| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.documentsui.services; |
| |
| import static android.os.SystemClock.elapsedRealtime; |
| import static android.provider.DocumentsContract.buildChildDocumentsUri; |
| import static android.provider.DocumentsContract.buildDocumentUri; |
| import static android.provider.DocumentsContract.getDocumentId; |
| import static android.provider.DocumentsContract.isChildDocument; |
| import static com.android.documentsui.DocumentsApplication.acquireUnstableProviderOrThrow; |
| import static com.android.documentsui.Shared.DEBUG; |
| import static com.android.documentsui.model.DocumentInfo.getCursorLong; |
| import static com.android.documentsui.model.DocumentInfo.getCursorString; |
| import static com.android.documentsui.services.FileOperationService.OPERATION_COPY; |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| import android.annotation.StringRes; |
| import android.app.Notification; |
| import android.app.Notification.Builder; |
| import android.content.ContentProviderClient; |
| import android.content.Context; |
| import android.content.res.AssetFileDescriptor; |
| import android.database.Cursor; |
| import android.net.Uri; |
| import android.os.CancellationSignal; |
| import android.os.ParcelFileDescriptor; |
| import android.os.RemoteException; |
| import android.provider.DocumentsContract; |
| import android.provider.DocumentsContract.Document; |
| import android.text.format.DateUtils; |
| import android.util.Log; |
| import android.webkit.MimeTypeMap; |
| |
| import com.android.documentsui.R; |
| import com.android.documentsui.model.DocumentInfo; |
| import com.android.documentsui.model.DocumentStack; |
| import com.android.documentsui.services.FileOperationService.OpType; |
| |
| import libcore.io.IoUtils; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.text.NumberFormat; |
| import java.util.List; |
| |
| class CopyJob extends Job { |
| private static final String TAG = "CopyJob"; |
| private static final int PROGRESS_INTERVAL_MILLIS = 1000; |
| final List<DocumentInfo> mSrcFiles; |
| |
| // Provider clients are acquired for the duration of each copy job. Note that there is an |
| // implicit assumption that all srcs come from the same authority. |
| ContentProviderClient srcClient; |
| ContentProviderClient dstClient; |
| |
| private long mStartTime = -1; |
| private long mBatchSize; |
| private long mBytesCopied; |
| private long mLastNotificationTime; |
| // Speed estimation |
| private long mBytesCopiedSample; |
| private long mSampleTime; |
| private long mSpeed; |
| private long mRemainingTime; |
| |
| /** |
| * Copies files to a destination identified by {@code destination}. |
| * @see @link {@link Job} constructor for most param descriptions. |
| * |
| * @param srcs List of files to be copied. |
| */ |
| CopyJob(Context service, Context appContext, Listener listener, |
| String id, DocumentStack destination, List<DocumentInfo> srcs) { |
| super(service, appContext, listener, OPERATION_COPY, id, destination); |
| |
| checkArgument(!srcs.isEmpty()); |
| this.mSrcFiles = srcs; |
| } |
| |
| /** |
| * @see @link {@link Job} constructor for most param descriptions. |
| * |
| * @param srcs List of files to be copied. |
| */ |
| CopyJob(Context service, Context appContext, Listener listener, |
| @OpType int opType, String id, DocumentStack destination, List<DocumentInfo> srcs) { |
| super(service, appContext, listener, opType, id, destination); |
| |
| checkArgument(!srcs.isEmpty()); |
| this.mSrcFiles = srcs; |
| } |
| |
| @Override |
| Builder createProgressBuilder() { |
| return super.createProgressBuilder( |
| service.getString(R.string.copy_notification_title), |
| R.drawable.ic_menu_copy, |
| service.getString(android.R.string.cancel), |
| R.drawable.ic_cab_cancel); |
| } |
| |
| @Override |
| public Notification getSetupNotification() { |
| return getSetupNotification(service.getString(R.string.copy_preparing)); |
| } |
| |
| public boolean shouldUpdateProgress() { |
| // Wait a while between updates :) |
| return elapsedRealtime() - mLastNotificationTime > PROGRESS_INTERVAL_MILLIS; |
| } |
| |
| Notification getProgressNotification(@StringRes int msgId) { |
| double completed = (double) this.mBytesCopied / mBatchSize; |
| mProgressBuilder.setProgress(100, (int) (completed * 100), false); |
| mProgressBuilder.setContentInfo( |
| NumberFormat.getPercentInstance().format(completed)); |
| if (mRemainingTime > 0) { |
| mProgressBuilder.setContentText(service.getString(msgId, |
| DateUtils.formatDuration(mRemainingTime))); |
| } else { |
| mProgressBuilder.setContentText(null); |
| } |
| |
| // Remember when we last returned progress so we can provide an answer |
| // in shouldUpdateProgress. |
| mLastNotificationTime = elapsedRealtime(); |
| return mProgressBuilder.build(); |
| } |
| |
| public Notification getProgressNotification() { |
| return getProgressNotification(R.string.copy_remaining); |
| } |
| |
| void onBytesCopied(long numBytes) { |
| this.mBytesCopied += numBytes; |
| } |
| |
| /** |
| * Generates an estimate of the remaining time in the copy. |
| */ |
| void updateRemainingTimeEstimate() { |
| long elapsedTime = elapsedRealtime() - mStartTime; |
| |
| final long sampleDuration = elapsedTime - mSampleTime; |
| final long sampleSpeed = ((mBytesCopied - mBytesCopiedSample) * 1000) / sampleDuration; |
| if (mSpeed == 0) { |
| mSpeed = sampleSpeed; |
| } else { |
| mSpeed = ((3 * mSpeed) + sampleSpeed) / 4; |
| } |
| |
| if (mSampleTime > 0 && mSpeed > 0) { |
| mRemainingTime = ((mBatchSize - mBytesCopied) * 1000) / mSpeed; |
| } else { |
| mRemainingTime = 0; |
| } |
| |
| mSampleTime = elapsedTime; |
| mBytesCopiedSample = mBytesCopied; |
| } |
| |
| @Override |
| Notification getFailureNotification() { |
| return getFailureNotification( |
| R.plurals.copy_error_notification_title, R.drawable.ic_menu_copy); |
| } |
| |
| @Override |
| void start() throws RemoteException { |
| mStartTime = elapsedRealtime(); |
| |
| // Acquire content providers. |
| srcClient = acquireUnstableProviderOrThrow( |
| getContentResolver(), |
| mSrcFiles.get(0).authority); |
| dstClient = acquireUnstableProviderOrThrow( |
| getContentResolver(), |
| stack.peek().authority); |
| |
| // client |
| mBatchSize = calculateSize(srcClient, mSrcFiles); |
| |
| DocumentInfo srcInfo; |
| DocumentInfo dstInfo; |
| for (int i = 0; i < mSrcFiles.size() && !isCanceled(); ++i) { |
| srcInfo = mSrcFiles.get(i); |
| dstInfo = stack.peek(); |
| |
| // Guard unsupported recursive operation. |
| if (dstInfo.equals(srcInfo) || isDescendentOf(srcInfo, dstInfo)) { |
| onFileFailed(srcInfo, |
| "Skipping recursive operation on directory " + dstInfo.derivedUri + "."); |
| continue; |
| } |
| |
| if (DEBUG) Log.d(TAG, |
| "Copying " + srcInfo.displayName + " (" + srcInfo.derivedUri + ")" |
| + " to " + dstInfo.displayName + " (" + dstInfo.derivedUri + ")"); |
| |
| processDocument(srcInfo, dstInfo); |
| } |
| } |
| |
| /** |
| * Logs progress on the current copy operation. Displays/Updates the progress notification. |
| * |
| * @param bytesCopied |
| */ |
| private void makeCopyProgress(long bytesCopied) { |
| onBytesCopied(bytesCopied); |
| if (shouldUpdateProgress()) { |
| updateRemainingTimeEstimate(); |
| listener.onProgress(this); |
| } |
| } |
| |
| /** |
| * Copies a the given document to the given location. |
| * |
| * @param srcInfo DocumentInfos for the documents to copy. |
| * @param dstDirInfo The destination directory. |
| * @return True on success, false on failure. |
| * @throws RemoteException |
| */ |
| boolean processDocument(DocumentInfo srcInfo, DocumentInfo dstDirInfo) throws RemoteException { |
| |
| // TODO: When optimized copy kicks in, we'll not making any progress updates. |
| // For now. Local storage isn't using optimized copy. |
| |
| // When copying within the same provider, try to use optimized copying. |
| // If not supported, then fallback to byte-by-byte copy/move. |
| if (srcInfo.authority.equals(dstDirInfo.authority)) { |
| if ((srcInfo.flags & Document.FLAG_SUPPORTS_COPY) != 0) { |
| if (DocumentsContract.copyDocument(srcClient, srcInfo.derivedUri, |
| dstDirInfo.derivedUri) == null) { |
| onFileFailed(srcInfo, |
| "Provider side copy failed for documents: " + srcInfo.derivedUri + "."); |
| return false; |
| } |
| return true; |
| } |
| } |
| |
| // If we couldn't do an optimized copy...we fall back to vanilla byte copy. |
| return byteCopyDocument(srcInfo, dstDirInfo); |
| } |
| |
| boolean byteCopyDocument(DocumentInfo srcInfo, DocumentInfo dstDirInfo) |
| throws RemoteException { |
| final String dstMimeType; |
| final String dstDisplayName; |
| |
| if (DEBUG) Log.d(TAG, "Doing byte copy of document: " + srcInfo); |
| // If the file is virtual, but can be converted to another format, then try to copy it |
| // as such format. Also, append an extension for the target mime type (if known). |
| if (srcInfo.isVirtualDocument()) { |
| final String[] streamTypes = getContentResolver().getStreamTypes( |
| srcInfo.derivedUri, "*/*"); |
| if (streamTypes != null && streamTypes.length > 0) { |
| dstMimeType = streamTypes[0]; |
| final String extension = MimeTypeMap.getSingleton(). |
| getExtensionFromMimeType(dstMimeType); |
| dstDisplayName = srcInfo.displayName + |
| (extension != null ? "." + extension : srcInfo.displayName); |
| } else { |
| onFileFailed(srcInfo, "Cannot copy virtual file. No streamable formats available."); |
| return false; |
| } |
| } else { |
| dstMimeType = srcInfo.mimeType; |
| dstDisplayName = srcInfo.displayName; |
| } |
| |
| // Create the target document (either a file or a directory), then copy recursively the |
| // contents (bytes or children). |
| final Uri dstUri = DocumentsContract.createDocument(dstClient, |
| dstDirInfo.derivedUri, dstMimeType, dstDisplayName); |
| if (dstUri == null) { |
| // If this is a directory, the entire subdir will not be copied over. |
| onFileFailed(srcInfo, |
| "Couldn't create destination document " + dstDisplayName |
| + " in directory " + dstDirInfo.displayName + "."); |
| return false; |
| } |
| |
| DocumentInfo dstInfo = null; |
| try { |
| dstInfo = DocumentInfo.fromUri(getContentResolver(), dstUri); |
| } catch (FileNotFoundException e) { |
| onFileFailed(srcInfo, |
| "Could not load DocumentInfo for newly created file: " + dstUri + "."); |
| return false; |
| } |
| |
| final boolean success; |
| if (Document.MIME_TYPE_DIR.equals(srcInfo.mimeType)) { |
| success = copyDirectoryHelper(srcInfo, dstInfo); |
| } else { |
| success = copyFileHelper(srcInfo, dstInfo, dstMimeType); |
| } |
| |
| return success; |
| } |
| |
| /** |
| * Handles recursion into a directory and copying its contents. Note that in linux terms, this |
| * does the equivalent of "cp src/* dst", not "cp -r src dst". |
| * |
| * @param srcDirInfo Info of the directory to copy from. The routine will copy the directory's |
| * contents, not the directory itself. |
| * @param dstDirInfo Info of the directory to copy to. Must be created beforehand. |
| * @return True on success, false if some of the children failed to copy. |
| * @throws RemoteException |
| */ |
| private boolean copyDirectoryHelper(DocumentInfo srcDirInfo, DocumentInfo dstDirInfo) |
| throws RemoteException { |
| // Recurse into directories. Copy children into the new subdirectory. |
| final String queryColumns[] = new String[] { |
| Document.COLUMN_DISPLAY_NAME, |
| Document.COLUMN_DOCUMENT_ID, |
| Document.COLUMN_MIME_TYPE, |
| Document.COLUMN_SIZE, |
| Document.COLUMN_FLAGS |
| }; |
| Cursor cursor = null; |
| boolean success = true; |
| try { |
| // Iterate over srcs in the directory; copy to the destination directory. |
| final Uri queryUri = DocumentsContract.buildChildDocumentsUri(srcDirInfo.authority, |
| srcDirInfo.documentId); |
| cursor = srcClient.query(queryUri, queryColumns, null, null, null); |
| DocumentInfo srcInfo; |
| while (cursor.moveToNext() && !isCanceled()) { |
| srcInfo = DocumentInfo.fromCursor(cursor, srcDirInfo.authority); |
| success &= processDocument(srcInfo, dstDirInfo); |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| |
| return success; |
| } |
| |
| /** |
| * Handles copying a single file. |
| * |
| * @param srcUriInfo Info of the file to copy from. |
| * @param dstUriInfo Info of the *file* to copy to. Must be created beforehand. |
| * @param mimeType Mime type for the target. Can be different than source for virtual files. |
| * @return True on success, false on error. |
| * @throws RemoteException |
| */ |
| private boolean copyFileHelper(DocumentInfo srcInfo, DocumentInfo dstInfo, String mimeType) |
| throws RemoteException { |
| // Copy an individual file. |
| CancellationSignal canceller = new CancellationSignal(); |
| ParcelFileDescriptor srcFile = null; |
| ParcelFileDescriptor dstFile = null; |
| InputStream src = null; |
| OutputStream dst = null; |
| |
| boolean success = true; |
| try { |
| // If the file is virtual, but can be converted to another format, then try to copy it |
| // as such format. |
| if (srcInfo.isVirtualDocument()) { |
| final AssetFileDescriptor srcFileAsAsset = |
| srcClient.openTypedAssetFileDescriptor( |
| srcInfo.derivedUri, mimeType, null, canceller); |
| srcFile = srcFileAsAsset.getParcelFileDescriptor(); |
| src = new AssetFileDescriptor.AutoCloseInputStream(srcFileAsAsset); |
| } else { |
| srcFile = srcClient.openFile(srcInfo.derivedUri, "r", canceller); |
| src = new ParcelFileDescriptor.AutoCloseInputStream(srcFile); |
| } |
| |
| dstFile = dstClient.openFile(dstInfo.derivedUri, "w", canceller); |
| dst = new ParcelFileDescriptor.AutoCloseOutputStream(dstFile); |
| |
| byte[] buffer = new byte[32 * 1024]; |
| int len; |
| while ((len = src.read(buffer)) != -1) { |
| if (isCanceled()) { |
| if (DEBUG) Log.d(TAG, "Canceled copy mid-copy. Id:" + id); |
| success = false; |
| break; |
| } |
| dst.write(buffer, 0, len); |
| makeCopyProgress(len); |
| } |
| |
| srcFile.checkError(); |
| } catch (IOException e) { |
| success = false; |
| onFileFailed(srcInfo, "Exception thrown while copying from " |
| + srcInfo.derivedUri + " to " + dstInfo.derivedUri + "."); |
| |
| if (dstFile != null) { |
| try { |
| dstFile.closeWithError(e.getMessage()); |
| } catch (IOException closeError) { |
| Log.e(TAG, "Error closing destination", closeError); |
| } |
| } |
| } finally { |
| // This also ensures the file descriptors are closed. |
| IoUtils.closeQuietly(src); |
| IoUtils.closeQuietly(dst); |
| } |
| |
| if (!success) { |
| if (DEBUG) Log.d(TAG, "Cleaning up failed operation leftovers."); |
| canceller.cancel(); |
| try { |
| DocumentsContract.deleteDocument(dstClient, dstInfo.derivedUri); |
| } catch (RemoteException e) { |
| // RemoteExceptions usually signal that the connection is dead, so there's no |
| // point attempting to continue. Propagate the exception up so the copy job is |
| // cancelled. |
| Log.w(TAG, "Failed to cleanup after copy error: " + srcInfo.derivedUri, e); |
| throw e; |
| } |
| } |
| |
| return success; |
| } |
| |
| /** |
| * Calculates the cumulative size of all the documents in the list. Directories are recursed |
| * into and totaled up. |
| * |
| * @param srcs |
| * @return Size in bytes. |
| * @throws RemoteException |
| */ |
| private static long calculateSize(ContentProviderClient client, List<DocumentInfo> srcs) |
| throws RemoteException { |
| long result = 0; |
| |
| for (DocumentInfo src : srcs) { |
| if (src.isDirectory()) { |
| // Directories need to be recursed into. |
| result += calculateFileSizesRecursively(client, src.derivedUri); |
| } else { |
| result += src.size; |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * Calculates (recursively) the cumulative size of all the files under the given directory. |
| * |
| * @throws RemoteException |
| */ |
| private static long calculateFileSizesRecursively( |
| ContentProviderClient client, Uri uri) throws RemoteException { |
| final String authority = uri.getAuthority(); |
| final Uri queryUri = buildChildDocumentsUri(authority, getDocumentId(uri)); |
| final String queryColumns[] = new String[] { |
| Document.COLUMN_DOCUMENT_ID, |
| Document.COLUMN_MIME_TYPE, |
| Document.COLUMN_SIZE |
| }; |
| |
| long result = 0; |
| Cursor cursor = null; |
| try { |
| cursor = client.query(queryUri, queryColumns, null, null, null); |
| while (cursor.moveToNext()) { |
| if (Document.MIME_TYPE_DIR.equals( |
| getCursorString(cursor, Document.COLUMN_MIME_TYPE))) { |
| // Recurse into directories. |
| final Uri dirUri = buildDocumentUri(authority, |
| getCursorString(cursor, Document.COLUMN_DOCUMENT_ID)); |
| result += calculateFileSizesRecursively(client, dirUri); |
| } else { |
| // This may return -1 if the size isn't defined. Ignore those cases. |
| long size = getCursorLong(cursor, Document.COLUMN_SIZE); |
| result += size > 0 ? size : 0; |
| } |
| } |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| |
| return result; |
| } |
| |
| @Override |
| void cleanup() { |
| ContentProviderClient.releaseQuietly(srcClient); |
| ContentProviderClient.releaseQuietly(dstClient); |
| } |
| |
| /** |
| * Returns true if {@code doc} is a descendant of {@code parentDoc}. |
| * @throws RemoteException |
| */ |
| boolean isDescendentOf(DocumentInfo doc, DocumentInfo parentDoc) |
| throws RemoteException { |
| if (parentDoc.isDirectory() && doc.authority.equals(parentDoc.authority)) { |
| return isChildDocument(dstClient, doc.derivedUri, parentDoc.derivedUri); |
| } |
| return false; |
| } |
| |
| private void onFileFailed(DocumentInfo file, String msg) { |
| Log.w(TAG, msg); |
| onFileFailed(file); |
| } |
| } |