//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test void shouldSurviveFilesystemErrors() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void ShouldSurviveFilesystemErrors()
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.neo4j.adversaries.RandomAdversary adversary = new org.neo4j.adversaries.RandomAdversary(0.1, 0.1, 0);
RandomAdversary adversary = new RandomAdversary(0.1, 0.1, 0);
adversary.ProbabilityFactor = 0;
AdversarialFileSystemAbstraction adversarialFileSystem = new SensibleAdversarialFileSystemAbstraction(adversary, _fileSystem);
RotatingFileOutputStreamSupplier supplier = new RotatingFileOutputStreamSupplier(adversarialFileSystem, _logFile, 1000, 0, 9, _directExecutor);
adversary.ProbabilityFactor = 1;
WriteLines(supplier, 10000);
// run cleanly for a while, to allow it to fill any gaps left in log archive numbers
adversary.ProbabilityFactor = 0;
WriteLines(supplier, 10000);
assertThat(_fileSystem.fileExists(_logFile), @is(true));
assertThat(_fileSystem.fileExists(_archiveLogFile1), @is(true));
assertThat(_fileSystem.fileExists(_archiveLogFile2), @is(true));
assertThat(_fileSystem.fileExists(_archiveLogFile3), @is(true));
assertThat(_fileSystem.fileExists(_archiveLogFile4), @is(true));
assertThat(_fileSystem.fileExists(_archiveLogFile5), @is(true));
assertThat(_fileSystem.fileExists(_archiveLogFile6), @is(true));
assertThat(_fileSystem.fileExists(_archiveLogFile7), @is(true));
assertThat(_fileSystem.fileExists(_archiveLogFile8), @is(true));
assertThat(_fileSystem.fileExists(_archiveLogFile9), @is(true));
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void sendLargeFileWithUnreliableReadBufferSize() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void SendLargeFileWithUnreliableReadBufferSize()
{
// given
sbyte[] bytes = new sbyte[MAX_SIZE * 3];
_random.NextBytes(bytes);
File smallFile = TestDirectory.file("smallFile");
using (StoreChannel storeChannel = _fs.create(smallFile))
{
storeChannel.write(ByteBuffer.wrap(bytes));
}
Adversary adversary = new RandomAdversary(0.9, 0.0, 0.0);
AdversarialFileSystemAbstraction afs = new AdversarialFileSystemAbstraction(adversary, _fs);
FileSender fileSender = new FileSender(new StoreResource(smallFile, null, 16, afs));
// when + then
assertFalse(fileSender.EndOfInput);
assertEquals(FileChunk.Create(copyOfRange(bytes, 0, MAX_SIZE), false), fileSender.ReadChunk(_allocator));
assertEquals(FileChunk.Create(copyOfRange(bytes, MAX_SIZE, MAX_SIZE * 2), false), fileSender.ReadChunk(_allocator));
assertEquals(FileChunk.Create(copyOfRange(bytes, MAX_SIZE * 2, bytes.Length), true), fileSender.ReadChunk(_allocator));
assertNull(fileSender.ReadChunk(_allocator));
assertTrue(fileSender.EndOfInput);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @ParameterizedTest @ValueSource(ints = {0, 1}) void mustHandleMischiefInPositionedVectoredRead(int noChannelStriping) throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void MustHandleMischiefInPositionedVectoredRead(int noChannelStriping)
{
int bytesTotal = 512;
int bytesPerPage = 32;
int pageCount = bytesTotal / bytesPerPage;
sbyte[] data = new sbyte[bytesTotal];
ThreadLocalRandom.current().NextBytes(data);
PageSwapperFactory factory = CreateSwapperFactory();
factory.Open(Fs, Configuration.EMPTY);
File file = File;
PageSwapper swapper = CreateSwapper(factory, file, bytesTotal, NoCallback, true, Bool(noChannelStriping));
try
{
long page = CreatePage(data);
swapper.Write(0, page);
}
finally
{
swapper.Close();
}
RandomAdversary adversary = new RandomAdversary(0.5, 0.0, 0.0);
factory.Open(new AdversarialFileSystemAbstraction(adversary, Fs), Configuration.EMPTY);
swapper = CreateSwapper(factory, file, bytesPerPage, NoCallback, false, Bool(noChannelStriping));
long[] pages = new long[pageCount];
for (int i = 0; i < pageCount; i++)
{
pages[i] = CreatePage(bytesPerPage);
}
sbyte[] temp = new sbyte[bytesPerPage];
try
{
for (int i = 0; i < 10_000; i++)
{
foreach (long page in pages)
{
Clear(page);
}
assertThat(swapper.Read(0, pages, bytesPerPage, 0, pages.Length), @is(( long )bytesTotal));
for (int j = 0; j < pageCount; j++)
{
Array.Copy(data, j * bytesPerPage, temp, 0, bytesPerPage);
assertThat(Array(pages[j]), @is(temp));
}
}
}
finally
{
swapper.Close();
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @ParameterizedTest @ValueSource(ints = {0, 1}) void mustHandleMischiefInPositionedVectoredWrite(int noChannelStriping) throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void MustHandleMischiefInPositionedVectoredWrite(int noChannelStriping)
{
int bytesTotal = 512;
int bytesPerPage = 32;
int pageCount = bytesTotal / bytesPerPage;
sbyte[] data = new sbyte[bytesTotal];
ThreadLocalRandom.current().NextBytes(data);
long zeroPage = CreatePage(bytesPerPage);
Clear(zeroPage);
File file = File;
PageSwapperFactory factory = CreateSwapperFactory();
RandomAdversary adversary = new RandomAdversary(0.5, 0.0, 0.0);
factory.Open(new AdversarialFileSystemAbstraction(adversary, Fs), Configuration.EMPTY);
PageSwapper swapper = CreateSwapper(factory, file, bytesPerPage, NoCallback, true, Bool(noChannelStriping));
long[] writePages = new long[pageCount];
long[] readPages = new long[pageCount];
long[] zeroPages = new long[pageCount];
for (int i = 0; i < pageCount; i++)
{
writePages[i] = CreatePage(bytesPerPage);
PutBytes(writePages[i], data, 0, i * bytesPerPage, bytesPerPage);
readPages[i] = CreatePage(bytesPerPage);
zeroPages[i] = zeroPage;
}
try
{
for (int i = 0; i < 10_000; i++)
{
adversary.ProbabilityFactor = 0;
swapper.Write(0, zeroPages, 0, pageCount);
adversary.ProbabilityFactor = 1;
swapper.Write(0, writePages, 0, pageCount);
foreach (long readPage in readPages)
{
Clear(readPage);
}
adversary.ProbabilityFactor = 0;
assertThat(swapper.Read(0, readPages, bytesPerPage, 0, pageCount), @is(( long )bytesTotal));
for (int j = 0; j < pageCount; j++)
{
assertThat(Array(readPages[j]), @is(Array(writePages[j])));
}
}
}
finally
{
swapper.Close();
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @ParameterizedTest @ValueSource(ints = {0, 1}) void mustHandleMischiefInPositionedRead(int noChannelStriping) throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void MustHandleMischiefInPositionedRead(int noChannelStriping)
{
int bytesTotal = 512;
sbyte[] data = new sbyte[bytesTotal];
ThreadLocalRandom.current().NextBytes(data);
PageSwapperFactory factory = CreateSwapperFactory();
factory.Open(Fs, Configuration.EMPTY);
File file = File;
PageSwapper swapper = CreateSwapper(factory, file, bytesTotal, NoCallback, true, Bool(noChannelStriping));
try
{
long page = CreatePage(data);
swapper.Write(0, page);
}
finally
{
swapper.Close();
}
RandomAdversary adversary = new RandomAdversary(0.5, 0.0, 0.0);
factory.Open(new AdversarialFileSystemAbstraction(adversary, Fs), Configuration.EMPTY);
swapper = CreateSwapper(factory, file, bytesTotal, NoCallback, false, Bool(noChannelStriping));
long page = CreatePage(bytesTotal);
try
{
for (int i = 0; i < 10_000; i++)
{
Clear(page);
assertThat(swapper.Read(0, page, SizeOfAsInt(page)), @is(( long )bytesTotal));
assertThat(Array(page), @is(data));
}
}
finally
{
swapper.Close();
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @RepeatedTest(20) void pageCacheMustRemainInternallyConsistentWhenGettingRandomFailures()
internal virtual void PageCacheMustRemainInternallyConsistentWhenGettingRandomFailures()
{
assertTimeout(ofMillis(LONG_TIMEOUT_MILLIS), () =>
{
// NOTE: This test is inherently non-deterministic. This means that every failure must be
// thoroughly investigated, since they have a good chance of being a real issue.
// This is effectively a targeted robustness test.
RandomAdversary adversary = new RandomAdversary(0.5, 0.2, 0.2);
adversary.ProbabilityFactor = 0.0;
FileSystemAbstraction fs = new AdversarialFileSystemAbstraction(adversary, this.fs);
ThreadLocalRandom rng = ThreadLocalRandom.current();
// Because our test failures are non-deterministic, we use this tracer to capture a full history of the
// events leading up to any given failure.
LinearTracers linearTracers = LinearHistoryTracerFactory.pageCacheTracer();
getPageCache(fs, maxPages, linearTracers.PageCacheTracer, linearTracers.CursorTracerSupplier);
PagedFile pfA = pageCache.map(existingFile("a"), filePageSize);
PagedFile pfB = pageCache.map(existingFile("b"), filePageSize / 2 + 1);
adversary.ProbabilityFactor = 1.0;
for (int i = 0; i < 1000; i++)
{
PagedFile pagedFile = rng.nextBoolean() ? pfA : pfB;
long maxPageId = pagedFile.LastPageId;
bool performingRead = rng.nextBoolean() && maxPageId != -1;
long startingPage = maxPageId < 0 ? 0 : rng.nextLong(maxPageId + 1);
int pfFlags = performingRead ? PF_SHARED_READ_LOCK : PF_SHARED_WRITE_LOCK;
int pageSize = pagedFile.PageSize();
try
{
using (PageCursor cursor = pagedFile.Io(startingPage, pfFlags))
{
if (performingRead)
{
PerformConsistentAdversarialRead(cursor, maxPageId, startingPage, pageSize);
}
else
{
PerformConsistentAdversarialWrite(cursor, rng, pageSize);
}
}
}
catch (AssertionError error)
{
// Capture any exception that might have hit the eviction thread.
adversary.ProbabilityFactor = 0.0;
try
{
using (PageCursor cursor = pagedFile.Io(0, PF_SHARED_WRITE_LOCK))
{
for (int j = 0; j < 100; j++)
{
cursor.Next(rng.nextLong(maxPageId + 1));
}
}
}
catch (Exception throwable)
{
error.addSuppressed(throwable);
}
throw error;
}
catch (Exception)
{
// Don't worry about it... it's fine!
// throwable.printStackTrace(); // only enable this when debugging test failures.
}
}
// Unmapping will cause pages to be flushed.
// We don't want that to fail, since it will upset the test tear-down.
adversary.ProbabilityFactor = 0.0;
try
{
// Flushing all pages, if successful, should clear any internal
// exception.
pageCache.flushAndForce();
// Do some post-chaos verification of what has been written.
VerifyAdversarialPagedContent(pfA);
VerifyAdversarialPagedContent(pfB);
pfA.Close();
pfB.Close();
}
catch (Exception e)
{
linearTracers.printHistory(System.err);
throw e;
}
});
}
public AdversarialChannelDefaultFileSystemAbstraction(RandomAdversary adversary)
{
this._adversary = adversary;
}
