| /** |
| * 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.hadoop.hdfs.server.namenode; |
| |
| import static org.junit.Assert.*; |
| import static org.hamcrest.CoreMatchers.is; |
| import static org.mockito.Matchers.anyBoolean; |
| import static org.mockito.Mockito.doReturn; |
| import static org.mockito.Mockito.mock; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.RandomAccessFile; |
| import java.net.HttpURLConnection; |
| import java.net.URL; |
| import java.util.EnumMap; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import com.google.protobuf.ByteString; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.permission.FsPermission; |
| import org.apache.hadoop.fs.permission.PermissionStatus; |
| import org.apache.hadoop.hdfs.server.common.HdfsServerConstants; |
| import org.apache.hadoop.hdfs.util.Holder; |
| import org.apache.hadoop.hdfs.web.URLConnectionFactory; |
| import org.apache.hadoop.test.GenericTestUtils; |
| import org.apache.hadoop.test.PathUtils; |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.mockito.Mockito; |
| |
| public class TestEditLogFileInputStream { |
| private static final Log LOG = |
| LogFactory.getLog(TestEditLogFileInputStream.class); |
| private static final byte[] FAKE_LOG_DATA = TestEditLog.HADOOP20_SOME_EDITS; |
| |
| private final static File TEST_DIR = PathUtils |
| .getTestDir(TestEditLogFileInputStream.class); |
| |
| @Test |
| public void testReadURL() throws Exception { |
| HttpURLConnection conn = mock(HttpURLConnection.class); |
| doReturn(new ByteArrayInputStream(FAKE_LOG_DATA)).when(conn).getInputStream(); |
| doReturn(HttpURLConnection.HTTP_OK).when(conn).getResponseCode(); |
| doReturn(Integer.toString(FAKE_LOG_DATA.length)).when(conn).getHeaderField("Content-Length"); |
| |
| URLConnectionFactory factory = mock(URLConnectionFactory.class); |
| doReturn(conn).when(factory).openConnection(Mockito.<URL> any(), |
| anyBoolean()); |
| |
| URL url = new URL("http://localhost/fakeLog"); |
| EditLogInputStream elis = EditLogFileInputStream.fromUrl(factory, url, |
| HdfsServerConstants.INVALID_TXID, HdfsServerConstants.INVALID_TXID, false); |
| // Read the edit log and verify that we got all of the data. |
| EnumMap<FSEditLogOpCodes, Holder<Integer>> counts = FSImageTestUtil |
| .countEditLogOpTypes(elis); |
| assertThat(counts.get(FSEditLogOpCodes.OP_ADD).held, is(1)); |
| assertThat(counts.get(FSEditLogOpCodes.OP_SET_GENSTAMP_V1).held, is(1)); |
| assertThat(counts.get(FSEditLogOpCodes.OP_CLOSE).held, is(1)); |
| |
| // Check that length header was picked up. |
| assertEquals(FAKE_LOG_DATA.length, elis.length()); |
| elis.close(); |
| } |
| |
| @Test |
| public void testByteStringLog() throws Exception { |
| ByteString bytes = ByteString.copyFrom(FAKE_LOG_DATA); |
| EditLogInputStream elis = EditLogFileInputStream.fromByteString(bytes, |
| HdfsServerConstants.INVALID_TXID, HdfsServerConstants.INVALID_TXID, |
| true); |
| // Read the edit log and verify that all of the data is present |
| EnumMap<FSEditLogOpCodes, Holder<Integer>> counts = FSImageTestUtil |
| .countEditLogOpTypes(elis); |
| assertThat(counts.get(FSEditLogOpCodes.OP_ADD).held, is(1)); |
| assertThat(counts.get(FSEditLogOpCodes.OP_SET_GENSTAMP_V1).held, is(1)); |
| assertThat(counts.get(FSEditLogOpCodes.OP_CLOSE).held, is(1)); |
| |
| assertEquals(FAKE_LOG_DATA.length, elis.length()); |
| elis.close(); |
| } |
| |
| /** |
| * Regression test for HDFS-8965 which verifies that |
| * FSEditLogFileInputStream#scanOp verifies Op checksums. |
| */ |
| @Test(timeout=60000) |
| public void testScanCorruptEditLog() throws Exception { |
| Configuration conf = new Configuration(); |
| File editLog = new File(GenericTestUtils.getTempPath("testCorruptEditLog")); |
| |
| LOG.debug("Creating test edit log file: " + editLog); |
| EditLogFileOutputStream elos = new EditLogFileOutputStream(conf, |
| editLog.getAbsoluteFile(), 8192); |
| elos.create(NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION); |
| FSEditLogOp.OpInstanceCache cache = new FSEditLogOp.OpInstanceCache(); |
| FSEditLogOp.MkdirOp mkdirOp = FSEditLogOp.MkdirOp.getInstance(cache); |
| mkdirOp.reset(); |
| mkdirOp.setRpcCallId(123); |
| mkdirOp.setTransactionId(1); |
| mkdirOp.setInodeId(789L); |
| mkdirOp.setPath("/mydir"); |
| PermissionStatus perms = PermissionStatus.createImmutable( |
| "myuser", "mygroup", FsPermission.createImmutable((short)0777)); |
| mkdirOp.setPermissionStatus(perms); |
| elos.write(mkdirOp); |
| mkdirOp.reset(); |
| mkdirOp.setRpcCallId(456); |
| mkdirOp.setTransactionId(2); |
| mkdirOp.setInodeId(123L); |
| mkdirOp.setPath("/mydir2"); |
| perms = PermissionStatus.createImmutable( |
| "myuser", "mygroup", FsPermission.createImmutable((short)0666)); |
| mkdirOp.setPermissionStatus(perms); |
| elos.write(mkdirOp); |
| elos.setReadyToFlush(); |
| elos.flushAndSync(false); |
| elos.close(); |
| long fileLen = editLog.length(); |
| |
| LOG.debug("Corrupting last 4 bytes of edit log file " + editLog + |
| ", whose length is " + fileLen); |
| RandomAccessFile rwf = new RandomAccessFile(editLog, "rw"); |
| rwf.seek(fileLen - 4); |
| int b = rwf.readInt(); |
| rwf.seek(fileLen - 4); |
| rwf.writeInt(b + 1); |
| rwf.close(); |
| |
| EditLogFileInputStream elis = new EditLogFileInputStream(editLog); |
| Assert.assertEquals(NameNodeLayoutVersion.CURRENT_LAYOUT_VERSION, |
| elis.getVersion(true)); |
| Assert.assertEquals(1, elis.scanNextOp()); |
| LOG.debug("Read transaction 1 from " + editLog); |
| try { |
| elis.scanNextOp(); |
| Assert.fail("Expected scanNextOp to fail when op checksum was corrupt."); |
| } catch (IOException e) { |
| LOG.debug("Caught expected checksum error when reading corrupt " + |
| "transaction 2", e); |
| GenericTestUtils.assertExceptionContains("Transaction is corrupt.", e); |
| } |
| elis.close(); |
| } |
| } |