internal MongoMigrationManager(MongoStorageOptions storageOptions, IMongoDatabase database)
{
_storageOptions = storageOptions;
_database = database;
_schemas = _database.GetCollection <SchemaDto>(storageOptions.Prefix + ".schema");
_migrationRunner = new MongoMigrationRunner(database, storageOptions, _schemas);
}
public MongoMigrationManager(MongoStorageOptions storageOptions, HangfireDbContext dbContext)
{
_storageOptions = storageOptions;
_dbContext = dbContext;
_migrationRunner = new MongoMigrationRunner(dbContext, storageOptions);
var migrateLockCollection = _dbContext.Database.GetCollection <DistributedLockDto>(_migrateLockCollectionName);
_lock = new MongoDistributedLock(nameof(Migrate), TimeSpan.FromSeconds(30), migrateLockCollection,
_storageOptions);
}
public void Migrate(HangfireDbContext dbContext)
{
using (new MongoDistributedLock(nameof(Migrate), TimeSpan.FromSeconds(30), dbContext, _storageOptions))
{
var currentSchema = dbContext.Schema.Find(_ => true).FirstOrDefault();
if (currentSchema == null)
{
// We do not have a schema version yet
// - assume an empty database and run full migrations
var migrationRunner = new MongoMigrationRunner(dbContext, _storageOptions);
migrationRunner.Execute(MongoSchema.None, RequiredSchemaVersion);
return;
}
if (RequiredSchemaVersion < currentSchema.Version)
{
var assemblyName = GetType().GetTypeInfo().Assembly.GetName();
throw new InvalidOperationException(
$"{Environment.NewLine}{assemblyName.Name} version: {assemblyName.Version}, uses a schema prior to the current database." +
$"{Environment.NewLine}Backwards migration is not supported. Please resolve this manually (e.g. by droping the database)." +
$"{Environment.NewLine}Please see https://github.com/sergeyzwezdin/Hangfire.Mongo#migration for further information.");
}
if (RequiredSchemaVersion == currentSchema.Version)
{
// Nothing to migrate - so let's get outa here.
return;
}
IMongoMigrationStrategy migration;
switch (_storageOptions.MigrationOptions.Strategy)
{
case MongoMigrationStrategy.None:
migration = new MongoMigrationStrategyNone();
break;
case MongoMigrationStrategy.Drop:
migration = new MongoMigrationStrategyDrop(dbContext, _storageOptions);
break;
case MongoMigrationStrategy.Migrate:
migration = new MongoMigrationStrategyMigrate(dbContext, _storageOptions);
break;
default:
throw new ArgumentOutOfRangeException($@"Unknown migration strategy: {_storageOptions.MigrationOptions.Strategy}", $@"{nameof(MongoMigrationOptions)}.{nameof(MongoMigrationOptions.Strategy)}");
}
migration.Execute(currentSchema.Version, RequiredSchemaVersion);
}
}
public void Migrate(HangfireDbContext dbContext)
{
// Read the current schema without grabing the migrate lock.
// Chances are that we are on par with the schema.
var currentSchemaVersion = GetCurrentSchema(dbContext);
if (RequiredSchemaVersion == currentSchemaVersion)
{
// Nothing to migrate - so let's get outahere.
return;
}
// We must migrate - so grap the migrate lock and go...
using (new MongoDistributedLock("migrate", TimeSpan.FromSeconds(30), dbContext, _storageOptions))
{
// Read the current schema one more time under lock.
// It might have changed in the time from aquiring
// the lock until we actually got it.
currentSchemaVersion = GetCurrentSchema(dbContext);
if (currentSchemaVersion == RequiredSchemaVersion)
{
// Another migration has brought us up to par.
// We can safely return here.
return;
}
if (RequiredSchemaVersion < currentSchemaVersion)
{
var assemblyName = GetType().GetTypeInfo().Assembly.GetName();
throw new InvalidOperationException(
$"{Environment.NewLine}{assemblyName.Name} version: {assemblyName.Version}, uses a schema prior to the current connection." +
$"{Environment.NewLine}Backwards migration is not supported. Please resolve this manually (e.g. by droping the connection)." +
$"{Environment.NewLine}Please see https://github.com/sergeyzwezdin/Hangfire.Mongo#migration for further information.");
}
if (currentSchemaVersion == MongoSchema.None)
{
// We do not have a schema version yet
// - assume an empty database and run a full migration
var migrationRunner = new MongoMigrationRunner(dbContext, _storageOptions);
migrationRunner.Execute(MongoSchema.None, RequiredSchemaVersion);
return;
}
IMongoMigrationStrategy migration;
switch (_storageOptions.MigrationOptions.Strategy)
{
case MongoMigrationStrategy.None:
migration = new MongoMigrationStrategyNone();
break;
case MongoMigrationStrategy.Drop:
migration = new MongoMigrationStrategyDrop(dbContext, _storageOptions);
break;
case MongoMigrationStrategy.Migrate:
migration = new MongoMigrationStrategyMigrate(dbContext, _storageOptions);
break;
default:
throw new ArgumentOutOfRangeException($@"Unknown migration strategy: {_storageOptions.MigrationOptions.Strategy}", $@"{nameof(MongoMigrationOptions)}.{nameof(MongoMigrationOptions.Strategy)}");
}
migration.Execute(currentSchemaVersion, RequiredSchemaVersion);
}
}
