public void T00_ResumeEmpty()
{
T00_LogInit();
IRegionManager rmgr = new RegionExposedFiles(InitMode.NEW_REGION, "c:\\BENDtst\\1");
TestReceiver receiver = new TestReceiver();
LogWriter lr = LogWriter.LogWriter_Resume(rmgr, receiver);
Assert.AreEqual(receiver.cmds.Count, 0, "there should be no log records");
}
public void T02_Region_References()
{
RegionExposedFiles rm = new RegionExposedFiles(InitMode.NEW_REGION,
"C:\\BENDtst\\T01_Region_References");
byte[] data = { 1, 3, 4, 5, 6, 7, 8, 9, 10 };
bool delegate_called = false;
{
// put some data in the region
IRegion region1 = rm.writeFreshRegionAddr(0, BLOCK_SIZE);
{
Stream output = region1.getNewAccessStream();
output.Write(data, 0, data.Length);
output.Dispose();
}
region1 = null;
}
System.GC.Collect();
{
IRegion region2 = rm.readRegionAddrNonExcl(0);
Stream rd1 = region2.getNewAccessStream();
rm.notifyRegionSafeToFree(0, delegate(long addr) {
System.Console.WriteLine("** region safe to free delegate called");
delegate_called = true;
});
rd1 = null;
region2 = null;
}
rm = null;
for (int x = 0; x < 1000; x++) {
Thread.Sleep(5);
System.GC.Collect();
if (delegate_called) { break; }
}
Assert.AreEqual(true, delegate_called, "region was never safe to free");
}
public void T00_LogInit()
{
int system_reserved_space;
IRegionManager rmgr = new RegionExposedFiles(InitMode.NEW_REGION, "c:\\BENDtst\\1"); // TODO, create random directory
{
LogWriter lr = LogWriter.LogWriter_NewRegion(rmgr, null, out system_reserved_space);
lr.Dispose();
}
// open the rootblock stream...
Stream rootblockstream = rmgr.readRegionAddr(0).getNewAccessStream();
// read rootblock header
rootblockstream.Seek(0, SeekOrigin.Begin);
RootBlockHeader rootblockdata = Bend.Util.readStruct<RootBlockHeader>(rootblockstream);
// check rootblock data
{
Assert.AreEqual(rootblockdata.magic, RootBlockHeader.ROOTMAGIC, "root block magic");
Assert.AreEqual(rootblockdata.num_logsegments, LogWriter.DEFAULT_LOG_SEGMENTS);
// TODO: check checksum
}
// read / check each log segment
for (int i = 0; i < rootblockdata.num_logsegments; i++) {
RootBlockLogSegment seg = Bend.Util.readStruct<RootBlockLogSegment>(rootblockstream);
Stream logstream = rmgr.readRegionAddr(seg.logsegment_start).getNewAccessStream();
logstream.Seek(0, SeekOrigin.Begin);
// check that each log segment contains a valid closed log record
logstream.Close();
}
rootblockstream.Close();
}
public void T05_Region_Concurrency()
{
RegionExposedFiles rm = new RegionExposedFiles(InitMode.NEW_REGION,
"C:\\BENDtst\\T05_Region_Concurrency");
byte[] data = { 1, 3, 4, 5, 6, 7, 8, 9, 10 };
{
// put some data in the region
IRegion region1 = rm.writeFreshRegionAddr(0, BLOCK_SIZE);
{
Stream output = region1.getNewAccessStream();
output.Write(data, 0, data.Length);
output.Close();
}
}
{
IRegion region1 = rm.readRegionAddrNonExcl(0);
Stream rd1 = region1.getNewAccessStream();
Stream rd2 = region1.getNewAccessStream();
// Assert.AreNotEqual(rd1, rd2, "streams should be separate");
for (int i = 0; i < data.Length; i++) {
Assert.AreEqual(0, rd2.Position, "stream rd2 position should be indpendent");
Assert.AreEqual(i, rd1.Position, "stream rd1 position");
Assert.AreEqual(data[i], rd1.ReadByte(), "stream rd1 data correcness");
}
}
}
public void T01_BigNumbers()
{
// 2147487744
long number = 2147487744;
System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
String number_s = enc.GetString(Lsd.numberToLsd(number, 13));
Assert.AreEqual("0002147487744",number_s);
// 4294971392
number = 4294971392;
var bytes = Lsd.numberToLsd(number, 13);
number_s = enc.GetString(bytes);
Assert.AreEqual("0004294971392", number_s);
Assert.AreEqual(number, Lsd.lsdToNumber(bytes));
// not really a bignumbers test, but this is failing at runtime, why!?!?
var REF = new RegionExposedFiles(@"c:\foo");
var filepath = REF.makeFilepath(number);
Assert.AreEqual(@"c:\foo\addr0004294971392.rgm", filepath);
}
public void T00_ResumeWithRecords()
{
IRegionManager rmgr = new RegionExposedFiles(InitMode.NEW_REGION, "c:\\BENDtst\\2");
byte[] cmddata = { 0x81, 0x82, 0x83 };
const int NUM_COMMANDS = 3;
// make a new empty log
{
int system_reserved_space;
LogWriter lr = LogWriter.LogWriter_NewRegion(rmgr, new DummyLogReceiver(), out system_reserved_space);
lr.log_handler.setDebugLogSegments();
Assert.AreEqual(1, lr.log_handler.activeLogSegments, "one active log segment");
// add NUM_COMMANDS records to the log
long logWaitNumber;
for (int i=0;i<NUM_COMMANDS;i++) {
lr.addCommand(LogCommands.UPDATE, cmddata, out logWaitNumber);
lr.flushPendingCommands();
printLogStatus(lr, String.Format("addCommand iteration {0}", i));
}
lr.Dispose();
}
// reinit and resume from the log
{
TestReceiver receiver = new TestReceiver();
LogWriter lr = LogWriter.LogWriter_Resume(rmgr, receiver);
Assert.AreEqual(NUM_COMMANDS, lr.log_handler.activeLogSegments, "should be NUM_COMMANDS log segments");
Assert.AreEqual(NUM_COMMANDS, receiver.cmds.Count, "number of log records incorrect");
Assert.AreEqual(LogCommands.UPDATE, receiver.cmds[0].cmd, "cmdbyte should match");
Assert.AreEqual(cmddata, receiver.cmds[0].cmddata, "cmddata should match");
lr.Dispose();
}
// assert the log had the records
}
public void T02_LogCheckpointResumeOrder()
{
IRegionManager rmgr = new RegionExposedFiles(InitMode.NEW_REGION, "c:\\BENDtst\\2");
byte[] cmddata = { 0x00 };
int timestamp = 5;
long logWaitNumber;
{
// make a new empty log
TestReceiver receiver = new TestReceiver();
int system_reserved_space;
LogWriter lr = LogWriter.LogWriter_NewRegion(rmgr, receiver, out system_reserved_space);
lr.log_handler.setDebugLogSegments(); // force one command per log segment
// find out how many empty segments there are...
// (1) add commands to fill up the log segments..
{
int emptySegments = lr.log_handler.emptyLogSegments;
for (int i = 0; i < emptySegments; i++) {
cmddata[0] = (byte)timestamp;
timestamp++;
lr.addCommand(LogCommands.UPDATE, cmddata, out logWaitNumber);
lr.flushPendingCommandsThrough(logWaitNumber);
printLogStatus(lr, String.Format("filling empty segments {0}", i));
}
Assert.AreEqual(1, lr.log_handler.emptyLogSegments, "should be no empty log segments 1");
printLogStatus(lr, "log almost full");
}
// (2) checkpoint the log
{
lr.checkpointStart();
lr.checkpointDrop(out logWaitNumber);
lr.flushPendingCommandsThrough(logWaitNumber);
Assert.LessOrEqual(1, lr.log_handler.activeLogSegments, "should have only <= 2 active log segments");
printLogStatus(lr, "log checkpoint complete");
}
// (3) add commands to fill newly free log segments
{
int emptySegments = lr.log_handler.emptyLogSegments;
for (int i = 0; i < emptySegments; i++) {
cmddata[0] = (byte)timestamp;
timestamp++;
lr.addCommand(LogCommands.UPDATE, cmddata, out logWaitNumber);
lr.flushPendingCommandsThrough(logWaitNumber);
printLogStatus(lr, String.Format("filling empty segments {0}", i));
}
Assert.LessOrEqual(lr.log_handler.emptyLogSegments, 1, "should be no empty log segments 2");
printLogStatus(lr, "log almost full 2");
}
// (4) shutdown
lr.Dispose();
}
// (5) now resume, make sure we resume in order
{
TestReceiver receiver = new TestReceiver();
LogWriter lr = LogWriter.LogWriter_Resume(rmgr, receiver);
int cur = 0;
foreach (var cmd in receiver.cmds) {
if (cmd.cmd == LogCommands.UPDATE) {
Console.WriteLine("Resume Record : {0} {1}", cmd.cmd.ToString(), cmd.cmddata[0]);
Assert.Greater(cmd.cmddata[0], cur, "order should be increasing");
cur = cmd.cmddata[0];
} else {
Console.WriteLine("empty command : {0}", cmd.cmd.ToString());
}
}
}
}
public void T01_OverflowLog()
{
IRegionManager rmgr = new RegionExposedFiles(InitMode.NEW_REGION, "c:\\BENDtst\\2");
byte[] cmddata = { 0x00 };
{
// make a new empty log
TestReceiver receiver = new TestReceiver();
int system_reserved_space;
LogWriter lr = LogWriter.LogWriter_NewRegion(rmgr, receiver, out system_reserved_space);
lr.log_handler.setDebugLogSegments(); // force one command per log segment
// find out how many empty segments there are...
int emptySegments = lr.log_handler.emptyLogSegments;
// add a command to fill up the log segments..
long logWaitNumber = 0;
for (int i = 0; i <= emptySegments; i++) {
lr.addCommand(LogCommands.UPDATE, cmddata, out logWaitNumber);
lr.flushPendingCommands();
}
Assert.AreEqual(0, lr.log_handler.emptyLogSegments, "should be no empty log segments");
// now add another command.. which should overflow the log segments and send us the log-extend request
// make sure a write attempt blocks (or fails)
// make sure a log-extend still succeeds.
Assert.Fail("INTENTIONAL FAIL - test not fully implemented");
lr.Dispose();
}
}
public void T01_LogCheckpoint()
{
IRegionManager rmgr = new RegionExposedFiles(InitMode.NEW_REGION, "c:\\BENDtst\\2");
byte[] cmddata = { 0x81, 0x82, 0x83 };
long logWaitNumber;
{
// make a new empty log
TestReceiver receiver = new TestReceiver();
int system_reserved_space;
LogWriter lr = LogWriter.LogWriter_NewRegion(rmgr, receiver, out system_reserved_space);
lr.log_handler.setDebugLogSegments(); // force one command per log segment
// find out how many empty segments there are...
int emptySegments = lr.log_handler.emptyLogSegments;
// add a command to fill up the log segments..
for (int i = 0; i < emptySegments; i++) {
lr.addCommand(LogCommands.UPDATE, cmddata, out logWaitNumber);
lr.flushPendingCommandsThrough(logWaitNumber);
printLogStatus(lr, String.Format("filling empty segments {0}",i));
}
Assert.AreEqual(1, lr.log_handler.emptyLogSegments, "should be no empty log segments");
printLogStatus(lr, "log almost full");
// now checkpoint the log
lr.checkpointStart();
lr.checkpointDrop(out logWaitNumber);
lr.flushPendingCommandsThrough(logWaitNumber);
Assert.LessOrEqual(2, lr.log_handler.activeLogSegments, "should have only <= 2 active log segments");
printLogStatus(lr, "log checkpoint complete");
lr.Dispose();
}
}