public string CreateMigrationScript(string migrationUrn)
{
StringBuilder sb = new StringBuilder();
SchemaController controller = new SchemaController(_graphSchemaService);
var files = _schemaPackageStorageService.GetFiles(migrationUrn);
var f = (from p in files
where p.Key.EndsWith("schema-package.yaml")
select p).SingleOrDefault();
if (string.IsNullOrEmpty(f.Value))
{
throw new Exception($"schema-package.yaml was not found at migration urn. {migrationUrn}");
}
// get sequence of schemas from package to be converted.
var sequence = controller.SchemaSequence(f.Value);
NodeSchema nodeSchema = null;
foreach (var nodeSequence in sequence.Schemas)
{
var schemaFile = (from p in files
where p.Key.EndsWith($"{nodeSequence.Name}.yaml")
select p).SingleOrDefault();
if (string.IsNullOrEmpty(schemaFile.Value))
{
throw new Exception($"{nodeSequence.Name}.yaml wat not found at migration urn {migrationUrn}");
}
try
{
nodeSchema = controller.Deserialize(schemaFile.Value);
}
catch (Exception ex)
{
throw new Exception($"can't deserialize schema ${schemaFile.Key}", ex);
}
sb.AppendLine(_graphSchemaService.CreateScript(nodeSchema));
}
return(sb.ToString());
}
