Examples with ByteBufferAsyncWritableChannel com.github.ambry.commons.ByteBufferAsyncWritableChannel used on opensource projects

Example 1 with ByteBufferAsyncWritableChannel

use of com.github.ambry.commons.ByteBufferAsyncWritableChannel in project ambry by linkedin.

the class NettyMultipartRequestTest method operationsAfterCloseTest.

/**
 * Tests the expected behavior of operations after {@link NettyMultipartRequest#close()} has been called.
 * @throws Exception
 */
@Test
public void operationsAfterCloseTest() throws Exception {
    NettyMultipartRequest request = createRequest(null, null);
    request.prepare();
    closeRequestAndValidate(request);
    // close should be idempotent.
    request.close();
    try {
        request.readInto(new ByteBufferAsyncWritableChannel(), null).get();
        fail("Reading should have failed because request is closed");
    } catch (ExecutionException e) {
        assertEquals("Unexpected exception", ClosedChannelException.class, Utils.getRootCause(e).getClass());
    }
    try {
        request.prepare();
        fail("Preparing should have failed because request is closed");
    } catch (RestServiceException e) {
        assertEquals("Unexpected RestServiceErrorCode", RestServiceErrorCode.RequestChannelClosed, e.getErrorCode());
    }
    try {
        request.addContent(new DefaultHttpContent(Unpooled.wrappedBuffer(TestUtils.getRandomBytes(10))));
        fail("Content addition should have failed because request is closed");
    } catch (RestServiceException e) {
        assertEquals("Unexpected RestServiceErrorCode", RestServiceErrorCode.RequestChannelClosed, e.getErrorCode());
    }
}

Example 2 with ByteBufferAsyncWritableChannel

use of com.github.ambry.commons.ByteBufferAsyncWritableChannel in project ambry by linkedin.

the class CopyForcingByteBuf method doHeaderAndContentSizeMismatchTest.

/**
 * Tests reaction of NettyRequest when content size is different from the size specified in the headers.
 * @param httpHeaders {@link HttpHeaders} that need to be a part of the request.
 * @param httpContents the {@link List<HttpContent>} that needs to be added to {@code nettyRequest}.
 * @throws Exception
 */
private void doHeaderAndContentSizeMismatchTest(HttpHeaders httpHeaders, List<HttpContent> httpContents) throws Exception {
    Channel channel = new MockChannel();
    NettyRequest nettyRequest = createNettyRequest(HttpMethod.POST, "/", httpHeaders, channel);
    AsyncWritableChannel writeChannel = new ByteBufferAsyncWritableChannel();
    ReadIntoCallback callback = new ReadIntoCallback();
    Future<Long> future = nettyRequest.readInto(writeChannel, callback);
    int bytesAdded = 0;
    HttpContent httpContentToAdd = null;
    for (HttpContent httpContent : httpContents) {
        httpContentToAdd = httpContent;
        int contentBytes = httpContentToAdd.content().readableBytes();
        if (!(httpContentToAdd instanceof LastHttpContent) && (bytesAdded + contentBytes <= nettyRequest.getSize())) {
            nettyRequest.addContent(httpContentToAdd);
            assertEquals("Reference count is not as expected", 2, httpContentToAdd.refCnt());
            bytesAdded += contentBytes;
        } else {
            break;
        }
    }
    // the addition of the next content should throw an exception.
    try {
        nettyRequest.addContent(httpContentToAdd);
        fail("Adding content should have failed because there was a mismatch in size");
    } catch (RestServiceException e) {
        assertEquals("Unexpected RestServiceErrorCode", RestServiceErrorCode.BadRequest, e.getErrorCode());
    }
    closeRequestAndValidate(nettyRequest, channel);
    writeChannel.close();
    verifyRefCnts(httpContents);
    callback.awaitCallback();
    assertNotNull("There should be a RestServiceException in the callback", callback.exception);
    assertEquals("Unexpected RestServiceErrorCode", RestServiceErrorCode.BadRequest, ((RestServiceException) callback.exception).getErrorCode());
    try {
        future.get();
        fail("Should have thrown exception because the future is expected to have been given one");
    } catch (ExecutionException e) {
        RestServiceException restServiceException = (RestServiceException) Utils.getRootCause(e);
        assertNotNull("There should be a RestServiceException in the future", restServiceException);
        assertEquals("Unexpected RestServiceErrorCode", RestServiceErrorCode.BadRequest, restServiceException.getErrorCode());
    }
}

Example 3 with ByteBufferAsyncWritableChannel

use of com.github.ambry.commons.ByteBufferAsyncWritableChannel in project ambry by linkedin.

the class CopyForcingByteBuf method readIntoExceptionsTest.

/**
 * Tests exception scenarios of {@link NettyRequest#readInto(AsyncWritableChannel, Callback)} and behavior of
 * {@link NettyRequest} when {@link AsyncWritableChannel} instances fail.
 * @throws Exception
 */
@Test
public void readIntoExceptionsTest() throws Exception {
    Channel channel = new MockChannel();
    // try to call readInto twice.
    NettyRequest nettyRequest = createNettyRequest(HttpMethod.POST, "/", null, channel);
    AsyncWritableChannel writeChannel = new ByteBufferAsyncWritableChannel();
    nettyRequest.readInto(writeChannel, null);
    try {
        nettyRequest.readInto(writeChannel, null);
        fail("Calling readInto twice should have failed");
    } catch (IllegalStateException e) {
    // expected. Nothing to do.
    }
    closeRequestAndValidate(nettyRequest, channel);
    // write into a channel that throws exceptions
    // non RuntimeException
    nettyRequest = createNettyRequest(HttpMethod.POST, "/", null, channel);
    List<HttpContent> httpContents = new ArrayList<HttpContent>();
    generateContent(httpContents);
    assertTrue("Not enough content has been generated", httpContents.size() > 2);
    String expectedMsg = "@@expectedMsg@@";
    Exception exception = new Exception(expectedMsg);
    writeChannel = new BadAsyncWritableChannel(exception);
    ReadIntoCallback callback = new ReadIntoCallback();
    // add content initially
    int addedCount = 0;
    for (; addedCount < httpContents.size() / 2; addedCount++) {
        HttpContent httpContent = httpContents.get(addedCount);
        nettyRequest.addContent(httpContent);
        assertEquals("Reference count is not as expected", 2, httpContent.refCnt());
    }
    Future<Long> future = nettyRequest.readInto(writeChannel, callback);
    // add some more content
    for (; addedCount < httpContents.size(); addedCount++) {
        HttpContent httpContent = httpContents.get(addedCount);
        nettyRequest.addContent(httpContent);
    }
    writeChannel.close();
    verifyRefCnts(httpContents);
    callback.awaitCallback();
    assertNotNull("Exception was not piped correctly", callback.exception);
    assertEquals("Exception message mismatch (callback)", expectedMsg, callback.exception.getMessage());
    try {
        future.get();
        fail("Future should have thrown exception");
    } catch (ExecutionException e) {
        assertEquals("Exception message mismatch (future)", expectedMsg, Utils.getRootCause(e).getMessage());
    }
    closeRequestAndValidate(nettyRequest, channel);
    // RuntimeException
    // during readInto
    nettyRequest = createNettyRequest(HttpMethod.POST, "/", null, channel);
    httpContents = new ArrayList<HttpContent>();
    generateContent(httpContents);
    exception = new IllegalStateException(expectedMsg);
    writeChannel = new BadAsyncWritableChannel(exception);
    callback = new ReadIntoCallback();
    for (HttpContent httpContent : httpContents) {
        nettyRequest.addContent(httpContent);
        assertEquals("Reference count is not as expected", 2, httpContent.refCnt());
    }
    try {
        nettyRequest.readInto(writeChannel, callback);
        fail("readInto did not throw expected exception");
    } catch (Exception e) {
        assertEquals("Exception caught does not match expected exception", expectedMsg, e.getMessage());
    }
    writeChannel.close();
    closeRequestAndValidate(nettyRequest, channel);
    verifyRefCnts(httpContents);
    // after readInto
    nettyRequest = createNettyRequest(HttpMethod.POST, "/", null, channel);
    httpContents = new ArrayList<HttpContent>();
    generateContent(httpContents);
    exception = new IllegalStateException(expectedMsg);
    writeChannel = new BadAsyncWritableChannel(exception);
    callback = new ReadIntoCallback();
    nettyRequest.readInto(writeChannel, callback);
    // add content
    HttpContent httpContent = httpContents.get(1);
    try {
        nettyRequest.addContent(httpContent);
        fail("addContent did not throw expected exception");
    } catch (Exception e) {
        assertEquals("Exception caught does not match expected exception", expectedMsg, e.getMessage());
    }
    writeChannel.close();
    closeRequestAndValidate(nettyRequest, channel);
    verifyRefCnts(httpContents);
}

Example 4 with ByteBufferAsyncWritableChannel

use of com.github.ambry.commons.ByteBufferAsyncWritableChannel in project ambry by linkedin.

the class CopyForcingByteBuf method setDigestAfterReadTest.

// digestIncorrectUsageTest() helpers.
/**
 * Tests for failure when {@link NettyRequest#setDigestAlgorithm(String)} after
 * {@link NettyRequest#readInto(AsyncWritableChannel, Callback)} is called.
 * @throws NoSuchAlgorithmException
 * @throws RestServiceException
 */
private void setDigestAfterReadTest() throws NoSuchAlgorithmException, RestServiceException {
    List<HttpContent> httpContents = new ArrayList<HttpContent>();
    generateContent(httpContents);
    Channel channel = new MockChannel();
    NettyRequest nettyRequest = createNettyRequest(HttpMethod.POST, "/", null, channel);
    ByteBufferAsyncWritableChannel writeChannel = new ByteBufferAsyncWritableChannel();
    ReadIntoCallback callback = new ReadIntoCallback();
    nettyRequest.readInto(writeChannel, callback);
    try {
        nettyRequest.setDigestAlgorithm("MD5");
        fail("Setting a digest algorithm should have failed because readInto() has already been called");
    } catch (IllegalStateException e) {
    // expected. Nothing to do.
    }
    writeChannel.close();
    closeRequestAndValidate(nettyRequest, channel);
}

Example 5 with ByteBufferAsyncWritableChannel

use of com.github.ambry.commons.ByteBufferAsyncWritableChannel in project ambry by linkedin.

the class CopyForcingByteBuf method doBackPressureTest.

/**
 * Does the backpressure test by ensuring that {@link Channel#read()} isn't called when the number of bytes buffered
 * is above the {@link NettyRequest#bufferWatermark}. Also ensures that {@link Channel#read()} is called correctly
 * when the number of buffered bytes falls below the {@link NettyRequest#bufferWatermark}.
 * @param digestAlgorithm the digest algorithm to use. Can be empty or {@code null} if digest checking is not
 *                        required.
 * @param content the complete content.
 * @param httpContents {@code content} in parts and as {@link HttpContent}. Should contain all the data in
 * {@code content}.
 * @param numChunksToAddBeforeRead the number of {@link HttpContent} to add before making the
 * {@link NettyRequest#readInto(AsyncWritableChannel, Callback)} call.
 * @param method Http Method
 * @throws Exception
 */
private void doBackPressureTest(String digestAlgorithm, ByteBuffer content, List<HttpContent> httpContents, int numChunksToAddBeforeRead, HttpMethod method) throws Exception {
    if (numChunksToAddBeforeRead < 0 || numChunksToAddBeforeRead > httpContents.size()) {
        throw new IllegalArgumentException("Illegal value of numChunksToAddBeforeRead");
    }
    MockChannel channel = new MockChannel();
    final NettyRequest nettyRequest = createNettyRequest(method, "/", null, channel);
    byte[] wholeDigest = null;
    if (digestAlgorithm != null && !digestAlgorithm.isEmpty()) {
        MessageDigest digest = MessageDigest.getInstance(digestAlgorithm);
        digest.update(content);
        wholeDigest = digest.digest();
        content.rewind();
        nettyRequest.setDigestAlgorithm(digestAlgorithm);
    }
    final AtomicInteger queuedReads = new AtomicInteger(0);
    ByteBufferAsyncWritableChannel writeChannel = new ByteBufferAsyncWritableChannel();
    ReadIntoCallback callback = new ReadIntoCallback();
    channel.setChannelReadCallback(new MockChannel.ChannelReadCallback() {

        @Override
        public void onRead() {
            queuedReads.incrementAndGet();
        }
    });
    int addedCount = 0;
    Future<Long> future = null;
    boolean suspended = false;
    int bytesToVerify = 0;
    while (addedCount < httpContents.size()) {
        if (suspended) {
            assertEquals("There should have been no reads queued when over buffer watermark", 0, queuedReads.get());
            if (future == null) {
                future = nettyRequest.readInto(writeChannel, callback);
            }
            int chunksRead = readAndVerify(bytesToVerify, writeChannel, content);
            assertEquals("Number of reads triggered is not as expected", chunksRead, queuedReads.get());
            // collapse many reads into one
            queuedReads.set(1);
            bytesToVerify = 0;
            suspended = false;
        } else {
            assertEquals("There should have been only one read queued", 1, queuedReads.get());
            queuedReads.set(0);
            if (future == null && addedCount == numChunksToAddBeforeRead) {
                future = nettyRequest.readInto(writeChannel, callback);
            }
            final HttpContent httpContent = httpContents.get(addedCount);
            bytesToVerify += (httpContent.content().readableBytes());
            suspended = bytesToVerify >= NettyRequest.bufferWatermark;
            addedCount++;
            nettyRequest.addContent(httpContent);
            assertEquals("Reference count is not as expected", 2, httpContent.refCnt());
        }
    }
    if (future == null) {
        future = nettyRequest.readInto(writeChannel, callback);
    }
    readAndVerify(bytesToVerify, writeChannel, content);
    verifyRefCnts(httpContents);
    writeChannel.close();
    callback.awaitCallback();
    if (callback.exception != null) {
        throw callback.exception;
    }
    long futureBytesRead = future.get(1, TimeUnit.SECONDS);
    assertEquals("Total bytes read does not match (callback)", content.limit(), callback.bytesRead);
    assertEquals("Total bytes read does not match (future)", content.limit(), futureBytesRead);
    // check twice to make sure the same digest is returned every time
    for (int i = 0; i < 2; i++) {
        assertArrayEquals("Part by part digest should match digest of whole", wholeDigest, nettyRequest.getDigest());
    }
    closeRequestAndValidate(nettyRequest, channel);
}