Examples with FULL_DOWNLOAD com.ichi2.async.Connection.ConflictResolution.FULL_DOWNLOAD used on opensource projects

Example 1 with FULL_DOWNLOAD

use of com.ichi2.async.Connection.ConflictResolution.FULL_DOWNLOAD in project Anki-Android by ankidroid.

the class Connection method doInBackgroundSync.

/**
 * In the payload, success means that the sync did occur correctly and that a change did occur.
 * So success can be false without error, if no change occurred at all.
 */
private Payload doInBackgroundSync(Payload data) {
    sIsCancellable = true;
    Timber.d("doInBackgroundSync()");
    // Block execution until any previous background task finishes, or timeout after 5s
    boolean ok = TaskManager.waitToFinish(5);
    // Unique key allowing to identify the user to AnkiWeb without password
    String hkey = (String) data.data[0];
    // Whether media should be synced too
    boolean media = (Boolean) data.data[1];
    // If normal sync can't occur, what to do
    ConflictResolution conflictResolution = (ConflictResolution) data.data[2];
    // A number AnkiWeb told us to send back. Probably to choose the best server for the user
    HostNum hostNum = (HostNum) data.data[3];
    // Use safe version that catches exceptions so that full sync is still possible
    Collection col = CollectionHelper.getInstance().getColSafe(AnkiDroidApp.getInstance());
    boolean colCorruptFullSync = false;
    if (!CollectionHelper.getInstance().colIsOpen() || !ok) {
        if (FULL_DOWNLOAD == conflictResolution) {
            colCorruptFullSync = true;
        } else {
            return returnGenericError(data);
        }
    }
    try {
        CollectionHelper.getInstance().lockCollection();
        RemoteServer remoteServer = new RemoteServer(this, hkey, hostNum);
        Syncer client = new Syncer(col, remoteServer, hostNum);
        // run sync and check state
        boolean noChanges = false;
        if (conflictResolution == null) {
            Timber.i("Sync - starting sync");
            publishProgress(R.string.sync_prepare_syncing);
            Pair<ConnectionResultType, Object> ret = client.sync(this);
            data.message = client.getSyncMsg();
            if (ret == null) {
                return returnGenericError(data);
            }
            if (NO_CHANGES != ret.first && SUCCESS != ret.first) {
                data.success = false;
                data.resultType = ret.first;
                data.result = new Object[] { ret.second };
                // Check if there was a sanity check error
                if (SANITY_CHECK_ERROR == ret.first) {
                    // Force full sync next time
                    col.modSchemaNoCheck();
                    col.save();
                }
                return data;
            }
            // save and note success state
            if (NO_CHANGES == ret.first) {
                // publishProgress(R.string.sync_no_changes_message);
                noChanges = true;
            }
        } else {
            try {
                // Disable sync cancellation for full-sync
                sIsCancellable = false;
                FullSyncer fullSyncServer = new FullSyncer(col, hkey, this, hostNum);
                switch(conflictResolution) {
                    case FULL_UPLOAD:
                        {
                            Timber.i("Sync - fullsync - upload collection");
                            publishProgress(R.string.sync_preparing_full_sync_message);
                            Pair<ConnectionResultType, Object[]> ret = fullSyncServer.upload();
                            col.reopen();
                            if (ret == null) {
                                return returnGenericError(data);
                            }
                            if (ret.first == ARBITRARY_STRING && !ret.second[0].equals(HttpSyncer.ANKIWEB_STATUS_OK)) {
                                data.success = false;
                                data.resultType = ret.first;
                                data.result = ret.second;
                                return data;
                            }
                            break;
                        }
                    case FULL_DOWNLOAD:
                        {
                            Timber.i("Sync - fullsync - download collection");
                            publishProgress(R.string.sync_downloading_message);
                            ConnectionResultType ret = fullSyncServer.download();
                            if (ret == null) {
                                Timber.w("Sync - fullsync - unknown error");
                                return returnGenericError(data);
                            }
                            if (SUCCESS == ret) {
                                data.success = true;
                                col.reopen();
                            }
                            if (SUCCESS != ret) {
                                Timber.w("Sync - fullsync - download failed");
                                data.success = false;
                                data.resultType = ret;
                                if (!colCorruptFullSync) {
                                    col.reopen();
                                }
                                return data;
                            }
                            break;
                        }
                    default:
                }
            } catch (OutOfMemoryError e) {
                Timber.w(e);
                AnkiDroidApp.sendExceptionReport(e, "doInBackgroundSync-fullSync");
                data.success = false;
                data.resultType = OUT_OF_MEMORY_ERROR;
                data.result = new Object[0];
                return data;
            } catch (RuntimeException e) {
                Timber.w(e);
                if (timeoutOccurred(e)) {
                    data.resultType = CONNECTION_ERROR;
                } else if (USER_ABORTED_SYNC.toString().equals(e.getMessage())) {
                    data.resultType = USER_ABORTED_SYNC;
                } else {
                    AnkiDroidApp.sendExceptionReport(e, "doInBackgroundSync-fullSync");
                    data.resultType = IO_EXCEPTION;
                }
                data.result = new Object[] { e };
                data.success = false;
                return data;
            }
        }
        // clear undo to avoid non syncing orphans (because undo resets usn too
        if (!noChanges) {
            col.clearUndo();
        }
        // then move on to media sync
        sIsCancellable = true;
        boolean noMediaChanges = false;
        String mediaError = null;
        if (media) {
            RemoteMediaServer mediaServer = new RemoteMediaServer(col, hkey, this, hostNum);
            MediaSyncer mediaClient = new MediaSyncer(col, mediaServer, this);
            Pair<ConnectionResultType, String> ret;
            try {
                Timber.i("Sync - Performing media sync");
                ret = mediaClient.sync();
                if (ret == null || ret.first == null) {
                    mediaError = AnkiDroidApp.getAppResources().getString(R.string.sync_media_error);
                } else {
                    if (CORRUPT == ret.first) {
                        mediaError = AnkiDroidApp.getAppResources().getString(R.string.sync_media_db_error);
                        noMediaChanges = true;
                    }
                    if (NO_CHANGES == ret.first) {
                        publishProgress(R.string.sync_media_no_changes);
                        noMediaChanges = true;
                    }
                    if (MEDIA_SANITY_FAILED == ret.first) {
                        mediaError = AnkiDroidApp.getAppResources().getString(R.string.sync_media_sanity_failed);
                    } else {
                        publishProgress(R.string.sync_media_success);
                    }
                }
            } catch (RuntimeException e) {
                Timber.w(e);
                if (timeoutOccurred(e)) {
                    data.resultType = CONNECTION_ERROR;
                    data.result = new Object[] { e };
                } else if (USER_ABORTED_SYNC.toString().equals(e.getMessage())) {
                    data.resultType = USER_ABORTED_SYNC;
                    data.result = new Object[] { e };
                }
                int downloadedCount = mediaClient.getDownloadCount();
                int uploadedCount = mediaClient.getUploadCount();
                if (downloadedCount == 0 && uploadedCount == 0) {
                    mediaError = AnkiDroidApp.getAppResources().getString(R.string.sync_media_error) + "\n\n" + e.getLocalizedMessage();
                } else {
                    mediaError = AnkiDroidApp.getAppResources().getString(R.string.sync_media_partial_updated, downloadedCount, uploadedCount) + "\n\n" + e.getLocalizedMessage();
                }
            }
        }
        if (noChanges && (!media || noMediaChanges)) {
            // This means that there is no change at all, neither media nor collection. Not that there was an error.
            data.success = false;
            data.resultType = NO_CHANGES;
            data.result = new Object[0];
        } else {
            data.success = true;
            data.data = new Object[] { conflictResolution, col, mediaError };
        }
        return data;
    } catch (MediaSyncException e) {
        Timber.e("Media sync rejected by server");
        data.success = false;
        data.resultType = MEDIA_SYNC_SERVER_ERROR;
        data.result = new Object[] { e };
        AnkiDroidApp.sendExceptionReport(e, "doInBackgroundSync");
        return data;
    } catch (UnknownHttpResponseException e) {
        Timber.e(e, "doInBackgroundSync -- unknown response code error");
        data.success = false;
        int code = e.getResponseCode();
        String msg = e.getLocalizedMessage();
        data.resultType = ERROR;
        data.result = new Object[] { code, msg };
        return data;
    } catch (Exception e) {
        // Global error catcher.
        // Try to give a human readable error, otherwise print the raw error message
        Timber.e(e, "doInBackgroundSync error");
        data.success = false;
        if (timeoutOccurred(e)) {
            data.resultType = CONNECTION_ERROR;
            data.result = new Object[] { e };
        } else if (USER_ABORTED_SYNC.toString().equals(e.getMessage())) {
            data.resultType = USER_ABORTED_SYNC;
            data.result = new Object[] { e };
        } else {
            AnkiDroidApp.sendExceptionReport(e, "doInBackgroundSync");
            data.resultType = ARBITRARY_STRING;
            data.result = new Object[] { e.getLocalizedMessage(), e };
        }
        return data;
    } finally {
        Timber.i("Sync Finished - Closing Collection");
        // don't bump mod time unless we explicitly save
        if (col != null) {
            col.close(false);
        }
        CollectionHelper.getInstance().unlockCollection();
    }
}