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WXAssetBundleProvider.cs
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#if UNITY_2022_1_OR_NEWER
#define UNLOAD_BUNDLE_ASYNC
#endif
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using UnityEngine.Networking;
using UnityEngine.ResourceManagement.AsyncOperations;
using UnityEngine.ResourceManagement.Exceptions;
using UnityEngine.ResourceManagement.ResourceLocations;
using UnityEngine.ResourceManagement.Util;
using WeChatWASM;
namespace UnityEngine.ResourceManagement
{
internal class WXWebRequestQueueOperation
{
private bool m_Completed = false;
public UnityWebRequestAsyncOperation Result;
public Action<UnityWebRequestAsyncOperation> OnComplete;
public bool IsDone
{
get { return m_Completed || Result != null; }
}
internal UnityWebRequest m_WebRequest;
public WXWebRequestQueueOperation(UnityWebRequest request)
{
m_WebRequest = request;
}
internal void Complete(UnityWebRequestAsyncOperation asyncOp)
{
m_Completed = true;
Result = asyncOp;
OnComplete?.Invoke(Result);
}
}
internal static class WebRequestQueue
{
internal static int s_MaxRequest = 500;
internal static Queue<WXWebRequestQueueOperation> s_QueuedOperations =
new Queue<WXWebRequestQueueOperation>();
internal static List<UnityWebRequestAsyncOperation> s_ActiveRequests =
new List<UnityWebRequestAsyncOperation>();
public static void SetMaxConcurrentRequests(int maxRequests)
{
if (maxRequests < 1)
throw new ArgumentException("MaxRequests must be 1 or greater.", "maxRequests");
s_MaxRequest = maxRequests;
}
public static WXWebRequestQueueOperation QueueRequest(UnityWebRequest request)
{
WXWebRequestQueueOperation queueOperation = new WXWebRequestQueueOperation(request);
if (s_ActiveRequests.Count < s_MaxRequest)
{
UnityWebRequestAsyncOperation webRequestAsyncOp = null;
try
{
webRequestAsyncOp = request.SendWebRequest();
s_ActiveRequests.Add(webRequestAsyncOp);
if (webRequestAsyncOp.isDone)
OnWebAsyncOpComplete(webRequestAsyncOp);
else
webRequestAsyncOp.completed += OnWebAsyncOpComplete;
}
catch (Exception e)
{
Debug.LogError(e.Message);
}
queueOperation.Complete(webRequestAsyncOp);
}
else
s_QueuedOperations.Enqueue(queueOperation);
return queueOperation;
}
internal static void WaitForRequestToBeActive(
WXWebRequestQueueOperation request,
int millisecondsTimeout
)
{
var completedRequests = new List<UnityWebRequestAsyncOperation>();
while (s_QueuedOperations.Contains(request))
{
completedRequests.Clear();
foreach (UnityWebRequestAsyncOperation webRequestAsyncOp in s_ActiveRequests)
{
if (WXUnityWebRequestUtilities.IsAssetBundleDownloaded(webRequestAsyncOp))
completedRequests.Add(webRequestAsyncOp);
}
foreach (UnityWebRequestAsyncOperation webRequestAsyncOp in completedRequests)
{
bool requestIsActive = s_QueuedOperations.Peek() == request;
webRequestAsyncOp.completed -= OnWebAsyncOpComplete;
OnWebAsyncOpComplete(webRequestAsyncOp);
if (requestIsActive)
return;
}
System.Threading.Thread.Sleep(millisecondsTimeout);
}
}
private static void OnWebAsyncOpComplete(AsyncOperation operation)
{
s_ActiveRequests.Remove((operation as UnityWebRequestAsyncOperation));
if (s_QueuedOperations.Count > 0)
{
var nextQueuedOperation = s_QueuedOperations.Dequeue();
var webRequestAsyncOp = nextQueuedOperation.m_WebRequest.SendWebRequest();
webRequestAsyncOp.completed += OnWebAsyncOpComplete;
s_ActiveRequests.Add(webRequestAsyncOp);
nextQueuedOperation.Complete(webRequestAsyncOp);
}
}
}
}
namespace UnityEngine.ResourceManagement.ResourceProviders
{
[DisplayName("Assets from WXBundles Provider")]
public class WXBundledAssetProvider : ResourceProviderBase
{
internal class InternalOp
{
AssetBundle m_AssetBundle;
AssetBundleRequest m_PreloadRequest;
AssetBundleRequest m_RequestOperation;
object m_Result;
ProvideHandle m_ProvideHandle;
string subObjectName = null;
internal static T LoadBundleFromDependecies<T>(IList<object> results)
where T : class, IAssetBundleResource
{
if (results == null || results.Count == 0)
return default(T);
IAssetBundleResource bundle = null;
bool firstBundleWrapper = true;
for (int i = 0; i < results.Count; i++)
{
var abWrapper = results[i] as IAssetBundleResource;
if (abWrapper != null)
{
//only use the first asset bundle, even if it is invalid
abWrapper.GetAssetBundle();
if (firstBundleWrapper)
bundle = abWrapper;
firstBundleWrapper = false;
}
}
return bundle as T;
}
public void Start(ProvideHandle provideHandle)
{
provideHandle.SetProgressCallback(ProgressCallback);
provideHandle.SetWaitForCompletionCallback(WaitForCompletionHandler);
subObjectName = null;
m_ProvideHandle = provideHandle;
m_RequestOperation = null;
List<object> deps = new List<object>(); // TODO: garbage. need to pass actual count and reuse the list
m_ProvideHandle.GetDependencies(deps);
var bundleResource = LoadBundleFromDependecies<IAssetBundleResource>(deps);
if (bundleResource == null)
{
m_ProvideHandle.Complete<AssetBundle>(
null,
false,
new Exception(
"Unable to load dependent bundle from location "
+ m_ProvideHandle.Location
)
);
}
else
{
m_AssetBundle = bundleResource.GetAssetBundle();
if (m_AssetBundle == null)
{
m_ProvideHandle.Complete<AssetBundle>(
null,
false,
new Exception(
"Unable to load dependent bundle from location "
+ m_ProvideHandle.Location
)
);
return;
}
var assetBundleResource = bundleResource as WXAssetBundleResource;
if (assetBundleResource != null)
m_PreloadRequest = assetBundleResource.GetAssetPreloadRequest();
if (m_PreloadRequest == null || m_PreloadRequest.isDone)
BeginAssetLoad();
else
m_PreloadRequest.completed += operation => BeginAssetLoad();
}
}
internal static bool ExtractKeyAndSubKey(
object keyObj,
out string mainKey,
out string subKey
)
{
var key = keyObj as string;
if (key != null)
{
var i = key.IndexOf('[');
if (i > 0)
{
var j = key.LastIndexOf(']');
if (j > i)
{
mainKey = key.Substring(0, i);
subKey = key.Substring(i + 1, j - (i + 1));
return true;
}
}
}
mainKey = null;
subKey = null;
return false;
}
private void BeginAssetLoad()
{
if (m_AssetBundle == null)
{
m_ProvideHandle.Complete<AssetBundle>(
null,
false,
new Exception(
"Unable to load dependent bundle from location "
+ m_ProvideHandle.Location
)
);
}
else
{
var assetPath = m_ProvideHandle.ResourceManager.TransformInternalId(
m_ProvideHandle.Location
);
if (m_ProvideHandle.Type.IsArray)
{
#if !UNITY_2021_1_OR_NEWER
if (AsyncOperationHandle.IsWaitingForCompletion)
{
GetArrayResult(
m_AssetBundle.LoadAssetWithSubAssets(
assetPath,
m_ProvideHandle.Type.GetElementType()
)
);
CompleteOperation();
}
else
#endif
m_RequestOperation = m_AssetBundle.LoadAssetWithSubAssetsAsync(
assetPath,
m_ProvideHandle.Type.GetElementType()
);
}
else if (
m_ProvideHandle.Type.IsGenericType
&& typeof(IList<>) == m_ProvideHandle.Type.GetGenericTypeDefinition()
)
{
#if !UNITY_2021_1_OR_NEWER
if (AsyncOperationHandle.IsWaitingForCompletion)
{
GetListResult(
m_AssetBundle.LoadAssetWithSubAssets(
assetPath,
m_ProvideHandle.Type.GetGenericArguments()[0]
)
);
CompleteOperation();
}
else
#endif
m_RequestOperation = m_AssetBundle.LoadAssetWithSubAssetsAsync(
assetPath,
m_ProvideHandle.Type.GetGenericArguments()[0]
);
}
else
{
if (ExtractKeyAndSubKey(assetPath, out string mainPath, out string subKey))
{
subObjectName = subKey;
#if !UNITY_2021_1_OR_NEWER
if (AsyncOperationHandle.IsWaitingForCompletion)
{
GetAssetSubObjectResult(
m_AssetBundle.LoadAssetWithSubAssets(
mainPath,
m_ProvideHandle.Type
)
);
CompleteOperation();
}
else
#endif
m_RequestOperation = m_AssetBundle.LoadAssetWithSubAssetsAsync(
mainPath,
m_ProvideHandle.Type
);
}
else
{
#if !UNITY_2021_1_OR_NEWER
if (AsyncOperationHandle.IsWaitingForCompletion)
{
GetAssetResult(
m_AssetBundle.LoadAsset(assetPath, m_ProvideHandle.Type)
);
CompleteOperation();
}
else
#endif
m_RequestOperation = m_AssetBundle.LoadAssetAsync(
assetPath,
m_ProvideHandle.Type
);
}
}
if (m_RequestOperation != null)
{
if (m_RequestOperation.isDone)
ActionComplete(m_RequestOperation);
else
m_RequestOperation.completed += ActionComplete;
}
}
}
private bool WaitForCompletionHandler()
{
if (m_PreloadRequest != null && !m_PreloadRequest.isDone)
return m_PreloadRequest.asset == null;
if (m_Result != null)
return true;
if (m_RequestOperation == null)
return false;
if (m_RequestOperation.isDone)
return true;
return m_RequestOperation.asset != null;
}
private void ActionComplete(AsyncOperation obj)
{
if (m_RequestOperation != null)
{
if (m_ProvideHandle.Type.IsArray)
GetArrayResult(m_RequestOperation.allAssets);
else if (
m_ProvideHandle.Type.IsGenericType
&& typeof(IList<>) == m_ProvideHandle.Type.GetGenericTypeDefinition()
)
GetListResult(m_RequestOperation.allAssets);
else if (string.IsNullOrEmpty(subObjectName))
GetAssetResult(m_RequestOperation.asset);
else
GetAssetSubObjectResult(m_RequestOperation.allAssets);
}
CompleteOperation();
}
private void GetArrayResult(Object[] allAssets)
{
m_Result = ResourceManagerConfig.CreateArrayResult(m_ProvideHandle.Type, allAssets);
}
private void GetListResult(Object[] allAssets)
{
m_Result = ResourceManagerConfig.CreateListResult(m_ProvideHandle.Type, allAssets);
}
private void GetAssetResult(Object asset)
{
m_Result =
(asset != null && m_ProvideHandle.Type.IsAssignableFrom(asset.GetType()))
? asset
: null;
}
private void GetAssetSubObjectResult(Object[] allAssets)
{
foreach (var o in allAssets)
{
if (o.name == subObjectName)
{
if (m_ProvideHandle.Type.IsAssignableFrom(o.GetType()))
{
m_Result = o;
break;
}
}
}
}
void CompleteOperation()
{
Exception e =
m_Result == null
? new Exception(
$"Unable to load asset of type {m_ProvideHandle.Type} from location {m_ProvideHandle.Location}."
)
: null;
m_ProvideHandle.Complete(m_Result, m_Result != null, e);
}
public float ProgressCallback()
{
return m_RequestOperation != null ? m_RequestOperation.progress : 0.0f;
}
}
/// <inheritdoc/>
public override void Provide(ProvideHandle provideHandle)
{
new InternalOp().Start(provideHandle);
}
}
internal class WXAssetBundleResource : IAssetBundleResource, IUpdateReceiver
{
internal enum LoadType
{
None,
Local,
Web
}
AssetBundle m_AssetBundle;
DownloadHandlerWXAssetBundle m_downloadHandler;
AsyncOperation m_RequestOperation;
WXWebRequestQueueOperation m_WebRequestQueueOperation;
internal ProvideHandle m_ProvideHandle;
internal AssetBundleRequestOptions m_Options;
[NonSerialized]
bool m_WebRequestCompletedCallbackCalled = false;
int m_Retries;
long m_BytesToDownload;
long m_DownloadedBytes;
bool m_Completed = false;
#if UNLOAD_BUNDLE_ASYNC
AssetBundleUnloadOperation m_UnloadOperation;
#endif
const int k_WaitForWebRequestMainThreadSleep = 1;
string m_TransformedInternalId;
AssetBundleRequest m_PreloadRequest;
bool m_PreloadCompleted = false;
ulong m_LastDownloadedByteCount = 0;
float m_TimeoutTimer = 0;
int m_TimeoutOverFrames = 0;
private bool HasTimedOut => m_TimeoutTimer >= m_Options.Timeout && m_TimeoutOverFrames > 5;
internal long BytesToDownload
{
get
{
if (m_BytesToDownload == -1)
{
if (m_Options != null)
m_BytesToDownload = m_Options.ComputeSize(
m_ProvideHandle.Location,
m_ProvideHandle.ResourceManager
);
else
m_BytesToDownload = 0;
}
return m_BytesToDownload;
}
}
internal UnityWebRequest CreateWebRequest(IResourceLocation loc)
{
var url = m_ProvideHandle.ResourceManager.TransformInternalId(loc);
return CreateWebRequest(url);
}
internal UnityWebRequest CreateWebRequest(string url)
{
if (m_Options == null)
return WXAssetBundle.GetAssetBundle(url);
UnityWebRequest webRequest;
if (!string.IsNullOrEmpty(m_Options.Hash))
{
CachedAssetBundle cachedBundle = new CachedAssetBundle(
m_Options.BundleName,
Hash128.Parse(m_Options.Hash)
);
#if ENABLE_CACHING
if (m_Options.UseCrcForCachedBundle || !Caching.IsVersionCached(cachedBundle))
webRequest = UnityWebRequestAssetBundle.GetAssetBundle(
url,
cachedBundle,
m_Options.Crc
);
else
webRequest = UnityWebRequestAssetBundle.GetAssetBundle(url, cachedBundle);
#else
webRequest = UnityWebRequestAssetBundle.GetAssetBundle(
url,
cachedBundle,
m_Options.Crc
);
#endif
}
else
webRequest = WXAssetBundle.GetAssetBundle(url, m_Options.Crc);
if (m_Options.RedirectLimit > 0)
webRequest.redirectLimit = m_Options.RedirectLimit;
if (m_ProvideHandle.ResourceManager.CertificateHandlerInstance != null)
{
webRequest.certificateHandler = m_ProvideHandle
.ResourceManager
.CertificateHandlerInstance;
webRequest.disposeCertificateHandlerOnDispose = false;
}
m_ProvideHandle.ResourceManager.WebRequestOverride?.Invoke(webRequest);
return webRequest;
}
internal AssetBundleRequest GetAssetPreloadRequest()
{
if (m_PreloadCompleted || GetAssetBundle() == null)
return null;
if (m_Options.AssetLoadMode == AssetLoadMode.AllPackedAssetsAndDependencies)
{
#if !UNITY_2021_1_OR_NEWER
if (AsyncOperationHandle.IsWaitingForCompletion)
{
m_AssetBundle.LoadAllAssets();
m_PreloadCompleted = true;
return null;
}
#endif
if (m_PreloadRequest == null)
{
m_PreloadRequest = m_AssetBundle.LoadAllAssetsAsync();
m_PreloadRequest.completed += operation => m_PreloadCompleted = true;
}
return m_PreloadRequest;
}
return null;
}
float PercentComplete()
{
return m_RequestOperation != null ? m_RequestOperation.progress : 0.0f;
}
DownloadStatus GetDownloadStatus()
{
if (m_Options == null)
return default;
var status = new DownloadStatus()
{
TotalBytes = BytesToDownload,
IsDone = PercentComplete() >= 1f
};
if (BytesToDownload > 0)
{
if (
m_WebRequestQueueOperation != null
&& string.IsNullOrEmpty(m_WebRequestQueueOperation.m_WebRequest.error)
)
m_DownloadedBytes = (long)(
m_WebRequestQueueOperation.m_WebRequest.downloadedBytes
);
else if (
m_RequestOperation != null
&& m_RequestOperation is UnityWebRequestAsyncOperation operation
&& string.IsNullOrEmpty(operation.webRequest.error)
)
m_DownloadedBytes = (long)operation.webRequest.downloadedBytes;
}
status.DownloadedBytes = m_DownloadedBytes;
return status;
}
/// <summary>
/// Get the asset bundle object managed by this resource. This call may force the bundle to load if not already loaded.
/// </summary>
/// <returns>The asset bundle.</returns>
public AssetBundle GetAssetBundle()
{
if (m_AssetBundle == null)
{
if (m_downloadHandler != null)
{
m_AssetBundle = m_downloadHandler.assetBundle;
m_downloadHandler.Dispose();
m_downloadHandler = null;
}
else if (m_RequestOperation is WXAssetBundleRequest)
{
m_AssetBundle = (m_RequestOperation as WXAssetBundleRequest).assetBundle;
}
}
return m_AssetBundle;
}
#if UNLOAD_BUNDLE_ASYNC
void OnUnloadOperationComplete(AsyncOperation op)
{
m_UnloadOperation = null;
BeginOperation();
}
#endif
#if UNLOAD_BUNDLE_ASYNC
internal void Start(ProvideHandle provideHandle, AssetBundleUnloadOperation unloadOp)
#else
internal void Start(ProvideHandle provideHandle)
#endif
{
m_Retries = 0;
m_AssetBundle = null;
m_downloadHandler = null;
m_RequestOperation = null;
m_WebRequestCompletedCallbackCalled = false;
m_ProvideHandle = provideHandle;
m_Options = m_ProvideHandle.Location.Data as AssetBundleRequestOptions;
m_BytesToDownload = -1;
m_ProvideHandle.SetProgressCallback(PercentComplete);
m_ProvideHandle.SetDownloadProgressCallbacks(GetDownloadStatus);
m_ProvideHandle.SetWaitForCompletionCallback(WaitForCompletionHandler);
#if UNLOAD_BUNDLE_ASYNC
Debug.LogError("UNLOAD_BUNDLE_ASYNC");
m_UnloadOperation = unloadOp;
if (m_UnloadOperation != null && !m_UnloadOperation.isDone)
m_UnloadOperation.completed += OnUnloadOperationComplete;
else
#endif
BeginOperation();
}
private bool WaitForCompletionHandler()
{
#if UNLOAD_BUNDLE_ASYNC
if (m_UnloadOperation != null && !m_UnloadOperation.isDone)
{
m_UnloadOperation.completed -= OnUnloadOperationComplete;
m_UnloadOperation.WaitForCompletion();
m_UnloadOperation = null;
BeginOperation();
}
#endif
if (m_RequestOperation == null)
{
if (m_WebRequestQueueOperation == null)
return false;
else
WebRequestQueue.WaitForRequestToBeActive(
m_WebRequestQueueOperation,
k_WaitForWebRequestMainThreadSleep
);
}
//We don't want to wait for request op to complete if it's a LoadFromFileAsync. Only UWR will complete in a tight loop like this.
if (m_RequestOperation is UnityWebRequestAsyncOperation op)
{
while (!WXUnityWebRequestUtilities.IsAssetBundleDownloaded(op))
System.Threading.Thread.Sleep(k_WaitForWebRequestMainThreadSleep);
}
if (
m_RequestOperation is UnityWebRequestAsyncOperation
&& !m_WebRequestCompletedCallbackCalled
)
{
WebRequestOperationCompleted(m_RequestOperation);
m_RequestOperation.completed -= WebRequestOperationCompleted;
}
var assetBundle = GetAssetBundle();
if (!m_Completed && m_RequestOperation.isDone)
{
m_ProvideHandle.Complete(this, m_AssetBundle != null, null);
m_Completed = true;
}
return m_Completed;
}
void AddCallbackInvokeIfDone(AsyncOperation operation, Action<AsyncOperation> callback)
{
if (operation.isDone)
callback(operation);
else
operation.completed += callback;
}
internal static void GetLoadInfo(
ProvideHandle handle,
out LoadType loadType,
out string path
)
{
GetLoadInfo(handle.Location, handle.ResourceManager, out loadType, out path);
}
internal static void GetLoadInfo(
IResourceLocation location,
ResourceManager resourceManager,
out LoadType loadType,
out string path
)
{
var options = location?.Data as AssetBundleRequestOptions;
if (options == null)
{
loadType = LoadType.None;
path = null;
return;
}
path = resourceManager.TransformInternalId(location);
if (Application.platform == RuntimePlatform.Android && path.StartsWith("jar:"))
loadType = options.UseUnityWebRequestForLocalBundles
? LoadType.Web
: LoadType.Local;
else if (ResourceManagerConfig.ShouldPathUseWebRequest(path))
loadType = LoadType.Web;
else if (options.UseUnityWebRequestForLocalBundles)
{
path = "file:///" + Path.GetFullPath(path);
loadType = LoadType.Web;
}
else
loadType = LoadType.Local;
//Debug.Log(loadType);
//Debug.Log(path);
}
private void BeginOperation()
{
m_DownloadedBytes = 0;
GetLoadInfo(m_ProvideHandle, out LoadType loadType, out m_TransformedInternalId);
if (loadType == LoadType.Local)
{
#if !UNITY_2021_1_OR_NEWER
if (AsyncOperationHandle.IsWaitingForCompletion)
CompleteBundleLoad(
AssetBundle.LoadFromFile(
m_TransformedInternalId,
m_Options == null ? 0 : m_Options.Crc
)
);
else
#endif
{
m_RequestOperation = AssetBundle.LoadFromFileAsync(
m_TransformedInternalId,
m_Options == null ? 0 : m_Options.Crc
);
AddCallbackInvokeIfDone(m_RequestOperation, LocalRequestOperationCompleted);
}
}
else if (loadType == LoadType.Web)
{
m_WebRequestCompletedCallbackCalled = false;
var req = CreateWebRequest(m_TransformedInternalId);
#if ENABLE_ASYNC_ASSETBUNDLE_UWR
Debug.LogError("ENABLE_ASYNC_ASSETBUNDLE_UWR");
Debug.LogError(!(m_ProvideHandle.Location is DownloadOnlyLocation));
((DownloadHandlerAssetBundle)req.downloadHandler).autoLoadAssetBundle = !(
m_ProvideHandle.Location is DownloadOnlyLocation
);
#endif
req.disposeDownloadHandlerOnDispose = false;
m_WebRequestQueueOperation = WebRequestQueue.QueueRequest(req);
if (m_WebRequestQueueOperation.IsDone)
BeginWebRequestOperation(m_WebRequestQueueOperation.Result);
else
m_WebRequestQueueOperation.OnComplete += asyncOp =>
BeginWebRequestOperation(asyncOp);
}
else
{
m_RequestOperation = null;
m_ProvideHandle.Complete<WXAssetBundleResource>(
null,
false,
new RemoteProviderException(
string.Format(
"Invalid path in AssetBundleProvider: '{0}'.",
m_TransformedInternalId
),
m_ProvideHandle.Location
)
);
m_Completed = true;
}
}
private void BeginWebRequestOperation(AsyncOperation asyncOp)
{
m_TimeoutTimer = 0;
m_TimeoutOverFrames = 0;
m_LastDownloadedByteCount = 0;
m_RequestOperation = asyncOp;
if (m_RequestOperation == null || m_RequestOperation.isDone)
WebRequestOperationCompleted(m_RequestOperation);
else
{
if (m_Options.Timeout > 0)
m_ProvideHandle.ResourceManager.AddUpdateReceiver(this);
m_RequestOperation.completed += WebRequestOperationCompleted;
}
}
public void Update(float unscaledDeltaTime)
{
if (
m_RequestOperation != null
&& m_RequestOperation is UnityWebRequestAsyncOperation operation
&& !operation.isDone
)
{
if (m_LastDownloadedByteCount != operation.webRequest.downloadedBytes)
{
m_TimeoutTimer = 0;
m_TimeoutOverFrames = 0;
m_LastDownloadedByteCount = operation.webRequest.downloadedBytes;
}
else
{
m_TimeoutTimer += unscaledDeltaTime;
if (HasTimedOut)
operation.webRequest.Abort();
m_TimeoutOverFrames++;
}
}
}
private void LocalRequestOperationCompleted(AsyncOperation op)
{
CompleteBundleLoad((op as WXAssetBundleRequest).assetBundle);
}
private void CompleteBundleLoad(AssetBundle bundle)
{
m_AssetBundle = bundle;
if (m_AssetBundle != null)
m_ProvideHandle.Complete(this, true, null);
else
m_ProvideHandle.Complete<WXAssetBundleResource>(
null,
false,
new RemoteProviderException(
string.Format(
"Invalid path in AssetBundleProvider: '{0}'.",
m_TransformedInternalId
),
m_ProvideHandle.Location
)
);
m_Completed = true;
}
private void WebRequestOperationCompleted(AsyncOperation op)
{
if (m_WebRequestCompletedCallbackCalled)
return;
if (m_Options.Timeout > 0)
m_ProvideHandle.ResourceManager.RemoveUpdateReciever(this);
m_WebRequestCompletedCallbackCalled = true;
UnityWebRequestAsyncOperation remoteReq = op as UnityWebRequestAsyncOperation;
var webReq = remoteReq?.webRequest;
m_downloadHandler = webReq?.downloadHandler as DownloadHandlerWXAssetBundle;
WXUnityWebRequestResult uwrResult = null;
if (
webReq != null
&& !WXUnityWebRequestUtilities.RequestHasErrors(webReq, out uwrResult)
)
{
if (!m_Completed)
{
m_ProvideHandle.Complete(this, true, null);
m_Completed = true;
}
#if ENABLE_CACHING
if (
!string.IsNullOrEmpty(m_Options.Hash)
&& m_Options.ClearOtherCachedVersionsWhenLoaded
)
Caching.ClearOtherCachedVersions(
m_Options.BundleName,
Hash128.Parse(m_Options.Hash)
);
#endif
}
else
{
if (HasTimedOut)
uwrResult.Error = "Request timeout";
webReq = m_WebRequestQueueOperation.m_WebRequest;
if (uwrResult == null)
uwrResult = new WXUnityWebRequestResult(
m_WebRequestQueueOperation.m_WebRequest
);
m_downloadHandler = webReq.downloadHandler as DownloadHandlerWXAssetBundle;
m_downloadHandler.Dispose();
m_downloadHandler = null;
bool forcedRetry = false;
string message =
$"Web request failed, retrying ({m_Retries}/{m_Options.RetryCount})...\n{uwrResult}";
#if ENABLE_CACHING
if (!string.IsNullOrEmpty(m_Options.Hash))
{
CachedAssetBundle cab = new CachedAssetBundle(
m_Options.BundleName,
Hash128.Parse(m_Options.Hash)
);
if (Caching.IsVersionCached(cab))
{
message =
$"Web request failed to load from cache. The cached AssetBundle will be cleared from the cache and re-downloaded. Retrying...\n{uwrResult}";
Caching.ClearCachedVersion(cab.name, cab.hash);
if (m_Options.RetryCount == 0 && m_Retries == 0)
{
Debug.LogFormat(message);
BeginOperation();
m_Retries++; //Will prevent us from entering an infinite loop of retrying if retry count is 0
forcedRetry = true;
}
}
}
#endif
if (!forcedRetry)
{
if (m_Retries < m_Options.RetryCount && uwrResult.ShouldRetryDownloadError())
{
m_Retries++;
Debug.LogFormat(message);
BeginOperation();
}
else
{
var exception = new WXRemoteProviderException(
$"Unable to load asset bundle from : {webReq.url}",
m_ProvideHandle.Location,
uwrResult
);
m_ProvideHandle.Complete<WXAssetBundleResource>(null, false, exception);
m_Completed = true;
}
}
}
webReq.Dispose();
}
/// <summary>
/// Unloads all resources associated with this asset bundle.
/// </summary>
#if UNLOAD_BUNDLE_ASYNC
public bool Unload(out AssetBundleUnloadOperation unloadOp)
#else
public void Unload()
#endif
{
#if UNLOAD_BUNDLE_ASYNC
unloadOp = null;
if (m_AssetBundle != null)
{
unloadOp = m_AssetBundle.UnloadAsync(true);
m_AssetBundle = null;