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axmol/extensions/assets-manager/AssetsManagerEx.cpp

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/****************************************************************************
Copyright (c) 2014 cocos2d-x.org
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
http://www.cocos2d-x.org
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "AssetsManagerEx.h"
#include "CCEventListenerAssetsManagerEx.h"
#include "base/ccUTF8.h"
#include "base/CCDirector.h"
#include <stdio.h>
#ifdef MINIZIP_FROM_SYSTEM
#include <minizip/unzip.h>
#else // from our embedded sources
#include "unzip.h"
#endif
#include "base/CCAsyncTaskPool.h"
NS_CC_EXT_BEGIN
#define TEMP_FOLDERNAME "_temp"
#define VERSION_FILENAME "version.manifest"
#define TEMP_MANIFEST_FILENAME "project.manifest.temp"
#define MANIFEST_FILENAME "project.manifest"
#define BUFFER_SIZE 8192
#define MAX_FILENAME 512
#define DEFAULT_CONNECTION_TIMEOUT 45
#define SAVE_POINT_INTERVAL 0.1
const std::string AssetsManagerEx::VERSION_ID = "@version";
const std::string AssetsManagerEx::MANIFEST_ID = "@manifest";
class AssetManagerExZipFileInfo
{
public:
std::string zipFileName{};
};
// unzip overrides to support FileStream
long AssetManagerEx_tell_file_func(voidpf opaque, voidpf stream)
{
if (stream == nullptr)
return -1;
auto* fs = (FileStream*)stream;
return fs->tell();
}
long AssetManagerEx_seek_file_func(voidpf opaque, voidpf stream, uint32_t offset, int origin)
{
if (stream == nullptr)
return -1;
auto* fs = (FileStream*)stream;
return fs->seek((long)offset, origin); // must return 0 for success or -1 for error
}
voidpf AssetManagerEx_open_file_func(voidpf opaque, const char* filename, int mode)
{
FileStream::Mode fsMode;
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
fsMode = FileStream::Mode::READ;
else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
fsMode = FileStream::Mode::APPEND;
else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
fsMode = FileStream::Mode::WRITE;
else
return nullptr;
return FileUtils::getInstance()->openFileStream(filename, fsMode);
}
voidpf AssetManagerEx_opendisk_file_func(voidpf opaque, voidpf stream, uint32_t number_disk, int mode)
{
if (stream == nullptr)
return nullptr;
const auto zipFileInfo = static_cast<AssetManagerExZipFileInfo*>(opaque);
std::string diskFilename = zipFileInfo->zipFileName;
const auto pos = diskFilename.rfind('.', std::string::npos);
if (pos != std::string::npos && pos != 0)
{
const size_t bufferSize = 5;
char extensionBuffer[bufferSize];
snprintf(&extensionBuffer[0], bufferSize, ".z%02u", number_disk + 1);
diskFilename.replace(pos, std::min((size_t)4, zipFileInfo->zipFileName.size() - pos), extensionBuffer);
return AssetManagerEx_open_file_func(opaque, diskFilename.c_str(), mode);
}
return nullptr;
}
uint32_t AssetManagerEx_read_file_func(voidpf opaque, voidpf stream, void* buf, uint32_t size)
{
if (stream == nullptr)
return (uint32_t)-1;
auto* fs = (FileStream*)stream;
return fs->read(buf, size);
}
uint32_t AssetManagerEx_write_file_func(voidpf opaque, voidpf stream, const void* buf, uint32_t size)
{
if (stream == nullptr)
return (uint32_t)-1;
auto* fs = (FileStream*)stream;
return fs->write(buf, size);
}
int AssetManagerEx_close_file_func(voidpf opaque, voidpf stream)
{
if (stream == nullptr)
return -1;
auto* fs = (FileStream*)stream;
return fs->close(); // 0 for success, -1 for error
}
// THis isn't supported by FileStream, so just check if the stream is null and open
int AssetManagerEx_error_file_func(voidpf opaque, voidpf stream)
{
if (stream == nullptr)
{
return -1;
}
auto* fs = (FileStream*)stream;
if (fs->isOpen())
{
return 0;
}
return -1;
}
// End of Overrides
// Implementation of AssetsManagerEx
AssetsManagerEx::AssetsManagerEx(const std::string& manifestUrl, const std::string& storagePath)
: _manifestUrl(manifestUrl)
{
// Init variables
_eventDispatcher = Director::getInstance()->getEventDispatcher();
std::string pointer = StringUtils::format("%p", this);
_eventName = EventListenerAssetsManagerEx::LISTENER_ID + pointer;
_fileUtils = FileUtils::getInstance();
network::DownloaderHints hints =
{
static_cast<uint32_t>(_maxConcurrentTask),
DEFAULT_CONNECTION_TIMEOUT,
".tmp"
};
_downloader = std::shared_ptr<network::Downloader>(new network::Downloader(hints));
_downloader->onTaskError = std::bind(&AssetsManagerEx::onError, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3, std::placeholders::_4);
_downloader->onTaskProgress = [this](const network::DownloadTask& task)
{
this->onProgress(task.progressInfo.totalBytesExpected, task.progressInfo.totalBytesReceived, task.requestURL, task.identifier);
};
_downloader->onFileTaskSuccess = [this](const network::DownloadTask& task)
{
this->onSuccess(task.requestURL, task.storagePath, task.identifier);
};
setStoragePath(storagePath);
_tempVersionPath = _tempStoragePath + VERSION_FILENAME;
_cacheManifestPath = _storagePath + MANIFEST_FILENAME;
_tempManifestPath = _tempStoragePath + TEMP_MANIFEST_FILENAME;
initManifests(manifestUrl);
}
AssetsManagerEx::~AssetsManagerEx()
{
_downloader->onTaskError = (nullptr);
_downloader->onFileTaskSuccess = (nullptr);
_downloader->onTaskProgress = (nullptr);
CC_SAFE_RELEASE(_localManifest);
// _tempManifest could share a ptr with _remoteManifest or _localManifest
if (_tempManifest != _localManifest && _tempManifest != _remoteManifest)
CC_SAFE_RELEASE(_tempManifest);
CC_SAFE_RELEASE(_remoteManifest);
}
AssetsManagerEx* AssetsManagerEx::create(const std::string& manifestUrl, const std::string& storagePath)
{
AssetsManagerEx* ret = new (std::nothrow) AssetsManagerEx(manifestUrl, storagePath);
if (ret)
{
ret->autorelease();
}
else
{
CC_SAFE_DELETE(ret);
}
return ret;
}
void AssetsManagerEx::initManifests(const std::string& manifestUrl)
{
_inited = true;
// Init and load local manifest
_localManifest = new (std::nothrow) Manifest();
if (_localManifest)
{
loadLocalManifest(manifestUrl);
// Init and load temporary manifest
_tempManifest = new (std::nothrow) Manifest();
if (_tempManifest)
{
_tempManifest->parse(_tempManifestPath);
// Previous update is interrupted
if (_fileUtils->isFileExist(_tempManifestPath))
{
// Manifest parse failed, remove all temp files
if (!_tempManifest->isLoaded())
{
_fileUtils->removeDirectory(_tempStoragePath);
CC_SAFE_RELEASE(_tempManifest);
_tempManifest = nullptr;
}
}
}
else
{
_inited = false;
}
// Init remote manifest for future usage
_remoteManifest = new (std::nothrow) Manifest();
if (!_remoteManifest)
{
_inited = false;
}
}
else
{
_inited = false;
}
if (!_inited)
{
CC_SAFE_RELEASE(_localManifest);
CC_SAFE_RELEASE(_tempManifest);
CC_SAFE_RELEASE(_remoteManifest);
_localManifest = nullptr;
_tempManifest = nullptr;
_remoteManifest = nullptr;
}
}
void AssetsManagerEx::prepareLocalManifest()
{
// An alias to assets
_assets = &(_localManifest->getAssets());
// Add search paths
_localManifest->prependSearchPaths();
}
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 (const 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);
}
}
std::string AssetsManagerEx::basename(const std::string& path) const
{
size_t found = path.find_last_of("/\\");
if (std::string::npos != found)
{
return path.substr(0, found);
}
else
{
return path;
}
}
std::string AssetsManagerEx::get(const std::string& key) const
{
auto it = _assets->find(key);
if (it != _assets->cend()) {
return _storagePath + it->second.path;
}
else return "";
}
const Manifest* AssetsManagerEx::getLocalManifest() const
{
return _localManifest;
}
const Manifest* AssetsManagerEx::getRemoteManifest() const
{
return _remoteManifest;
}
const std::string& AssetsManagerEx::getStoragePath() const
{
return _storagePath;
}
void AssetsManagerEx::setStoragePath(const std::string& storagePath)
{
_storagePath = storagePath;
adjustPath(_storagePath);
_fileUtils->createDirectory(_storagePath);
_tempStoragePath = _storagePath;
_tempStoragePath.append(TEMP_FOLDERNAME);
adjustPath(_tempStoragePath);
_fileUtils->createDirectory(_tempStoragePath);
}
void AssetsManagerEx::adjustPath(std::string &path)
{
if (!path.empty() && path[path.size() - 1] != '/')
{
path.push_back('/');
}
}
bool AssetsManagerEx::decompress(const std::string &zip)
{
// Find root path for zip file
size_t pos = zip.find_last_of("/\\");
if (pos == std::string::npos)
{
CCLOG("AssetsManagerEx : no root path specified for zip file %s\n", zip.c_str());
return false;
}
const std::string rootPath = zip.substr(0, pos+1);
zlib_filefunc_def zipFunctionOverrides;
fillZipFunctionOverrides(zipFunctionOverrides);
AssetManagerExZipFileInfo zipFileInfo;
zipFileInfo.zipFileName = zip;
zipFunctionOverrides.opaque = &zipFileInfo;
// Open the zip file
unzFile zipfile = unzOpen2(zip.c_str(), &zipFunctionOverrides);
if (! zipfile)
{
CCLOG("AssetsManagerEx : can not open downloaded zip file %s\n", zip.c_str());
return false;
}
// Get info about the zip file
unz_global_info global_info;
if (unzGetGlobalInfo(zipfile, &global_info) != UNZ_OK)
{
CCLOG("AssetsManagerEx : can not read file global info of %s\n", zip.c_str());
unzClose(zipfile);
return false;
}
// Buffer to hold data read from the zip file
char readBuffer[BUFFER_SIZE];
// Loop to extract all files.
uLong i;
for (i = 0; i < global_info.number_entry; ++i)
{
// Get info about current file.
unz_file_info fileInfo;
char fileName[MAX_FILENAME];
if (unzGetCurrentFileInfo(zipfile,
&fileInfo,
fileName,
MAX_FILENAME,
NULL,
0,
NULL,
0) != UNZ_OK)
{
CCLOG("AssetsManagerEx : can not read compressed file info\n");
unzClose(zipfile);
return false;
}
const std::string fullPath = rootPath + fileName;
// Check if this entry is a directory or a file.
const size_t filenameLength = strlen(fileName);
if (fileName[filenameLength-1] == '/')
{
//There are not directory entry in some case.
//So we need to create directory when decompressing file entry
if ( !_fileUtils->createDirectory(basename(fullPath)) )
{
// Failed to create directory
CCLOG("AssetsManagerEx : can not create directory %s\n", fullPath.c_str());
unzClose(zipfile);
return false;
}
}
else
{
// Create all directories in advance to avoid issue
std::string dir = basename(fullPath);
if (!_fileUtils->isDirectoryExist(dir)) {
if (!_fileUtils->createDirectory(dir)) {
// Failed to create directory
CCLOG("AssetsManagerEx : can not create directory %s\n", fullPath.c_str());
unzClose(zipfile);
return false;
}
}
// Entry is a file, so extract it.
// Open current file.
if (unzOpenCurrentFile(zipfile) != UNZ_OK)
{
CCLOG("AssetsManagerEx : can not extract file %s\n", fileName);
unzClose(zipfile);
return false;
}
// Create a file to store current file.
auto* fsOut = FileUtils::getInstance()->openFileStream(fullPath, FileStream::Mode::WRITE);
if (!fsOut)
{
CCLOG("AssetsManagerEx : can not create decompress destination file %s (errno: %d)\n", fullPath.c_str(), errno);
unzCloseCurrentFile(zipfile);
unzClose(zipfile);
return false;
}
// Write current file content to destinate file.
int error = UNZ_OK;
do
{
error = unzReadCurrentFile(zipfile, readBuffer, BUFFER_SIZE);
if (error < 0)
{
CCLOG("AssetsManagerEx : can not read zip file %s, error code is %d\n", fileName, error);
delete fsOut;
unzCloseCurrentFile(zipfile);
unzClose(zipfile);
return false;
}
if (error > 0)
{
fsOut->write(readBuffer, error);
}
} while(error > 0);
delete fsOut;
}
unzCloseCurrentFile(zipfile);
// Goto next entry listed in the zip file.
if ((i+1) < global_info.number_entry)
{
if (unzGoToNextFile(zipfile) != UNZ_OK)
{
CCLOG("AssetsManagerEx : can not read next file for decompressing\n");
unzClose(zipfile);
return false;
}
}
}
unzClose(zipfile);
return true;
}
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::dispatchUpdateEvent(EventAssetsManagerEx::EventCode code, const std::string &assetId/* = ""*/, const std::string &message/* = ""*/, int curle_code/* = CURLE_OK*/, int curlm_code/* = CURLM_OK*/)
{
switch (code)
{
case EventAssetsManagerEx::EventCode::ERROR_UPDATING:
case EventAssetsManagerEx::EventCode::ERROR_PARSE_MANIFEST:
case EventAssetsManagerEx::EventCode::ERROR_NO_LOCAL_MANIFEST:
case EventAssetsManagerEx::EventCode::ERROR_DECOMPRESS:
case EventAssetsManagerEx::EventCode::ERROR_DOWNLOAD_MANIFEST:
case EventAssetsManagerEx::EventCode::UPDATE_FAILED:
case EventAssetsManagerEx::EventCode::UPDATE_FINISHED:
case EventAssetsManagerEx::EventCode::ALREADY_UP_TO_DATE:
_updateEntry = UpdateEntry::NONE;
break;
case EventAssetsManagerEx::EventCode::UPDATE_PROGRESSION:
break;
case EventAssetsManagerEx::EventCode::ASSET_UPDATED:
break;
case EventAssetsManagerEx::EventCode::NEW_VERSION_FOUND:
if (_updateEntry == UpdateEntry::CHECK_UPDATE)
{
_updateEntry = UpdateEntry::NONE;
}
break;
default:
break;
}
EventAssetsManagerEx event(_eventName, this, code, _percent, _percentByFile, assetId, message, curle_code, curlm_code);
_eventDispatcher->dispatchEvent(&event);
}
AssetsManagerEx::State AssetsManagerEx::getState() const
{
return _updateState;
}
void AssetsManagerEx::downloadVersion()
{
if (_updateState > State::PREDOWNLOAD_VERSION)
return;
std::string versionUrl = _localManifest->getVersionFileUrl();
if (!versionUrl.empty())
{
_updateState = State::DOWNLOADING_VERSION;
// Download version file asynchronously
_downloader->createDownloadFileTask(versionUrl, _tempVersionPath, "", VERSION_ID);
}
// No version file found
else
{
CCLOG("AssetsManagerEx : No version file found, step skipped\n");
_updateState = State::PREDOWNLOAD_MANIFEST;
downloadManifest();
}
}
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 AssetsManagerEx::downloadManifest()
{
if (_updateState != State::PREDOWNLOAD_MANIFEST)
return;
std::string manifestUrl;
if (_remoteManifest->isVersionLoaded()) {
manifestUrl = _remoteManifest->getManifestFileUrl();
} else {
manifestUrl = _localManifest->getManifestFileUrl();
}
if (!manifestUrl.empty())
{
_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 AssetsManagerEx::parseManifest()
{
if (_updateState != State::MANIFEST_LOADED)
return;
_remoteManifest->parse(_tempManifestPath);
if (!_remoteManifest->isLoaded())
{
CCLOG("AssetsManagerEx : Error parsing manifest file, %s", _tempManifestPath.c_str());
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ERROR_PARSE_MANIFEST);
_updateState = State::UNCHECKED;
}
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;
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::NEW_VERSION_FOUND);
if (_updateEntry == UpdateEntry::DO_UPDATE)
{
startUpdate();
}
}
}
}
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.empty())
{
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 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::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 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 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();
}
}
}
const DownloadUnits& AssetsManagerEx::getFailedAssets() const
{
return _failedUnits;
}
void AssetsManagerEx::downloadFailedAssets()
{
CCLOG("AssetsManagerEx : Start update %lu failed assets.\n", static_cast<unsigned long>(_failedUnits.size()));
updateAssets(_failedUnits);
}
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 AssetsManagerEx::fileSuccess(const std::string &customId, const std::string &storagePath)
{
// Set download state to SUCCESSED
_tempManifest->setAssetDownloadState(customId, Manifest::DownloadState::SUCCESSED);
auto unitIt = _failedUnits.find(customId);
// Found unit and delete it
if (unitIt != _failedUnits.end())
{
// Remove from failed units list
_failedUnits.erase(unitIt);
}
unitIt = _downloadUnits.find(customId);
if (unitIt != _downloadUnits.end())
{
// Reduce count only when unit found in _downloadUnits
_totalWaitToDownload--;
_percent = _percentByFile = 100 * (float)(_totalToDownload - _totalWaitToDownload) / _totalToDownload;
// Notify progression event
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::UPDATE_PROGRESSION, "");
}
// Notify asset updated event
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::ASSET_UPDATED, customId);
_currConcurrentTask = MAX(0, _currConcurrentTask-1);
queueDowload();
}
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 AssetsManagerEx::onProgress(double total, double downloaded, const std::string& /*url*/, const std::string &customId)
{
if (customId == VERSION_ID || customId == MANIFEST_ID)
{
_percent = 100 * downloaded / total;
// Notify progression event
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::UPDATE_PROGRESSION, customId);
return;
}
else
{
// Calcul total downloaded
bool found = false;
double totalDownloaded = 0;
for (auto it = _downloadedSize.begin(); it != _downloadedSize.end(); ++it)
{
if (it->first == customId)
{
it->second = downloaded;
found = true;
}
totalDownloaded += it->second;
}
// Collect information if not registed
if (!found)
{
// Set download state to DOWNLOADING, this will run only once in the download process
_tempManifest->setAssetDownloadState(customId, Manifest::DownloadState::DOWNLOADING);
// Register the download size information
_downloadedSize.emplace(customId, downloaded);
// Check download unit size existance, if not exist collect size in total size
if (_downloadUnits[customId].size == 0)
{
_totalSize += total;
_sizeCollected++;
// All collected, enable total size
if (_sizeCollected == _totalToDownload)
{
_totalEnabled = true;
}
}
}
if (_totalEnabled && _updateState == State::UPDATING)
{
float currentPercent = 100 * totalDownloaded / _totalSize;
// Notify at integer level change
if ((int)currentPercent != (int)_percent) {
_percent = currentPercent;
// Notify progression event
dispatchUpdateEvent(EventAssetsManagerEx::EventCode::UPDATE_PROGRESSION, customId);
}
}
}
}
void AssetsManagerEx::onSuccess(const std::string &/*srcUrl*/, const std::string &storagePath, const std::string &customId)
{
if (customId == VERSION_ID)
{
_updateState = State::VERSION_LOADED;
parseVersion();
}
else if (customId == MANIFEST_ID)
{
_updateState = State::MANIFEST_LOADED;
parseManifest();
}
else
{
bool ok = true;
auto &assets = _remoteManifest->getAssets();
auto assetIt = assets.find(customId);
if (assetIt != assets.end())
{
Manifest::Asset asset = assetIt->second;
if (_verifyCallback != nullptr)
{
ok = _verifyCallback(storagePath, asset);
}
}
if (ok)
{
bool compressed = assetIt != assets.end() ? assetIt->second.compressed : false;
if (compressed)
{
decompressDownloadedZip(customId, storagePath);
}
else
{
fileSuccess(customId, storagePath);
}
}
else
{
fileError(customId, "Asset file verification failed after downloaded");
}
}
}
void AssetsManagerEx::destroyDownloadedVersion()
{
_fileUtils->removeDirectory(_storagePath);
_fileUtils->removeDirectory(_tempStoragePath);
}
void AssetsManagerEx::batchDownload()
{
_queue.clear();
for(const auto& iter : _downloadUnits)
{
const DownloadUnit& unit = iter.second;
if (unit.size > 0)
{
_totalSize += unit.size;
_sizeCollected++;
}
_queue.push_back(iter.first);
}
// All collected, enable total size
if (_sizeCollected == _totalToDownload)
{
_totalEnabled = true;
}
queueDowload();
}
void AssetsManagerEx::queueDowload()
{
if (_totalWaitToDownload == 0)
{
this->onDownloadUnitsFinished();
return;
}
while (_currConcurrentTask < _maxConcurrentTask && !_queue.empty())
{
std::string key = _queue.back();
_queue.pop_back();
_currConcurrentTask++;
DownloadUnit& unit = _downloadUnits[key];
_fileUtils->createDirectory(basename(unit.storagePath));
_downloader->createDownloadFileTask(unit.srcUrl, unit.storagePath, "", unit.customId);
_tempManifest->setAssetDownloadState(key, Manifest::DownloadState::DOWNLOADING);
}
if (_percentByFile / 100 > _nextSavePoint)
{
// Save current download manifest information for resuming
_tempManifest->saveToFile(_tempManifestPath);
_nextSavePoint += SAVE_POINT_INTERVAL;
}
}
void AssetsManagerEx::onDownloadUnitsFinished()
{
// Finished with error check
if (!_failedUnits.empty())
{
// 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::fillZipFunctionOverrides(zlib_filefunc_def& zipFunctionOverrides)
{
zipFunctionOverrides.zopen_file = AssetManagerEx_open_file_func;
zipFunctionOverrides.zopendisk_file = AssetManagerEx_opendisk_file_func;
zipFunctionOverrides.zread_file = AssetManagerEx_read_file_func;
zipFunctionOverrides.zwrite_file = AssetManagerEx_write_file_func;
zipFunctionOverrides.ztell_file = AssetManagerEx_tell_file_func;
zipFunctionOverrides.zseek_file = AssetManagerEx_seek_file_func;
zipFunctionOverrides.zclose_file = AssetManagerEx_close_file_func;
zipFunctionOverrides.zerror_file = AssetManagerEx_error_file_func;
zipFunctionOverrides.opaque = nullptr;
}
NS_CC_EXT_END
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