//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private void prepareNeoStoreFile(String storeVersion, org.neo4j.io.pagecache.PageCache pageCache) throws java.io.IOException
private void PrepareNeoStoreFile(string storeVersion, PageCache pageCache)
{
File neoStoreFile = CreateNeoStoreFile();
long value = MetaDataStore.versionStringToLong(storeVersion);
MetaDataStore.setRecord(pageCache, neoStoreFile, STORE_VERSION, value);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private static void prepareNeoStoreFile(org.neo4j.io.fs.FileSystemAbstraction fileSystem, org.neo4j.io.layout.DatabaseLayout databaseLayout, String storeVersion, org.neo4j.io.pagecache.PageCache pageCache) throws java.io.IOException
private static void PrepareNeoStoreFile(FileSystemAbstraction fileSystem, DatabaseLayout databaseLayout, string storeVersion, PageCache pageCache)
{
File neoStoreFile = CreateNeoStoreFile(fileSystem, databaseLayout);
long value = MetaDataStore.versionStringToLong(storeVersion);
MetaDataStore.setRecord(pageCache, neoStoreFile, STORE_VERSION, value);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Before public void setup() throws java.io.IOException
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void Setup()
{
FileSystem = FileSystemRule.get();
DatabaseLayout = TestDirectory.databaseLayout();
// doesn't matter which version we pick we are changing it to the wrong one...
MigrationTestUtils.FindFormatStoreDirectoryForVersion(StandardV2_3.STORE_VERSION, DatabaseLayout.databaseDirectory());
changeVersionNumber(FileSystem, DatabaseLayout.file(NEOSTORE_FILENAME), Version);
File metadataStore = DatabaseLayout.metadataStore();
PageCache pageCache = PageCacheRule.getPageCache(FileSystem);
MetaDataStore.setRecord(pageCache, metadataStore, STORE_VERSION, MetaDataStore.versionStringToLong(Version));
VersionAwareLogEntryReader <ReadableClosablePositionAwareChannel> logEntryReader = new VersionAwareLogEntryReader <ReadableClosablePositionAwareChannel>();
LogFiles logFiles = LogFilesBuilder.logFilesBasedOnlyBuilder(DatabaseLayout.databaseDirectory(), FileSystem).build();
TailScanner = new LogTailScanner(logFiles, logEntryReader, new Monitors());
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test void startTheDatabaseWithWrongVersionShouldFailAlsoWhenUpgradeIsAllowed() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void StartTheDatabaseWithWrongVersionShouldFailAlsoWhenUpgradeIsAllowed()
{
// given
// create a store
File databaseDirectory = _testDirectory.databaseDir();
GraphDatabaseService db = (new TestGraphDatabaseFactory()).newEmbeddedDatabase(databaseDirectory);
using (Transaction tx = Db.beginTx())
{
Db.createNode();
tx.Success();
}
Db.shutdown();
// mess up the version in the metadatastore
string badStoreVersion = "bad";
using (FileSystemAbstraction fileSystem = new DefaultFileSystemAbstraction(), ThreadPoolJobScheduler scheduler = new ThreadPoolJobScheduler(), PageCache pageCache = createPageCache(fileSystem, scheduler))
{
MetaDataStore.setRecord(pageCache, _testDirectory.databaseLayout().metadataStore(), MetaDataStore.Position.STORE_VERSION, MetaDataStore.versionStringToLong(badStoreVersion));
}
Exception exception = assertThrows(typeof(Exception), () => (new TestGraphDatabaseFactory()).newEmbeddedDatabaseBuilder(databaseDirectory).setConfig(GraphDatabaseSettings.allow_upgrade, "true").newGraphDatabase());
assertTrue(exception.InnerException is LifecycleException);
assertTrue(exception.InnerException.InnerException is StoreUpgrader.UnexpectedUpgradingStoreVersionException);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test void startTheDatabaseWithWrongVersionShouldFailWithUpgradeNotAllowed() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
internal virtual void StartTheDatabaseWithWrongVersionShouldFailWithUpgradeNotAllowed()
{
// given
// create a store
File databaseDir = _testDirectory.databaseDir();
GraphDatabaseService db = (new TestGraphDatabaseFactory()).newEmbeddedDatabase(databaseDir);
using (Transaction tx = Db.beginTx())
{
Db.createNode();
tx.Success();
}
Db.shutdown();
// mess up the version in the metadatastore
using (FileSystemAbstraction fileSystem = new DefaultFileSystemAbstraction(), ThreadPoolJobScheduler scheduler = new ThreadPoolJobScheduler(), PageCache pageCache = createPageCache(fileSystem, scheduler))
{
MetaDataStore.setRecord(pageCache, _testDirectory.databaseLayout().metadataStore(), MetaDataStore.Position.STORE_VERSION, MetaDataStore.versionStringToLong("bad"));
}
Exception exception = assertThrows(typeof(Exception), () => (new TestGraphDatabaseFactory()).newEmbeddedDatabase(databaseDir));
assertTrue(exception.InnerException is LifecycleException);
assertTrue(exception.InnerException.InnerException is System.ArgumentException);
assertEquals("Unknown store version 'bad'", exception.InnerException.InnerException.Message);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private void updateOrAddNeoStoreFieldsAsPartOfMigration(org.neo4j.io.layout.DatabaseLayout migrationStructure, org.neo4j.io.layout.DatabaseLayout sourceDirectoryStructure, String versionToMigrateTo, org.neo4j.kernel.impl.transaction.log.LogPosition lastClosedTxLogPosition) throws java.io.IOException
private void UpdateOrAddNeoStoreFieldsAsPartOfMigration(DatabaseLayout migrationStructure, DatabaseLayout sourceDirectoryStructure, string versionToMigrateTo, LogPosition lastClosedTxLogPosition)
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.io.File storeDirNeoStore = sourceDirectoryStructure.metadataStore();
File storeDirNeoStore = sourceDirectoryStructure.MetadataStore();
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.io.File migrationDirNeoStore = migrationStructure.metadataStore();
File migrationDirNeoStore = migrationStructure.MetadataStore();
fileOperation(COPY, _fileSystem, sourceDirectoryStructure, migrationStructure, Iterables.iterable(DatabaseFile.METADATA_STORE), true, ExistingTargetStrategy.SKIP);
MetaDataStore.setRecord(_pageCache, migrationDirNeoStore, MetaDataStore.Position.UPGRADE_TRANSACTION_ID, MetaDataStore.getRecord(_pageCache, storeDirNeoStore, MetaDataStore.Position.LAST_TRANSACTION_ID));
MetaDataStore.setRecord(_pageCache, migrationDirNeoStore, MetaDataStore.Position.UPGRADE_TIME, DateTimeHelper.CurrentUnixTimeMillis());
// Store the checksum of the transaction id the upgrade is at right now. Store it both as
// LAST_TRANSACTION_CHECKSUM and UPGRADE_TRANSACTION_CHECKSUM. Initially the last transaction and the
// upgrade transaction will be the same, but imagine this scenario:
// - legacy store is migrated on instance A at transaction T
// - upgraded store is copied, via backup or HA or whatever to instance B
// - instance A performs a transaction
// - instance B would like to communicate with A where B's last transaction checksum
// is verified on A. A, at this point not having logs from pre-migration era, will need to
// know the checksum of transaction T to accommodate for this request from B. A will be able
// to look up checksums for transactions succeeding T by looking at its transaction logs,
// but T needs to be stored in neostore to be accessible. Obviously this scenario is only
// problematic as long as we don't migrate and translate old logs.
TransactionId lastTxInfo = ReadLastTxInformation(migrationStructure);
MetaDataStore.setRecord(_pageCache, migrationDirNeoStore, MetaDataStore.Position.LAST_TRANSACTION_CHECKSUM, lastTxInfo.Checksum());
MetaDataStore.setRecord(_pageCache, migrationDirNeoStore, MetaDataStore.Position.UPGRADE_TRANSACTION_CHECKSUM, lastTxInfo.Checksum());
MetaDataStore.setRecord(_pageCache, migrationDirNeoStore, MetaDataStore.Position.LAST_TRANSACTION_COMMIT_TIMESTAMP, lastTxInfo.CommitTimestamp());
MetaDataStore.setRecord(_pageCache, migrationDirNeoStore, MetaDataStore.Position.UPGRADE_TRANSACTION_COMMIT_TIMESTAMP, lastTxInfo.CommitTimestamp());
// add LAST_CLOSED_TRANSACTION_LOG_VERSION and LAST_CLOSED_TRANSACTION_LOG_BYTE_OFFSET to the migrated
// NeoStore
MetaDataStore.setRecord(_pageCache, migrationDirNeoStore, MetaDataStore.Position.LAST_CLOSED_TRANSACTION_LOG_VERSION, lastClosedTxLogPosition.LogVersion);
MetaDataStore.setRecord(_pageCache, migrationDirNeoStore, MetaDataStore.Position.LAST_CLOSED_TRANSACTION_LOG_BYTE_OFFSET, lastClosedTxLogPosition.ByteOffset);
// Upgrade version in NeoStore
MetaDataStore.setRecord(_pageCache, migrationDirNeoStore, MetaDataStore.Position.STORE_VERSION, MetaDataStore.versionStringToLong(versionToMigrateTo));
}
