202 lines
4.8 KiB
Go
202 lines
4.8 KiB
Go
package services
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import (
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"context"
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"database/sql"
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"fmt"
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"entgo.io/ent/dialect"
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entsql "entgo.io/ent/dialect/sql"
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"entgo.io/ent/dialect/sql/schema"
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// Required by ent
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_ "github.com/jackc/pgx/v4/stdlib"
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"github.com/labstack/echo/v4"
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"github.com/labstack/gommon/log"
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"github.com/mikestefanello/pagoda/config"
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"github.com/mikestefanello/pagoda/ent"
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// Require by ent
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_ "github.com/mikestefanello/pagoda/ent/runtime"
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)
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// Container contains all services used by the application and provides an easy way to handle dependency
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// injection including within tests
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type Container struct {
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// Validator stores a validator
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Validator *Validator
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// Web stores the web framework
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Web *echo.Echo
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// Config stores the application configuration
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Config *config.Config
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// Cache contains the cache client
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Cache *CacheClient
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// Database stores the connection to the database
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Database *sql.DB
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// ORM stores a client to the ORM
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ORM *ent.Client
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// Mail stores an email sending client
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Mail *MailClient
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// Auth stores an authentication client
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Auth *AuthClient
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// TemplateRenderer stores a service to easily render and cache templates
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TemplateRenderer *TemplateRenderer
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// Tasks stores the task client
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Tasks *TaskClient
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}
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// NewContainer creates and initializes a new Container
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func NewContainer() *Container {
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c := new(Container)
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c.initConfig()
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c.initValidator()
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c.initWeb()
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c.initCache()
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c.initDatabase()
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c.initORM()
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c.initAuth()
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c.initTemplateRenderer()
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c.initMail()
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c.initTasks()
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return c
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}
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// Shutdown shuts the Container down and disconnects all connections
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func (c *Container) Shutdown() error {
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if err := c.Tasks.Close(); err != nil {
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return err
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}
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if err := c.Cache.Close(); err != nil {
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return err
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}
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if err := c.ORM.Close(); err != nil {
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return err
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}
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if err := c.Database.Close(); err != nil {
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return err
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}
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return nil
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}
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// initConfig initializes configuration
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func (c *Container) initConfig() {
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cfg, err := config.GetConfig()
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if err != nil {
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panic(fmt.Sprintf("failed to load config: %v", err))
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}
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c.Config = &cfg
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}
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// initValidator initializes the validator
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func (c *Container) initValidator() {
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c.Validator = NewValidator()
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}
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// initWeb initializes the web framework
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func (c *Container) initWeb() {
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c.Web = echo.New()
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// Configure logging
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switch c.Config.App.Environment {
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case config.EnvProduction:
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c.Web.Logger.SetLevel(log.WARN)
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default:
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c.Web.Logger.SetLevel(log.DEBUG)
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}
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c.Web.Validator = c.Validator
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}
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// initCache initializes the cache
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func (c *Container) initCache() {
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var err error
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if c.Cache, err = NewCacheClient(c.Config); err != nil {
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panic(err)
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}
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}
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// initDatabase initializes the database
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// If the environment is set to test, the test database will be used and will be dropped, recreated and migrated
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func (c *Container) initDatabase() {
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var err error
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getAddr := func(dbName string) string {
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return fmt.Sprintf("postgresql://%s:%s@%s:%d/%s",
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c.Config.Database.User,
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c.Config.Database.Password,
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c.Config.Database.Hostname,
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c.Config.Database.Port,
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dbName,
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)
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}
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c.Database, err = sql.Open("pgx", getAddr(c.Config.Database.Database))
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if err != nil {
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panic(fmt.Sprintf("failed to connect to database: %v", err))
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}
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// Check if this is a test environment
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if c.Config.App.Environment == config.EnvTest {
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// Drop the test database, ignoring errors in case it doesn't yet exist
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_, _ = c.Database.Exec("DROP DATABASE " + c.Config.Database.TestDatabase)
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// Create the test database
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if _, err = c.Database.Exec("CREATE DATABASE " + c.Config.Database.TestDatabase); err != nil {
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panic(fmt.Sprintf("failed to create test database: %v", err))
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}
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// Connect to the test database
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if err = c.Database.Close(); err != nil {
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panic(fmt.Sprintf("failed to close database connection: %v", err))
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}
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c.Database, err = sql.Open("pgx", getAddr(c.Config.Database.TestDatabase))
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if err != nil {
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panic(fmt.Sprintf("failed to connect to database: %v", err))
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}
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}
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}
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// initORM initializes the ORM
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func (c *Container) initORM() {
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drv := entsql.OpenDB(dialect.Postgres, c.Database)
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c.ORM = ent.NewClient(ent.Driver(drv))
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if err := c.ORM.Schema.Create(context.Background(), schema.WithAtlas(true)); err != nil {
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panic(fmt.Sprintf("failed to create database schema: %v", err))
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}
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}
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// initAuth initializes the authentication client
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func (c *Container) initAuth() {
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c.Auth = NewAuthClient(c.Config, c.ORM)
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}
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// initTemplateRenderer initializes the template renderer
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func (c *Container) initTemplateRenderer() {
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c.TemplateRenderer = NewTemplateRenderer(c.Config)
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}
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// initMail initialize the mail client
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func (c *Container) initMail() {
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var err error
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c.Mail, err = NewMailClient(c.Config, c.TemplateRenderer)
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if err != nil {
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panic(fmt.Sprintf("failed to create mail client: %v", err))
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}
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}
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// initTasks initializes the task client
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func (c *Container) initTasks() {
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c.Tasks = NewTaskClient(c.Config)
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}
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