NewDatabase creates a database configuration based on the environment variables required. If any env variables are not set or are invalid then this method will throw an error.
()
| 41 | // variables required. If any env variables are not set or are invalid then |
| 42 | // this method will throw an error. |
| 43 | func NewDatabase() (*Database, error) { |
| 44 | username, ok := os.LookupEnv("POSTGRES_USER") |
| 45 | if !ok { |
| 46 | return nil, fmt.Errorf("no POSTGRES_USER env variable set") |
| 47 | } |
| 48 | |
| 49 | password, err := loadPassword() |
| 50 | if err != nil { |
| 51 | return nil, fmt.Errorf("loading password: %w", err) |
| 52 | } |
| 53 | |
| 54 | host, ok := os.LookupEnv("POSTGRES_HOST") |
| 55 | if !ok { |
| 56 | return nil, fmt.Errorf("no POSTGRES_HOST env variable set") |
| 57 | } |
| 58 | |
| 59 | portStr, ok := os.LookupEnv("POSTGRES_PORT") |
| 60 | if !ok { |
| 61 | return nil, fmt.Errorf("no POSTGRES_PORT env variable set") |
| 62 | } |
| 63 | |
| 64 | port, err := strconv.Atoi(portStr) |
| 65 | if err != nil { |
| 66 | return nil, fmt.Errorf("failed to convert port to int: %w", err) |
| 67 | } |
| 68 | |
| 69 | dbname, ok := os.LookupEnv("POSTGRES_DB") |
| 70 | if !ok { |
| 71 | return nil, fmt.Errorf("no POSTGRES_DB env variable set") |
| 72 | } |
| 73 | |
| 74 | sslmode, ok := os.LookupEnv("POSTGRES_SSLMODE") |
| 75 | if !ok { |
| 76 | return nil, fmt.Errorf("no SSLMode env variable set") |
| 77 | } |
| 78 | |
| 79 | config := &Database{ |
| 80 | Username: username, |
| 81 | Password: password, |
| 82 | Host: host, |
| 83 | Port: uint16(port), |
| 84 | DBName: dbname, |
| 85 | SSLMode: sslmode, |
| 86 | } |
| 87 | |
| 88 | err = config.Validate() |
| 89 | if err != nil { |
| 90 | return nil, fmt.Errorf("failed to validate config: %w", err) |
| 91 | } |
| 92 | |
| 93 | return config, nil |
| 94 | } |
| 95 | |
| 96 | // URL generates a database connection url from the configuration fields. |
| 97 | func (c *Database) URL() string { |