public override Lifecycle NewInstance(KernelContext context, Dependencies dependencies)
{
Config config = dependencies.Config;
bool ephemeral = config.Get(GraphDatabaseSettings.ephemeral);
FileSystemAbstraction fileSystemAbstraction = dependencies.FileSystem();
DirectoryFactory directoryFactory = directoryFactory(ephemeral);
OperationalMode operationalMode = context.DatabaseInfo().OperationalMode;
JobScheduler scheduler = dependencies.Scheduler();
IndexDirectoryStructure.Factory directoryStructureFactory = SubProviderDirectoryStructure(context.Directory());
TokenHolders tokenHolders = dependencies.TokenHolders();
Log log = dependencies.LogService.getInternalLog(typeof(FulltextIndexProvider));
AuxiliaryTransactionStateManager auxiliaryTransactionStateManager;
try
{
auxiliaryTransactionStateManager = dependencies.AuxiliaryTransactionStateManager();
}
catch (UnsatisfiedDependencyException e)
{
string message = "Fulltext indexes failed to register as transaction state providers. This means that, if queried, they will not be able to " +
"uncommitted transactional changes into account. This is fine if the indexes are opened for non-transactional work, such as for " +
"consistency checking. The reason given is: " + e.Message;
LogDependencyException(context, log.ErrorLogger(), message);
auxiliaryTransactionStateManager = new NullAuxiliaryTransactionStateManager();
}
FulltextIndexProvider provider = new FulltextIndexProvider(Descriptor, directoryStructureFactory, fileSystemAbstraction, config, tokenHolders, directoryFactory, operationalMode, scheduler, auxiliaryTransactionStateManager, log);
string procedureRegistrationFailureMessage = "Failed to register the fulltext index procedures. The fulltext index provider will be loaded and " +
"updated like normal, but it might not be possible to query any fulltext indexes. The reason given is: ";
try
{
dependencies.Procedures().registerComponent(typeof(FulltextAdapter), procContext => provider, true);
dependencies.Procedures().registerProcedure(typeof(FulltextProcedures));
}
catch (KernelException e)
{
string message = procedureRegistrationFailureMessage + e.getUserMessage(new NonTransactionalTokenNameLookup(tokenHolders));
// We use the 'warn' logger in this case, because it can occur due to multi-database shenanigans, or due to internal restarts in HA.
// These scenarios are less serious, and will _probably_ not prevent FTS from working. Hence we only warn about this.
LogDependencyException(context, log.WarnLogger(), message);
}
catch (UnsatisfiedDependencyException e)
{
string message = procedureRegistrationFailureMessage + e.Message;
LogDependencyException(context, log.ErrorLogger(), message);
}
return(provider);
}
