public unsafe void GetCriteriaAndEtag(long id, DocumentsOperationContext context, out SubscriptionCriteria criteria, out long startEtag)
{
var transactionPersistentContext = new TransactionPersistentContext();
using (var tx = _environment.ReadTransaction(transactionPersistentContext))
{
var config = GetSubscriptionConfig(id, tx);
int criteriaSize;
var criteriaPtr = config.Read(SubscriptionSchema.SubscriptionTable.CriteriaIndex, out criteriaSize);
var criteriaBlittable = new BlittableJsonReaderObject(criteriaPtr, criteriaSize, context);
criteria = JsonDeserializationServer.SubscriptionCriteria(criteriaBlittable);
startEtag = *(long *)config.Read(SubscriptionSchema.SubscriptionTable.AckEtagIndex, out criteriaSize);
}
}
private void ValidateMulti(StorageEnvironment env, IEnumerable <string> trees)
{
using (var snapshot = env.ReadTransaction())
{
foreach (var tree in trees)
{
using (var iterator = snapshot.ReadTree(tree).MultiRead("test/0/user-50"))
{
Assert.True(iterator.Seek(Slices.BeforeAllKeys));
var keys = new HashSet <string>();
var count = 0;
do
{
keys.Add(iterator.CurrentKey.ToString());
Guid.Parse(iterator.CurrentKey.ToString());
count++;
}while (iterator.MoveNext());
Assert.Equal(2, count);
Assert.Equal(2, keys.Count);
}
}
}
}
public void ShouldWork()
{
using (var env = new StorageEnvironment(StorageEnvironmentOptions.CreateMemoryOnly()))
{
using (var tx = env.WriteTransaction())
{
var s = new string('0', 500);
var tree = tx.CreateTree("data");
for (int i = 0; i < 10; i++)
{
tree.Add("users-" + i + "-" + s, new byte[0]);
}
tx.Commit();
}
using (var tx = env.ReadTransaction())
{
var tree = tx.ReadTree("data");
using (var it = tree.Iterate(false))
{
Slice key;
Slice.From(tx.Allocator, "users-7", out key);
Assert.True(it.Seek(key));
for (int i = 0; i < 10; i++)
{
Slice.From(tx.Allocator, "users-" + i, out key);
Assert.True(it.Seek(key), i.ToString());
}
}
}
}
}
private void ValidateRecords(StorageEnvironment env, IEnumerable <string> trees, IList <string> ids)
{
using (var snapshot = env.ReadTransaction())
{
foreach (var treeName in trees)
{
var tree = snapshot.ReadTree(treeName);
using (var iterator = tree.Iterate(false))
{
Assert.True(iterator.Seek(Slices.BeforeAllKeys));
var keys = new HashSet <string>();
var count = 0;
do
{
keys.Add(iterator.CurrentKey.ToString());
Assert.True(ids.Contains(iterator.CurrentKey.ToString()), "Unknown key: " + iterator.CurrentKey);
Assert.NotNull(tree.Read(iterator.CurrentKey));
count++;
}while (iterator.MoveNext());
Assert.Equal(ids.Count, tree.State.NumberOfEntries);
Assert.Equal(ids.Count, count);
Assert.Equal(ids.Count, keys.Count);
}
}
}
}
private void ValidateMultiRecords(StorageEnvironment env, IEnumerable <string> trees, int documentCount, int i)
{
using (var tx = env.ReadTransaction())
{
for (var j = 0; j < 10; j++)
{
foreach (var treeName in trees)
{
var tree = tx.CreateTree(treeName);
using (var iterator = tree.MultiRead((j % 10).ToString()))
{
Assert.True(iterator.Seek(Slices.BeforeAllKeys));
var count = 0;
do
{
count++;
}while (iterator.MoveNext());
Assert.Equal((i * documentCount) / 10, count);
}
}
}
}
}
public void DataIsKeptAfterRestart_OnDisk()
{
using (var pager = StorageEnvironmentOptions.ForPath(DataDir))
{
pager.OwnsPagers = false;
using (var env = new StorageEnvironment(pager))
{
using (var tx = env.WriteTransaction())
{
var tree = tx.CreateTree("foo");
tree.Add("test/1", new MemoryStream());
tx.Commit();
}
using (var tx = env.WriteTransaction())
{
var tree = tx.CreateTree("foo");
tree.Add("test/2", new MemoryStream());
tx.Commit();
}
}
using (var env = new StorageEnvironment(pager))
{
using (var tx = env.ReadTransaction())
{
var tree = tx.CreateTree("foo");
Assert.NotNull(tree.Read("test/1"));
Assert.NotNull(tree.Read("test/2"));
tx.Commit();
}
}
}
}
public void IterationShouldNotFindAnyRecordsAndShouldNotThrowWhenNumberOfEntriesOnPageIs1AndKeyDoesNotMatch()
{
using (var env = new StorageEnvironment(StorageEnvironmentOptions.CreateMemoryOnly()))
{
using (var tx = env.WriteTransaction())
{
tx.CreateTree("tree");
tx.Commit();
}
using (var tx = env.WriteTransaction())
{
var tree = tx.ReadTree("tree");
tree.Add(@"Raven\Database\1", StreamFor("123"));
tx.Commit();
}
using (var snapshot = env.ReadTransaction())
using (var iterator = snapshot.ReadTree("tree").Iterate(false))
{
Slice v;
Slice.From(snapshot.Allocator, @"Raven\Filesystem\", out v);
Assert.False(iterator.Seek(v));
}
}
}
public void CanBackupAndRestoreSmall()
{
RequireFileBasedPager();
var random = new Random();
var buffer = new byte[8192];
random.NextBytes(buffer);
using (var tx = Env.WriteTransaction())
{
var tree = tx.CreateTree("foo");
for (int i = 0; i < 2; i++)
{
tree.Add("items/" + i, new MemoryStream(buffer));
}
tx.Commit();
}
Env.FlushLogToDataFile(); // force writing data to the data file
// add more data to journal files
using (var tx = Env.WriteTransaction())
{
var tree = tx.CreateTree("foo");
for (int i = 2; i < 4; i++)
{
tree.Add("items/" + i, new MemoryStream(buffer));
}
tx.Commit();
}
Env.FlushLogToDataFile(); // force writing data to the data file - this won't sync data to disk because there was another sync within last minute
BackupMethods.Full.ToFile(Env, Path.Combine(DataDir, "voron-test.backup"));
BackupMethods.Full.Restore(Path.Combine(DataDir, "voron-test.backup"), Path.Combine(DataDir, "backup-test.data"));
var options = StorageEnvironmentOptions.ForPath(Path.Combine(DataDir, "backup-test.data"));
options.MaxLogFileSize = Env.Options.MaxLogFileSize;
using (var env = new StorageEnvironment(options))
{
using (var tx = env.ReadTransaction())
{
var tree = tx.CreateTree("foo");
for (int i = 0; i < 4; i++)
{
var readResult = tree.Read("items/" + i);
Assert.NotNull(readResult);
var memoryStream = new MemoryStream();
readResult.Reader.CopyTo(memoryStream);
Assert.Equal(memoryStream.ToArray(), buffer);
}
}
}
}
public void IncorrectWriteOfOverflowPagesFromJournalsToDataFile_RavenDB_2806()
{
RequireFileBasedPager();
const int testedOverflowSize = 20000;
var overflowValue = new byte[testedOverflowSize];
new Random(1).NextBytes(overflowValue);
using (var tx = Env.WriteTransaction())
{
var tree = tx.CreateTree("test");
var itemBytes = new byte[16000];
new Random(2).NextBytes(itemBytes);
tree.Add("items/1", itemBytes);
new Random(3).NextBytes(itemBytes);
tree.Add("items/2", itemBytes);
tree.Delete("items/1");
tree.Delete("items/2");
tree.Add("items/3", overflowValue);
tx.Commit();
}
BackupMethods.Incremental.ToFile(Env, IncrementalBackupTestUtils.IncrementalBackupFile(0));
var options = StorageEnvironmentOptions.ForPath(IncrementalBackupTestUtils.RestoredStoragePath);
options.MaxLogFileSize = Env.Options.MaxLogFileSize;
BackupMethods.Incremental.Restore(options, new[]
{
IncrementalBackupTestUtils.IncrementalBackupFile(0)
});
using (var env = new StorageEnvironment(options))
{
using (var tx = env.ReadTransaction())
{
var tree = tx.ReadTree("test");
var readResult = tree.Read("items/3");
var readBytes = new byte[testedOverflowSize];
readResult.Reader.Read(readBytes, 0, testedOverflowSize);
Assert.Equal(overflowValue, readBytes);
}
}
}
public void ShouldNotThrowChecksumMismatch()
{
var random = new Random(1);
var buffer = new byte[100];
random.NextBytes(buffer);
for (int i = 0; i < 100; i++)
{
buffer[i] = 13;
}
var options = StorageEnvironmentOptions.ForPath(DataDir);
using (var env = new StorageEnvironment(options))
{
using (var tx = env.WriteTransaction())
{
var tree = tx.CreateTree("foo");
for (int i = 0; i < 50; i++)
{
tree.Add("items/" + i, new MemoryStream(buffer));
}
tx.Commit();
}
using (var tx = env.WriteTransaction())
{
var tree = tx.CreateTree("foo");
for (int i = 50; i < 100; i++)
{
tree.Add("items/" + i, new MemoryStream(buffer));
}
tx.Commit();
}
}
options = StorageEnvironmentOptions.ForPath(DataDir);
using (var env = new StorageEnvironment(options))
{
using (var tx = env.ReadTransaction())
{
var tree = tx.CreateTree("foo");
for (int i = 0; i < 100; i++)
{
var readResult = tree.Read("items/" + i);
Assert.NotNull(readResult);
var memoryStream = new MemoryStream();
readResult.Reader.CopyTo(memoryStream);
Assert.Equal(memoryStream.ToArray(), buffer);
}
}
}
}
public void StorageRecoveryShouldWorkWhenThereAreMultipleCommitedTransactions2()
{
using (var env = new StorageEnvironment(StorageEnvironmentOptions.ForPath(DataDir)))
{
using (var tx = env.WriteTransaction())
{
var tree = tx.CreateTree("atree");
for (var i = 0; i < 1000; i++)
{
tree.Add("key" + i, new MemoryStream());
}
tx.Commit();
}
using (var tx = env.WriteTransaction())
{
var tree = tx.CreateTree("btree");
for (var i = 0; i < 5; i++)
{
tree.Add("key" + i, new MemoryStream());
}
tx.Commit();
}
}
using (var env = new StorageEnvironment(StorageEnvironmentOptions.ForPath(DataDir)))
{
using (var tx = env.WriteTransaction())
{
tx.CreateTree("atree");
tx.CreateTree("btree");
tx.Commit();
}
using (var tx = env.ReadTransaction())
{
var aTree = tx.CreateTree("atree");
var bTree = tx.CreateTree("btree");
for (var i = 0; i < 1000; i++)
{
Assert.NotNull(aTree.Read("key" + i));
}
for (var i = 0; i < 5; i++)
{
Assert.NotNull(bTree.Read("key" + i));
}
}
}
}
public void OldestActiveTransactionShouldBeCalculatedProperly()
{
using (var options = StorageEnvironmentOptions.CreateMemoryOnly())
{
options.ManualFlushing = true;
using (var env = new StorageEnvironment(options))
{
var trees = CreateTrees(env, 1, "tree");
var transactions = new List <Transaction>();
for (int a = 0; a < 100; a++)
{
var random = new Random(1337);
var buffer = new byte[random.Next(100, 1000)];
random.NextBytes(buffer);
using (var tx = env.WriteTransaction())
{
for (int i = 0; i < 100; i++)
{
foreach (var tree in trees)
{
tx.CreateTree(tree).Add(string.Format("key/{0}/{1}", a, i), new MemoryStream(buffer));
}
}
var txr = env.ReadTransaction();
transactions.Add(txr);
tx.Commit();
}
env.FlushLogToDataFile();
}
Assert.Equal(transactions.OrderBy(x => x.LowLevelTransaction.Id).First().LowLevelTransaction.Id, env.ActiveTransactions.OldestTransaction);
foreach (var tx in transactions)
{
foreach (var tree in trees)
{
using (var iterator = tx.CreateTree(tree).Iterate(false))
{
if (!iterator.Seek(Slices.BeforeAllKeys))
{
continue;
}
do
{
Assert.Contains("key/", iterator.CurrentKey.ToString());
} while (iterator.MoveNext());
}
}
}
}
}
}
public void ShouldBeAbleToWriteValuesGreaterThanLogAndRecoverThem()
{
var random = new Random(1234);
var buffer = new byte[1024 * 512];
random.NextBytes(buffer);
var options = StorageEnvironmentOptions.ForPath(DataDir);
options.MaxLogFileSize = 10 * Constants.Storage.PageSize;
using (var env = new StorageEnvironment(options))
{
using (var tx = env.WriteTransaction())
{
tx.CreateTree("tree");
tx.Commit();
}
using (var tx = env.WriteTransaction())
{
tx.CreateTree("tree").Add("key1", new MemoryStream(buffer));
tx.Commit();
}
}
options = StorageEnvironmentOptions.ForPath(DataDir);
options.MaxLogFileSize = 10 * Constants.Storage.PageSize;
using (var env = new StorageEnvironment(options))
{
using (var tx = env.WriteTransaction())
{
tx.CreateTree("tree");
tx.Commit();
}
using (var tx = env.ReadTransaction())
{
var read = tx.CreateTree("tree").Read("key1");
Assert.NotNull(read);
{
Assert.Equal(buffer.Length, read.Reader.Length);
var bytes = read.Reader.ReadBytes(read.Reader.Length);
Assert.Equal(buffer, bytes.Array.Skip(bytes.Offset).Take(bytes.Count).ToArray());
}
}
}
}
private static void CopyTrees(StorageEnvironment existingEnv, StorageEnvironment compactedEnv, Action <CompactionProgress> progressReport = null)
{
var context = new TransactionPersistentContext(true);
using (var txr = existingEnv.ReadTransaction(context))
using (var rootIterator = txr.LowLevelTransaction.RootObjects.Iterate(false))
{
if (rootIterator.Seek(Slices.BeforeAllKeys) == false)
{
return;
}
var totalTreesCount = txr.LowLevelTransaction.RootObjects.State.NumberOfEntries;
var copiedTrees = 0L;
do
{
var treeName = rootIterator.CurrentKey.ToString();
var currentKey = rootIterator.CurrentKey.Clone(txr.Allocator);
var objectType = txr.GetRootObjectType(currentKey);
switch (objectType)
{
case RootObjectType.None:
break;
case RootObjectType.VariableSizeTree:
copiedTrees = CopyVariableSizeTree(compactedEnv, progressReport, txr, treeName, copiedTrees, totalTreesCount, context);
break;
case RootObjectType.EmbeddedFixedSizeTree:
case RootObjectType.FixedSizeTree:
if (FreeSpaceHandling.IsFreeSpaceTreeName(treeName))
{
copiedTrees++;// we don't copy the fixed size tree
continue;
}
copiedTrees = CopyFixedSizeTrees(compactedEnv, progressReport, txr, rootIterator, treeName, copiedTrees, totalTreesCount, objectType, context);
break;
case RootObjectType.Table:
copiedTrees = CopyTableTree(compactedEnv, progressReport, txr, treeName, copiedTrees, totalTreesCount, context);
break;
default:
throw new ArgumentOutOfRangeException("Unknown " + objectType);
}
} while (rootIterator.MoveNext());
}
}
public void CanBackupAndRestoreOnEmptyStorage()
{
RequireFileBasedPager();
var random = new Random();
var buffer = new byte[8192];
random.NextBytes(buffer);
using (var tx = Env.WriteTransaction())
{
var tree = tx.CreateTree("foo");
for (int i = 0; i < 500; i++)
{
tree.Add("items/" + i, new MemoryStream(buffer));
}
tx.Commit();
}
long nextPageNumberBeforeBackup = Env.NextPageNumber;
BackupMethods.Incremental.ToFile(Env, _incrementalBackupTestUtils.IncrementalBackupFile(0));
var options = StorageEnvironmentOptions.ForPath(_incrementalBackupTestUtils.RestoredStoragePath);
options.MaxLogFileSize = Env.Options.MaxLogFileSize;
BackupMethods.Incremental.Restore(options, new[] { _incrementalBackupTestUtils.IncrementalBackupFile(0) });
using (var env = new StorageEnvironment(options))
{
Assert.Equal(nextPageNumberBeforeBackup, env.NextPageNumber);
using (var tx = env.ReadTransaction())
{
var tree = tx.CreateTree("foo");
for (int i = 0; i < 500; i++)
{
var readResult = tree.Read("items/" + i);
Assert.NotNull(readResult);
var memoryStream = new MemoryStream();
readResult.Reader.CopyTo(memoryStream);
Assert.Equal(memoryStream.ToArray(), buffer);
}
}
}
}
public static IndexDefinition Load(StorageEnvironment environment)
{
using (var context = JsonOperationContext.ShortTermSingleUse())
using (var tx = environment.ReadTransaction())
{
using (var stream = GetIndexDefinitionStream(environment, tx))
using (var reader = context.ReadForDisk(stream, "index/def"))
{
var definition = ReadIndexDefinition(reader);
definition.Name = ReadName(reader);
definition.LockMode = ReadLockMode(reader);
definition.Priority = ReadPriority(reader);
return(definition);
}
}
}
public static string ReadDatabaseId(string name, StorageEnvironment environment)
{
using (var tx = environment.ReadTransaction())
{
var statsTree = tx.ReadTree(IndexSchema.StatsTree);
if (statsTree == null)
{
throw new InvalidOperationException($"Index '{name}' does not contain 'Stats' tree.");
}
var result = statsTree.Read(IndexSchema.DatabaseIdSlice);
if (result == null)
{
return(null); // backward compatibility
}
return(result.Reader.ReadString(result.Reader.Length));
}
}
public static AutoMapReduceIndexDefinition Load(StorageEnvironment environment)
{
using (var context = JsonOperationContext.ShortTermSingleUse())
using (var tx = environment.ReadTransaction())
{
using (var stream = GetIndexDefinitionStream(environment, tx))
{
if (stream == null)
{
return(null);
}
using (var reader = context.ReadForDisk(stream, string.Empty))
{
return(LoadFromJson(reader));
}
}
}
}
public static AutoMapReduceIndexDefinition Load(StorageEnvironment environment)
{
using (var context = JsonOperationContext.ShortTermSingleUse())
using (var tx = environment.ReadTransaction())
{
var tree = tx.CreateTree("Definition");
var result = tree.Read(DefinitionSlice);
if (result == null)
{
return(null);
}
using (var reader = context.ReadForDisk(result.Reader.AsStream(), string.Empty))
{
return(LoadFromJson(reader));
}
}
}
public static IndexSourceType ReadIndexSourceType(string name, StorageEnvironment environment)
{
using (var tx = environment.ReadTransaction())
{
var statsTree = tx.ReadTree(IndexSchema.StatsTree);
if (statsTree == null)
{
throw new InvalidOperationException($"Index '{name}' does not contain 'Stats' tree.");
}
var result = statsTree.Read(IndexSchema.SourceTypeSlice);
if (result == null)
{
return(IndexSourceType.Documents); // backward compatibility
}
return((IndexSourceType)result.Reader.ReadLittleEndianInt32());
}
}
public static IndexType ReadIndexType(string name, StorageEnvironment environment)
{
using (var tx = environment.ReadTransaction())
{
var statsTree = tx.ReadTree(IndexSchema.StatsTree);
if (statsTree == null)
{
throw new InvalidOperationException($"Index '{name}' does not contain 'Stats' tree.");
}
var result = statsTree.Read(IndexSchema.TypeSlice);
if (result == null)
{
throw new InvalidOperationException($"Stats tree does not contain 'Type' entry in index '{name}'.");
}
return((IndexType)result.Reader.ReadLittleEndianInt32());
}
}
public void ReadTransactionCanReadJustCommittedValue()
{
var options = StorageEnvironmentOptions.CreateMemoryOnly();
options.ManualFlushing = true;
using (var env = new StorageEnvironment(options))
{
CreateTrees(env, 1, "tree");
using (var txw = env.WriteTransaction())
{
txw.CreateTree("tree0").Add("key/1", new MemoryStream());
txw.Commit();
using (var txr = env.ReadTransaction())
{
Assert.NotNull(txr.CreateTree("tree0").Read("key/1"));
}
}
}
}
public void DataIsKeptAfterRestartForSubTrees()
{
using (var pureMemoryPager = StorageEnvironmentOptions.CreateMemoryOnly())
{
pureMemoryPager.OwnsPagers = false;
using (var env = new StorageEnvironment(pureMemoryPager))
{
using (var tx = env.WriteTransaction())
{
tx.CreateTree("test");
tx.Commit();
}
using (var tx = env.WriteTransaction())
{
var tree = tx.CreateTree("test");
tree.Add("test", Stream.Null);
tx.Commit();
Assert.NotNull(tree.Read("test"));
}
}
using (var env = new StorageEnvironment(pureMemoryPager))
{
using (var tx = env.WriteTransaction())
{
var tree = tx.CreateTree("test");
tx.Commit();
}
using (var tx = env.ReadTransaction())
{
var tree = tx.CreateTree("test");
Assert.NotNull(tree.Read("test"));
tx.Commit();
}
}
}
}
public static IndexDefinition Load(StorageEnvironment environment)
{
using (var context = JsonOperationContext.ShortTermSingleUse())
using (var tx = environment.ReadTransaction())
{
var tree = tx.CreateTree("Definition");
var result = tree.Read(DefinitionSlice);
if (result == null)
{
return(null);
}
using (var reader = context.ReadForDisk(result.Reader.AsStream(), string.Empty))
{
var definition = ReadIndexDefinition(reader);
definition.Name = ReadName(reader);
definition.LockMode = ReadLockMode(reader);
return(definition);
}
}
}
public void StorageRecoveryShouldWorkWhenThereSingleTransactionToRecoverFromLog()
{
using (var env = new StorageEnvironment(StorageEnvironmentOptions.ForPath(DataDir)))
{
using (var tx = env.WriteTransaction())
{
var tree = tx.CreateTree("tree");
for (var i = 0; i < 100; i++)
{
tree.Add("key" + i, new MemoryStream());
}
tx.Commit();
}
}
using (var env = new StorageEnvironment(StorageEnvironmentOptions.ForPath(DataDir)))
{
using (var tx = env.WriteTransaction())
{
tx.CreateTree("tree");
tx.Commit();
}
using (var tx = env.ReadTransaction())
{
var tree = tx.CreateTree("tree");
for (var i = 0; i < 100; i++)
{
Assert.NotNull(tree.Read("key" + i));
}
}
}
}
public void MultiTreeIteratorShouldBeIsolated1()
{
DeleteDirectory(DataDir);
var options = StorageEnvironmentOptions.ForPath(DataDir);
using (var env = new StorageEnvironment(options))
{
CreateTrees(env, 1, "tree");
for (var i = 0; i < 10; i++)
{
Write(env, i);
}
using (var txr = env.ReadTransaction())
{
var key = Write(env, 10);
using (var iterator = txr.ReadTree("tree0").MultiRead("key/1"))
{
Assert.True(iterator.Seek(Slices.BeforeAllKeys));
var count = 0;
do
{
Assert.True(iterator.CurrentKey.ToString() != key, string.Format("Key '{0}' should not be present in multi-iterator", key));
count++;
}while (iterator.MoveNext());
Assert.Equal(10, count);
}
}
}
}
public void MultiTreeIteratorShouldBeIsolated2()
{
DeleteDirectory(DataDir);
var options = StorageEnvironmentOptions.ForPath(DataDir);
using (var env = new StorageEnvironment(options))
{
CreateTrees(env, 1, "tree");
for (var i = 0; i < 11; i++)
{
Write(env, i);
}
using (var txr = env.ReadTransaction())
{
var key = Delete(env, 10);
using (var iterator = txr.ReadTree("tree0").MultiRead("key/1"))
{
Assert.True(iterator.Seek(Slices.BeforeAllKeys));
var keys = new List <string>();
do
{
keys.Add(iterator.CurrentKey.ToString());
}while (iterator.MoveNext());
Assert.Equal(11, keys.Count);
Assert.Contains(key, keys);
}
}
}
}
public void CanAddMultiValuesUnderTheSameKeyToBatch()
{
using (var env = new StorageEnvironment(StorageEnvironmentOptions.CreateMemoryOnly()))
{
var rand = new Random();
var testBuffer = new byte[168];
rand.NextBytes(testBuffer);
CreateTrees(env, 1, "multitree");
using (var tx = env.WriteTransaction())
{
var batch = tx.CreateTree("multitree0");
batch.MultiAdd("key", "value1");
batch.MultiAdd("key", "value2");
tx.Commit();
}
using (var tx = env.ReadTransaction())
{
var tree = tx.CreateTree("multitree0");
using (var it = tree.MultiRead("key"))
{
Assert.True(it.Seek(Slices.BeforeAllKeys));
Assert.Equal("value1", it.CurrentKey.ToString());
Assert.True(it.MoveNext());
Assert.Equal("value2", it.CurrentKey.ToString());
}
}
}
}
internal HashSet <string> ReadIndexTimeFields()
{
var fields = new HashSet <string>();
using (var tx = _environment.ReadTransaction())
{
var fieldsTree = tx.ReadTree(IndexSchema.FieldsTree);
if (fieldsTree != null)
{
using (var it = fieldsTree.MultiRead(IndexSchema.TimeSlice))
{
if (it.Seek(Slices.BeforeAllKeys))
{
do
{
fields.Add(it.CurrentKey.ToString());
} while (it.MoveNext());
}
}
}
}
return(fields);
}
public void ScratchPagesShouldNotBeReleasedUntilNotUsed()
{
var options = StorageEnvironmentOptions.ForPath(DataDir);
options.ManualFlushing = true;
using (var env = new StorageEnvironment(options))
{
CreateTrees(env, 2, "tree");
for (int a = 0; a < 3; a++)
{
using (var tx = env.WriteTransaction())
{
tx.CreateTree("tree0").Add(string.Format("key/{0}/{1}/1", new string('0', 1000), a), new MemoryStream());
tx.CreateTree("tree0").Add(string.Format("key/{0}/{1}/2", new string('0', 1000), a), new MemoryStream());
tx.Commit();
}
}
using (var tx = env.WriteTransaction())
{
tx.CreateTree("tree1").Add("yek/1", new MemoryStream());
tx.Commit();
}
using (var txr = env.ReadTransaction())
{
using (var iterator = txr.CreateTree("tree0").Iterate(false))
{
Assert.True(iterator.Seek(Slices.BeforeAllKeys)); // all pages are from scratch (one from position 11)
var currentKey = iterator.CurrentKey.ToString();
env.FlushLogToDataFile(); // frees pages from scratch (including the one at position 11)
using (var txw = env.WriteTransaction())
{
var tree = txw.CreateTree("tree1");
tree.Add(string.Format("yek/{0}/0/0", new string('0', 1000)), new MemoryStream()); // allocates new page from scratch (position 11)
txw.Commit();
}
Assert.Equal(currentKey, iterator.CurrentKey.ToString());
using (var txw = env.WriteTransaction())
{
var tree = txw.CreateTree("tree1");
tree.Add("fake", new MemoryStream());
txw.Commit();
}
Assert.Equal(currentKey, iterator.CurrentKey.ToString());
var count = 0;
do
{
currentKey = iterator.CurrentKey.ToString();
count++;
Assert.Contains("key/", currentKey);
}while (iterator.MoveNext());
Assert.Equal(6, count);
}
}
}
}
