40 lines
812 B
Go
40 lines
812 B
Go
package data
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import (
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"database/sql"
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"fmt"
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"sync"
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legacycfg "weatherstation/internal/config"
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_ "github.com/lib/pq"
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)
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var (
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dbOnce sync.Once
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dbInst *sql.DB
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)
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// DB returns a shared Postgres connection opened using legacy internal/config.
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func DB() *sql.DB {
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dbOnce.Do(func() {
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cfg := legacycfg.GetConfig().Database
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connStr := fmt.Sprintf(
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"host=%s port=%d user=%s password=%s dbname=%s sslmode=%s",
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cfg.Host, cfg.Port, cfg.User, cfg.Password, cfg.DBName, cfg.SSLMode,
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)
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d, err := sql.Open("postgres", connStr)
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if err != nil {
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panic(fmt.Errorf("open DB failed: %w", err))
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}
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if err := d.Ping(); err != nil {
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panic(fmt.Errorf("ping DB failed: %w", err))
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}
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dbInst = d
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})
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if dbInst == nil {
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panic("database not initialized: check config and drivers")
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}
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return dbInst
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}
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