public async Task UpdateAsync(string featureId)
{
if (_processedFeatures.Contains(featureId))
{
return;
}
_processedFeatures.Add(featureId);
if (_logger.IsEnabled(LogLevel.Information))
{
_logger.LogInformation("Updating feature: {0}", featureId);
}
// proceed with dependent features first, whatever the module it's in
var dependencies = _extensionManager
.GetDependentFeatures(
featureId)
.Where(x => x.Id != featureId)
.Select(x => x.Id);
await UpdateAsync(dependencies);
var migrations = GetDataMigrations(featureId);
// apply update methods to each migration class for the module
foreach (var migration in migrations)
{
var schemaBuilder = new SchemaBuilder(_session);
migration.SchemaBuilder = schemaBuilder;
// copy the object for the Linq query
var tempMigration = migration;
// get current version for this migration
var dataMigrationRecord = GetDataMigrationRecordAsync(tempMigration).Result;
var current = 0;
if (dataMigrationRecord != null)
{
current = dataMigrationRecord.Version.Value;
}
else
{
dataMigrationRecord = new Records.DataMigration {
DataMigrationClass = migration.GetType().FullName
};
_dataMigrationRecord.DataMigrations.Add(dataMigrationRecord);
}
try
{
// do we need to call Create() ?
if (current == 0)
{
// try to resolve a Create method
var createMethod = GetCreateMethod(migration);
if (createMethod != null)
{
current = (int)createMethod.Invoke(migration, new object[0]);
}
}
var lookupTable = CreateUpgradeLookupTable(migration);
while (lookupTable.ContainsKey(current))
{
try
{
if (_logger.IsEnabled(LogLevel.Information))
{
_logger.LogInformation("Applying migration for {0} from version {1}.", featureId, current);
}
current = (int)lookupTable[current].Invoke(migration, new object[0]);
}
catch (Exception ex)
{
if (ex.IsFatal())
{
throw;
}
_logger.LogError(0, "An unexpected error occurred while applying migration on {0} from version {1}.", featureId, current);
throw;
}
}
// if current is 0, it means no upgrade/create method was found or succeeded
if (current == 0)
{
return;
}
dataMigrationRecord.Version = current;
}
catch (Exception ex)
{
if (ex.IsFatal())
{
throw;
}
_logger.LogError(0, "Error while running migration version {0} for {1}.", current, featureId);
_session.Cancel();
throw new Exception(T["Error while running migration version {0} for {1}.", current, featureId], ex);
}
finally
{
// Persist data migrations
_session.Save(_dataMigrationRecord);
}
}
}
public async Task UpdateAsync(string featureId)
{
if (_processedFeatures.Contains(featureId))
{
return;
}
_processedFeatures.Add(featureId);
if (_logger.IsEnabled(LogLevel.Information))
{
_logger.LogInformation("Updating feature '{FeatureName}'", featureId);
}
// proceed with dependent features first, whatever the module it's in
var dependencies = _extensionManager
.GetFeatureDependencies(
featureId)
.Where(x => x.Id != featureId)
.Select(x => x.Id);
await UpdateAsync(dependencies);
var migrations = GetDataMigrations(featureId);
// apply update methods to each migration class for the module
foreach (var migration in migrations)
{
var schemaBuilder = new SchemaBuilder(_store.Configuration, await _session.DemandAsync());
migration.SchemaBuilder = schemaBuilder;
// copy the object for the Linq query
var tempMigration = migration;
// get current version for this migration
var dataMigrationRecord = await GetDataMigrationRecordAsync(tempMigration);
var current = 0;
if (dataMigrationRecord != null)
{
// This can be null if a failed create migration has occured and the data migration record was saved.
current = dataMigrationRecord.Version.HasValue ? dataMigrationRecord.Version.Value : current;
}
else
{
dataMigrationRecord = new Records.DataMigration {
DataMigrationClass = migration.GetType().FullName
};
_dataMigrationRecord.DataMigrations.Add(dataMigrationRecord);
}
try
{
// do we need to call Create() ?
if (current == 0)
{
// try to resolve a Create method
var createMethod = GetCreateMethod(migration);
if (createMethod != null)
{
current = (int)createMethod.Invoke(migration, new object[0]);
}
// try to resolve a CreateAsync method
var createAsyncMethod = GetCreateAsyncMethod(migration);
if (createAsyncMethod != null)
{
current = await(Task <int>) createAsyncMethod.Invoke(migration, new object[0]);
}
}
var lookupTable = CreateUpgradeLookupTable(migration);
while (lookupTable.TryGetValue(current, out var methodInfo))
{
if (_logger.IsEnabled(LogLevel.Information))
{
_logger.LogInformation("Applying migration for '{FeatureName}' from version {Version}.", featureId, current);
}
var isAwaitable = methodInfo.ReturnType.GetMethod(nameof(Task.GetAwaiter)) != null;
if (isAwaitable)
{
current = await(Task <int>) methodInfo.Invoke(migration, new object[0]);
}
else
{
current = (int)methodInfo.Invoke(migration, new object[0]);
}
}
// if current is 0, it means no upgrade/create method was found or succeeded
if (current == 0)
{
return;
}
dataMigrationRecord.Version = current;
}
catch (Exception ex)
{
_logger.LogError(ex, "Error while running migration version {Version} for '{FeatureName}'.", current, featureId);
_session.Cancel();
}
finally
{
// Persist data migrations
_session.Save(_dataMigrationRecord);
}
}
}