2d261fde59
* Adding mysql support * Fixing other test cases * Tests passing on mysql * Fix the row number generation * Adding blocks_history table * merging the migrations in one single set of files * Passing mysql tests * Fixing default encoding on mysql * Simplifying things * Removing from the blocks table all deleted blocks * Better indentation * Moving db types to constants to make it less error prone * reducing duplicated code * Removing log line * Now sql tests are running properly in mysql, sqlite and postgres
88 lines
1.7 KiB
Go
88 lines
1.7 KiB
Go
package sqlstore
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import (
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"database/sql"
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"log"
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sq "github.com/Masterminds/squirrel"
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)
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const (
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mysqlDBType = "mysql"
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sqliteDBType = "sqlite3"
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postgresDBType = "postgres"
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)
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// SQLStore is a SQL database.
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type SQLStore struct {
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db *sql.DB
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dbType string
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tablePrefix string
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}
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// New creates a new SQL implementation of the store.
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func New(dbType, connectionString string, tablePrefix string) (*SQLStore, error) {
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log.Println("connectDatabase", dbType, connectionString)
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var err error
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db, err := sql.Open(dbType, connectionString)
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if err != nil {
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log.Print("connectDatabase: ", err)
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return nil, err
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}
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err = db.Ping()
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if err != nil {
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log.Printf(`Database Ping failed: %v`, err)
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return nil, err
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}
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store := &SQLStore{
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db: db,
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dbType: dbType,
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tablePrefix: tablePrefix,
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}
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err = store.Migrate()
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if err != nil {
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log.Printf(`Table creation / migration failed: %v`, err)
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return nil, err
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}
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err = store.InitializeTemplates()
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if err != nil {
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log.Printf(`InitializeTemplates failed: %v`, err)
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return nil, err
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}
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return store, nil
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}
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// Shutdown close the connection with the store.
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func (s *SQLStore) Shutdown() error {
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return s.db.Close()
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}
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func (s *SQLStore) getQueryBuilder() sq.StatementBuilderType {
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builder := sq.StatementBuilder
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if s.dbType == postgresDBType || s.dbType == sqliteDBType {
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builder = builder.PlaceholderFormat(sq.Dollar)
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}
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return builder.RunWith(s.db)
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}
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func (s *SQLStore) escapeField(fieldName string) string {
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if s.dbType == mysqlDBType {
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return "`" + fieldName + "`"
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}
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if s.dbType == postgresDBType || s.dbType == sqliteDBType {
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return "\"" + fieldName + "\""
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}
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return fieldName
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}
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