diff options
Diffstat (limited to 'qpid/java/bdbstore/systests/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBMessageStoreTest.java')
| -rw-r--r-- | qpid/java/bdbstore/systests/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBMessageStoreTest.java | 612 |
1 files changed, 612 insertions, 0 deletions
diff --git a/qpid/java/bdbstore/systests/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBMessageStoreTest.java b/qpid/java/bdbstore/systests/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBMessageStoreTest.java new file mode 100644 index 0000000000..76b990038d --- /dev/null +++ b/qpid/java/bdbstore/systests/src/main/java/org/apache/qpid/server/store/berkeleydb/BDBMessageStoreTest.java @@ -0,0 +1,612 @@ +/* + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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 org.apache.qpid.server.store.berkeleydb; + +import java.io.File; +import java.nio.ByteBuffer; +import java.util.Arrays; +import java.util.List; +import java.util.UUID; +import org.apache.qpid.AMQStoreException; +import org.apache.qpid.framing.AMQShortString; +import org.apache.qpid.framing.BasicContentHeaderProperties; +import org.apache.qpid.framing.ContentHeaderBody; +import org.apache.qpid.framing.MethodRegistry; +import org.apache.qpid.framing.ProtocolVersion; +import org.apache.qpid.framing.abstraction.MessagePublishInfo; +import org.apache.qpid.server.message.AMQMessageHeader; +import org.apache.qpid.server.message.EnqueableMessage; +import org.apache.qpid.server.protocol.v0_10.MessageMetaDataType_0_10; +import org.apache.qpid.server.protocol.v0_8.MessageMetaData; +import org.apache.qpid.server.protocol.v0_10.MessageMetaData_0_10; +import org.apache.qpid.server.message.MessageReference; +import org.apache.qpid.server.message.ServerMessage; +import org.apache.qpid.server.model.UUIDGenerator; +import org.apache.qpid.server.protocol.v0_8.MessageMetaDataType_0_8; +import org.apache.qpid.server.store.MessageStoreTest; +import org.apache.qpid.server.store.MessageStore; +import org.apache.qpid.server.store.StorableMessageMetaData; +import org.apache.qpid.server.store.StoredMessage; +import org.apache.qpid.server.store.Transaction; +import org.apache.qpid.server.store.TransactionLogResource; +import org.apache.qpid.transport.DeliveryProperties; +import org.apache.qpid.transport.Header; +import org.apache.qpid.transport.MessageAcceptMode; +import org.apache.qpid.transport.MessageAcquireMode; +import org.apache.qpid.transport.MessageDeliveryMode; +import org.apache.qpid.transport.MessageDeliveryPriority; +import org.apache.qpid.transport.MessageProperties; +import org.apache.qpid.transport.MessageTransfer; + +/** + * Subclass of MessageStoreTest which runs the standard tests from the superclass against + * the BDB Store as well as additional tests specific to the BDB store-implementation. + */ +public class BDBMessageStoreTest extends MessageStoreTest +{ + private static byte[] CONTENT_BYTES = new byte[] {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; + + /** + * Tests that message metadata and content are successfully read back from a + * store after it has been reloaded. Both 0-8 and 0-10 metadata is used to + * verify their ability to co-exist within the store and be successful retrieved. + */ + public void testBDBMessagePersistence() throws Exception + { + MessageStore store = getVirtualHost().getMessageStore(); + + AbstractBDBMessageStore bdbStore = assertBDBStore(store); + + // Create content ByteBuffers. + // Split the content into 2 chunks for the 0-8 message, as per broker behaviour. + // Use a single chunk for the 0-10 message as per broker behaviour. + String bodyText = "jfhdjsflsdhfjdshfjdslhfjdslhfsjlhfsjkhfdsjkhfdsjkfhdslkjf"; + + ByteBuffer firstContentBytes_0_8 = ByteBuffer.wrap(bodyText.substring(0, 10).getBytes()); + ByteBuffer secondContentBytes_0_8 = ByteBuffer.wrap(bodyText.substring(10).getBytes()); + + ByteBuffer completeContentBody_0_10 = ByteBuffer.wrap(bodyText.getBytes()); + int bodySize = completeContentBody_0_10.limit(); + + /* + * Create and insert a 0-8 message (metadata and multi-chunk content) + */ + MessagePublishInfo pubInfoBody_0_8 = createPublishInfoBody_0_8(); + BasicContentHeaderProperties props_0_8 = createContentHeaderProperties_0_8(); + + ContentHeaderBody chb_0_8 = createContentHeaderBody_0_8(props_0_8, bodySize); + + MessageMetaData messageMetaData_0_8 = new MessageMetaData(pubInfoBody_0_8, chb_0_8, 0); + StoredMessage<MessageMetaData> storedMessage_0_8 = bdbStore.addMessage(messageMetaData_0_8); + + long origArrivalTime_0_8 = messageMetaData_0_8.getArrivalTime(); + long messageid_0_8 = storedMessage_0_8.getMessageNumber(); + + storedMessage_0_8.addContent(0, firstContentBytes_0_8); + storedMessage_0_8.addContent(firstContentBytes_0_8.limit(), secondContentBytes_0_8); + storedMessage_0_8.flushToStore(); + + /* + * Create and insert a 0-10 message (metadata and content) + */ + MessageProperties msgProps_0_10 = createMessageProperties_0_10(bodySize); + DeliveryProperties delProps_0_10 = createDeliveryProperties_0_10(); + Header header_0_10 = new Header(delProps_0_10, msgProps_0_10); + + MessageTransfer xfr_0_10 = new MessageTransfer("destination", MessageAcceptMode.EXPLICIT, + MessageAcquireMode.PRE_ACQUIRED, header_0_10, completeContentBody_0_10); + + MessageMetaData_0_10 messageMetaData_0_10 = new MessageMetaData_0_10(xfr_0_10); + StoredMessage<MessageMetaData_0_10> storedMessage_0_10 = bdbStore.addMessage(messageMetaData_0_10); + + long origArrivalTime_0_10 = messageMetaData_0_10.getArrivalTime(); + long messageid_0_10 = storedMessage_0_10.getMessageNumber(); + + storedMessage_0_10.addContent(0, completeContentBody_0_10); + storedMessage_0_10.flushToStore(); + + /* + * reload the store only (read-only) + */ + AbstractBDBMessageStore readOnlyStore = reloadStore(bdbStore); + + /* + * Read back and validate the 0-8 message metadata and content + */ + StorableMessageMetaData storeableMMD_0_8 = readOnlyStore.getMessageMetaData(messageid_0_8); + + assertEquals("Unexpected message type", MessageMetaDataType_0_8.TYPE, storeableMMD_0_8.getType().ordinal()); + assertTrue("Unexpected instance type", storeableMMD_0_8 instanceof MessageMetaData); + MessageMetaData returnedMMD_0_8 = (MessageMetaData) storeableMMD_0_8; + + assertEquals("Message arrival time has changed", origArrivalTime_0_8, returnedMMD_0_8.getArrivalTime()); + + MessagePublishInfo returnedPubBody_0_8 = returnedMMD_0_8.getMessagePublishInfo(); + assertEquals("Message exchange has changed", pubInfoBody_0_8.getExchange(), returnedPubBody_0_8.getExchange()); + assertEquals("Immediate flag has changed", pubInfoBody_0_8.isImmediate(), returnedPubBody_0_8.isImmediate()); + assertEquals("Mandatory flag has changed", pubInfoBody_0_8.isMandatory(), returnedPubBody_0_8.isMandatory()); + assertEquals("Routing key has changed", pubInfoBody_0_8.getRoutingKey(), returnedPubBody_0_8.getRoutingKey()); + + ContentHeaderBody returnedHeaderBody_0_8 = returnedMMD_0_8.getContentHeaderBody(); + assertEquals("ContentHeader ClassID has changed", chb_0_8.getClassId(), returnedHeaderBody_0_8.getClassId()); + assertEquals("ContentHeader weight has changed", chb_0_8.getWeight(), returnedHeaderBody_0_8.getWeight()); + assertEquals("ContentHeader bodySize has changed", chb_0_8.getBodySize(), returnedHeaderBody_0_8.getBodySize()); + + BasicContentHeaderProperties returnedProperties_0_8 = (BasicContentHeaderProperties) returnedHeaderBody_0_8.getProperties(); + assertEquals("Property ContentType has changed", props_0_8.getContentTypeAsString(), returnedProperties_0_8.getContentTypeAsString()); + assertEquals("Property MessageID has changed", props_0_8.getMessageIdAsString(), returnedProperties_0_8.getMessageIdAsString()); + + ByteBuffer recoveredContent_0_8 = ByteBuffer.allocate((int) chb_0_8.getBodySize()) ; + long recoveredCount_0_8 = readOnlyStore.getContent(messageid_0_8, 0, recoveredContent_0_8); + assertEquals("Incorrect amount of payload data recovered", chb_0_8.getBodySize(), recoveredCount_0_8); + String returnedPayloadString_0_8 = new String(recoveredContent_0_8.array()); + assertEquals("Message Payload has changed", bodyText, returnedPayloadString_0_8); + + /* + * Read back and validate the 0-10 message metadata and content + */ + StorableMessageMetaData storeableMMD_0_10 = readOnlyStore.getMessageMetaData(messageid_0_10); + + assertEquals("Unexpected message type", MessageMetaDataType_0_10.TYPE, storeableMMD_0_10.getType().ordinal()); + assertTrue("Unexpected instance type", storeableMMD_0_10 instanceof MessageMetaData_0_10); + MessageMetaData_0_10 returnedMMD_0_10 = (MessageMetaData_0_10) storeableMMD_0_10; + + assertEquals("Message arrival time has changed", origArrivalTime_0_10, returnedMMD_0_10.getArrivalTime()); + + DeliveryProperties returnedDelProps_0_10 = returnedMMD_0_10.getHeader().getDeliveryProperties(); + assertNotNull("DeliveryProperties were not returned", returnedDelProps_0_10); + assertEquals("Immediate flag has changed", delProps_0_10.getImmediate(), returnedDelProps_0_10.getImmediate()); + assertEquals("Routing key has changed", delProps_0_10.getRoutingKey(), returnedDelProps_0_10.getRoutingKey()); + assertEquals("Message exchange has changed", delProps_0_10.getExchange(), returnedDelProps_0_10.getExchange()); + assertEquals("Message expiration has changed", delProps_0_10.getExpiration(), returnedDelProps_0_10.getExpiration()); + assertEquals("Message delivery priority has changed", delProps_0_10.getPriority(), returnedDelProps_0_10.getPriority()); + + MessageProperties returnedMsgProps = returnedMMD_0_10.getHeader().getMessageProperties(); + assertNotNull("MessageProperties were not returned", returnedMsgProps); + assertTrue("Message correlationID has changed", Arrays.equals(msgProps_0_10.getCorrelationId(), returnedMsgProps.getCorrelationId())); + assertEquals("Message content length has changed", msgProps_0_10.getContentLength(), returnedMsgProps.getContentLength()); + assertEquals("Message content type has changed", msgProps_0_10.getContentType(), returnedMsgProps.getContentType()); + + ByteBuffer recoveredContent = ByteBuffer.allocate((int) msgProps_0_10.getContentLength()) ; + long recoveredCount = readOnlyStore.getContent(messageid_0_10, 0, recoveredContent); + assertEquals("Incorrect amount of payload data recovered", msgProps_0_10.getContentLength(), recoveredCount); + + String returnedPayloadString_0_10 = new String(recoveredContent.array()); + assertEquals("Message Payload has changed", bodyText, returnedPayloadString_0_10); + + readOnlyStore.close(); + } + + private DeliveryProperties createDeliveryProperties_0_10() + { + DeliveryProperties delProps_0_10 = new DeliveryProperties(); + + delProps_0_10.setDeliveryMode(MessageDeliveryMode.PERSISTENT); + delProps_0_10.setImmediate(true); + delProps_0_10.setExchange("exchange12345"); + delProps_0_10.setRoutingKey("routingKey12345"); + delProps_0_10.setExpiration(5); + delProps_0_10.setPriority(MessageDeliveryPriority.ABOVE_AVERAGE); + + return delProps_0_10; + } + + private MessageProperties createMessageProperties_0_10(int bodySize) + { + MessageProperties msgProps_0_10 = new MessageProperties(); + msgProps_0_10.setContentLength(bodySize); + msgProps_0_10.setCorrelationId("qwerty".getBytes()); + msgProps_0_10.setContentType("text/html"); + + return msgProps_0_10; + } + + /** + * Close the provided store and create a new (read-only) store to read back the data. + * + * Use this method instead of reloading the virtual host like other tests in order + * to avoid the recovery handler deleting the message for not being on a queue. + */ + private AbstractBDBMessageStore reloadStore(AbstractBDBMessageStore messageStore) throws Exception + { + messageStore.close(); + + AbstractBDBMessageStore newStore = new BDBMessageStore(); + newStore.configure(getVirtualHostModel(),true); + + newStore.startWithNoRecover(); + + return newStore; + } + + private MessagePublishInfo createPublishInfoBody_0_8() + { + return new MessagePublishInfo() + { + public AMQShortString getExchange() + { + return new AMQShortString("exchange12345"); + } + + public void setExchange(AMQShortString exchange) + { + } + + public boolean isImmediate() + { + return false; + } + + public boolean isMandatory() + { + return true; + } + + public AMQShortString getRoutingKey() + { + return new AMQShortString("routingKey12345"); + } + }; + + } + + private ContentHeaderBody createContentHeaderBody_0_8(BasicContentHeaderProperties props, int length) + { + MethodRegistry methodRegistry = MethodRegistry.getMethodRegistry(ProtocolVersion.v0_9); + int classForBasic = methodRegistry.createBasicQosOkBody().getClazz(); + return new ContentHeaderBody(classForBasic, 1, props, length); + } + + private BasicContentHeaderProperties createContentHeaderProperties_0_8() + { + BasicContentHeaderProperties props = new BasicContentHeaderProperties(); + props.setDeliveryMode(Integer.valueOf(BasicContentHeaderProperties.PERSISTENT).byteValue()); + props.setContentType("text/html"); + props.getHeaders().setString("Test", "MST"); + return props; + } + + public void testGetContentWithOffset() throws Exception + { + MessageStore store = getVirtualHost().getMessageStore(); + AbstractBDBMessageStore bdbStore = assertBDBStore(store); + StoredMessage<MessageMetaData> storedMessage_0_8 = createAndStoreSingleChunkMessage_0_8(store); + long messageid_0_8 = storedMessage_0_8.getMessageNumber(); + + // normal case: offset is 0 + ByteBuffer dst = ByteBuffer.allocate(10); + int length = bdbStore.getContent(messageid_0_8, 0, dst); + assertEquals("Unexpected length", CONTENT_BYTES.length, length); + byte[] array = dst.array(); + assertTrue("Unexpected content", Arrays.equals(CONTENT_BYTES, array)); + + // offset is in the middle + dst = ByteBuffer.allocate(10); + length = bdbStore.getContent(messageid_0_8, 5, dst); + assertEquals("Unexpected length", 5, length); + array = dst.array(); + byte[] expected = new byte[10]; + System.arraycopy(CONTENT_BYTES, 5, expected, 0, 5); + assertTrue("Unexpected content", Arrays.equals(expected, array)); + + // offset beyond the content length + dst = ByteBuffer.allocate(10); + try + { + bdbStore.getContent(messageid_0_8, 15, dst); + fail("Should fail for the offset greater than message size"); + } + catch (RuntimeException e) + { + assertEquals("Unexpected exception message", "Offset 15 is greater than message size 10 for message id " + + messageid_0_8 + "!", e.getMessage()); + } + + // buffer is smaller then message size + dst = ByteBuffer.allocate(5); + length = bdbStore.getContent(messageid_0_8, 0, dst); + assertEquals("Unexpected length", 5, length); + array = dst.array(); + expected = new byte[5]; + System.arraycopy(CONTENT_BYTES, 0, expected, 0, 5); + assertTrue("Unexpected content", Arrays.equals(expected, array)); + + // buffer is smaller then message size, offset is not 0 + dst = ByteBuffer.allocate(5); + length = bdbStore.getContent(messageid_0_8, 2, dst); + assertEquals("Unexpected length", 5, length); + array = dst.array(); + expected = new byte[5]; + System.arraycopy(CONTENT_BYTES, 2, expected, 0, 5); + assertTrue("Unexpected content", Arrays.equals(expected, array)); + } + /** + * Tests that messages which are added to the store and then removed using the + * public MessageStore interfaces are actually removed from the store by then + * interrogating the store with its own implementation methods and verifying + * expected exceptions are thrown to indicate the message is not present. + */ + public void testMessageCreationAndRemoval() throws Exception + { + MessageStore store = getVirtualHost().getMessageStore(); + AbstractBDBMessageStore bdbStore = assertBDBStore(store); + + StoredMessage<MessageMetaData> storedMessage_0_8 = createAndStoreSingleChunkMessage_0_8(store); + long messageid_0_8 = storedMessage_0_8.getMessageNumber(); + + bdbStore.removeMessage(messageid_0_8, true); + + //verify the removal using the BDB store implementation methods directly + try + { + // the next line should throw since the message id should not be found + bdbStore.getMessageMetaData(messageid_0_8); + fail("No exception thrown when message id not found getting metadata"); + } + catch (AMQStoreException e) + { + // pass since exception expected + } + + //expecting no content, allocate a 1 byte + ByteBuffer dst = ByteBuffer.allocate(1); + + assertEquals("Retrieved content when none was expected", + 0, bdbStore.getContent(messageid_0_8, 0, dst)); + } + private AbstractBDBMessageStore assertBDBStore(MessageStore store) + { + + assertEquals("Test requires an instance of BDBMessageStore to proceed", BDBMessageStore.class, store.getClass()); + + return (AbstractBDBMessageStore) store; + } + + private StoredMessage<MessageMetaData> createAndStoreSingleChunkMessage_0_8(MessageStore store) + { + ByteBuffer chunk1 = ByteBuffer.wrap(CONTENT_BYTES); + + int bodySize = CONTENT_BYTES.length; + + //create and store the message using the MessageStore interface + MessagePublishInfo pubInfoBody_0_8 = createPublishInfoBody_0_8(); + BasicContentHeaderProperties props_0_8 = createContentHeaderProperties_0_8(); + + ContentHeaderBody chb_0_8 = createContentHeaderBody_0_8(props_0_8, bodySize); + + MessageMetaData messageMetaData_0_8 = new MessageMetaData(pubInfoBody_0_8, chb_0_8, 0); + StoredMessage<MessageMetaData> storedMessage_0_8 = store.addMessage(messageMetaData_0_8); + + storedMessage_0_8.addContent(0, chunk1); + storedMessage_0_8.flushToStore(); + + return storedMessage_0_8; + } + + /** + * Tests transaction commit by utilising the enqueue and dequeue methods available + * in the TransactionLog interface implemented by the store, and verifying the + * behaviour using BDB implementation methods. + */ + public void testTranCommit() throws Exception + { + MessageStore log = getVirtualHost().getMessageStore(); + + AbstractBDBMessageStore bdbStore = assertBDBStore(log); + + final UUID mockQueueId = UUIDGenerator.generateRandomUUID(); + TransactionLogResource mockQueue = new TransactionLogResource() + { + @Override + public UUID getId() + { + return mockQueueId; + } + }; + + Transaction txn = log.newTransaction(); + + txn.enqueueMessage(mockQueue, new MockMessage(1L)); + txn.enqueueMessage(mockQueue, new MockMessage(5L)); + txn.commitTran(); + + List<Long> enqueuedIds = bdbStore.getEnqueuedMessages(mockQueueId); + + assertEquals("Number of enqueued messages is incorrect", 2, enqueuedIds.size()); + Long val = enqueuedIds.get(0); + assertEquals("First Message is incorrect", 1L, val.longValue()); + val = enqueuedIds.get(1); + assertEquals("Second Message is incorrect", 5L, val.longValue()); + } + + + /** + * Tests transaction rollback before a commit has occurred by utilising the + * enqueue and dequeue methods available in the TransactionLog interface + * implemented by the store, and verifying the behaviour using BDB + * implementation methods. + */ + public void testTranRollbackBeforeCommit() throws Exception + { + MessageStore log = getVirtualHost().getMessageStore(); + + AbstractBDBMessageStore bdbStore = assertBDBStore(log); + + final UUID mockQueueId = UUIDGenerator.generateRandomUUID(); + TransactionLogResource mockQueue = new TransactionLogResource() + { + @Override + public UUID getId() + { + return mockQueueId; + } + }; + + Transaction txn = log.newTransaction(); + + txn.enqueueMessage(mockQueue, new MockMessage(21L)); + txn.abortTran(); + + txn = log.newTransaction(); + txn.enqueueMessage(mockQueue, new MockMessage(22L)); + txn.enqueueMessage(mockQueue, new MockMessage(23L)); + txn.commitTran(); + + List<Long> enqueuedIds = bdbStore.getEnqueuedMessages(mockQueueId); + + assertEquals("Number of enqueued messages is incorrect", 2, enqueuedIds.size()); + Long val = enqueuedIds.get(0); + assertEquals("First Message is incorrect", 22L, val.longValue()); + val = enqueuedIds.get(1); + assertEquals("Second Message is incorrect", 23L, val.longValue()); + } + + public void testOnDelete() throws Exception + { + MessageStore log = getVirtualHost().getMessageStore(); + AbstractBDBMessageStore bdbStore = assertBDBStore(log); + String storeLocation = bdbStore.getStoreLocation(); + + File location = new File(storeLocation); + assertTrue("Store does not exist at " + storeLocation, location.exists()); + + bdbStore.close(); + assertTrue("Store does not exist at " + storeLocation, location.exists()); + + bdbStore.onDelete(); + assertFalse("Store exists at " + storeLocation, location.exists()); + } + + /** + * Tests transaction rollback after a commit has occurred by utilising the + * enqueue and dequeue methods available in the TransactionLog interface + * implemented by the store, and verifying the behaviour using BDB + * implementation methods. + */ + public void testTranRollbackAfterCommit() throws Exception + { + MessageStore log = getVirtualHost().getMessageStore(); + + AbstractBDBMessageStore bdbStore = assertBDBStore(log); + + final UUID mockQueueId = UUIDGenerator.generateRandomUUID(); + TransactionLogResource mockQueue = new TransactionLogResource() + { + @Override + public UUID getId() + { + return mockQueueId; + } + }; + + Transaction txn = log.newTransaction(); + + txn.enqueueMessage(mockQueue, new MockMessage(30L)); + txn.commitTran(); + + txn = log.newTransaction(); + txn.enqueueMessage(mockQueue, new MockMessage(31L)); + txn.abortTran(); + + txn = log.newTransaction(); + txn.enqueueMessage(mockQueue, new MockMessage(32L)); + txn.commitTran(); + + List<Long> enqueuedIds = bdbStore.getEnqueuedMessages(mockQueueId); + + assertEquals("Number of enqueued messages is incorrect", 2, enqueuedIds.size()); + Long val = enqueuedIds.get(0); + assertEquals("First Message is incorrect", 30L, val.longValue()); + val = enqueuedIds.get(1); + assertEquals("Second Message is incorrect", 32L, val.longValue()); + } + + @SuppressWarnings("rawtypes") + private static class MockMessage implements ServerMessage, EnqueableMessage + { + private long _messageId; + + public MockMessage(long messageId) + { + _messageId = messageId; + } + + public String getRoutingKey() + { + return null; + } + + public AMQMessageHeader getMessageHeader() + { + return null; + } + + public StoredMessage getStoredMessage() + { + return null; + } + + public boolean isPersistent() + { + return true; + } + + public long getSize() + { + return 0; + } + + public boolean isImmediate() + { + return false; + } + + public long getExpiration() + { + return 0; + } + + public MessageReference newReference() + { + return null; + } + + public long getMessageNumber() + { + return _messageId; + } + + public long getArrivalTime() + { + return 0; + } + + public int getContent(ByteBuffer buf, int offset) + { + return 0; + } + + public ByteBuffer getContent(int offset, int length) + { + return null; + } + } +} |