fastpastebin/internal/application/config.go
Stanislav N. aka pztrn 5fc6d3a181
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Application superstructure (or supersingleton, if you want).
Got rid of context thing which misleads due to existance of stdlib's
context package.

Also fixed golangci-lint configuration.

Fixes #20.
2022-08-19 21:52:49 +05:00

65 lines
1.5 KiB
Go

package application
import (
"fmt"
"os"
"github.com/rs/zerolog"
"go.dev.pztrn.name/fastpastebin/internal/helpers"
"gopkg.in/yaml.v2"
)
// Config represents configuration structure.
type Config struct {
app *Application
log zerolog.Logger
Database ConfigDatabase `yaml:"database"`
Logging ConfigLogging `yaml:"logging"`
HTTP ConfigHTTP `yaml:"http"`
Pastes ConfigPastes `yaml:"pastes"`
}
func newConfig(app *Application) (*Config, error) {
//nolint:exhaustruct
cfg := &Config{
app: app,
log: app.Log.With().Str("type", "core").Str("name", "configuration").Logger(),
}
if err := cfg.initialize(); err != nil {
return nil, fmt.Errorf("%s: %w", ErrConfigurationError, err)
}
return cfg, nil
}
func (c *Config) initialize() error {
c.log.Info().Msg("Initializing configuration...")
configPathRaw, found := os.LookupEnv("FASTPASTEBIN_CONFIG")
if !found {
return fmt.Errorf("%s: %w", ErrConfigurationLoad, ErrConfigurationPathNotDefined)
}
configPath, err := helpers.NormalizePath(configPathRaw)
if err != nil {
return fmt.Errorf("%s: %w", ErrConfigurationLoad, err)
}
c.log.Info().Str("config path", configPath).Msg("Reading configuration file...")
fileData, err := os.ReadFile(configPath)
if err != nil {
return fmt.Errorf("%s: %w", ErrConfigurationLoad, err)
}
if err := yaml.Unmarshal(fileData, c); err != nil {
return fmt.Errorf("%s: %w", ErrConfigurationLoad, err)
}
c.log.Debug().Msgf("Configuration loaded: %+v", c)
return nil
}