forked from ebhomengo/niki
98 lines
2.1 KiB
Go
98 lines
2.1 KiB
Go
package postgres
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import (
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"context"
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"database/sql"
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"fmt"
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"sync"
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"time"
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querier "git.gocasts.ir/ebhomengo/niki/pkg/query_transaction/sql"
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_ "github.com/jackc/pgx/v5/stdlib"
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)
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type Config struct {
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Host string `koanf:"host"`
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Port int `koanf:"port"`
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User string `koanf:"user"`
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Password string `koanf:"password"`
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DbName string `koanf:"dbName"`
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SSLMode string `koanf:"sslMode"`
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MaxIdleConn int `koanf:"maxIdleConns"`
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MaxOpenConn int `koanf:"maxOpenConns"`
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ConnMaxLifetime int `koanf:"connMaxLifetime"`
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PathOfMigrations string `koanf:"pathOfMigrations"`
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}
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type DB struct {
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config Config
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db *querier.SQLDB
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mu sync.Mutex
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statements map[statementKey]*sql.Stmt
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}
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func (db *DB) Conn() *querier.SQLDB {
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return db.db
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}
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func New(config Config) *DB {
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dsn := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=%s",
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config.Host, config.Port, config.User, config.Password, config.DbName, config.SSLMode)
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db, err := sql.Open("pgx", dsn)
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if err != nil {
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panic(fmt.Errorf("can't open postgres db: %w", err))
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}
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maxIdle := config.MaxIdleConn
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maxOpen := config.MaxOpenConn
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lifetime := time.Duration(config.ConnMaxLifetime) * time.Second
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db.SetMaxIdleConns(maxIdle)
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db.SetMaxOpenConns(maxOpen)
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db.SetConnMaxLifetime(lifetime)
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return &DB{
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config: config,
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db: &querier.SQLDB{DB: db},
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statements: make(map[statementKey]*sql.Stmt),
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}
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}
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func (db *DB) PrepareStatement(ctx context.Context, key statementKey, query string) (*sql.Stmt, error) {
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db.mu.Lock()
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defer db.mu.Unlock()
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if stmt, ok := db.statements[key]; ok {
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return stmt, nil
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}
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stmt, err := db.db.PrepareContext(ctx, query)
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if err != nil {
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return nil, fmt.Errorf("prepare statement %q: %w", key, err)
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}
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db.statements[key] = stmt
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return stmt, nil
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}
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func (db *DB) CloseStatements() error {
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db.mu.Lock()
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defer db.mu.Unlock()
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var lastErr error
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for key, stmt := range db.statements {
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if err := stmt.Close(); err != nil {
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lastErr = err
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}
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delete(db.statements, key)
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}
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return lastErr
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}
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func (db *DB) Close() error {
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return db.db.DB.Close()
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}
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