86 lines
1.9 KiB
Go
86 lines
1.9 KiB
Go
package memdb
|
|
|
|
import "fmt"
|
|
|
|
// DBSchema contains the full database schema used for MemDB
|
|
type DBSchema struct {
|
|
Tables map[string]*TableSchema
|
|
}
|
|
|
|
// Validate is used to validate the database schema
|
|
func (s *DBSchema) Validate() error {
|
|
if s == nil {
|
|
return fmt.Errorf("missing schema")
|
|
}
|
|
if len(s.Tables) == 0 {
|
|
return fmt.Errorf("no tables defined")
|
|
}
|
|
for name, table := range s.Tables {
|
|
if name != table.Name {
|
|
return fmt.Errorf("table name mis-match for '%s'", name)
|
|
}
|
|
if err := table.Validate(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// TableSchema contains the schema for a single table
|
|
type TableSchema struct {
|
|
Name string
|
|
Indexes map[string]*IndexSchema
|
|
}
|
|
|
|
// Validate is used to validate the table schema
|
|
func (s *TableSchema) Validate() error {
|
|
if s.Name == "" {
|
|
return fmt.Errorf("missing table name")
|
|
}
|
|
if len(s.Indexes) == 0 {
|
|
return fmt.Errorf("missing table indexes for '%s'", s.Name)
|
|
}
|
|
if _, ok := s.Indexes["id"]; !ok {
|
|
return fmt.Errorf("must have id index")
|
|
}
|
|
if !s.Indexes["id"].Unique {
|
|
return fmt.Errorf("id index must be unique")
|
|
}
|
|
if _, ok := s.Indexes["id"].Indexer.(SingleIndexer); !ok {
|
|
return fmt.Errorf("id index must be a SingleIndexer")
|
|
}
|
|
for name, index := range s.Indexes {
|
|
if name != index.Name {
|
|
return fmt.Errorf("index name mis-match for '%s'", name)
|
|
}
|
|
if err := index.Validate(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// IndexSchema contains the schema for an index
|
|
type IndexSchema struct {
|
|
Name string
|
|
AllowMissing bool
|
|
Unique bool
|
|
Indexer Indexer
|
|
}
|
|
|
|
func (s *IndexSchema) Validate() error {
|
|
if s.Name == "" {
|
|
return fmt.Errorf("missing index name")
|
|
}
|
|
if s.Indexer == nil {
|
|
return fmt.Errorf("missing index function for '%s'", s.Name)
|
|
}
|
|
switch s.Indexer.(type) {
|
|
case SingleIndexer:
|
|
case MultiIndexer:
|
|
default:
|
|
return fmt.Errorf("indexer for '%s' must be a SingleIndexer or MultiIndexer", s.Name)
|
|
}
|
|
return nil
|
|
}
|