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path: root/backends/cloud/storage.h
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2016-08-24CLOUD: Refactor ConnectionManager/Requests systemAlexander Tkachev
ConnectionManager now storages Request * (not generates ids for it), Requests have control on their RequestState, RequestIdPair is now called Response and storages Request * with some response together. All related classes are changed to use it in more clean and understandable way. Request, RequestState and Response are carefully commented/documented.
2016-08-24CLOUD: Make OneDriveStorage::download() work fineAlexander Tkachev
Well, it takes two API calls instead of one now, but there are no problems with expired token because of it. This commit changes Storage::streamFile() to pass NetworkReadStream * through callback.
2016-08-24CLOUD: Add RequestIdPair structAlexander Tkachev
Can be used with Callback<T> (means it's still type safe). It's used to pass not only Request id to user's callback, but also a value user wanted. void *data field is removed from RequestInfo.
2016-08-24CLOUD: Add Requests idAlexander Tkachev
(Upgrading ConnectionManager step by step.)
2016-08-24CLOUD: Make DownloadRequest write to local fileAlexander Tkachev
Tested with .jpg file. Transfer complete, CRC-32 is the same.
2016-08-24CLOUD: Add DownloadRequest stubAlexander Tkachev
It reads the passed NetworkReadStream and prints its contents onto console (for now). It would be writing contents into file. To simplify work with raw NetworkReadStream there is a new CurlRequest. It basically does nothing, but as ConnMan handles transfers only if there is an active Request, you need some Request to get NetworkReadStream working. Thus, there is a CurlRequest, which is active until NetworkReadStream is completely read. CurlRequest also has useful addHeader() and addPostField() methods in order to customize the request easily. Use execute() method to get its NetworkReadStream. DropboxStorage implements streamFile() and download() API methods. As DownloadRequest is incomplete, it is not actually downloading a file, though.
2016-08-24CLOUD: Add DropboxStorage::listDirectory sketchAlexander Tkachev
It doesn't support any "has_more", doesn't call user's callback and just prints JSON instead of parsing in into an array of files. I believe it would become DropboxListDirectoryRequest in the next commit.
2016-08-24CLOUD: Add Storage saving mechanismAlexander Tkachev
In this commit CloudManager starts supporting multiple Storage. Now, in its init() it loads all the Storages and determines the current one. It now also has save() method. In that method all Storages are saved with their new saveConfig() method. CloudManager::save() not called from anywhere, though. The only one Storage that could be added is DropboxStorage in case you have no cloud-related config keys or you have no storages connected.
2016-08-24CLOUD: Add Callback typedefsAlexander Tkachev
And do some minor cleanup work.
2016-08-24CLOUD: Polish CallbacksAlexander Tkachev
Cleaned up all example code and old callbacks. New Callback classes are introduced in "common/callback.h" and documented.
2016-08-24CLOUD: Add complex callbacksAlexander Tkachev
Originally, I intended to add Storage API, StorageFile and StorageInfo stubs. When I tried to implement a simple info() call, I ended up fixing Request to contain some pointer field and all callbacks to have Request* parameter. And, now I have to place callback pointer into Request. which calls another callback. And, eventually, these "simple" callbacks would again require another pointer (to some caller class).
2016-08-24CLOUD: Make ConnectionManager singletonAlexander Tkachev
With ConnectionManager singleton one can start their Requests without creating Storage instance. Moreover, Storage instance should contain cloud API, not Requests-related handling and timer starting methods. Thus, these methods were moved into ConnectionManager itself.
2016-08-24CLOUD: Add Dropbox into CloudManager's configsAlexander Tkachev
This commit adds: * ConfMan's new "cloud" domain; * CloudManager's init() method, where it loads keys from "cloud" configs domain; * CurlJsonRequest's addHeader() and addPostField() methods; * temporary Storage's printInfo() method; * DropboxStorage's implementation of printInfo(), which is using access token and user id; * DropboxStorage's loadFromConfig() static method to load access token and user id from configs and create a Storage instance with those; * temporary DropboxStorage's authThroughConsole() static method, which guides user through auth process from the console. So, in CloudManager's init() implementation ScummVM checks that there is "current_storage_type" key in "cloud" domain of configs, and loads corresponding storage if there is such key. If there is no such key, ScummVM offers user to auth with Dropbox. That's done through console, and thus it's temporary (it also requires restarting ScummVM twice and manually editing config.ini file).
2016-08-24CLOUD: Rewrite NetworkReadStreamAlexander Tkachev
Now it is based on MemoryReadWriteStream, which is introduced by this commit. This stream is using ring buffer and is dynamically increasing its size when necessary.
2016-08-24CLOUD: Add ConnectionManager and NetworkReadStreamAlexander Tkachev
NetworkReadStream actually saves whole response in the memory now. There is a pause mechanism in libcurl, but if libcurl is requesting something compressed, it would have to uncompress data as it goes even if we paused the request. Even though our own stream won't be notified about this data when when "pause" the request, libcurl's own buffer wound be expanding.
2016-08-24CLOUD: Add first RequestAlexander Tkachev
Just fooling around with the example Request, but the idea works well.
2016-08-24CLOUD: Do minor fixesAlexander Tkachev
2016-08-24CLOUD: Add Cloud::Manager and Cloud::StorageAlexander Tkachev
This commit introduces Common::CloudManager, which can be accessed from OSystem. The backend for this manager is Cloud::Manager (defined in backends/cloud/manager.h). It should load all users storages from configs and provide access to current Storage instance. For now it just creates a new one. Cloud::Storage (backends/cloud/storage.h) provides an API to interact with cloud storage, for example, create new directory or sync files. Right now it's not ready and has only two dummy methods: listDirectory() and syncSaves(). There is Cloud::Dropbox::DropboxStorage backend (backends/cloud/dropbox/dropboxstorage.h) for Cloud::Storage. Right now it implements both listDirectory() and syncSaves() with starting timer task and handling it by printing out some JSON examples.