chore(project): bootstrap project tree

internal/config/config.go

@@ -0,0 +1,127 @@
+package config
+
+import (
+	"io"
+	"io/ioutil"
+	"time"
+
+	"github.com/pkg/errors"
+	"gitlab.com/wpetit/goweb/logger"
+
+	"github.com/caarlos0/env/v6"
+	"gopkg.in/yaml.v2"
+)
+
+type Config struct {
+	Debug    bool           `yaml:"debug" env:"DEBUG"`
+	Log      LogConfig      `yaml:"log"`
+	HTTP     HTTPConfig     `yaml:"http"`
+	OIDC     OIDCConfig     `yaml:"oidc"`
+	Database DatabaseConfig `yaml:"database"`
+}
+
+// NewFromFile retrieves the configuration from the given file
+func NewFromFile(filepath string) (*Config, error) {
+	config := NewDefault()
+
+	data, err := ioutil.ReadFile(filepath)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not read file '%s'", filepath)
+	}
+
+	if err := yaml.Unmarshal(data, config); err != nil {
+		return nil, errors.Wrapf(err, "could not unmarshal configuration")
+	}
+
+	return config, nil
+}
+
+type HTTPConfig struct {
+	Address                 string     `yaml:"address" env:"HTTP_ADDRESS"`
+	CookieAuthenticationKey string     `yaml:"cookieAuthenticationKey" env:"HTTP_COOKIE_AUTHENTICATION_KEY"`
+	CookieEncryptionKey     string     `yaml:"cookieEncryptionKey" env:"HTTP_COOKIE_ENCRYPTION_KEY"`
+	CookieMaxAge            int        `yaml:"cookieMaxAge" env:"HTTP_COOKIE_MAX_AGE"`
+	TemplateDir             string     `yaml:"templateDir" env:"HTTP_TEMPLATE_DIR"`
+	PublicDir               string     `yaml:"publicDir" env:"HTTP_PUBLIC_DIR"`
+	FrontendURL             string     `yaml:"frontendURL" env:"HTTP_FRONTEND_URL"`
+	CORS                    CORSConfig `yaml:"cors"`
+}
+
+type CORSConfig struct {
+	AllowedOrigins   []string `yaml:"allowedOrigins" env:"HTTP_CORS_ALLOWED_ORIGINS"`
+	AllowCredentials bool     `yaml:"allowCredentials" env:"HTTP_CORS_ALLOW_CREDENTIALS"`
+}
+
+type OIDCConfig struct {
+	ClientID              string `yaml:"clientId"  env:"OIDC_CLIENT_ID"`
+	ClientSecret          string `yaml:"clientSecret"  env:"OIDC_CLIENT_SECRET"`
+	IssuerURL             string `yaml:"issuerUrl"  env:"OIDC_ISSUER_URL"`
+	RedirectURL           string `yaml:"redirectUrl"  env:"OIDC_REDIRECT_URL"`
+	PostLogoutRedirectURL string `yaml:"postLogoutRedirectURL"  env:"OIDC_POST_LOGOUT_REDIRECT_URL"`
+}
+
+type LogConfig struct {
+	Level  logger.Level  `yaml:"level"  env:"LOG_LEVEL"`
+	Format logger.Format `yaml:"format" env:"LOG_FORMAT"`
+}
+
+type DatabaseConfig struct {
+	DSN string `yaml:"dsn" env:"DATABASE_DSN"`
+}
+
+func NewDumpDefault() *Config {
+	config := NewDefault()
+	return config
+}
+
+func NewDefault() *Config {
+	return &Config{
+		Debug: false,
+		Log: LogConfig{
+			Level:  logger.LevelInfo,
+			Format: logger.FormatHuman,
+		},
+		HTTP: HTTPConfig{
+			Address:                 ":8081",
+			CookieAuthenticationKey: "",
+			CookieEncryptionKey:     "",
+			CookieMaxAge:            int((time.Hour * 1).Seconds()), // 1 hour
+			TemplateDir:             "template",
+			PublicDir:               "public",
+			FrontendURL:             "http://localhost:8080",
+			CORS: CORSConfig{
+				AllowedOrigins:   []string{"http://localhost:8080"},
+				AllowCredentials: true,
+			},
+		},
+		OIDC: OIDCConfig{
+			IssuerURL:             "http://localhost:4444/",
+			RedirectURL:           "http://localhost:8081/oauth2/callback",
+			PostLogoutRedirectURL: "http://localhost:8081",
+		},
+		Database: DatabaseConfig{
+			DSN: "host=localhost database=guesstimate",
+		},
+	}
+}
+
+func Dump(config *Config, w io.Writer) error {
+	data, err := yaml.Marshal(config)
+	if err != nil {
+		return errors.Wrap(err, "could not dump config")
+	}
+
+	if _, err := w.Write(data); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func WithEnvironment(conf *Config) error {
+	if err := env.Parse(conf); err != nil {
+		return err
+	}
+
+	return nil
+}

internal/config/provider.go

@@ -0,0 +1,9 @@
+package config
+
+import "gitlab.com/wpetit/goweb/service"
+
+func ServiceProvider(config *Config) service.Provider {
+	return func(ctn *service.Container) (interface{}, error) {
+		return config, nil
+	}
+}

internal/config/service.go

@@ -0,0 +1,33 @@
+package config
+
+import (
+	"github.com/pkg/errors"
+	"gitlab.com/wpetit/goweb/service"
+)
+
+const ServiceName service.Name = "config"
+
+// From retrieves the config service in the given container
+func From(container *service.Container) (*Config, error) {
+	service, err := container.Service(ServiceName)
+	if err != nil {
+		return nil, errors.Wrapf(err, "error while retrieving '%s' service", ServiceName)
+	}
+
+	srv, ok := service.(*Config)
+	if !ok {
+		return nil, errors.Errorf("retrieved service is not a valid '%s' service", ServiceName)
+	}
+
+	return srv, nil
+}
+
+// Must retrieves the config service in the given container or panic otherwise
+func Must(container *service.Container) *Config {
+	srv, err := From(container)
+	if err != nil {
+		panic(err)
+	}
+
+	return srv
+}