static void document_db_test()
{
Console.WriteLine("======================= Document DB Test ==============================");
LayerManager raw_db = new LayerManager(InitMode.NEW_REGION, "c:\\BENDtst\\main");
StepsDatabase db_broker = new StepsDatabase(raw_db);
IStepsDocumentDB doc_db = db_broker.getDocumentDatabase();
doc_db.ensureIndex( new string[] { "name" } );
doc_db.ensureIndex(new string[] { "age"});
doc_db.Insert(new BsonDocument {
{ "_id" , "user1" },
{ "name" , "David" },
{ "age", 60 }
});
doc_db.Insert(new BsonDocument {
{ "_id" , "user2" },
{ "name" , "Tom" },
{ "age", 32 }
});
doc_db.Insert(new BsonDocument {
{ "_id" , "user3" },
{ "name" , "Tom" },
{ "age", 32 }
});
raw_db.debugDump();
int count=0;
foreach (var doc in doc_db.Find(new BsonDocument() )) {
Console.WriteLine(" [{0}] = {1}", count++, doc.ToJson());
}
var change_spec = new BsonDocument{
{ "$inc" , new BsonDocument { { "age", 1 } } }
};
Console.WriteLine("change spec = " + change_spec.ToJson());
doc_db.Update(new BsonDocument(), change_spec);
raw_db.debugDump();
foreach (var doc in doc_db.Find(new BsonDocument () )) {
Console.WriteLine(" [{0}] = {1}", count++, doc.ToJson());
}
}
public static void waitUntilState(LayerManager db, ReplHandler srvr, ReplState state)
{
for (int x = 0; x < 20; x++) {
if (srvr.State == state) {
break;
}
Console.WriteLine("waiting for ({0}) to become {1}.. (currently: {2})",
srvr.ToString(),state, srvr.State);
Thread.Sleep(1000);
}
if (srvr.State != state) {
db.debugDump();
Console.WriteLine("server({0}) failed to become {1}, aborting test",
srvr.ToString(), state);
Environment.Exit(1);
}
Console.WriteLine("Server ({0}) is now {1}!", srvr, state);
}
public void T000_TestBasic_SnapshotTombstones()
{
var raw_db = new LayerManager(InitMode.NEW_REGION, "c:\\BENDtst\\snapts");
var snap_db = new StepsStageSnapshot(
new StepsStageSubset(
new RecordKeyType_String("snapdb"),
raw_db));
snap_db.setValue(new RecordKey().appendParsedKey("b/1"), RecordUpdate.DeletionTombstone());
snap_db.setValue(new RecordKey().appendParsedKey("a/1"), RecordUpdate.WithPayload("data1"));
var snapshot = snap_db.getSnapshot();
snap_db.setValue(new RecordKey().appendParsedKey("a/1"), RecordUpdate.DeletionTombstone());
raw_db.debugDump();
int count = 0;
foreach (var row in snap_db.scanForward(ScanRange<RecordKey>.All())) {
Console.WriteLine("found record: " + row);
count++;
}
Assert.AreEqual(0, count, "deletion tombstones didn't work in snapshot");
}
public void T04_SingleSegmentRootMetadataLogRecovery()
{
// TEST: test multiple segments flushed, and "log resumed" (walk .ROOT range map)
// perform the previous test
T03_SegmentLayerGetRecordApplicationOrder();
// ... and then perform a resume
LayerManager db = new LayerManager(InitMode.RESUME, "c:\\BENDtst\\6");
String[] keys = { "test-1", "test-2", "test-3" };
String[] values = { "a-second", "b-second", "c-second" };
// verify that it has the same data as before the RESUME
{
// working segment should be empty
for (int i = 0; i < keys.Length; i++) {
RecordKey key = new RecordKey();
key.appendKeyPart(keys[i]);
// look directly in the working segment, they should be MISSING
// This is testing the checkpoint as well. If log resume didn't
// CHECKPOINT_DROP, then the values will be duplicated in the working segment.
{
RecordUpdate update;
GetStatus status =
db.workingSegment.getRecordUpdate(key, out update);
Assert.AreEqual(GetStatus.MISSING, status, "working segment should be MISSING");
}
// assure the global query interface finds the NEW VALUES
{
RecordData data;
GetStatus status = db.getRecord(key, out data);
Assert.AreEqual(GetStatus.PRESENT, status, "LayerManager should see NEW VALUES");
Assert.AreEqual(values[i], data.ReadDataAsString(), "LayerManager.getRecord() should see NEW VALUES");
}
}
// now generate a BUNCH of new segments...
{
String[] secondkeys = { "second-test-1", "second-test-2", "second-test-3" };
String[] secondvalues = { "a-second", "b-second", "c-second" };
// put each new record in its OWN segment
for (int i = 0; i < secondkeys.Length; i++) {
LayerWriteGroup txn = db.newWriteGroup();
txn.setValueParsed(secondkeys[i], secondvalues[i]);
txn.finish();
db.flushWorkingSegment();
}
db.Dispose();
db.debugDump();
// RESUME
db = new LayerManager(InitMode.RESUME, "c:\\BENDtst\\6");
// first test records should still be visible
for (int i = 0; i < keys.Length; i++) {
RecordKey key = new RecordKey();
key.appendKeyPart(keys[i]);
// look directly in the working segment, they should be MISSING
// This is testing the checkpoint as well. If log resume didn't
// CHECKPOINT_DROP, then the values will be duplicated in the working segment.
{
RecordUpdate update;
GetStatus status =
db.workingSegment.getRecordUpdate(key, out update);
Assert.AreEqual(GetStatus.MISSING, status, "working segment should be MISSING {0}", key);
}
// assure the global query interface finds the NEW VALUES
{
RecordData data;
GetStatus status = db.getRecord(key, out data);
Assert.AreEqual(GetStatus.PRESENT, status, "LayerManager should see NEW VALUES : {0}", key);
Assert.AreEqual(values[i], data.ReadDataAsString(), "LayerManager.getRecord() should see NEW VALUES : {0}", key);
}
}
db.debugDump();
// verify that the secondkeys/values are still in there
for (int i = 0; i < secondkeys.Length; i++) {
RecordKey key = new RecordKey();
key.appendKeyPart(secondkeys[i]);
// look directly in the working segment, they should be MISSING
// This is testing the checkpoint as well. If log resume didn't
// CHECKPOINT_DROP, then the values will be duplicated in the working segment.
{
RecordUpdate update;
GetStatus status =
db.workingSegment.getRecordUpdate(key, out update);
Assert.AreEqual(GetStatus.MISSING, status, "working segment should be MISSING");
}
// assure the global query interface finds the NEW VALUES
{
RecordData data;
GetStatus status = db.getRecord(key, out data);
Assert.AreEqual(GetStatus.PRESENT, status, "LayerManager should see NEW VALUES, where is: " + key);
Assert.AreEqual(secondvalues[i], data.ReadDataAsString(), "LayerManager.getRecord() should see NEW VALUES");
}
}
}
db.Dispose();
}
}
public void T02_LayerSegmentFlushAndFreespaceModification()
{
String[] keys = { "test-1", "test-2", "test-3" };
String[] values = { "a", "b", "c" };
System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
LayerManager db = new LayerManager(InitMode.NEW_REGION, "c:\\BENDtst\\5");
db.debugDump();
LayerWriteGroup txn = db.newWriteGroup();
for (int i = 0; i < keys.Length; i++) {
txn.setValueParsed(keys[i], values[i]);
}
txn.finish();
db.flushWorkingSegment();
db.debugDump();
// assure that we checkpointed down to a single working segment
Assert.AreEqual(1, db.segmentlayers.Count, "segment layer count");
// assure we allocated a new generation and gen0 range record (walk .ROOT range map)
// TODO: move this test to RangemapManager, to remove this cross-dependency
{
RecordData data;
RecordKey key = new RecordKey().appendParsedKey(".ROOT/VARS/NUMGENERATIONS");
Assert.AreEqual(GetStatus.PRESENT,db.getRecord(key, out data),"missing numgenerations record");
Assert.AreEqual("1", data.ReadDataAsString(),"generation count 1");
RecordUpdate update;
Assert.AreEqual(GetStatus.PRESENT,
db.workingSegment.getRecordUpdate(key, out update), "missing workingsegment numgenerations record");
Assert.AreEqual("1", enc.GetString(update.data), "generation count 2");
}
#if false
if (false) {
RecordData data;
Assert.AreEqual(
GetStatus.PRESENT,
db.getRecord(new RecordKey()
.appendParsedKey(".ROOT/GEN")
.appendKeyPart(new RecordKeyType_Long(0))
.appendKeyPart("</>"), out data),
".ROOT/GEN/0/</> key is missing");
}
#endif
// TODO: assure we subtracted the new range record from the freespace
// assure the records we wrote are NOT in the working segment, but ARE in the next layer
for (int i = 0; i < keys.Length; i++) {
RecordKey key = new RecordKey();
key.appendKeyPart(keys[i]);
// look directly in the working segment, they should be **MISSING*
{
RecordUpdate update;
GetStatus status =
db.workingSegment.getRecordUpdate(key, out update);
Assert.AreEqual(GetStatus.MISSING, status, "working segment should be clear");
}
// assure the global query interface finds it
{
RecordData data;
GetStatus status = db.getRecord(key, out data);
Assert.AreEqual(GetStatus.PRESENT, status, "records should be found in layers, {0} missing", key);
Assert.AreEqual(values[i], data.ReadDataAsString(), "LayerManager.getRecord()");
}
}
db.Dispose();
}
public void T001_MultiWorkingSegmentReadWrite()
{
LayerManager db = new LayerManager(InitMode.NEW_REGION, "c:\\BENDtst\\3");
var rk = new RecordKey().appendParsedKey(".data/a");
db.setValueParsed(".data/a", "1");
KeyValuePair<RecordKey, RecordData> record;
try {
record = db.FindNext(rk, true);
Assert.AreEqual(rk, record.Key, "fetched key does not match");
} catch (KeyNotFoundException) {
Assert.Fail("couldn't find 'a' record");
}
int found_recs = 0;
var scan_range = new ScanRange<RecordKey>(rk, RecordKey.AfterPrefix(rk), null);
foreach (var row in db.scanForward(scan_range)) {
found_recs++;
}
Assert.AreEqual(1, found_recs, "found the wrong number of records in working segment scan!");
db.DEBUG_addNewWorkingSegmentWithoutFlush();
db.setValueParsed(".data/b", "2");
Console.WriteLine("");
Console.WriteLine("--- contents --");
db.debugDump();
Console.WriteLine("");
// ------------------------------
try {
var rkb = new RecordKey().appendParsedKey(".data/b");
record = db.FindNext(rkb, true);
Assert.AreEqual(rkb, record.Key, "fetched key does not match (after flush)");
} catch (KeyNotFoundException) {
Assert.Fail("couldn't find 'b' record");
}
found_recs = 0;
var rk_prefix = new RecordKey().appendParsedKey(".data");
foreach (var row in db.scanForward(
new ScanRange<RecordKey>(rk_prefix, RecordKey.AfterPrefix(rk_prefix), null))) {
found_recs++;
}
Assert.AreEqual(2, found_recs, "found the wrong number of records after working segment addition !");
}
public static void do_bringup_test(DbgGUI win)
{
LayerManager db = new LayerManager(InitMode.NEW_REGION,"c:\\BENDtst\\main");
db.setValueParsed("test/3","a");
db.setValueParsed("test/2","b");
db.setValueParsed("test/1","c");
db.debugDump();
db.flushWorkingSegment(); // this will flush and read the current segment
Console.WriteLine("--- after flush");
db.debugDump();
dumpMergeCandidates(db);
Console.WriteLine("--- check record read");
RecordData data;
GetStatus status = db.getRecord(new RecordKey().appendParsedKey("test/3"), out data);
System.Console.WriteLine("getRecord({0}) returned {1}", "test/3", data.ToString());
Console.WriteLine("--- make lots of segments");
db.setValueParsed("test/4", "d");
db.flushWorkingSegment();
db.setValueParsed("test/5", "e");
db.flushWorkingSegment();
db.setValueParsed("test/6", "f");
db.flushWorkingSegment();
db.debugDump();
System.Console.WriteLine("-------- dump keys ---------------------");
dumpAllDbRecords(db);
dumpMergeCandidates(db);
System.Console.WriteLine("-------- draw graphical debug ---------------------");
win.debugDump(db);
System.Console.WriteLine("-------- PERFORMING A SINGLE MERGE ---------------------");
MergeCandidate mc;
mc = db.rangemapmgr.mergeManager.getBestCandidate();
System.Console.WriteLine("MERGE :" + mc);
db.performMerge(mc);
dumpMergeCandidates(db);
db.flushWorkingSegment();
db.debugDump();
dumpSegmentList(db);
win.debugDump(db);
System.Console.WriteLine("-------- SINGLE MERGE DONE, close/dispose ---------------------");
dumpSegmentList(db);
dumpMergeCandidates(db);
db.debugDump();
db.Dispose();
System.Console.WriteLine("-------- NOW RESUME ---------------------------------");
db = new LayerManager(InitMode.RESUME, "c:\\BENDtst\\main");
dumpSegmentList(db);
dumpMergeCandidates(db);
win.debugDump(db);
db.debugDump();
System.Console.WriteLine("-------- NOW FINDNEXT ---------------------------------");
dumpAllDbRecords(db);
win.debugDump(db);
System.Console.WriteLine("-------- NOW MERGE ALL SEGMENTS ---------------------------------");
dumpSegmentList(db);
db.mergeAllSegments();
db.debugDump();
win.debugDump(db);
// stop(); // ------------------------- (( S T O P )) ---------------------------------
System.Console.WriteLine("-------- NOW FINDNEXT (after merge) ---------------------------------");
dumpAllDbRecords(db);
//System.Console.WriteLine("-------- Now run Readthreads Test ---------------------------------");
//A03_LayerManagerTests test = new A03_LayerManagerTests();
//test.T10_LayerManager_ReadThreads();
dumpMergeCandidates(db);
win.debugDump(db);
db.Dispose();
System.Console.WriteLine("-------- Write ALOT of data ---------------------------------");
int keysize = 20
;
int keycount = 1000000;
int flush_period = 40000;
int commit_period = 1000;
bool random_order = true;
double elapsed;
DateTime start = DateTime.Now;
int record_count = 0;
db = new LayerManager(InitMode.NEW_REGION, "c:\\BENDtst\\bigtest");
String value = "";
String keybase = "TestValueDataABC";
for (int x = 0; x < keysize / keybase.Length; x++) { value = value + keybase; }
int seed = (int)DateTime.Now.Ticks;
Random rnd = new Random(seed);
System.Console.WriteLine("*** RANDOM SEED: " + seed);
var write_group = db.newWriteGroup();
for (int x = 10000001; x < 10000001 + keycount; x++) {
if (random_order) {
write_group.setValueParsed("test/rnd/" + rnd.Next(), value);
} else {
write_group.setValueParsed("test/ordered/" + x, value);
}
record_count++;
if (x % commit_period == 0) { write_group.finish(); write_group = db.newWriteGroup(); }
if (x % flush_period == 0) {
System.Console.WriteLine("*** RANDOM SEED: " + seed);
write_group.finish(); write_group = db.newWriteGroup();
System.Console.WriteLine("start % 1000 cycle..");
db.flushWorkingSegment();
db.freespacemgr.debugDumbCurrentFreespace();
win.debugDump(db);
dumpMergeCandidates(db);
for (int mx = 0; mx < 30; mx++) {
mc = db.rangemapmgr.mergeManager.getBestCandidate();
if (mc == null) { break; }
if (mc.score() > (1.6 + (float)db.rangemapmgr.mergeManager.getMaxGeneration()/12.0f)) {
System.Console.WriteLine("** best merge score too high: " + mc);
break;
}
System.Console.WriteLine("merge " + mx + " : " + mc);
win.debugDump(db, mc);
db.performMerge(mc);
System.Console.WriteLine("mergedone " + mx + " : " + mc);
dumpSegmentList(db);
dumpMergeCandidates(db);
win.debugDump(db);
}
elapsed = (DateTime.Now - start).TotalMilliseconds / 1000.0;
System.GC.Collect();
Console.WriteLine("*************************************************");
Console.WriteLine("*************************************************");
Console.WriteLine("*** merge cycle done {0} records so far, in {1} total time, {2} records/second",
record_count,elapsed, (double)record_count/elapsed);
Console.WriteLine("*************************************************");
Console.WriteLine("*************************************************");
}
}
System.Console.WriteLine("-------- Merge a bunch more ------------------");
for (int x = 0; x < 30; x++) {
mc = db.rangemapmgr.mergeManager.getBestCandidate();
System.Console.WriteLine("merge : " + mc);
if (mc == null) break;
win.debugDump(db, mc);
db.performMerge(mc);
dumpSegmentList(db);
dumpMergeCandidates(db);
win.debugDump(db,null);
}
dumpSegmentList(db);
elapsed = (DateTime.Now - start).TotalMilliseconds / 1000.0;
Console.WriteLine("*************************************************");
Console.WriteLine("*************************************************");
Console.WriteLine("*** merge cycle done {0} records so far, in {1} total time, {2} records/second",
record_count, elapsed, (double)record_count / elapsed);
Console.WriteLine("*************************************************");
Console.WriteLine("*************************************************");
System.Console.WriteLine("** done.");
Environment.Exit(0);
}
static void do_test()
{
Console.WriteLine("ReplTest1 startup...");
LayerManager raw_db = new LayerManager(InitMode.NEW_REGION, @"C:\BENDtst\repl");
StepsDatabase db_factory = new StepsDatabase(raw_db);
Console.WriteLine("----------------[ init two servers together, write some records ]-----------------");
ReplHandler repl_1 = db_factory.getReplicatedDatabase_Fresh("guid1");
waitUntilActive(raw_db, repl_1);
repl_1.setValueParsed("a/1", "1");
ReplHandler repl_2 = db_factory.getReplicatedDatabase_Join("guid2", repl_1.getServerGuid());
waitUntilActive(raw_db, repl_2);
repl_2.setValueParsed("a/2", "5");
Console.WriteLine("-----------------");
raw_db.debugDump();
repl_2.setValueParsed("a/2", "6");
Thread.Sleep(7000);
raw_db.debugDump();
Console.WriteLine("-----------------[ remove one server, write some records ]----------------");
repl_2.Shutdown();
// wait until repl2 is really shutdown
waitUntilState(raw_db, repl_2, ReplState.shutdown);
// make sure our log does not continue from repl_2 logs
repl_1.setValueParsed("c/1", "10");
repl_1.truncateLogs_Hack();
raw_db.debugDump();
Console.WriteLine("----------------[ reinit server 2 ]-----------------------------");
repl_2 = db_factory.getReplicatedDatabase_Resume("guid2");
waitUntilActive(raw_db, repl_2);
Thread.Sleep(7000);
raw_db.debugDump();
Thread.Sleep(7000);
// Environment.Exit(1); // exit
repl_2.setValueParsed("d/1", "20");
repl_1.setValueParsed("c/1", "10");
Thread.Sleep(1000);
repl_2.truncateLogs_Hack();
Thread.Sleep(1000);
repl_1.truncateLogs_Hack();
Console.WriteLine("----------------[ both logs should be truncated ]-----------------------------");
raw_db.debugDump();
Console.WriteLine("----------------[ create server 3 ]-----------------------------");
ReplHandler repl_3 = db_factory.getReplicatedDatabase_Join("guid3", "guid2");
Thread.Sleep(7000);
raw_db.debugDump();
repl_3.setValueParsed("q/1", "10");
Thread.Sleep(7000);
raw_db.debugDump();
Console.WriteLine("quitting..");
Environment.Exit(0);
}
static void snapshot_test()
{
Console.WriteLine("======================= Snapshot DB Test ==============================");
LayerManager raw_db = new LayerManager(InitMode.NEW_REGION, "c:\\BENDtst\\main");
StepsDatabase db_broker = new StepsDatabase(raw_db);
IStepsKVDB generic_db = db_broker.getSnapshotDatabase();
StepsStageSnapshot db = (StepsStageSnapshot)generic_db;
db.setValue(new RecordKey().appendParsedKey("test/1"),
RecordUpdate.WithPayload("blah-t0"));
IStepsKVDB db_snap = db.getSnapshot();
db.setValue(new RecordKey().appendParsedKey("test/1"),
RecordUpdate.WithPayload("blah-t1"));
var key = new RecordKey().appendParsedKey("test/1");
raw_db.debugDump();
Console.WriteLine("-------------------[ top level readback ] -------------------");
foreach (var rec in db.scanForward(new ScanRange<RecordKey>(key,new ScanRange<RecordKey>.maxKey(),null))) {
Console.WriteLine(rec);
}
Console.WriteLine("-------------------[ snapshot readback ] -------------------");
foreach (var rec in db_snap.scanForward(new ScanRange<RecordKey>(key, new ScanRange<RecordKey>.maxKey(), null))) {
Console.WriteLine(rec);
}
}