public void UpdateSchemaIfNecessary()
{
if (storage.SchemaVersion == SchemaVersion)
return;
using (var ticker = new OutputTicker(TimeSpan.FromSeconds(3), () =>
{
log.Info(".");
Console.Write(".");
}, null, () =>
{
log.Info("OK");
Console.Write("OK");
Console.WriteLine();
}))
{
bool lockTaken = false;
try
{
Monitor.TryEnter(UpdateLocker, TimeSpan.FromSeconds(15), ref lockTaken);
if (lockTaken == false)
throw new TimeoutException("Could not take upgrade lock after 15 seconds, probably another database is upgrading itself and we can't interupt it midway. Please try again later");
do
{
var updater = Updaters.FirstOrDefault(update => update.Value.FromSchemaVersion == storage.SchemaVersion);
if (updater == null)
throw new InvalidOperationException(
string.Format(
"The version on disk ({0}) is different that the version supported by this library: {1}{2}You need to migrate the disk version to the library version, alternatively, if the data isn't important, you can delete the file and it will be re-created (with no data) with the library version.",
storage.SchemaVersion, SchemaVersion, Environment.NewLine));
log.Info("Updating schema from version {0}: ", storage.SchemaVersion);
Console.WriteLine("Updating schema from version {0}: ", storage.SchemaVersion);
ticker.Start();
updater.Value.Update(storage, output);
updater.Value.UpdateSchemaVersion(storage, output);
ticker.Stop();
} while (storage.SchemaVersion != SchemaVersion);
}
finally
{
if (lockTaken)
Monitor.Exit(UpdateLocker);
}
}
}
private void SetIdFromDb()
{
try
{
instance.WithDatabase(database, (session, dbid, tx) =>
{
using (var details = new Table(session, dbid, "details", OpenTableGrbit.ReadOnly))
{
Api.JetMove(session, details, JET_Move.First, MoveGrbit.None);
var columnids = Api.GetColumnDictionary(session, details);
var column = Api.RetrieveColumn(session, details, columnids["id"]);
Id = new Guid(column);
var schemaVersion = Api.RetrieveColumnAsString(session, details, columnids["schema_version"]);
if (configuration.Storage.PreventSchemaUpdate || schemaVersion == SchemaCreator.SchemaVersion)
return tx;
using (var ticker = new OutputTicker(TimeSpan.FromSeconds(3), () =>
{
log.Info(".");
Console.Write(".");
}, null, () =>
{
log.Info("OK");
Console.Write("OK");
Console.WriteLine();
}))
{
bool lockTaken = false;
try
{
Monitor.TryEnter(UpdateLocker, TimeSpan.FromSeconds(15), ref lockTaken);
if (lockTaken == false)
throw new TimeoutException("Could not take upgrade lock after 15 seconds, probably another database is upgrading itself and we can't interrupt it midway. Please try again later");
do
{
var updater = Updaters.FirstOrDefault(update => update.Value.FromSchemaVersion == schemaVersion);
if (updater == null)
throw new InvalidOperationException(
string.Format(
"The version on disk ({0}) is different that the version supported by this library: {1}{2}You need to migrate the disk version to the library version, alternatively, if the data isn't important, you can delete the file and it will be re-created (with no data) with the library version.",
schemaVersion, SchemaCreator.SchemaVersion, Environment.NewLine));
log.Info("Updating schema from version {0}: ", schemaVersion);
Console.WriteLine("Updating schema from version {0}: ", schemaVersion);
ticker.Start();
updater.Value.Init(generator, configuration);
updater.Value.Update(session, dbid, Output);
tx.Commit(CommitTransactionGrbit.LazyFlush);
tx = new Transaction(session);
schemaVersion = Api.RetrieveColumnAsString(session, details, columnids["schema_version"]);
ticker.Stop();
} while (schemaVersion != SchemaCreator.SchemaVersion);
return tx;
}
finally
{
if (lockTaken)
Monitor.Exit(UpdateLocker);
}
}
}
});
}
catch (EsentVersionStoreOutOfMemoryException esentOutOfMemoryException)
{
var message = "Schema Update Process for " + database + " Failed due to Esent Out Of Memory Exception!" +
Environment.NewLine +
"This might be caused by exceptionally large files, Consider enlarging the value of Raven/Esent/MaxVerPages (default:512)";
log.Error(message);
Console.WriteLine(message);
throw new InvalidOperationException(message, esentOutOfMemoryException);
}
catch (Exception e)
{
var message = "Could not read db details from disk. It is likely that there is a version difference between the library and the db on the disk." +
Environment.NewLine +
"You need to migrate the disk version to the library version, alternatively, if the data isn't important, you can delete the file and it will be re-created (with no data) with the library version.";
log.Error(message);
Console.WriteLine(message);
throw new InvalidOperationException(
message,
e);
}
}
private void SetIdFromDb()
{
try
{
instance.WithDatabase(database, (session, dbid) =>
{
using (var details = new Table(session, dbid, "details", OpenTableGrbit.ReadOnly))
{
Api.JetMove(session, details, JET_Move.First, MoveGrbit.None);
var columnids = Api.GetColumnDictionary(session, details);
var column = Api.RetrieveColumn(session, details, columnids["id"]);
Id = new Guid(column);
var schemaVersion = Api.RetrieveColumnAsString(session, details, columnids["schema_version"]);
if (schemaVersion == SchemaCreator.SchemaVersion)
return;
using (var ticker = new OutputTicker(TimeSpan.FromSeconds(3), () =>
{
log.Info(".");
Console.Write(".");
}, null, () =>
{
log.Info("OK");
Console.Write("OK");
Console.WriteLine();
}))
{
do
{
var updater = Updaters.FirstOrDefault(update => update.Value.FromSchemaVersion == schemaVersion);
if (updater == null)
throw new InvalidOperationException(
string.Format(
"The version on disk ({0}) is different that the version supported by this library: {1}{2}You need to migrate the disk version to the library version, alternatively, if the data isn't important, you can delete the file and it will be re-created (with no data) with the library version.",
schemaVersion, SchemaCreator.SchemaVersion, Environment.NewLine));
log.Info("Updating schema from version {0}: ", schemaVersion);
Console.WriteLine("Updating schema from version {0}: ", schemaVersion);
ticker.Start();
updater.Value.Init(generator);
updater.Value.Update(session, dbid, Output);
schemaVersion = Api.RetrieveColumnAsString(session, details, columnids["schema_version"]);
ticker.Stop();
} while (schemaVersion != SchemaCreator.SchemaVersion);
}
}
});
}
catch (Exception e)
{
throw new InvalidOperationException(
"Could not read db details from disk. It is likely that there is a version difference between the library and the db on the disk." +
Environment.NewLine +
"You need to migrate the disk version to the library version, alternatively, if the data isn't important, you can delete the file and it will be re-created (with no data) with the library version.",
e);
}
}
