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| 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. | |
| 4 | |
| 5 #ifndef COMPONENTS_SYNC_CORE_ATTACHMENTS_ATTACHMENT_DOWNLOADER_H_ | |
| 6 #define COMPONENTS_SYNC_CORE_ATTACHMENTS_ATTACHMENT_DOWNLOADER_H_ | |
| 7 | |
| 8 #include <memory> | |
| 9 #include <string> | |
| 10 | |
| 11 #include "base/callback.h" | |
| 12 #include "components/sync/api/attachments/attachment.h" | |
| 13 #include "components/sync/base/model_type.h" | |
| 14 #include "google_apis/gaia/oauth2_token_service_request.h" | |
| 15 | |
| 16 namespace net { | |
| 17 class URLRequestContextGetter; | |
| 18 } // namespace net | |
| 19 | |
| 20 namespace syncer { | |
| 21 | |
| 22 // AttachmentDownloader is responsible for downloading attachments from server. | |
| 23 class AttachmentDownloader { | |
| 24 public: | |
| 25 // The result of a DownloadAttachment operation. | |
| 26 enum DownloadResult { | |
| 27 DOWNLOAD_SUCCESS, // No error, attachment was downloaded | |
| 28 // successfully. | |
| 29 DOWNLOAD_TRANSIENT_ERROR, // A transient error occurred, try again later. | |
| 30 DOWNLOAD_UNSPECIFIED_ERROR, // An unspecified error occurred. | |
| 31 }; | |
| 32 | |
| 33 typedef base::Callback<void(const DownloadResult&, | |
| 34 std::unique_ptr<Attachment>)> | |
| 35 DownloadCallback; | |
| 36 | |
| 37 virtual ~AttachmentDownloader(); | |
| 38 | |
| 39 // Download attachment referred by |attachment_id| and invoke |callback| when | |
| 40 // done. | |
| 41 // | |
| 42 // |callback| will receive a DownloadResult code and an Attachment object. If | |
| 43 // DownloadResult is not DOWNLOAD_SUCCESS then attachment pointer is NULL. | |
| 44 virtual void DownloadAttachment(const AttachmentId& attachment_id, | |
| 45 const DownloadCallback& callback) = 0; | |
| 46 | |
| 47 // Create instance of AttachmentDownloaderImpl. | |
| 48 // |sync_service_url| is the URL of the sync service. | |
| 49 // | |
| 50 // |url_request_context_getter| provides a URLRequestContext. | |
| 51 // | |
| 52 // |account_id| is the account id to use for downloads. | |
| 53 // | |
| 54 // |scopes| is the set of scopes to use for downloads. | |
| 55 // | |
| 56 // |token_service_provider| provides an OAuth2 token service. | |
| 57 // | |
| 58 // |store_birthday| is the raw, sync store birthday. | |
| 59 // | |
| 60 // |model_type| is the model type this downloader is used with. | |
| 61 static std::unique_ptr<AttachmentDownloader> Create( | |
| 62 const GURL& sync_service_url, | |
| 63 const scoped_refptr<net::URLRequestContextGetter>& | |
| 64 url_request_context_getter, | |
| 65 const std::string& account_id, | |
| 66 const OAuth2TokenService::ScopeSet scopes, | |
| 67 const scoped_refptr<OAuth2TokenServiceRequest::TokenServiceProvider>& | |
| 68 token_service_provider, | |
| 69 const std::string& store_birthday, | |
| 70 ModelType model_type); | |
| 71 }; | |
| 72 | |
| 73 } // namespace syncer | |
| 74 | |
| 75 #endif // COMPONENTS_SYNC_CORE_ATTACHMENTS_ATTACHMENT_DOWNLOADER_H_ | |
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Chromium Code Reviews
Issue 2399953002:
[Sync] Move attachments code out of core/. (Closed)
