryInfo directoryInfo = new DirectoryInfo(directoryRoot);
+                    if (directoryInfo.Exists)
+                    {
+                        foreach (FileInfo fileInfo in directoryInfo.GetFiles())
+                        {
+                            string fileName = fileInfo.Name;
+                            if (fileName == DefaultCacheFileSystemDefine.AppFootPrintFileName)
+                                continue;
+
+                            fileInfo.Delete();
+                        }
+                    }
+
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+                catch (Exception ex)
+                {
+                    _steps = ESteps.Done;
+                    Error = ex.Message;
+                    Status = EOperationStatus.Failed;
+                }
+            }
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearAllCacheManifestFilesOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 532cffec88b27e24eb3ad471607738f9
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearCacheBundleFilesByTagsOperaiton.cs

@@ -0,0 +1,135 @@
+using System.Collections.Generic;
+
+namespace YooAsset
+{
+    internal class ClearCacheBundleFilesByTagsOperaiton : FSClearCacheFilesOperation
+    {
+        private enum ESteps
+        {
+            None,
+            CheckManifest,
+            CheckArgs,
+            GetClearCacheFiles,
+            ClearFilterCacheFiles,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private readonly PackageManifest _manifest;
+        private readonly object _clearParam;
+        private string[] _tags;
+        private List<string> _clearBundleGUIDs;
+        private int _clearFileTotalCount = 0;
+        private ESteps _steps = ESteps.None;
+
+        internal ClearCacheBundleFilesByTagsOperaiton(DefaultCacheFileSystem fileSystem, PackageManifest manifest, object clearParam)
+        {
+            _fileSystem = fileSystem;
+            _manifest = manifest;
+            _clearParam = clearParam;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.CheckManifest;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.CheckManifest)
+            {
+                if (_manifest == null)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = "Can not found active package manifest !";
+                }
+                else
+                {
+                    _steps = ESteps.CheckArgs;
+                }
+            }
+
+            if (_steps == ESteps.CheckArgs)
+            {
+                if (_clearParam == null)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = "Clear param is null !";
+                    return;
+                }
+
+                if (_clearParam is string)
+                {
+                    _tags = new string[] { _clearParam as string };
+                }
+                else if (_clearParam is List<string>)
+                {
+                    var tempList = _clearParam as List<string>;
+                    _tags = tempList.ToArray();
+                }
+                else if (_clearParam is string[])
+                {
+                    _tags = _clearParam as string[];
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = $"Invalid clear param : {_clearParam.GetType().FullName}";
+                    return;
+                }
+
+                _steps = ESteps.GetClearCacheFiles;
+            }
+
+            if (_steps == ESteps.GetClearCacheFiles)
+            {
+                _clearBundleGUIDs = GetBundleGUIDsByTag();
+                _clearFileTotalCount = _clearBundleGUIDs.Count;
+                _steps = ESteps.ClearFilterCacheFiles;
+            }
+
+            if (_steps == ESteps.ClearFilterCacheFiles)
+            {
+                for (int i = _clearBundleGUIDs.Count - 1; i >= 0; i--)
+                {
+                    string bundleGUID = _clearBundleGUIDs[i];
+                    _fileSystem.DeleteCacheBundleFile(bundleGUID);
+                    _clearBundleGUIDs.RemoveAt(i);
+                    if (OperationSystem.IsBusy)
+                        break;
+                }
+
+                if (_clearFileTotalCount == 0)
+                    Progress = 1.0f;
+                else
+                    Progress = 1.0f - (_clearBundleGUIDs.Count / _clearFileTotalCount);
+
+                if (_clearBundleGUIDs.Count == 0)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+            }
+        }
+        private List<string> GetBundleGUIDsByTag()
+        {
+            var allBundleGUIDs = _fileSystem.GetAllCachedBundleGUIDs();
+            List<string> result = new List<string>(allBundleGUIDs.Count);
+            foreach (var bundleGUID in allBundleGUIDs)
+            {
+                if (_manifest.TryGetPackageBundleByBundleGUID(bundleGUID, out PackageBundle bundle))
+                {
+                    if (bundle.HasTag(_tags))
+                    {
+                        result.Add(bundleGUID);
+                    }
+                }
+            }
+            return result;
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearCacheBundleFilesByTagsOperaiton.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 170eae809f785ed45bc2b043a081795a
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearUnusedCacheBundleFilesOperation.cs

@@ -0,0 +1,98 @@
+using System.Collections;
+using System.Collections.Generic;
+
+namespace YooAsset
+{
+    internal sealed class ClearUnusedCacheBundleFilesOperation : FSClearCacheFilesOperation
+    {
+        private enum ESteps
+        {
+            None,
+            CheckManifest,
+            GetUnusedCacheFiles,
+            ClearUnusedCacheFiles,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private readonly PackageManifest _manifest;
+        private List<string> _unusedBundleGUIDs;
+        private int _unusedFileTotalCount = 0;
+        private ESteps _steps = ESteps.None;
+
+
+        internal ClearUnusedCacheBundleFilesOperation(DefaultCacheFileSystem fileSystem, PackageManifest manifest)
+        {
+            _fileSystem = fileSystem;
+            _manifest = manifest;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.CheckManifest;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.CheckManifest)
+            {
+                if (_manifest == null)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = "Can not found active package manifest !";
+                }
+                else
+                {
+                    _steps = ESteps.GetUnusedCacheFiles;
+                }
+            }
+
+            if (_steps == ESteps.GetUnusedCacheFiles)
+            {
+                _unusedBundleGUIDs = GetUnusedBundleGUIDs();
+                _unusedFileTotalCount = _unusedBundleGUIDs.Count;
+                _steps = ESteps.ClearUnusedCacheFiles;
+                YooLogger.Log($"Found unused cache files count : {_unusedFileTotalCount}");
+            }
+
+            if (_steps == ESteps.ClearUnusedCacheFiles)
+            {
+                for (int i = _unusedBundleGUIDs.Count - 1; i >= 0; i--)
+                {
+                    string bundleGUID = _unusedBundleGUIDs[i];
+                    _fileSystem.DeleteCacheBundleFile(bundleGUID);
+                    _unusedBundleGUIDs.RemoveAt(i);
+                    if (OperationSystem.IsBusy)
+                        break;
+                }
+
+                if (_unusedFileTotalCount == 0)
+                    Progress = 1.0f;
+                else
+                    Progress = 1.0f - (_unusedBundleGUIDs.Count / _unusedFileTotalCount);
+
+                if (_unusedBundleGUIDs.Count == 0)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+            }
+        }
+
+        private List<string> GetUnusedBundleGUIDs()
+        {
+            var allBundleGUIDs = _fileSystem.GetAllCachedBundleGUIDs();
+            List<string> result = new List<string>(allBundleGUIDs.Count);
+            foreach (var bundleGUID in allBundleGUIDs)
+            {
+                if (_manifest.IsIncludeBundleFile(bundleGUID) == false)
+                {
+                    result.Add(bundleGUID);
+                }
+            }
+            return result;
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearUnusedCacheBundleFilesOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 69b90bce1789fe74a80c3b17df819d15
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearUnusedCacheManifestFilesOperation.cs

@@ -0,0 +1,85 @@
+using System;
+using System.IO;
+
+namespace YooAsset
+{
+    internal sealed class ClearUnusedCacheManifestFilesOperation : FSClearCacheFilesOperation
+    {
+        private enum ESteps
+        {
+            None,
+            CheckManifest,
+            ClearUnusedCacheFiles,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private readonly PackageManifest _manifest;
+        private ESteps _steps = ESteps.None;
+
+
+        internal ClearUnusedCacheManifestFilesOperation(DefaultCacheFileSystem fileSystem, PackageManifest manifest)
+        {
+            _fileSystem = fileSystem;
+            _manifest = manifest;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.CheckManifest;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.CheckManifest)
+            {
+                if (_manifest == null)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = "Can not found active package manifest !";
+                }
+                else
+                {
+                    _steps = ESteps.ClearUnusedCacheFiles;
+                }
+            }
+
+            if (_steps == ESteps.ClearUnusedCacheFiles)
+            {
+                try
+                {
+                    string activeManifestFileName = YooAssetSettingsData.GetManifestBinaryFileName(_manifest.PackageName, _manifest.PackageVersion);
+                    string activeHashFileName = YooAssetSettingsData.GetPackageHashFileName(_manifest.PackageName, _manifest.PackageVersion);
+
+                    // 注意：如果正在下载资源清单，会有几率触发异常！
+                    string directoryRoot = _fileSystem.GetCacheManifestFilesRoot();
+                    DirectoryInfo directoryInfo = new DirectoryInfo(directoryRoot);
+                    if (directoryInfo.Exists)
+                    {
+                        foreach (FileInfo fileInfo in directoryInfo.GetFiles())
+                        {
+                            string fileName = fileInfo.Name;
+                            if (fileName == DefaultCacheFileSystemDefine.AppFootPrintFileName)
+                                continue;
+                            if (fileName == activeManifestFileName || fileName == activeHashFileName)
+                                continue;
+
+                            fileInfo.Delete();
+                        }
+                    }
+
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+                catch (Exception ex)
+                {
+                    _steps = ESteps.Done;
+                    Error = ex.Message;
+                    Status = EOperationStatus.Failed;
+                }
+            }
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearUnusedCacheManifestFilesOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: ea1b7f898bea1234eb035a8058becb33
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadCenterOperation.cs

@@ -0,0 +1,133 @@
+using System;
+using System.Collections.Generic;
+
+namespace YooAsset
+{
+    internal class DownloadCenterOperation : AsyncOperationBase
+    {
+        private readonly DefaultCacheFileSystem _fileSystem;
+        protected readonly Dictionary<string, UnityDownloadFileOperation> _downloaders = new Dictionary<string, UnityDownloadFileOperation>(1000);
+        protected readonly List<string> _removeList = new List<string>(1000);
+
+        public DownloadCenterOperation(DefaultCacheFileSystem fileSystem)
+        {
+            _fileSystem = fileSystem;
+        }
+        internal override void InternalStart()
+        {
+        }
+        internal override void InternalUpdate()
+        {
+            // 获取可移除的下载器集合
+            _removeList.Clear();
+            foreach (var valuePair in _downloaders)
+            {
+                var downloader = valuePair.Value;
+                downloader.UpdateOperation();
+                if (downloader.IsDone)
+                {
+                    _removeList.Add(valuePair.Key);
+                    continue;
+                }
+
+                // 注意：主动终止引用计数为零的下载任务
+                if (downloader.RefCount <= 0)
+                {
+                    _removeList.Add(valuePair.Key);
+                    downloader.AbortOperation();
+                    continue;
+                }
+            }
+
+            // 移除下载器
+            foreach (var key in _removeList)
+            {
+                if (_downloaders.TryGetValue(key, out var downloader))
+                {
+                    Childs.Remove(downloader);
+                    _downloaders.Remove(key);
+                }
+            }
+
+            // 最大并发数检测
+            int processCount = GetProcessingOperationCount();
+            if (processCount != _downloaders.Count)
+            {
+                if (processCount < _fileSystem.DownloadMaxConcurrency)
+                {
+                    int startCount = _fileSystem.DownloadMaxConcurrency - processCount;
+                    if (startCount > _fileSystem.DownloadMaxRequestPerFrame)
+                        startCount = _fileSystem.DownloadMaxRequestPerFrame;
+
+                    foreach (var operationPair in _downloaders)
+                    {
+                        var operation = operationPair.Value;
+                        if (operation.Status == EOperationStatus.None)
+                        {
+                            operation.StartOperation();
+                            startCount--;
+                            if (startCount <= 0)
+                                break;
+                        }
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// 创建下载任务
+        /// </summary>
+        public UnityDownloadFileOperation DownloadFileAsync(PackageBundle bundle, string url)
+        {
+            // 查询旧的下载器
+            if (_downloaders.TryGetValue(bundle.BundleGUID, out var oldDownloader))
+            {
+                oldDownloader.Reference();
+                return oldDownloader;
+            }
+
+            // 创建新的下载器
+            UnityDownloadFileOperation newDownloader;
+            bool isRequestLocalFile = DownloadSystemHelper.IsRequestLocalFile(url);
+            if (isRequestLocalFile)
+            {
+                newDownloader = new UnityDownloadLocalFileOperation(_fileSystem, bundle, url);
+                AddChildOperation(newDownloader);
+                _downloaders.Add(bundle.BundleGUID, newDownloader);
+            }
+            else
+            {
+                if (bundle.FileSize >= _fileSystem.ResumeDownloadMinimumSize)
+                {
+                    newDownloader = new UnityDownloadResumeFileOperation(_fileSystem, bundle, url);
+                    AddChildOperation(newDownloader);
+                    _downloaders.Add(bundle.BundleGUID, newDownloader);
+                }
+                else
+                {
+                    newDownloader = new UnityDownloadNormalFileOperation(_fileSystem, bundle, url);
+                    AddChildOperation(newDownloader);
+                    _downloaders.Add(bundle.BundleGUID, newDownloader);
+                }
+            }
+
+            newDownloader.Reference();
+            return newDownloader;
+        }
+
+        /// <summary>
+        /// 获取正在进行中的下载器总数
+        /// </summary>
+        private int GetProcessingOperationCount()
+        {
+            int count = 0;
+            foreach (var operationPair in _downloaders)
+            {
+                var operation = operationPair.Value;
+                if (operation.Status != EOperationStatus.None)
+                    count++;
+            }
+            return count;
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadCenterOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 8d62d6b21d679dc419a6ca7edf113fc3
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageBundleOperation.cs

@@ -0,0 +1,164 @@
+using UnityEngine;
+
+namespace YooAsset
+{
+    internal class DownloadPackageBundleOperation : FSDownloadFileOperation
+    {
+        protected enum ESteps
+        {
+            None,
+            CheckExists,
+            CreateRequest,
+            CheckRequest,
+            TryAgain,
+            Done,
+        }
+
+        // 下载参数
+        protected readonly DefaultCacheFileSystem _fileSystem;
+        protected readonly DownloadFileOptions _options;
+        private UnityDownloadFileOperation _unityDownloadFileOp;
+
+        protected int _requestCount = 0;
+        protected float _tryAgainTimer;
+        protected int _failedTryAgain;
+        private ESteps _steps = ESteps.None;
+
+
+        internal DownloadPackageBundleOperation(DefaultCacheFileSystem fileSystem, PackageBundle bundle, DownloadFileOptions options) : base(bundle)
+        {
+            _fileSystem = fileSystem;
+            _options = options;
+            _failedTryAgain = options.FailedTryAgain;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.CheckExists;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            // 检测文件是否存在
+            if (_steps == ESteps.CheckExists)
+            {
+                if (_fileSystem.Exists(Bundle))
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    _steps = ESteps.CreateRequest;
+                }
+            }
+
+            // 创建下载器
+            if (_steps == ESteps.CreateRequest)
+            {
+                if (_options.IsValid() == false)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = "Download file options is invalid !";
+                    Debug.Log(Error);
+                    return;
+                }
+
+                string url = GetRequestURL();
+                _unityDownloadFileOp = _fileSystem.DownloadCenter.DownloadFileAsync(Bundle, url);
+                _steps = ESteps.CheckRequest;
+            }
+
+            // 检测下载结果
+            if (_steps == ESteps.CheckRequest)
+            {
+                if (IsWaitForAsyncComplete)
+                    _unityDownloadFileOp.WaitForAsyncComplete();
+
+                // 因为并发数量限制，下载器可能被挂起！
+                if (_unityDownloadFileOp.Status == EOperationStatus.None)
+                    return;
+
+                _unityDownloadFileOp.UpdateOperation();
+                Progress = _unityDownloadFileOp.Progress;
+                DownloadedBytes = _unityDownloadFileOp.DownloadedBytes;
+                DownloadProgress = _unityDownloadFileOp.DownloadProgress;
+                if (_unityDownloadFileOp.IsDone == false)
+                    return;
+
+                if (_unityDownloadFileOp.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    if (IsWaitForAsyncComplete == false && _failedTryAgain > 0)
+                    {
+                        _steps = ESteps.TryAgain;
+                        YooLogger.Warning($"Failed download : {_unityDownloadFileOp.URL} Try again !");
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = _unityDownloadFileOp.Error;
+                        YooLogger.Error(Error);
+                    }
+                }
+            }
+
+            // 重新尝试下载
+            if (_steps == ESteps.TryAgain)
+            {
+                _tryAgainTimer += Time.unscaledDeltaTime;
+                if (_tryAgainTimer > 1f)
+                {
+                    _tryAgainTimer = 0f;
+                    _failedTryAgain--;
+                    Progress = 0f;
+                    DownloadProgress = 0f;
+                    DownloadedBytes = 0;
+                    _steps = ESteps.CreateRequest;
+                }
+            }
+        }
+        internal override void InternalWaitForAsyncComplete()
+        {
+            while (true)
+            {
+                if (ExecuteWhileDone())
+                {
+                    _steps = ESteps.Done;
+                    break;
+                }
+            }
+        }
+        internal override void InternalAbort()
+        {
+            // 注意：取消下载任务的时候引用计数减一
+            if (_steps != ESteps.Done)
+            {
+                if (_unityDownloadFileOp != null)
+                {
+                    _unityDownloadFileOp.Release();
+                }
+            }
+        }
+
+        /// <summary>
+        /// 获取网络请求地址
+        /// </summary>
+        protected string GetRequestURL()
+        {
+            // 轮流返回请求地址
+            _requestCount++;
+            if (_requestCount % 2 == 0)
+                return _options.FallbackURL;
+            else
+                return _options.MainURL;
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageBundleOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: ee6d81ad39d45c14db3e2480a5031f0d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageHashOperation.cs

@@ -0,0 +1,93 @@
+using System.IO;
+
+namespace YooAsset
+{
+    internal class DownloadPackageHashOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            CheckExist,
+            DownloadFile,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private readonly string _packageVersion;
+        private readonly int _timeout;
+        private UnityWebFileRequestOperation _webFileRequestOp;
+        private int _requestCount = 0;
+        private ESteps _steps = ESteps.None;
+
+
+        internal DownloadPackageHashOperation(DefaultCacheFileSystem fileSystem, string packageVersion, int timeout)
+        {
+            _fileSystem = fileSystem;
+            _packageVersion = packageVersion;
+            _timeout = timeout;
+        }
+        internal override void InternalStart()
+        {
+            _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(DownloadPackageHashOperation));
+            _steps = ESteps.CheckExist;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.CheckExist)
+            {
+                string filePath = _fileSystem.GetCachePackageHashFilePath(_packageVersion);
+                if (File.Exists(filePath))
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    _steps = ESteps.DownloadFile;
+                }
+            }
+
+            if (_steps == ESteps.DownloadFile)
+            {
+                if (_webFileRequestOp == null)
+                {
+                    string savePath = _fileSystem.GetCachePackageHashFilePath(_packageVersion);
+                    string fileName = YooAssetSettingsData.GetPackageHashFileName(_fileSystem.PackageName, _packageVersion);
+                    string webURL = GetWebRequestURL(fileName);
+                    _webFileRequestOp = new UnityWebFileRequestOperation(webURL, savePath, _timeout);
+                    _webFileRequestOp.StartOperation();
+                    AddChildOperation(_webFileRequestOp);
+                }
+
+                _webFileRequestOp.UpdateOperation();
+                if (_webFileRequestOp.IsDone == false)
+                    return;
+
+                if (_webFileRequestOp.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _webFileRequestOp.Error;
+                    WebRequestCounter.RecordRequestFailed(_fileSystem.PackageName, nameof(DownloadPackageHashOperation));
+                }
+            }
+        }
+
+        private string GetWebRequestURL(string fileName)
+        {
+            // 轮流返回请求地址
+            if (_requestCount % 2 == 0)
+                return _fileSystem.RemoteServices.GetRemoteMainURL(fileName);
+            else
+                return _fileSystem.RemoteServices.GetRemoteFallbackURL(fileName);
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageHashOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 474112f0231e0304f80d9d861419d5d2
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageManifestOperation.cs

@@ -0,0 +1,93 @@
+using System.IO;
+
+namespace YooAsset
+{
+    internal class DownloadPackageManifestOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            CheckExist,
+            DownloadFile,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private readonly string _packageVersion;
+        private readonly int _timeout;
+        private UnityWebFileRequestOperation _webFileRequestOp;
+        private int _requestCount = 0;
+        private ESteps _steps = ESteps.None;
+
+
+        internal DownloadPackageManifestOperation(DefaultCacheFileSystem fileSystem, string packageVersion, int timeout)
+        {
+            _fileSystem = fileSystem;
+            _packageVersion = packageVersion;
+            _timeout = timeout;
+        }
+        internal override void InternalStart()
+        {
+            _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(DownloadPackageManifestOperation));
+            _steps = ESteps.CheckExist;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.CheckExist)
+            {
+                string filePath = _fileSystem.GetCachePackageManifestFilePath(_packageVersion);
+                if (File.Exists(filePath))
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    _steps = ESteps.DownloadFile;
+                }
+            }
+
+            if (_steps == ESteps.DownloadFile)
+            {
+                if (_webFileRequestOp == null)
+                {
+                    string savePath = _fileSystem.GetCachePackageManifestFilePath(_packageVersion);
+                    string fileName = YooAssetSettingsData.GetManifestBinaryFileName(_fileSystem.PackageName, _packageVersion);
+                    string webURL = GetDownloadRequestURL(fileName);
+                    _webFileRequestOp = new UnityWebFileRequestOperation(webURL, savePath, _timeout);
+                    _webFileRequestOp.StartOperation();
+                    AddChildOperation(_webFileRequestOp);
+                }
+
+                _webFileRequestOp.UpdateOperation();
+                if (_webFileRequestOp.IsDone == false)
+                    return;
+
+                if (_webFileRequestOp.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _webFileRequestOp.Error;
+                    WebRequestCounter.RecordRequestFailed(_fileSystem.PackageName, nameof(DownloadPackageManifestOperation));
+                }
+            }
+        }
+
+        private string GetDownloadRequestURL(string fileName)
+        {
+            // 轮流返回请求地址
+            if (_requestCount % 2 == 0)
+                return _fileSystem.RemoteServices.GetRemoteMainURL(fileName);
+            else
+                return _fileSystem.RemoteServices.GetRemoteFallbackURL(fileName);
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageManifestOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: c77d8a3ebdb423c43bf5e4de899d3d23
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/LoadCachePackageHashOperation.cs

@@ -0,0 +1,64 @@
+using System.IO;
+
+namespace YooAsset
+{
+    internal class LoadCachePackageHashOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            LoadPackageHash,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private readonly string _packageVersion;
+        private ESteps _steps = ESteps.None;
+
+        /// <summary>
+        /// 包裹哈希值
+        /// </summary>
+        public string PackageHash { private set; get; }
+
+
+        internal LoadCachePackageHashOperation(DefaultCacheFileSystem fileSystem, string packageVersion)
+        {
+            _fileSystem = fileSystem;
+            _packageVersion = packageVersion;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.LoadPackageHash;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.LoadPackageHash)
+            {
+                string filePath = _fileSystem.GetCachePackageHashFilePath(_packageVersion);
+                if (File.Exists(filePath) == false)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = $"Can not found cache package hash file : {filePath}";
+                    return;
+                }
+
+                PackageHash = FileUtility.ReadAllText(filePath);
+                if (string.IsNullOrEmpty(PackageHash))
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = $"Cache package hash file content is empty !";
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+            }
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/LoadCachePackageHashOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: bda62e924b79c164999d6b16ff8f7414
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/LoadCachePackageManifestOperation.cs

@@ -0,0 +1,107 @@
+using System.IO;
+
+namespace YooAsset
+{
+    internal class LoadCachePackageManifestOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            LoadFileData,
+            VerifyFileData,
+            LoadManifest,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private readonly string _packageVersion;
+        private readonly string _packageHash;
+        private DeserializeManifestOperation _deserializer;
+        private byte[] _fileData;
+        private ESteps _steps = ESteps.None;
+
+        /// <summary>
+        /// 包裹清单
+        /// </summary>
+        public PackageManifest Manifest { private set; get; }
+
+
+        internal LoadCachePackageManifestOperation(DefaultCacheFileSystem fileSystem, string packageVersion, string packageHash)
+        {
+            _fileSystem = fileSystem;
+            _packageVersion = packageVersion;
+            _packageHash = packageHash;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.LoadFileData;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.LoadFileData)
+            {
+                string manifestFilePath = _fileSystem.GetCachePackageManifestFilePath(_packageVersion);
+                if (File.Exists(manifestFilePath))
+                {
+                    _steps = ESteps.VerifyFileData;
+                    _fileData = File.ReadAllBytes(manifestFilePath);
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = $"Can not found cache manifest file : {manifestFilePath}";
+                }
+            }
+
+            if (_steps == ESteps.VerifyFileData)
+            {
+                if (ManifestTools.VerifyManifestData(_fileData, _packageHash))
+                {
+                    _steps = ESteps.LoadManifest;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = "Failed to verify cache package manifest file!";
+                }
+            }
+
+            if (_steps == ESteps.LoadManifest)
+            {
+                if (_deserializer == null)
+                {
+                    _deserializer = new DeserializeManifestOperation(_fileSystem.ManifestServices, _fileData);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
+                }
+
+                _deserializer.UpdateOperation();
+                Progress = _deserializer.Progress;
+                if (_deserializer.IsDone == false)
+                    return;
+
+                if (_deserializer.Status == EOperationStatus.Succeed)
+                {
+                    _steps = ESteps.Done;
+                    Manifest = _deserializer.Manifest;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _deserializer.Error;
+                }
+            }
+        }
+        internal override string InternalGetDesc()
+        {
+            return $"PackageVersion : {_packageVersion} PackageHash : {_packageHash}";
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/LoadCachePackageManifestOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6847d36912014d242a3b81109136aaf3
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/RequestRemotePackageVersionOperation.cs

@@ -0,0 +1,100 @@
+
+namespace YooAsset
+{
+    internal class RequestRemotePackageVersionOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            RequestPackageVersion,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private readonly bool _appendTimeTicks;
+        private readonly int _timeout;
+        private UnityWebTextRequestOperation _webTextRequestOp;
+        private int _requestCount = 0;
+        private ESteps _steps = ESteps.None;
+
+        /// <summary>
+        /// 包裹版本
+        /// </summary>
+        internal string PackageVersion { set; get; }
+
+
+        internal RequestRemotePackageVersionOperation(DefaultCacheFileSystem fileSystem, bool appendTimeTicks, int timeout)
+        {
+            _fileSystem = fileSystem;
+            _appendTimeTicks = appendTimeTicks;
+            _timeout = timeout;
+        }
+        internal override void InternalStart()
+        {
+            _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(RequestRemotePackageVersionOperation));
+            _steps = ESteps.RequestPackageVersion;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.RequestPackageVersion)
+            {
+                if (_webTextRequestOp == null)
+                {
+                    string fileName = YooAssetSettingsData.GetPackageVersionFileName(_fileSystem.PackageName);
+                    string url = GetWebRequestURL(fileName);
+                    _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
+                }
+
+                _webTextRequestOp.UpdateOperation();
+                Progress = _webTextRequestOp.Progress;
+                if (_webTextRequestOp.IsDone == false)
+                    return;
+
+                if (_webTextRequestOp.Status == EOperationStatus.Succeed)
+                {
+                    PackageVersion = _webTextRequestOp.Result;
+                    if (string.IsNullOrEmpty(PackageVersion))
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"Remote package version file content is empty !";
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Succeed;
+                    }
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _webTextRequestOp.Error;
+                    WebRequestCounter.RecordRequestFailed(_fileSystem.PackageName, nameof(RequestRemotePackageVersionOperation));
+                }
+            }
+        }
+
+        private string GetWebRequestURL(string fileName)
+        {
+            string url;
+
+            // 轮流返回请求地址
+            if (_requestCount % 2 == 0)
+                url = _fileSystem.RemoteServices.GetRemoteMainURL(fileName);
+            else
+                url = _fileSystem.RemoteServices.GetRemoteFallbackURL(fileName);
+
+            // 在URL末尾添加时间戳
+            if (_appendTimeTicks)
+                return $"{url}?{System.DateTime.UtcNow.Ticks}";
+            else
+                return url;
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/RequestRemotePackageVersionOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 89cf0b35ecc01ba409d4e9e7b739617e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/SearchCacheFilesOperation.cs

@@ -0,0 +1,126 @@
+using System;
+using System.IO;
+using System.Collections;
+using System.Collections.Generic;
+
+namespace YooAsset
+{
+    internal sealed class SearchCacheFilesOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            Prepare,
+            SearchFiles,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private IEnumerator<DirectoryInfo> _filesEnumerator = null;
+        private float _verifyStartTime;
+        private ESteps _steps = ESteps.None;
+
+        /// <summary>
+        /// 需要验证的元素
+        /// </summary>
+        public readonly List<VerifyFileElement> Result = new List<VerifyFileElement>(5000);
+
+
+        internal SearchCacheFilesOperation(DefaultCacheFileSystem fileSystem)
+        {
+            _fileSystem = fileSystem;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.Prepare;
+            _verifyStartTime = UnityEngine.Time.realtimeSinceStartup;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.Prepare)
+            {
+                DirectoryInfo rootDirectory = new DirectoryInfo(_fileSystem.GetCacheBundleFilesRoot());
+                if (rootDirectory.Exists)
+                {
+                    var directorieInfos = rootDirectory.EnumerateDirectories();
+                    _filesEnumerator = directorieInfos.GetEnumerator();
+                }
+                _steps = ESteps.SearchFiles;
+            }
+
+            if (_steps == ESteps.SearchFiles)
+            {
+                if (SearchFiles())
+                    return;
+
+                _steps = ESteps.Done;
+                Status = EOperationStatus.Succeed;
+                float costTime = UnityEngine.Time.realtimeSinceStartup - _verifyStartTime;
+                YooLogger.Log($"Search cache files elapsed time {costTime:f1} seconds");
+            }
+        }
+
+        private bool SearchFiles()
+        {
+            if (_filesEnumerator == null)
+                return false;
+
+            bool isFindItem;
+            while (true)
+            {
+                isFindItem = _filesEnumerator.MoveNext();
+                if (isFindItem == false)
+                    break;
+
+                var rootFoder = _filesEnumerator.Current;
+                var childDirectories = rootFoder.GetDirectories();
+                foreach (var chidDirectory in childDirectories)
+                {
+                    string bundleGUID = chidDirectory.Name;
+                    if (_fileSystem.IsRecordBundleFile(bundleGUID))
+                        continue;
+
+                    // 创建验证元素类
+                    string fileRootPath = chidDirectory.FullName;
+                    string dataFilePath = $"{fileRootPath}/{DefaultCacheFileSystemDefine.BundleDataFileName}";
+                    string infoFilePath = $"{fileRootPath}/{DefaultCacheFileSystemDefine.BundleInfoFileName}";
+
+                    // 存储的数据文件追加文件格式
+                    if (_fileSystem.AppendFileExtension)
+                    {
+                        string dataFileExtension = FindDataFileExtension(chidDirectory);
+                        if (string.IsNullOrEmpty(dataFileExtension) == false)
+                        {
+                            dataFilePath += dataFileExtension;
+                        }
+                    }
+
+                    var element = new VerifyFileElement(_fileSystem.PackageName, bundleGUID, fileRootPath, dataFilePath, infoFilePath);
+                    Result.Add(element);
+                }
+
+                if (OperationSystem.IsBusy)
+                    break;
+            }
+
+            return isFindItem;
+        }
+        private string FindDataFileExtension(DirectoryInfo directoryInfo)
+        {
+            string dataFileExtension = string.Empty;
+            var fileInfos = directoryInfo.GetFiles();
+            foreach (var fileInfo in fileInfos)
+            {
+                if (fileInfo.Name.StartsWith(DefaultCacheFileSystemDefine.BundleDataFileName))
+                {
+                    dataFileExtension = fileInfo.Extension;
+                    break;
+                }
+            }
+            return dataFileExtension;
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/SearchCacheFilesOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 707dfa6a50e50b94a8abcea09aee6293
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/UnityDownloadFileOperation.cs

@@ -0,0 +1,98 @@
+
+namespace YooAsset
+{
+    internal abstract class UnityDownloadFileOperation : UnityWebRequestOperation
+    {
+        protected enum ESteps
+        {
+            None,
+            CreateRequest,
+            Download,
+            CopyLocalFile,
+            VerifyFile,
+            Done,
+        }
+
+        protected readonly DefaultCacheFileSystem _fileSystem;
+        protected readonly PackageBundle _bundle;
+        protected readonly string _tempFilePath;
+
+        private bool _watchDogInit = false;
+        private bool _watchDogAborted = false;
+        private ulong _lastDownloadBytes;
+        private double _lastGetDataTime;
+
+        /// <summary>
+        /// 引用计数
+        /// </summary>
+        public int RefCount { private set; get; }
+
+        internal UnityDownloadFileOperation(DefaultCacheFileSystem fileSystem, PackageBundle bundle, string url) : base(url)
+        {
+            _fileSystem = fileSystem;
+            _bundle = bundle;
+            _tempFilePath = _fileSystem.GetTempFilePath(bundle);
+        }
+        internal override string InternalGetDesc()
+        {
+            return $"RefCount : {RefCount}";
+        }
+
+        /// <summary>
+        /// 更新看门狗监测
+        /// 说明：监控时间范围内，如果没有接收到任何下载数据，那么直接终止任务！
+        /// </summary>
+        protected void UpdateWatchDog()
+        {
+            if (_fileSystem.DownloadWatchDogTime == int.MaxValue)
+                return;
+
+            if (_watchDogAborted)
+                return;
+
+#if UNITY_2020_3_OR_NEWER
+            double realtimeSinceStartup = UnityEngine.Time.realtimeSinceStartupAsDouble;
+#else
+            double realtimeSinceStartup = UnityEngine.Time.realtimeSinceStartup;
+#endif
+
+            if (_watchDogInit == false)
+            {
+                _watchDogInit = true;
+                _lastDownloadBytes = 0;
+                _lastGetDataTime = realtimeSinceStartup;
+            }
+
+            if (_webRequest.downloadedBytes != _lastDownloadBytes)
+            {
+                _lastDownloadBytes = _webRequest.downloadedBytes;
+                _lastGetDataTime = realtimeSinceStartup;
+            }
+            else
+            {
+                double deltaTime = realtimeSinceStartup - _lastGetDataTime;
+                if (deltaTime > _fileSystem.DownloadWatchDogTime)
+                {
+                    _watchDogAborted = true;
+                    InternalAbort(); //终止网络请求
+                }
+            }
+        }
+
+        /// <summary>
+        /// 减少引用计数
+        /// </summary>
+        public void Release()
+        {
+            RefCount--;
+        }
+
+        /// <summary>
+        /// 增加引用计数
+        /// </summary>
+        public void Reference()
+        {
+            RefCount++;
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/UnityDownloadFileOperation.cs.meta

@@ -0,0 +1,11 @@
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+guid: 4bfe14e99f4c2ad40b831f085ec1f996
+MonoImporter:
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+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/UnityDownloadLocalFileOperation.cs

@@ -0,0 +1,170 @@
+using System.IO;
+using UnityEngine;
+using UnityEngine.Networking;
+
+namespace YooAsset
+{
+    internal sealed class UnityDownloadLocalFileOperation : UnityDownloadFileOperation
+    {
+        private VerifyTempFileOperation _verifyOperation;
+        private ESteps _steps = ESteps.None;
+
+        internal UnityDownloadLocalFileOperation(DefaultCacheFileSystem fileSystem, PackageBundle bundle, string url)
+            : base(fileSystem, bundle, url)
+        {
+        }
+        internal override void InternalStart()
+        {
+            if (_fileSystem.CopyLocalFileServices != null)
+                _steps = ESteps.CopyLocalFile;
+            else
+                _steps = ESteps.CreateRequest;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            // 创建下载器
+            if (_steps == ESteps.CreateRequest)
+            {
+                FileUtility.CreateFileDirectory(_tempFilePath);
+                if (File.Exists(_tempFilePath))
+                    File.Delete(_tempFilePath);
+
+                CreateWebRequest();
+                _steps = ESteps.Download;
+            }
+
+            // 检测下载结果
+            if (_steps == ESteps.Download)
+            {
+                DownloadProgress = _webRequest.downloadProgress;
+                DownloadedBytes = (long)_webRequest.downloadedBytes;
+                Progress = DownloadProgress;
+
+                UpdateWatchDog();
+                if (_webRequest.isDone == false)
+                    return;
+
+                // 检查网络错误
+                if (CheckRequestResult())
+                {
+                    _steps = ESteps.VerifyFile;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                }
+
+                // 注意：最终释放请求器
+                DisposeRequest();
+            }
+
+            // 拷贝内置文件
+            if (_steps == ESteps.CopyLocalFile)
+            {
+                FileUtility.CreateFileDirectory(_tempFilePath);
+                if (File.Exists(_tempFilePath))
+                    File.Delete(_tempFilePath);
+
+                try
+                {
+                    //TODO 团结引擎，在某些机型（红米），拷贝包内文件会小概率失败！需要借助其它方式来拷贝包内文件。
+                    var localFileInfo = new LocalFileInfo();
+                    localFileInfo.PackageName = _fileSystem.PackageName;
+                    localFileInfo.BundleName = _bundle.BundleName;
+                    localFileInfo.SourceFileURL = _requestURL;
+                    _fileSystem.CopyLocalFileServices.CopyFile(localFileInfo, _tempFilePath);
+                    if (File.Exists(_tempFilePath))
+                    {
+                        DownloadProgress = 1f;
+                        DownloadedBytes = _bundle.FileSize;
+                        Progress = DownloadProgress;
+                        _steps = ESteps.VerifyFile;
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"Failed copy local file : {_requestURL}";
+                    }
+                }
+                catch (System.Exception ex)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = $"Failed copy local file : {ex.Message}";
+                }
+            }
+
+            // 验证下载文件
+            if (_steps == ESteps.VerifyFile)
+            {
+                if (_verifyOperation == null)
+                {
+                    var element = new TempFileElement(_tempFilePath, _bundle.FileCRC, _bundle.FileSize);
+                    _verifyOperation = new VerifyTempFileOperation(element);
+                    _verifyOperation.StartOperation();
+                    AddChildOperation(_verifyOperation);
+                }
+
+                if (IsWaitForAsyncComplete)
+                    _verifyOperation.WaitForAsyncComplete();
+
+                _verifyOperation.UpdateOperation();
+                if (_verifyOperation.IsDone == false)
+                    return;
+
+                if (_verifyOperation.Status == EOperationStatus.Succeed)
+                {
+                    if (_fileSystem.WriteCacheBundleFile(_bundle, _tempFilePath))
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Succeed;
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"{_fileSystem.GetType().FullName} failed to write file !";
+                    }
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _verifyOperation.Error;
+                }
+
+                // 注意：验证完成后直接删除文件
+                if (File.Exists(_tempFilePath))
+                    File.Delete(_tempFilePath);
+            }
+        }
+        internal override void InternalWaitForAsyncComplete()
+        {
+            while (true)
+            {
+                //TODO 等待导入或解压本地文件完毕，该操作会挂起主线程！
+                InternalUpdate();
+                if (IsDone)
+                    break;
+
+                // 短暂休眠避免完全卡死
+                System.Threading.Thread.Sleep(1);
+            }
+        }
+
+        private void CreateWebRequest()
+        {
+            DownloadHandlerFile handler = new DownloadHandlerFile(_tempFilePath);
+            handler.removeFileOnAbort = true;
+            _webRequest = DownloadSystemHelper.NewUnityWebRequestGet(_requestURL);
+            _webRequest.downloadHandler = handler;
+            _webRequest.disposeDownloadHandlerOnDispose = true;
+            _webRequest.SendWebRequest();
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/UnityDownloadLocalFileOperation.cs.meta

@@ -0,0 +1,11 @@
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+guid: a5a5072270157e049a03a09cebbd3415
+MonoImporter:
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+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/UnityDownloadNormalFileOperation.cs

@@ -0,0 +1,124 @@
+using System.IO;
+using UnityEngine;
+using UnityEngine.Networking;
+
+namespace YooAsset
+{
+    internal sealed class UnityDownloadNormalFileOperation : UnityDownloadFileOperation
+    {
+        private VerifyTempFileOperation _verifyOperation;
+        private ESteps _steps = ESteps.None;
+
+        internal UnityDownloadNormalFileOperation(DefaultCacheFileSystem fileSystem, PackageBundle bundle, string url)
+            : base(fileSystem, bundle, url)
+        {
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.CreateRequest;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            // 创建下载器
+            if (_steps == ESteps.CreateRequest)
+            {
+                FileUtility.CreateFileDirectory(_tempFilePath);
+                if (File.Exists(_tempFilePath))
+                    File.Delete(_tempFilePath);
+
+                CreateWebRequest();
+                _steps = ESteps.Download;
+            }
+
+            // 检测下载结果
+            if (_steps == ESteps.Download)
+            {
+                DownloadProgress = _webRequest.downloadProgress;
+                DownloadedBytes = (long)_webRequest.downloadedBytes;
+                Progress = DownloadProgress;
+
+                UpdateWatchDog();
+                if (_webRequest.isDone == false)
+                    return;
+
+                // 检查网络错误
+                if (CheckRequestResult())
+                {
+                    _steps = ESteps.VerifyFile;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                }
+
+                // 注意：最终释放请求器
+                DisposeRequest();
+            }
+
+            // 验证下载文件
+            if (_steps == ESteps.VerifyFile)
+            {
+                if (_verifyOperation == null)
+                {
+                    var element = new TempFileElement(_tempFilePath, _bundle.FileCRC, _bundle.FileSize);
+                    _verifyOperation = new VerifyTempFileOperation(element);
+                    _verifyOperation.StartOperation();
+                    AddChildOperation(_verifyOperation);
+                }
+
+                if (IsWaitForAsyncComplete)
+                    _verifyOperation.WaitForAsyncComplete();
+
+                _verifyOperation.UpdateOperation();
+                if (_verifyOperation.IsDone == false)
+                    return;
+
+                if (_verifyOperation.Status == EOperationStatus.Succeed)
+                {
+                    if (_fileSystem.WriteCacheBundleFile(_bundle, _tempFilePath))
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Succeed;
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"{_fileSystem.GetType().FullName} failed to write file ! {_tempFilePath}";
+                    }
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _verifyOperation.Error;
+                }
+
+                // 注意：验证完成后直接删除文件
+                if (File.Exists(_tempFilePath))
+                    File.Delete(_tempFilePath);
+            }
+        }
+        internal override void InternalWaitForAsyncComplete()
+        {
+            if (_steps != ESteps.Done)
+            {
+                YooLogger.Error($"Try load bundle {_bundle.BundleName} from remote : {_requestURL} !");
+            }
+        }
+
+        private void CreateWebRequest()
+        {
+            DownloadHandlerFile handler = new DownloadHandlerFile(_tempFilePath);
+            handler.removeFileOnAbort = true;
+            _webRequest = DownloadSystemHelper.NewUnityWebRequestGet(_requestURL);
+            _webRequest.downloadHandler = handler;
+            _webRequest.disposeDownloadHandlerOnDispose = true;
+            _webRequest.SendWebRequest();
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/UnityDownloadNormalFileOperation.cs.meta

@@ -0,0 +1,11 @@
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+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/UnityDownloadResumeFileOperation.cs

@@ -0,0 +1,158 @@
+using System.IO;
+using UnityEngine;
+using UnityEngine.Networking;
+
+namespace YooAsset
+{
+    internal sealed class UnityDownloadResumeFileOperation : UnityDownloadFileOperation
+    {
+        private VerifyTempFileOperation _verifyOperation;
+        private long _fileOriginLength = 0;
+        private ESteps _steps = ESteps.None;
+
+        internal UnityDownloadResumeFileOperation(DefaultCacheFileSystem fileSystem, PackageBundle bundle, string url)
+            : base(fileSystem, bundle, url)
+        {
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.CreateRequest;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            // 创建下载器
+            if (_steps == ESteps.CreateRequest)
+            {
+                FileUtility.CreateFileDirectory(_tempFilePath);
+
+                // 获取下载起始位置
+                _fileOriginLength = 0;
+                long fileBeginLength = -1;
+                if (File.Exists(_tempFilePath))
+                {
+                    FileInfo fileInfo = new FileInfo(_tempFilePath);
+                    if (fileInfo.Length >= _bundle.FileSize)
+                    {
+                        File.Delete(_tempFilePath);
+                    }
+                    else
+                    {
+                        fileBeginLength = fileInfo.Length;
+                        _fileOriginLength = fileBeginLength;
+                        DownloadedBytes = _fileOriginLength;
+                    }
+                }
+
+                CreateWebRequest(fileBeginLength);
+                _steps = ESteps.Download;
+            }
+
+            // 检测下载结果
+            if (_steps == ESteps.Download)
+            {
+                DownloadProgress = _webRequest.downloadProgress;
+                DownloadedBytes = _fileOriginLength + (long)_webRequest.downloadedBytes;
+                Progress = DownloadProgress;
+
+                UpdateWatchDog();
+                if (_webRequest.isDone == false)
+                    return;
+
+                // 检查网络错误
+                if (CheckRequestResult())
+                {
+                    _steps = ESteps.VerifyFile;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                }
+
+                // 在遇到特殊错误的时候删除文件
+                ClearTempFileWhenError();
+
+                // 注意：最终释放请求器
+                DisposeRequest();
+            }
+
+            // 验证下载文件
+            if (_steps == ESteps.VerifyFile)
+            {
+                if (_verifyOperation == null)
+                {
+                    var element = new TempFileElement(_tempFilePath, _bundle.FileCRC, _bundle.FileSize);
+                    _verifyOperation = new VerifyTempFileOperation(element);
+                    _verifyOperation.StartOperation();
+                    AddChildOperation(_verifyOperation);
+                }
+
+                if (IsWaitForAsyncComplete)
+                    _verifyOperation.WaitForAsyncComplete();
+
+                _verifyOperation.UpdateOperation();
+                if (_verifyOperation.IsDone == false)
+                    return;
+
+                if (_verifyOperation.Status == EOperationStatus.Succeed)
+                {
+                    if (_fileSystem.WriteCacheBundleFile(_bundle, _tempFilePath))
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Succeed;
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"{_fileSystem.GetType().FullName} failed to write file !";
+                    }
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = _verifyOperation.Error;
+                }
+
+                // 注意：验证完成后直接删除文件
+                if (File.Exists(_tempFilePath))
+                    File.Delete(_tempFilePath);
+            }
+        }
+        internal override void InternalWaitForAsyncComplete()
+        {
+            if (_steps != ESteps.Done)
+            {
+                YooLogger.Error($"Try load bundle {_bundle.BundleName} from remote : {_requestURL} !");
+            }
+        }
+
+        private void ClearTempFileWhenError()
+        {
+            if (_fileSystem.ResumeDownloadResponseCodes == null)
+                return;
+
+            //说明：如果遇到以下错误返回码，验证失败直接删除文件
+            if (_fileSystem.ResumeDownloadResponseCodes.Contains(HttpCode))
+            {
+                if (File.Exists(_tempFilePath))
+                    File.Delete(_tempFilePath);
+            }
+        }
+        private void CreateWebRequest(long fileBeginLength)
+        {
+            var handler = new DownloadHandlerFile(_tempFilePath, true);
+            handler.removeFileOnAbort = false;
+            _webRequest = DownloadSystemHelper.NewUnityWebRequestGet(_requestURL);
+            _webRequest.downloadHandler = handler;
+            _webRequest.disposeDownloadHandlerOnDispose = true;
+            if (fileBeginLength > 0)
+                _webRequest.SetRequestHeader("Range", $"bytes={fileBeginLength}-");
+            _webRequest.SendWebRequest();
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/UnityDownloadResumeFileOperation.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 7f5cd6992b887b842b19d35d1ae2712b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/VerifyCacheFilesOperation.cs

@@ -0,0 +1,175 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading;
+
+namespace YooAsset
+{
+    /// <summary>
+    /// 缓存文件验证（线程版）
+    /// </summary>
+    internal sealed class VerifyCacheFilesOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            InitVerify,
+            UpdateVerify,
+            Done,
+        }
+
+        private readonly DefaultCacheFileSystem _fileSystem;
+        private readonly EFileVerifyLevel _fileVerifyLevel;
+        private List<VerifyFileElement> _waitingList;
+        private List<VerifyFileElement> _verifyingList;
+        private int _verifyMaxNum;
+        private int _verifyTotalCount;
+        private float _verifyStartTime;
+        private int _succeedCount;
+        private int _failedCount;
+        private ESteps _steps = ESteps.None;
+
+
+        internal VerifyCacheFilesOperation(DefaultCacheFileSystem fileSystem, List<VerifyFileElement> elements)
+        {
+            _fileSystem = fileSystem;
+            _waitingList = elements;
+            _fileVerifyLevel = fileSystem.FileVerifyLevel;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.InitVerify;
+            _verifyStartTime = UnityEngine.Time.realtimeSinceStartup;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.InitVerify)
+            {
+                int fileCount = _waitingList.Count;
+
+                // 设置同时验证的最大数
+                ThreadPool.GetMaxThreads(out int workerThreads, out int ioThreads);
+                YooLogger.Log($"Work threads : {workerThreads}, IO threads : {ioThreads}");
+                int threads = Math.Min(workerThreads, ioThreads);
+                _verifyMaxNum = Math.Min(threads, _fileSystem.FileVerifyMaxConcurrency);
+                _verifyTotalCount = fileCount;
+                if (_verifyMaxNum < 1)
+                    _verifyMaxNum = 1;
+
+                YooLogger.Log($"Verify max concurrency : {_verifyMaxNum}");
+                _verifyingList = new List<VerifyFileElement>(_verifyMaxNum);
+                _steps = ESteps.UpdateVerify;
+            }
+
+            if (_steps == ESteps.UpdateVerify)
+            {
+                // 检测校验结果
+                for (int i = _verifyingList.Count - 1; i >= 0; i--)
+                {
+                    var verifyElement = _verifyingList[i];
+                    int result = verifyElement.Result;
+                    if (result != 0)
+                    {
+                        _verifyingList.RemoveAt(i);
+                        RecordVerifyFile(verifyElement);
+                    }
+                }
+
+                Progress = GetProgress();
+                if (_waitingList.Count == 0 && _verifyingList.Count == 0)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                    float costTime = UnityEngine.Time.realtimeSinceStartup - _verifyStartTime;
+                    YooLogger.Log($"Verify cache files elapsed time {costTime:f1} seconds");
+                }
+
+                for (int i = _waitingList.Count - 1; i >= 0; i--)
+                {
+                    if (OperationSystem.IsBusy)
+                        break;
+
+                    if (_verifyingList.Count >= _verifyMaxNum)
+                        break;
+
+                    var element = _waitingList[i];
+                    bool succeed = ThreadPool.QueueUserWorkItem(new WaitCallback(VerifyInThread), element);
+                    if (succeed)
+                    {
+                        _waitingList.RemoveAt(i);
+                        _verifyingList.Add(element);
+                    }
+                    else
+                    {
+                        YooLogger.Warning("The thread pool is failed queued.");
+                        break;
+                    }
+                }
+            }
+        }
+
+        private float GetProgress()
+        {
+            if (_verifyTotalCount == 0)
+                return 1f;
+            return (float)(_succeedCount + _failedCount) / _verifyTotalCount;
+        }
+        private void VerifyInThread(object obj)
+        {
+            VerifyFileElement element = (VerifyFileElement)obj;
+            int verifyResult = (int)VerifyingCacheFile(element, _fileVerifyLevel);
+            element.Result = verifyResult;
+        }
+        private void RecordVerifyFile(VerifyFileElement element)
+        {
+            if (element.Result == (int)EFileVerifyResult.Succeed)
+            {
+                _succeedCount++;
+                var recordFileElement = new RecordFileElement(element.InfoFilePath, element.DataFilePath, element.DataFileCRC, element.DataFileSize);
+                _fileSystem.RecordBundleFile(element.BundleGUID, recordFileElement);
+            }
+            else
+            {
+                _failedCount++;
+                YooLogger.Warning($"Failed to verify file {element.Result} and delete files : {element.FileRootPath}");
+                element.DeleteFiles();
+            }
+        }
+
+        /// <summary>
+        /// 验证缓存文件（子线程内操作）
+        /// </summary>
+        private EFileVerifyResult VerifyingCacheFile(VerifyFileElement element, EFileVerifyLevel verifyLevel)
+        {
+            try
+            {
+                if (verifyLevel == EFileVerifyLevel.Low)
+                {
+                    if (File.Exists(element.InfoFilePath) == false)
+                        return EFileVerifyResult.InfoFileNotExisted;
+                    if (File.Exists(element.DataFilePath) == false)
+                        return EFileVerifyResult.DataFileNotExisted;
+                    return EFileVerifyResult.Succeed;
+                }
+                else
+                {
+                    if (File.Exists(element.InfoFilePath) == false)
+                        return EFileVerifyResult.InfoFileNotExisted;
+
+                    // 解析信息文件获取验证数据
+                    _fileSystem.ReadBundleInfoFile(element.InfoFilePath, out element.DataFileCRC, out element.DataFileSize);
+                }
+            }
+            catch (Exception)
+            {
+                return EFileVerifyResult.Exception;
+            }
+
+            return FileVerifyHelper.FileVerify(element.DataFilePath, element.DataFileSize, element.DataFileCRC, verifyLevel);
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/VerifyCacheFilesOperation.cs.meta

@@ -0,0 +1,11 @@
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+guid: cc4a1a0e478a24344bd01ce96b360fd5
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/VerifyTempFileOperation.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Threading;
+
+namespace YooAsset
+{
+    /// <summary>
+    /// 下载文件验证（线程版）
+    /// </summary>
+    internal sealed class VerifyTempFileOperation : AsyncOperationBase
+    {
+        private enum ESteps
+        {
+            None,
+            VerifyFile,
+            Waiting,
+            Done,
+        }
+
+        private readonly TempFileElement _element;
+        private ESteps _steps = ESteps.None;
+
+        /// <summary>
+        /// 验证结果
+        /// </summary>
+        public EFileVerifyResult VerifyResult { private set; get; }
+
+
+        internal VerifyTempFileOperation(TempFileElement element)
+        {
+            _element = element;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.VerifyFile;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.VerifyFile)
+            {
+                bool succeed = ThreadPool.QueueUserWorkItem(new WaitCallback(VerifyInThread), _element);
+                if (succeed)
+                {
+                    _steps = ESteps.Waiting;
+                }
+            }
+
+            if (_steps == ESteps.Waiting)
+            {
+                int result = _element.Result;
+                if (result == 0)
+                    return;
+
+                VerifyResult = (EFileVerifyResult)result;
+                if (VerifyResult == EFileVerifyResult.Succeed)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                }
+                else
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = $"Failed to verify file : {_element.TempFilePath} ! ErrorCode : {VerifyResult}";
+                }
+            }
+        }
+        internal override void InternalWaitForAsyncComplete()
+        {
+            while (true)
+            {
+                //TODO 等待子线程验证文件完毕，该操作会挂起主线程！
+                InternalUpdate();
+                if (IsDone)
+                    break;
+
+                // 短暂休眠避免完全卡死
+                System.Threading.Thread.Sleep(1);
+            }
+        }
+
+        private void VerifyInThread(object obj)
+        {
+            TempFileElement element = (TempFileElement)obj;
+            int result = (int)FileVerifyHelper.FileVerify(element.TempFilePath, element.TempFileSize, element.TempFileCRC, EFileVerifyLevel.High);
+            element.Result = result;
+        }
+    }
+}

Assets/03.YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/VerifyTempFileOperation.cs.meta

@@ -0,0 +1,11 @@
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