void AssetsManager::update()
{
if (!_localManifest->isLoaded())
{
CCLOG("AssetsManager : No local manifest file found error.\n");
dispatchUpdateEvent(EventAssetsManager::EventCode::ERROR_NO_LOCAL_MANIFEST);
return;
}
_waitToUpdate = true;
switch (_updateState) {
case State::UNCHECKED:
{
_updateState = State::PREDOWNLOAD_VERSION;
}
case State::PREDOWNLOAD_VERSION:
{
downloadVersion();
}
break;
case State::VERSION_LOADED:
{
parseVersion();
}
break;
case State::PREDOWNLOAD_MANIFEST:
{
downloadManifest();
}
break;
case State::MANIFEST_LOADED:
{
parseManifest();
}
break;
case State::FAIL_TO_UPDATE:
case State::NEED_UPDATE:
{
// Manifest not loaded yet
if (!_remoteManifest->isLoaded())
{
_waitToUpdate = true;
_updateState = State::PREDOWNLOAD_MANIFEST;
downloadManifest();
}
else
{
startUpdate();
}
}
break;
case State::UP_TO_DATE:
case State::UPDATING:
_waitToUpdate = false;
break;
default:
break;
}
}
void AssetsManagerEx::downloadManifest()
{
if (_updateState != State::PREDOWNLOAD_MANIFEST)
return;
std::string manifestUrl;
if (_remoteManifest->isVersionLoaded()) {
manifestUrl = _remoteManifest->getManifestFileUrl();
} else {
manifestUrl = _localManifest->getManifestFileUrl();
}
if (manifestUrl.size() > 0)
{
_updateState = State::DOWNLOADING_MANIFEST;
// Download version file asynchronously
_downloader->createDownloadFileTask(manifestUrl, _tempManifestPath, MANIFEST_ID);
}
// No manifest file found
else
{
CCLOG("AssetsManagerEx : No manifest file found, check update failed\n");
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_DOWNLOAD_MANIFEST);
_updateState = State::UNCHECKED;
}
}
void AssetsManager::loadLocalManifest(const std::string& manifestUrl)
{
// Prefer to use the cached manifest file, if not found use user configured manifest file
if (_fileUtils->isFileExist(_cacheManifestPath))
{
_localManifest->parse(_cacheManifestPath);
if (_localManifest->isLoaded())
prepareLocalManifest();
else
_fileUtils->removeFile(_cacheManifestPath);
}
// Fail to found or load cached manifest file
if (!_localManifest->isLoaded())
{
_localManifest->parse(_manifestUrl);
if (_localManifest->isLoaded())
prepareLocalManifest();
}
// Fail to load local manifest
if (!_localManifest->isLoaded())
{
CCLOG("AssetsManager : No local manifest file found error.\n");
dispatchUpdateEvent(EventAssetsManager::EventCode::ERROR_NO_LOCAL_MANIFEST);
}
}
void AssetsManagerEx::updateAssets(const DownloadUnits& assets)
{
if (!_inited){
CCLOG("AssetsManagerEx : Manifests uninited.\n");
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_NO_LOCAL_MANIFEST);
return;
}
if (_updateState != State::UPDATING && _localManifest->isLoaded() && _remoteManifest->isLoaded())
{
_updateState = State::UPDATING;
_downloadUnits.clear();
_downloadedSize.clear();
_percent = _percentByFile = _sizeCollected = _totalSize = 0;
_totalWaitToDownload = _totalToDownload = (int)assets.size();
_nextSavePoint = 0;
_totalEnabled = false;
if (_totalToDownload > 0)
{
_downloadUnits = assets;
this->batchDownload();
}
else if (_totalToDownload == 0)
{
onDownloadUnitsFinished();
}
}
}
void AssetsManagerEx::checkUpdate()
{
if (_updateEntry != UpdateEntry::NONE)
{
CCLOGERROR("AssetsManagerEx::checkUpdate, updateEntry isn't NONE");
return;
}
if (!_inited){
CCLOG("AssetsManagerEx : Manifests uninited.\n");
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_NO_LOCAL_MANIFEST);
return;
}
if (!_localManifest->isLoaded())
{
CCLOG("AssetsManagerEx : No local manifest file found error.\n");
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_NO_LOCAL_MANIFEST);
return;
}
_updateEntry = UpdateEntry::CHECK_UPDATE;
switch (_updateState) {
case State::UNCHECKED:
case State::PREDOWNLOAD_VERSION:
{
downloadVersion();
}
break;
case State::UP_TO_DATE:
{
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ALREADY_UP_TO_DATE);
}
break;
case State::FAIL_TO_UPDATE:
case State::NEED_UPDATE:
{
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::NEW_VERSION_FOUND);
}
break;
default:
break;
}
}
void ModuleMgr::onError(const ModuleDownloader::Error &error)
{
// Skip version error occured
if (error.customId == MANIFEST_ID)
{
dispatchUpdateEvent(ModuleMgrEvent::EventCode::ERROR_DOWNLOAD_MANIFEST, error.customId, error.message, error.curle_code, error.curlm_code);
}
else
{
auto unitIt = _downloadUnits.find(error.customId);
// Found unit and add it to failed units
if (unitIt != _downloadUnits.end())
{
ModuleDownloader::DownloadUnit unit = unitIt->second;
_failedUnits.emplace(unit.customId, unit);
}
dispatchUpdateEvent(ModuleMgrEvent::EventCode::ERROR_UPDATING, error.customId, error.message, error.curle_code, error.curlm_code);
}
}
void AssetsManagerEx::parseVersion()
{
if (_updateState != State::VERSION_LOADED)
return;
_remoteManifest->parseVersion(_tempVersionPath);
if (!_remoteManifest->isVersionLoaded())
{
CCLOG("AssetsManagerEx : Fail to parse version file, step skipped\n");
_updateState = State::PREDOWNLOAD_MANIFEST;
downloadManifest();
}
else
{
if (_localManifest->versionGreater(_remoteManifest, _versionCompareHandle))
{
_updateState = State::UP_TO_DATE;
_fileUtils->removeDirectory(_tempStoragePath);
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ALREADY_UP_TO_DATE);
}
else
{
_updateState = State::NEED_UPDATE;
// Wait to update so continue the process
if (_updateEntry == UpdateEntry::DO_UPDATE)
{
// dispatch after checking update entry because event dispatching may modify the update entry
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::NEW_VERSION_FOUND);
_updateState = State::PREDOWNLOAD_MANIFEST;
downloadManifest();
}
else
{
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::NEW_VERSION_FOUND);
}
}
}
}
void ModuleMgr::updateSucceed()
{
// Every thing is correctly downloaded, do the following
// 1. rename temporary manifest to valid manifest
_fileUtils->renameFile(_storagePath, TEMP_MANIFEST_FILENAME, MANIFEST_FILENAME);
// 4. decompress all compressed files
decompressDownloadedZip();
// 5. Set update state
_updateState = State::UP_TO_DATE;
// 6. Notify finished event
dispatchUpdateEvent(ModuleMgrEvent::EventCode::UPDATE_FINISHED);
}
void ModuleMgr::decompressDownloadedZip()
{
// Decompress all compressed files
for (auto it = _compressedFiles.begin(); it != _compressedFiles.end(); ++it) {
std::string zipfile = *it;
if (!decompress(zipfile))
{
dispatchUpdateEvent(ModuleMgrEvent::EventCode::ERROR_DECOMPRESS, "", "Unable to decompress file " + zipfile);
}
_fileUtils->removeFile(zipfile);
}
_compressedFiles.clear();
}
void AssetsManagerEx::updateSucceed()
{
// Every thing is correctly downloaded, do the following
// 1. rename temporary manifest to valid manifest
std::string tempFileName = TEMP_MANIFEST_FILENAME;
std::string fileName = MANIFEST_FILENAME;
_fileUtils->renameFile(_tempStoragePath, tempFileName, fileName);
// 2. merge temporary storage path to storage path so that temporary version turns to cached version
if (_fileUtils->isDirectoryExist(_tempStoragePath))
{
// Merging all files in temp storage path to storage path
std::vector<std::string> files;
_fileUtils->listFilesRecursively(_tempStoragePath, &files);
int baseOffset = (int)_tempStoragePath.length();
std::string relativePath, dstPath;
for (std::vector<std::string>::iterator it = files.begin(); it != files.end(); ++it)
{
relativePath.assign((*it).substr(baseOffset));
dstPath.assign(_storagePath + relativePath);
// Create directory
if (relativePath.back() == '/')
{
_fileUtils->createDirectory(dstPath);
}
// Copy file
else
{
if (_fileUtils->isFileExist(dstPath))
{
_fileUtils->removeFile(dstPath);
}
_fileUtils->renameFile(*it, dstPath);
}
}
// Remove temp storage path
_fileUtils->removeDirectory(_tempStoragePath);
}
// 3. swap the localManifest
CC_SAFE_RELEASE(_localManifest);
_localManifest = _remoteManifest;
_localManifest->setManifestRoot(_storagePath);
_remoteManifest = nullptr;
// 4. make local manifest take effect
prepareLocalManifest();
// 5. Set update state
_updateState = State::UP_TO_DATE;
// 6. Notify finished event
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::UPDATE_FINISHED);
}
void AssetsManagerEx::onDownloadUnitsFinished()
{
// Finished with error check
if (_failedUnits.size() > 0)
{
// Save current download manifest information for resuming
_tempManifest->saveToFile(_tempManifestPath);
_updateState = State::FAIL_TO_UPDATE;
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::UPDATE_FAILED);
}
else if (_updateState == State::UPDATING)
{
updateSucceed();
}
}
void AssetsManagerEx::fileError(const std::string& identifier, const std::string& errorStr, int errorCode, int errorCodeInternal)
{
auto unitIt = _downloadUnits.find(identifier);
// Found unit and add it to failed units
if (unitIt != _downloadUnits.end())
{
_totalWaitToDownload--;
DownloadUnit unit = unitIt->second;
_failedUnits.emplace(unit.customId, unit);
}
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_UPDATING, identifier, errorStr, errorCode, errorCodeInternal);
_tempManifest->setAssetDownloadState(identifier, Manifest::DownloadState::UNSTARTED);
_currConcurrentTask = MAX(0, _currConcurrentTask-1);
queueDowload();
}
void AssetsManager::updateSucceed()
{
// Every thing is correctly downloaded, do the following
// 1. rename temporary manifest to valid manifest
_fileUtils->renameFile(_storagePath, TEMP_MANIFEST_FILENAME, MANIFEST_FILENAME);
// 2. swap the localManifest
if (_localManifest != nullptr)
_localManifest->release();
_localManifest = _remoteManifest;
_remoteManifest = nullptr;
// 3. make local manifest take effect
prepareLocalManifest();
// 4. decompress all compressed files
decompressDownloadedZip();
// 5. Set update state
_updateState = State::UP_TO_DATE;
// 6. Notify finished event
dispatchUpdateEvent(EventAssetsManager::EventCode::UPDATE_FINISHED);
}
void ModuleMgr::downloadManifest()
{
if (_updateState != State::PREDOWNLOAD_MANIFEST) {
return;
}
if (_remoteManifestUrl.size() > 0)
{
_updateState = State::DOWNLOADING_MANIFEST;
// Download version file asynchronously
_downloader->downloadAsync(_remoteManifestUrl, _remoteManifestPath, MANIFEST_ID);
}
// No manifest file found
else
{
CCLOG("ModuleMgr : No manifest file found, check update failed\n");
dispatchUpdateEvent(ModuleMgrEvent::EventCode::ERROR_DOWNLOAD_MANIFEST);
_updateState = State::UNCHECKED;
}
}
void ModuleMgr::parseManifest()
{
if (_updateState != State::MANIFEST_LOADED)
return;
_remoteManifest->parse(_remoteManifestPath);
if (!_remoteManifest->isLoaded())
{
CCLOG("ModuleMgr : Error parsing manifest file\n");
dispatchUpdateEvent(ModuleMgrEvent::EventCode::ERROR_PARSE_MANIFEST);
_updateState = State::UNCHECKED;
}
else
{
// _updateState = State::NEED_UPDATE;
// dispatchUpdateEvent(ModuleMgrEvent::EventCode::NEW_VERSION_FOUND);
startUpdate();
}
}
void AssetsManagerEx::decompressDownloadedZip(const std::string &customId, const std::string &storagePath)
{
struct AsyncData
{
std::string customId;
std::string zipFile;
bool succeed;
};
AsyncData* asyncData = new AsyncData;
asyncData->customId = customId;
asyncData->zipFile = storagePath;
asyncData->succeed = false;
std::function<void(void*)> decompressFinished = [this](void* param) {
auto dataInner = reinterpret_cast<AsyncData*>(param);
if (dataInner->succeed)
{
fileSuccess(dataInner->customId, dataInner->zipFile);
}
else
{
std::string errorMsg = "Unable to decompress file " + dataInner->zipFile;
// Ensure zip file deletion (if decompress failure cause task thread exit anormally)
_fileUtils->removeFile(dataInner->zipFile);
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_DECOMPRESS, "", errorMsg);
fileError(dataInner->customId, errorMsg);
}
delete dataInner;
};
AsyncTaskPool::getInstance()->enqueue(AsyncTaskPool::TaskType::TASK_OTHER, std::move(decompressFinished), (void*)asyncData, [this, asyncData]() {
// Decompress all compressed files
if (decompress(asyncData->zipFile))
{
asyncData->succeed = true;
}
_fileUtils->removeFile(asyncData->zipFile);
});
}
void AssetsManagerEx::onError(const network::DownloadTask& task,
int errorCode,
int errorCodeInternal,
const std::string& errorStr)
{
// Skip version error occurred
if (task.identifier == VERSION_ID)
{
CCLOG("AssetsManagerEx : Fail to download version file, step skipped\n");
_updateState = State::PREDOWNLOAD_MANIFEST;
downloadManifest();
}
else if (task.identifier == MANIFEST_ID)
{
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_DOWNLOAD_MANIFEST, task.identifier, errorStr, errorCode, errorCodeInternal);
_updateState = State::FAIL_TO_UPDATE;
}
else
{
fileError(task.identifier, errorStr, errorCode, errorCodeInternal);
}
}
void ModuleMgr::onSuccess(const std::string &srcUrl, const std::string &storagePath, const std::string &customId)
{
CCLOG("ModuleMgr::onSuccess: %s %s", customId.c_str(), storagePath.c_str());
if (customId == MANIFEST_ID)
{
_updateState = State::MANIFEST_LOADED;
parseManifest();
}
else if (customId == BATCH_UPDATE_ID)
{
// Finished with error check
if (_failedUnits.size() > 0 || _totalWaitToDownload > 0)
{
// Save current download manifest information for resuming
//_tempManifest->saveToFile(_tempManifestPath);
decompressDownloadedZip();
_updateState = State::FAIL_TO_UPDATE;
dispatchUpdateEvent(ModuleMgrEvent::EventCode::UPDATE_FAILED);
}
else
{
updateSucceed();
}
}
else
{
auto assets = _remoteManifest->getAssets();
auto assetIt = assets.find(customId);
if (assetIt != assets.end())
{
// Set download state to SUCCESSED
_remoteManifest->setAssetDownloadState(customId, ModuleManifest::DownloadState::SUCCESSED);
// Add file to need decompress list
if (assetIt->second.compressed) {
_compressedFiles.push_back(storagePath);
}
}
auto unitIt = _downloadUnits.find(customId);
if (unitIt != _downloadUnits.end())
{
// Reduce count only when unit found in _downloadUnits
_totalWaitToDownload--;
_percentByFile = 100 * (float)(_totalToDownload - _totalWaitToDownload) / _totalToDownload;
// Notify progression event
dispatchUpdateEvent(ModuleMgrEvent::EventCode::UPDATE_PROGRESSION, "");
}
// Notify asset updated event
dispatchUpdateEvent(ModuleMgrEvent::EventCode::ASSET_UPDATED, customId);
unitIt = _failedUnits.find(customId);
// Found unit and delete it
if (unitIt != _failedUnits.end())
{
// Remove from failed units list
_failedUnits.erase(unitIt);
}
}
}
void AssetsManagerEx::loadLocalManifest(const std::string& /*manifestUrl*/)
{
Manifest *cachedManifest = nullptr;
// Find the cached manifest file
if (_fileUtils->isFileExist(_cacheManifestPath))
{
cachedManifest = new (std::nothrow) Manifest();
if (cachedManifest) {
cachedManifest->parse(_cacheManifestPath);
if (!cachedManifest->isLoaded())
{
_fileUtils->removeFile(_cacheManifestPath);
CC_SAFE_RELEASE(cachedManifest);
cachedManifest = nullptr;
}
}
}
// Ensure no search path of cached manifest is used to load this manifest
std::vector<std::string> searchPaths = _fileUtils->getSearchPaths();
if (cachedManifest)
{
std::vector<std::string> cacheSearchPaths = cachedManifest->getSearchPaths();
std::vector<std::string> trimmedPaths = searchPaths;
for (auto path : cacheSearchPaths)
{
const auto pos = std::find(trimmedPaths.begin(), trimmedPaths.end(), path);
if (pos != trimmedPaths.end())
{
trimmedPaths.erase(pos);
}
}
_fileUtils->setSearchPaths(trimmedPaths);
}
// Load local manifest in app package
_localManifest->parse(_manifestUrl);
if (cachedManifest) {
// Restore search paths
_fileUtils->setSearchPaths(searchPaths);
}
if (_localManifest->isLoaded())
{
// Compare with cached manifest to determine which one to use
if (cachedManifest) {
bool localNewer = _localManifest->versionGreater(cachedManifest, _versionCompareHandle);
if (localNewer)
{
// Recreate storage, to empty the content
_fileUtils->removeDirectory(_storagePath);
_fileUtils->createDirectory(_storagePath);
CC_SAFE_RELEASE(cachedManifest);
}
else
{
CC_SAFE_RELEASE(_localManifest);
_localManifest = cachedManifest;
}
}
prepareLocalManifest();
}
// Fail to load local manifest
if (!_localManifest->isLoaded())
{
CCLOG("AssetsManagerEx : No local manifest file found error.\n");
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_NO_LOCAL_MANIFEST);
}
}
void AssetsManagerEx::startUpdate()
{
if (_updateState != State::NEED_UPDATE)
return;
_updateState = State::UPDATING;
// Clean up before update
_failedUnits.clear();
_downloadUnits.clear();
_totalWaitToDownload = _totalToDownload = 0;
_nextSavePoint = 0;
_percent = _percentByFile = _sizeCollected = _totalSize = 0;
_downloadedSize.clear();
_totalEnabled = false;
// Temporary manifest exists, resuming previous download
if (_tempManifest && _tempManifest->isLoaded() && _tempManifest->versionEquals(_remoteManifest))
{
_tempManifest->saveToFile(_tempManifestPath);
_tempManifest->genResumeAssetsList(&_downloadUnits);
_totalWaitToDownload = _totalToDownload = (int)_downloadUnits.size();
this->batchDownload();
std::string msg = StringUtils::format("Resuming from previous unfinished update, %d files remains to be finished.", _totalToDownload);
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::UPDATE_PROGRESSION, "", msg);
}
else
{
// Temporary manifest exists, but can't be parsed or version doesn't equals remote manifest (out of date)
if (_tempManifest)
{
// Remove all temp files
_fileUtils->removeDirectory(_tempStoragePath);
CC_SAFE_RELEASE(_tempManifest);
// Recreate temp storage path and save remote manifest
_fileUtils->createDirectory(_tempStoragePath);
_remoteManifest->saveToFile(_tempManifestPath);
}
// Temporary manifest will be used to register the download states of each asset,
// in this case, it equals remote manifest.
_tempManifest = _remoteManifest;
// Check difference between local manifest and remote manifest
std::unordered_map<std::string, Manifest::AssetDiff> diff_map = _localManifest->genDiff(_remoteManifest);
if (diff_map.size() == 0)
{
updateSucceed();
}
else
{
// Generate download units for all assets that need to be updated or added
std::string packageUrl = _remoteManifest->getPackageUrl();
// Save current download manifest information for resuming
_tempManifest->saveToFile(_tempManifestPath);
// Preprocessing local files in previous version and creating download folders
for (auto it = diff_map.begin(); it != diff_map.end(); ++it)
{
Manifest::AssetDiff diff = it->second;
if (diff.type != Manifest::DiffType::DELETED)
{
std::string path = diff.asset.path;
DownloadUnit unit;
unit.customId = it->first;
unit.srcUrl = packageUrl + path;
unit.storagePath = _tempStoragePath + path;
unit.size = diff.asset.size;
_downloadUnits.emplace(unit.customId, unit);
_tempManifest->setAssetDownloadState(it->first, Manifest::DownloadState::UNSTARTED);
}
}
_totalWaitToDownload = _totalToDownload = (int)_downloadUnits.size();
this->batchDownload();
std::string msg = StringUtils::format("Start to update %d files from remote package.", _totalToDownload);
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::UPDATE_PROGRESSION, "", msg);
}
}
}
void ModuleMgr::startUpdate()
{
// Clean up before update
_failedUnits.clear();
_downloadUnits.clear();
_compressedFiles.clear();
_totalWaitToDownload = _totalToDownload = 0;
_percent = _percentByFile = _sizeCollected = _totalSize = 0;
_downloadedSize.clear();
_totalEnabled = false;
std::unordered_map<std::string, ModuleManifest::AssetDiff> diff_map = _remoteManifest->genDiff();
if (diff_map.size() == 0)
{
_updateState = State::UP_TO_DATE;
// Rename temporary manifest to valid manifest
_fileUtils->removeFile(_remoteManifestPath);
dispatchUpdateEvent(ModuleMgrEvent::EventCode::ALREADY_UP_TO_DATE);
}
else
{
if (false == _waitToUpdate) {
_updateState = State::NEED_UPDATE;
dispatchUpdateEvent(ModuleMgrEvent::EventCode::NEW_VERSION_FOUND);
return;
}
_updateState = State::UPDATING;
// Generate download units for all assets that need to be updated or added
std::string packageUrl = _remoteManifest->getPackageUrl();
for (auto it = diff_map.begin(); it != diff_map.end(); ++it)
{
ModuleManifest::AssetDiff diff = it->second;
if (diff.type == ModuleManifest::DiffType::DELETED)
{
_fileUtils->removeFile(_storagePath + diff.asset.path);
}
else
{
std::string path = diff.asset.path;
// Create path
_fileUtils->createDirectory(basename(_storagePath + path));
ModuleDownloader::DownloadUnit unit;
unit.customId = it->first;
unit.srcUrl = packageUrl + path;
unit.storagePath = _storagePath + path;
unit.resumeDownload = false;
_downloadUnits.emplace(unit.customId, unit);
}
}
// Set other assets' downloadState to SUCCESSED
auto assets = _remoteManifest->getAssets();
for (auto it = assets.cbegin(); it != assets.cend(); ++it)
{
const std::string &key = it->first;
auto diffIt = diff_map.find(key);
if (diffIt == diff_map.end())
{
_remoteManifest->setAssetDownloadState(key, ModuleManifest::DownloadState::SUCCESSED);
}
}
_totalWaitToDownload = _totalToDownload = (int)_downloadUnits.size();
_downloader->batchDownloadAsync(_downloadUnits, BATCH_UPDATE_ID);
std::string msg = StringUtils::format("Start to update %d files from remote package.", _totalToDownload);
dispatchUpdateEvent(ModuleMgrEvent::EventCode::UPDATE_PROGRESSION, "", msg);
}
_waitToUpdate = false;
}
void AssetsManagerEx::update()
{
if (_updateEntry != UpdateEntry::NONE)
{
CCLOGERROR("AssetsManagerEx::update, updateEntry isn't NONE");
return;
}
if (!_inited){
CCLOG("AssetsManagerEx : Manifests uninited.\n");
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_NO_LOCAL_MANIFEST);
return;
}
if (!_localManifest->isLoaded())
{
CCLOG("AssetsManagerEx : No local manifest file found error.\n");
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_NO_LOCAL_MANIFEST);
return;
}
_updateEntry = UpdateEntry::DO_UPDATE;
switch (_updateState) {
case State::UNCHECKED:
{
_updateState = State::PREDOWNLOAD_VERSION;
}
case State::PREDOWNLOAD_VERSION:
{
downloadVersion();
}
break;
case State::VERSION_LOADED:
{
parseVersion();
}
break;
case State::PREDOWNLOAD_MANIFEST:
{
downloadManifest();
}
break;
case State::MANIFEST_LOADED:
{
parseManifest();
}
break;
case State::FAIL_TO_UPDATE:
case State::NEED_UPDATE:
{
// Manifest not loaded yet
if (!_remoteManifest->isLoaded())
{
_updateState = State::PREDOWNLOAD_MANIFEST;
downloadManifest();
}
else
{
startUpdate();
}
}
break;
case State::UP_TO_DATE:
case State::UPDATING:
case State::UNZIPPING:
_updateEntry = UpdateEntry::NONE;
break;
default:
break;
}
}
void AssetsManager::startUpdate()
{
if (_updateState != State::NEED_UPDATE)
return;
_updateState = State::UPDATING;
// Clean up before update
_failedUnits.clear();
_downloadUnits.clear();
_compressedFiles.clear();
_totalWaitToDownload = _totalToDownload = 0;
_percent = _percentByFile = _sizeCollected = _totalSize = 0;
_downloadedSize.clear();
_totalEnabled = false;
// Temporary manifest exists, resuming previous download
if (_tempManifest->isLoaded() && _tempManifest->versionEquals(_remoteManifest))
{
_tempManifest->genResumeAssetsList(&_downloadUnits);
_totalWaitToDownload = _totalToDownload = (int)_downloadUnits.size();
_downloader->batchDownloadAsync(_downloadUnits, BATCH_UPDATE_ID);
std::string msg = StringUtils::format("Resuming from previous unfinished update, %d files remains to be finished.", _totalToDownload);
dispatchUpdateEvent(EventAssetsManager::EventCode::UPDATE_PROGRESSION, "", msg);
}
// Check difference
else
{
// Temporary manifest not exists,
// it will be used to register the download states of each asset,
// in this case, it equals remote manifest.
if(!_tempManifest->isLoaded()) {
_tempManifest->release();
_tempManifest = _remoteManifest;
}
std::unordered_map<std::string, Manifest::AssetDiff> diff_map = _localManifest->genDiff(_remoteManifest);
if (diff_map.size() == 0)
{
_updateState = State::UP_TO_DATE;
// Rename temporary manifest to valid manifest
_fileUtils->renameFile(_storagePath, TEMP_MANIFEST_FILENAME, MANIFEST_FILENAME);
dispatchUpdateEvent(EventAssetsManager::EventCode::ALREADY_UP_TO_DATE);
}
else
{
// Generate download units for all assets that need to be updated or added
std::string packageUrl = _remoteManifest->getPackageUrl();
for (auto it = diff_map.begin(); it != diff_map.end(); ++it)
{
Manifest::AssetDiff diff = it->second;
if (diff.type == Manifest::DiffType::DELETED)
{
_fileUtils->removeFile(_storagePath + diff.asset.path);
}
else
{
std::string path = diff.asset.path;
// Create path
_fileUtils->createDirectories(basename(_storagePath + path));
Downloader::DownloadUnit unit;
unit.customId = it->first;
unit.srcUrl = packageUrl + path;
unit.storagePath = _storagePath + path;
unit.resumeDownload = false;
_downloadUnits.emplace(unit.customId, unit);
}
}
// Set other assets' downloadState to SUCCESSED
auto assets = _remoteManifest->getAssets();
for (auto it = assets.cbegin(); it != assets.cend(); ++it)
{
const std::string &key = it->first;
auto diffIt = diff_map.find(key);
if (diffIt == diff_map.end())
{
_tempManifest->setAssetDownloadState(key, Manifest::DownloadState::SUCCESSED);
}
}
_totalWaitToDownload = _totalToDownload = (int)_downloadUnits.size();
_downloader->batchDownloadAsync(_downloadUnits, BATCH_UPDATE_ID);
std::string msg = StringUtils::format("Start to update %d files from remote package.", _totalToDownload);
dispatchUpdateEvent(EventAssetsManager::EventCode::UPDATE_PROGRESSION, "", msg);
}
}
_waitToUpdate = false;
}
