BDB 4.1.24

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1 files changed, 289 insertions, 0 deletions

diff --git a/bdb/test/scr016/TestReplication.java b/bdb/test/scr016/TestReplication.java
new file mode 100644
index 00000000000..87cb683d60f
--- /dev/null
+++ b/bdb/test/scr016/TestReplication.java
@@ -0,0 +1,289 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2002
+ *	Sleepycat Software.  All rights reserved.
+ *
+ * $Id: TestReplication.java,v 1.3 2002/01/23 14:29:51 bostic Exp $
+ */
+
+/*
+ * Simple test of replication, merely to exercise the individual
+ * methods in the API.  Rather than use TCP/IP, our transport
+ * mechanism is just an ArrayList of byte arrays.
+ * It's managed like a queue, and synchronization is via
+ * the ArrayList object itself and java's wait/notify.
+ * It's not terribly extensible, but it's fine for a small test.
+ */
+
+package com.sleepycat.test;
+
+import com.sleepycat.db.*;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.util.Vector;
+
+public class TestReplication extends Thread
+    implements DbRepTransport
+{
+    public static final String MASTER_ENVDIR = "./master";
+    public static final String CLIENT_ENVDIR = "./client";
+
+    private Vector queue = new Vector();
+    private DbEnv master_env;
+    private DbEnv client_env;
+
+    private static void mkdir(String name)
+        throws IOException
+    {
+        (new File(name)).mkdir();
+    }
+    
+
+    // The client thread runs this
+    public void run()
+    {
+        try {
+            System.err.println("c10");
+            client_env = new DbEnv(0);
+            System.err.println("c11");
+            client_env.set_rep_transport(1, this);
+            System.err.println("c12");
+            client_env.open(CLIENT_ENVDIR, Db.DB_CREATE | Db.DB_INIT_MPOOL, 0);
+            System.err.println("c13");
+            Dbt myid = new Dbt("master01".getBytes());
+            System.err.println("c14");
+            client_env.rep_start(myid, Db.DB_REP_CLIENT);
+            System.err.println("c15");
+            DbEnv.RepProcessMessage processMsg = new DbEnv.RepProcessMessage();
+            processMsg.envid = 2;
+            System.err.println("c20");
+            boolean running = true;
+
+            Dbt control = new Dbt();
+            Dbt rec = new Dbt();
+
+            while (running) {
+                int msgtype = 0;
+                
+                System.err.println("c30");
+                synchronized (queue) {
+                    if (queue.size() == 0) {
+                        System.err.println("c40");
+                        sleepShort();
+                    }
+                    else {
+                        msgtype = ((Integer)queue.firstElement()).intValue();
+                        queue.removeElementAt(0);
+                        byte[] data;
+
+                        System.err.println("c50 " + msgtype);
+                        
+                        switch (msgtype) {
+                            case -1:
+                                running = false;
+                                break;
+                            case 1:
+                                data = (byte[])queue.firstElement();
+                                queue.removeElementAt(0);
+                                control.set_data(data);
+                                control.set_size(data.length);
+                                break;
+                            case 2:
+                                control.set_data(null);
+                                control.set_size(0);
+                                break;
+                            case 3:
+                                data = (byte[])queue.firstElement();
+                                queue.removeElementAt(0);
+                                rec.set_data(data);
+                                rec.set_size(data.length);
+                                break;
+                            case 4:
+                                rec.set_data(null);
+                                rec.set_size(0);
+                                break;
+                        }
+                        
+                    }
+                }
+                System.err.println("c60");
+                if (msgtype == 3 || msgtype == 4) {
+                    System.out.println("cLIENT: Got message");
+                    client_env.rep_process_message(control, rec,
+                                                   processMsg);
+                }
+            }
+            System.err.println("c70");
+            Db db = new Db(client_env, 0);
+            db.open(null, "x.db", null, Db.DB_BTREE, 0, 0);
+            Dbt data = new Dbt();
+            System.err.println("c80");
+            db.get(null, new Dbt("Hello".getBytes()), data, 0);
+            System.err.println("c90");
+            System.out.println("Hello " + new String(data.get_data(), data.get_offset(), data.get_size()));
+            System.err.println("c95");
+            client_env.close(0);
+        }
+        catch (Exception e) {
+            System.err.println("client exception: " + e);
+        }
+    }
+
+    // Implements DbTransport
+    public int send(DbEnv env, Dbt control, Dbt rec, int flags, int envid)
+        throws DbException
+    {
+        System.out.println("Send to " + envid);
+        if (envid == 1) {
+            System.err.println("Unexpected envid = " + envid);
+            return 0;
+        }
+        
+        int nbytes = 0;
+        
+        synchronized (queue) {
+            System.out.println("Sending message");
+            byte[] data = control.get_data();
+            if (data != null && data.length > 0) {
+                queue.addElement(new Integer(1));
+                nbytes += data.length;
+                byte[] newdata = new byte[data.length];
+                System.arraycopy(data, 0, newdata, 0, data.length);
+                queue.addElement(newdata);
+            }
+            else 
+            {
+                queue.addElement(new Integer(2));
+            }
+            
+            data = rec.get_data();
+            if (data != null && data.length > 0) {
+                queue.addElement(new Integer(3));
+                nbytes += data.length;
+                byte[] newdata = new byte[data.length];
+                System.arraycopy(data, 0, newdata, 0, data.length);
+                queue.addElement(newdata);
+            }
+            else 
+            {
+                queue.addElement(new Integer(4));
+            }
+            System.out.println("MASTER: sent message");
+        }
+        return 0;
+    }
+
+    public void sleepShort()
+    {
+        try {
+            sleep(100);
+        }
+        catch (InterruptedException ie)
+        {
+        }
+    }
+    
+    public void send_terminator()
+    {
+        synchronized (queue) {
+            queue.addElement(new Integer(-1));
+        }
+    }
+    
+    public void master()
+    {
+        try {
+            master_env = new DbEnv(0);
+            master_env.set_rep_transport(2, this);
+            master_env.open(MASTER_ENVDIR, Db.DB_CREATE | Db.DB_INIT_MPOOL, 0644);
+            System.err.println("10");
+            Dbt myid = new Dbt("client01".getBytes());
+            master_env.rep_start(myid, Db.DB_REP_MASTER);
+            System.err.println("10");
+            Db db = new Db(master_env, 0);
+            System.err.println("20");
+            db.open(null, "x.db", null, Db.DB_BTREE, Db.DB_CREATE, 0644);
+            System.err.println("30");
+            db.put(null, new Dbt("Hello".getBytes()),
+                   new Dbt("world".getBytes()), 0);
+            System.err.println("40");
+            //DbEnv.RepElectResult electionResult = new DbEnv.RepElectResult();
+            //master_env.rep_elect(2, 2, 3, 4, electionResult);
+            db.close(0);
+            System.err.println("50");
+            master_env.close(0);
+            send_terminator();
+        }
+        catch (Exception e) {
+            System.err.println("client exception: " + e);
+        }
+    }
+
+    public static void main(String[] args)
+    {
+        // The test should only take a few milliseconds.
+        // give it 10 seconds before bailing out.
+        TimelimitThread t = new TimelimitThread(1000*10);
+        t.start();
+
+        try {
+            mkdir(CLIENT_ENVDIR);
+            mkdir(MASTER_ENVDIR);
+
+            TestReplication rep = new TestReplication();
+
+            // Run the client as a seperate thread.
+            rep.start();
+
+            // Run the master.
+            rep.master();
+
+            // Wait for the master to finish.
+            rep.join();
+        }
+        catch (Exception e)
+        {
+            System.err.println("Exception: " + e);
+        }
+        t.finished();
+    }
+
+}
+
+class TimelimitThread extends Thread
+{
+    long nmillis;
+    boolean finished = false;
+    
+    TimelimitThread(long nmillis)
+    {
+        this.nmillis = nmillis;
+    }
+
+    public void finished()
+    {
+        finished = true;
+    }
+    
+    public void run()
+    {
+        long targetTime = System.currentTimeMillis() + nmillis;
+        long curTime;
+        
+        while (!finished &&
+               ((curTime = System.currentTimeMillis()) < targetTime)) {
+            long diff = targetTime - curTime;
+            if (diff > 100)
+                diff = 100;
+            try {
+                sleep(diff);
+            }
+            catch (InterruptedException ie) {
+            }
+        }
+        System.err.println("");
+        System.exit(1);
+    }
+}