95 lines
2.4 KiB
Go
Executable file
95 lines
2.4 KiB
Go
Executable file
package database
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import (
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"database/sql"
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"fmt"
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"log"
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"os"
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_ "github.com/lib/pq"
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)
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var DB *sql.DB
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func InitDB() {
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var err error
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host := os.Getenv("DB_HOST")
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if host == "" {
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log.Fatal("DB_HOST environment variable not set")
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}
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user := os.Getenv("DB_USER")
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if user == "" {
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log.Fatal("DB_USER environment variable not set")
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}
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password := os.Getenv("DB_PASSWORD")
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if password == "" {
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log.Fatal("DB_PASSWORD environment variable not set")
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}
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dbname := os.Getenv("DB_NAME")
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if dbname == "" {
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log.Fatal("DB_NAME environment variable not set")
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}
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port := os.Getenv("DB_PORT")
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if port == "" {
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port = "5432"
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}
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connStr := fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=disable",
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host, port, user, password, dbname)
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DB, err = sql.Open("postgres", connStr)
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if err != nil {
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log.Fatalf("Error opening database: %v", err)
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}
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if err = DB.Ping(); err != nil {
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log.Fatalf("Error connecting to database: %v", err)
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}
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log.Println("Successfully connected to the database")
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}
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func RunMigrations() {
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files, err := os.ReadDir("migrations")
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if err != nil {
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// Try fallback to relative path if running from cmd/api
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files, err = os.ReadDir("../../migrations")
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if err != nil {
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log.Printf("Warning: Could not list migrations directory: %v", err)
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return
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}
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}
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// Sort files by name to ensure order (001, 002, ...)
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// ReadDir returns sorted by name automatically, but let's be safe if logic changes?
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// Actually ReadDir result is sorted by filename.
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for _, file := range files {
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if file.IsDir() {
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continue
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}
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log.Printf("Running migration: %s", file.Name())
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content, err := os.ReadFile("migrations/" + file.Name())
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if err != nil {
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// Try fallback
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content, err = os.ReadFile("../../migrations/" + file.Name())
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if err != nil {
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log.Fatalf("Error reading migration file %s: %v", file.Name(), err)
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}
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}
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_, err = DB.Exec(string(content))
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if err != nil {
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// Log warning but don't crash on "already exists" errors if possible,
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// but pure SQL Exec might fail hard.
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// Given the SQL files use IF NOT EXISTS, we should be fine.
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// If one fails, it might be syntax.
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log.Printf("Error running migration %s: %v", file.Name(), err)
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// Continue or Fail? User wants robustness. Let's Warn and continue for now to avoid single failure blocking all
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} else {
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log.Printf("Migration %s executed successfully", file.Name())
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}
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}
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log.Println("All migrations processed")
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}
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