Simulate running out of space in StubProvider. (30b66946) · Commits · e / os / android_frameworks_base

packages/DocumentsUI/tests/src/com/android/documentsui/StubProvider.java

+76 −5

Original line number	Diff line number	Diff line
		@@ -30,6 +30,8 @@ import android.provider.DocumentsContract.Root;
		import android.provider.DocumentsContract.Root;
		import android.provider.DocumentsProvider;

		import java.io.FileInputStream;
		import java.io.FileOutputStream;
		import java.io.File;
		import java.io.FileNotFoundException;
		import java.io.IOException;
		@@ -52,6 +54,7 @@ public class StubProvider extends DocumentsProvider {
		private String mRootDocumentId;
		private HashMap<String, File> mStorage = new HashMap<String, File>();
		private int mStorageUsedBytes;
		private Object mWriteLock = new Object();

		@Override
		public boolean onCreate() {
		@@ -147,11 +150,11 @@ public class StubProvider extends DocumentsProvider {
		@Override
		public ParcelFileDescriptor openDocument(String docId, String mode, CancellationSignal signal)
		throws FileNotFoundException {
		final File file = mStorage.get(docId);
		if (file == null \|\| !file.isFile())
		// TODO: Add support for reading files.
		if ("w".equals(mode)) {
		return startWrite(docId);
		}
		throw new FileNotFoundException();
		// TODO: Simulate running out of storage.
		return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_WRITE);
		}

		@Override
		@@ -160,6 +163,74 @@ public class StubProvider extends DocumentsProvider {
		throw new FileNotFoundException();
		}

		private ParcelFileDescriptor startWrite(String docId)
		throws FileNotFoundException {
		final File file = mStorage.get(docId);
		if (file == null \|\| !file.isFile())
		throw new FileNotFoundException();
		ParcelFileDescriptor[] pipe;
		try {
		pipe = ParcelFileDescriptor.createReliablePipe();
		}
		catch (IOException exception) {
		throw new FileNotFoundException();
		}
		final ParcelFileDescriptor readPipe = pipe[0];
		final ParcelFileDescriptor writePipe = pipe[1];

		new Thread() {
		@Override
		public void run() {
		try {
		final FileInputStream inputStream = new FileInputStream(readPipe.getFileDescriptor());
		final FileOutputStream outputStream = new FileOutputStream(file);
		byte[] buffer = new byte[32 * 1024];
		int bytesToRead;
		int bytesRead = 0;
		while (bytesRead != -1) {
		synchronized (mWriteLock) {
		bytesToRead = Math.min(STORAGE_SIZE - mStorageUsedBytes, buffer.length);
		if (bytesToRead == 0) {
		closePipeWithErrorSilently(readPipe, "Not enough space.");
		break;
		}
		bytesRead = inputStream.read(buffer, 0, bytesToRead);
		if (bytesRead == -1) {
		break;
		}
		outputStream.write(buffer, 0, bytesRead);
		mStorageUsedBytes += bytesRead;
		}
		}
		}
		catch (IOException e) {
		closePipeWithErrorSilently(readPipe, e.getMessage());
		}
		finally {
		closePipeSilently(readPipe);
		}
		}
		}.start();

		return writePipe;
		}

		private void closePipeWithErrorSilently(ParcelFileDescriptor pipe, String error) {
		try {
		pipe.closeWithError(error);
		}
		catch (IOException ignore) {
		}
		}

		private void closePipeSilently(ParcelFileDescriptor pipe) {
		try {
		pipe.close();
		}
		catch (IOException ignore) {
		}
		}

		private void includeFile(MatrixCursor result, File file) {
		final RowBuilder row = result.newRow();
		row.add(Document.COLUMN_DOCUMENT_ID, getDocumentIdForFile(file));