Utilisation d'un serveur Go custom pour le backend au lieu de

super-graph

Malheureusement, super-graph n'a pas tenu les promesses qu'il semblait
annoncer.

Je propose donc de basculer sur un serveur Go classique (via goweb).
L'authentification OpenID Connect étant gérée côté backend et non plus
côté frontend.

internal/config/config.go

@@ -0,0 +1,107 @@
+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 {
+	Log  LogConfig  `yaml:"log"`
+	HTTP HTTPConfig `yaml:"http"`
+	OIDC OIDCConfig `yaml:"oidc"`
+}
+
+// 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"`
+}
+
+type OIDCConfig struct {
+	ClientID              string `yaml:"clientId"  env:"OIDC_CLIENT_ID"`
+	ClientSecret          string `yaml:"clientSecret"  env:"OIDC_CLIENT_SECRET"`
+	IssuerURL             string `ymal:"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"`
+}
+
+func NewDumpDefault() *Config {
+	config := NewDefault()
+	return config
+}
+
+func NewDefault() *Config {
+	return &Config{
+		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",
+		},
+		OIDC: OIDCConfig{
+			IssuerURL:             "http://localhost:4444/",
+			RedirectURL:           "http://localhost:8081/oauth2/callback",
+			PostLogoutRedirectURL: "http://localhost:8081",
+		},
+	}
+}
+
+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
+}