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316 lines
12 KiB
Java
316 lines
12 KiB
Java
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
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*
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*/
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package repmgrtests;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNotNull;
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import static org.junit.Assert.assertTrue;
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import java.io.BufferedReader;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.InputStreamReader;
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import java.io.OutputStreamWriter;
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import java.net.Socket;
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import java.util.ArrayList;
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import java.util.List;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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import com.sleepycat.db.BtreeStats;
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import com.sleepycat.db.Database;
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import com.sleepycat.db.DatabaseConfig;
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import com.sleepycat.db.DatabaseEntry;
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import com.sleepycat.db.DatabaseType;
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import com.sleepycat.db.Environment;
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import com.sleepycat.db.EnvironmentConfig;
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import com.sleepycat.db.EventHandlerAdapter;
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import com.sleepycat.db.LogSequenceNumber;
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import com.sleepycat.db.ReplicationConfig;
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import com.sleepycat.db.ReplicationManagerAckPolicy;
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import com.sleepycat.db.ReplicationManagerSiteConfig;
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import com.sleepycat.db.ReplicationManagerSiteInfo;
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import com.sleepycat.db.ReplicationManagerStartPolicy;
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import com.sleepycat.db.ReplicationTimeoutType;
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import com.sleepycat.db.ReplicationTransport;
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import com.sleepycat.db.VerboseConfig;
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/**
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* Basic test of handling full output queue. Use fiddler to simulate
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* a clogged client during internal init. With a completely clogged
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* output queue, make sure we don't block live txn threads, but that
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* we do count a perm failure since we don't get an ack (since of
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* course the client didn't even receive our message.)
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*/
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public class TestDrainCommitx {
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private static final String TEST_DIR_NAME = "TESTDIR";
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private File testdir;
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private byte[] data;
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private Process fiddler;
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private int masterPort;
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private int clientPort;
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private int masterSpoofPort;
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private int mgrPort;
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class MyEventHandler extends EventHandlerAdapter {
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private boolean done = false;
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private boolean panic = false;
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private int permFailCount = 0;
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private int newmasterCount = 0;
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@Override
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synchronized public void handleRepStartupDoneEvent() {
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done = true;
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notifyAll();
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}
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@Override
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synchronized public void handleRepPermFailedEvent() {
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permFailCount++;
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}
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synchronized public int getPermFailCount() { return permFailCount; }
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@Override
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synchronized public void handlePanicEvent() {
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done = true;
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panic = true;
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notifyAll();
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}
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@Override synchronized public void handleRepNewMasterEvent(int eid) {
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newmasterCount++;
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notifyAll();
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}
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synchronized public int getNewmasterCount() {
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return newmasterCount;
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}
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synchronized void awaitNewmasterCountExceeds(int count, long deadline)
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throws Exception
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{
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long now;
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while (newmasterCount <= count) {
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if ((now = System.currentTimeMillis()) >= deadline)
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throw new Exception("aborted by timeout");
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long waitTime = deadline-now;
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wait(waitTime);
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if (panic)
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throw new Exception("aborted by panic in DB");
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}
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}
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synchronized void await() throws Exception {
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while (!done) { wait(); }
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if (panic)
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throw new Exception("aborted by panic in DB");
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}
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}
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@Before
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public void setUp() throws Exception {
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testdir = new File(TEST_DIR_NAME);
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Util.rm_rf(testdir);
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testdir.mkdir();
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String alphabet = "abcdefghijklmnopqrstuvwxyz";
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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OutputStreamWriter w = new OutputStreamWriter(baos);
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for (int i=0; i<100; i++) { w.write(alphabet); }
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w.close();
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data = baos.toByteArray();
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if (Boolean.getBoolean("MANUAL_FIDDLER_START")) {
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masterPort = 6000;
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clientPort = 6001;
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mgrPort = 8000;
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fiddler = null;
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} else {
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String mgrPortNum = System.getenv("DB_TEST_FAKE_PORT");
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assertNotNull("required DB_TEST_FAKE_PORT environment variable not found",
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mgrPortNum);
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mgrPort = Integer.parseInt(mgrPortNum);
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PortsConfig p = new PortsConfig(2);
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masterPort = p.getRealPort(0);
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clientPort = p.getRealPort(1);
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fiddler = Util.startFiddler(p, getClass().getName(), mgrPort);
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}
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}
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@After public void tearDown() throws Exception {
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if (fiddler != null) { fiddler.destroy(); }
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}
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@Test public void testDraining() throws Exception {
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// TODO: move this to a test runner.
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if (Boolean.getBoolean("debug.pause")) {
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// force DB to be loaded first (is this necessary?)
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Environment.getVersionString();
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System.out.println(".> ");
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System.in.read();
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}
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EnvironmentConfig masterConfig = makeBasicConfig();
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masterConfig.setReplicationLimit(100000000);
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ReplicationManagerSiteConfig site
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= new ReplicationManagerSiteConfig("localhost", masterPort);
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site.setLocalSite(true);
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masterConfig.addReplicationManagerSite(site);
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MyEventHandler masterMonitor = new MyEventHandler();
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masterConfig.setEventHandler(masterMonitor);
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File masterDir = mkdir("master");
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Environment master = new Environment(masterDir, masterConfig);
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master.setReplicationTimeout(ReplicationTimeoutType.CONNECTION_RETRY, 3000000);
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master.replicationManagerStart(3, ReplicationManagerStartPolicy.REP_MASTER);
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DatabaseConfig dc = new DatabaseConfig();
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dc.setTransactional(true);
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dc.setAllowCreate(true);
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dc.setType(DatabaseType.BTREE);
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dc.setPageSize(4096);
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Database db = master.openDatabase(null, "test.db", null, dc);
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DatabaseEntry key = new DatabaseEntry();
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DatabaseEntry value = new DatabaseEntry();
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value.setData(data);
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for (int i=0;
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((BtreeStats)db.getStats(null, null)).getPageCount() < 50;
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i++)
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{
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String k = "The record number is: " + i;
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key.setData(k.getBytes());
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db.put(null, key, value);
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}
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db.close();
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// create client, but don't sync yet. Wait a moment so that
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// the connection gets established. Once it is (I should
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// probably have polled repmgr-stats for this, rather than the
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// stupid, slow 2 second assumption), we can send the fiddler
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// command.
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// This is a workaround for what we really wanted to do,
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// which was to use regular immediate sync, telling the
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// fiddler in advance (of having established the connection)
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// what we wanted to do. But fiddler can't handle that at the
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// moment.
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//
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EnvironmentConfig ec = makeBasicConfig();
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site = new ReplicationManagerSiteConfig("localhost", clientPort);
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site.setLocalSite(true);
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ec.addReplicationManagerSite(site);
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site = new ReplicationManagerSiteConfig("localhost", masterPort);
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site.setBootstrapHelper(true);
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ec.addReplicationManagerSite(site);
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MyEventHandler clientMonitor = new MyEventHandler();
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ec.setEventHandler(clientMonitor);
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Environment client = new Environment(mkdir("client"), ec);
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client.setReplicationConfig(ReplicationConfig.DELAYCLIENT, true);
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client.setReplicationTimeout(ReplicationTimeoutType.CONNECTION_RETRY, 3000000);
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client.replicationManagerStart(1, ReplicationManagerStartPolicy.REP_CLIENT);
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for (long deadline = System.currentTimeMillis() + 20000;;Thread.sleep(100)) {
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if (System.currentTimeMillis() > deadline)
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throw new Exception("what's taking so long to connect?");
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ReplicationManagerSiteInfo[] connections = master.getReplicationManagerSiteList();
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if (connections.length == 1 && connections[0].isConnected()) {
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assertEquals("localhost", connections[0].addr.host);
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assertEquals(clientPort, connections[0].addr.port);
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break;
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}
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}
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// tell fiddler to stop reading once it sees a PAGE message
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//
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Socket s = new Socket("localhost", mgrPort);
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OutputStreamWriter w = new OutputStreamWriter(s.getOutputStream());
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String path1 = "{" + masterPort + "," + clientPort + "}"; // looks like {6000,6001}
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w.write("{" + path1 + ",page_clog}\r\n");
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w.flush();
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BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
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assertEquals("ok", br.readLine());
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clientMonitor.awaitNewmasterCountExceeds(0, System.currentTimeMillis() + 2000);
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client.syncReplication();
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// wait til it gets stuck
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Thread.sleep(5000); // FIXME
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// do another new live transaction at the master, make sure
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// that can work. Instead of writing into an existing
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// database, create a new one. That avoid a potential
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// conflict with internal init when we close it (#15820).
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//
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int initialCount = masterMonitor.getPermFailCount();
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long start = System.currentTimeMillis();
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db = master.openDatabase(null, "dummy.db", null, dc);
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long duration = System.currentTimeMillis() - start;
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assertEquals(initialCount+1, masterMonitor.getPermFailCount());
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// In this case, the master should be able to realize that
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// there's no hope of an ack, so it shouldn't wait for the
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// timeout. But currently it does (bug #15827), so skip this
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// part of the test.
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//
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// assertTrue("duration: " + duration, duration < 1000);
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db.close(false);
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// TODO: check timing too.
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// Hey, this is good. I get for free a test of releasing the
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// thread on db_rep->finished; right? Make sure it doesn't
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// take too long (is this too undependable?).
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//
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start = System.currentTimeMillis();
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master.close();
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duration = System.currentTimeMillis() - start;
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assertTrue("duration: " + duration, duration < 1000);
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// At this point, the client is wedged, stuck in internal
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// init. It might be nice to clean it up, but doing so is a
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// bit difficult, and since we're really done with this test
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// anyway it's not crucial.
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w.write("shutdown\r\n");
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w.flush();
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assertEquals("ok", br.readLine());
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s.close();
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fiddler = null;
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}
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public static EnvironmentConfig makeBasicConfig() {
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EnvironmentConfig ec = new EnvironmentConfig();
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ec.setAllowCreate(true);
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ec.setInitializeCache(true);
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ec.setInitializeLocking(true);
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ec.setInitializeLogging(true);
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ec.setInitializeReplication(true);
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ec.setTransactional(true);
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ec.setThreaded(true);
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ec.setReplicationManagerAckPolicy(ReplicationManagerAckPolicy.ONE);
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if (Boolean.getBoolean("VERB_REPLICATION"))
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ec.setVerbose(VerboseConfig.REPLICATION, true);
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return (ec);
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}
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public File mkdir(String dname) {
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File f = new File(testdir, dname);
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f.mkdir();
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return f;
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}
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}
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