1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_DOWNLOADER_H_
6 #define SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_DOWNLOADER_H_
8 #include "base/callback.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "google_apis/gaia/oauth2_token_service_request.h"
11 #include "sync/api/attachments/attachment.h"
12 #include "sync/base/sync_export.h"
15 class URLRequestContextGetter
;
20 // AttachmentDownloader is responsible for downloading attachments from server.
21 class SYNC_EXPORT AttachmentDownloader
{
23 // The result of a DownloadAttachment operation.
25 DOWNLOAD_SUCCESS
, // No error, attachment was downloaded
27 DOWNLOAD_TRANSIENT_ERROR
, // A transient error occurred, try again later.
28 DOWNLOAD_UNSPECIFIED_ERROR
, // An unspecified error occurred.
31 typedef base::Callback
<void(const DownloadResult
&, scoped_ptr
<Attachment
>)>
34 virtual ~AttachmentDownloader();
36 // Download attachment referred by |attachment_id| and invoke |callback| when
39 // |callback| will receive a DownloadResult code and an Attachment object. If
40 // DownloadResult is not DOWNLOAD_SUCCESS then attachment pointer is NULL.
41 virtual void DownloadAttachment(const AttachmentId
& attachment_id
,
42 const DownloadCallback
& callback
) = 0;
44 // Create instance of AttachmentDownloaderImpl.
45 // |sync_service_url| is the URL of the sync service.
47 // |url_request_context_getter| provides a URLRequestContext.
49 // |account_id| is the account id to use for downloads.
51 // |scopes| is the set of scopes to use for downloads.
53 // |token_service_provider| provides an OAuth2 token service.
54 static scoped_ptr
<AttachmentDownloader
> Create(
55 const GURL
& sync_service_url
,
56 const scoped_refptr
<net::URLRequestContextGetter
>&
57 url_request_context_getter
,
58 const std::string
& account_id
,
59 const OAuth2TokenService::ScopeSet scopes
,
60 const scoped_refptr
<OAuth2TokenServiceRequest::TokenServiceProvider
>&
61 token_service_provider
);
66 #endif // SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_DOWNLOADER_H_