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wakapi/main.go
Ferdinand Mütsch 6d3891b398 Resolve #11.
2020-02-20 15:39:56 +01:00

208 lines
6.2 KiB
Go

package main
import (
"crypto/md5"
"encoding/hex"
"log"
"net/http"
"os"
"strconv"
"time"
"github.com/codegangsta/negroni"
"github.com/gorilla/mux"
"github.com/jinzhu/gorm"
"github.com/joho/godotenv"
"github.com/rs/cors"
uuid "github.com/satori/go.uuid"
ini "gopkg.in/ini.v1"
"github.com/n1try/wakapi/middlewares"
"github.com/n1try/wakapi/models"
"github.com/n1try/wakapi/routes"
"github.com/n1try/wakapi/services"
"github.com/n1try/wakapi/utils"
_ "github.com/jinzhu/gorm/dialects/mysql"
)
func readConfig() *models.Config {
if err := godotenv.Load(); err != nil {
log.Fatal(err)
}
env, _ := os.LookupEnv("ENV")
dbUser, valid := os.LookupEnv("WAKAPI_DB_USER")
dbPassword, valid := os.LookupEnv("WAKAPI_DB_PASSWORD")
dbHost, valid := os.LookupEnv("WAKAPI_DB_HOST")
dbName, valid := os.LookupEnv("WAKAPI_DB_NAME")
dbPortStr, valid := os.LookupEnv("WAKAPI_DB_PORT")
dbPort, err := strconv.Atoi(dbPortStr)
if !valid {
log.Fatal("Environment variables missing or invalid.")
}
cfg, err := ini.Load("config.ini")
if err != nil {
log.Fatalf("Fail to read file: %v", err)
}
dbMaxConn := cfg.Section("database").Key("max_connections").MustUint(1)
addr := cfg.Section("server").Key("listen").MustString("127.0.0.1")
port, err := strconv.Atoi(os.Getenv("PORT"))
if err != nil {
port = cfg.Section("server").Key("port").MustInt()
}
// Read custom languages
customLangs := make(map[string]string)
languageKeys := cfg.Section("languages").Keys()
for _, k := range languageKeys {
customLangs[k.Name()] = k.MustString("unknown")
}
return &models.Config{
Env: env,
Port: port,
Addr: addr,
DbHost: dbHost,
DbPort: uint(dbPort),
DbUser: dbUser,
DbPassword: dbPassword,
DbName: dbName,
DbDialect: "mysql",
DbMaxConn: dbMaxConn,
CustomLanguages: customLangs,
}
}
func main() {
// Read Config
config := readConfig()
// Connect to database
db, err := gorm.Open(config.DbDialect, utils.MakeConnectionString(config))
db.LogMode(false)
db.DB().SetMaxIdleConns(int(config.DbMaxConn))
db.DB().SetMaxOpenConns(int(config.DbMaxConn))
if err != nil {
log.Fatal("Could not connect to database.")
}
defer db.Close()
// Migrate database schema
db.AutoMigrate(&models.User{})
db.AutoMigrate(&models.Alias{})
db.AutoMigrate(&models.Summary{})
db.AutoMigrate(&models.SummaryItem{})
db.AutoMigrate(&models.Heartbeat{}).AddForeignKey("user_id", "users(id)", "RESTRICT", "RESTRICT")
db.AutoMigrate(&models.SummaryItem{}).AddForeignKey("summary_id", "summaries(id)", "CASCADE", "CASCADE")
// Custom migrations and initial data
addDefaultUser(db, config)
migrateLanguages(db, config)
// Services
aliasSrvc := &services.AliasService{Config: config, Db: db}
heartbeatSrvc := &services.HeartbeatService{Config: config, Db: db}
userSrvc := &services.UserService{Config: config, Db: db}
summarySrvc := &services.SummaryService{Config: config, Db: db, HeartbeatService: heartbeatSrvc, AliasService: aliasSrvc}
aggregationSrvc := &services.AggregationService{Config: config, Db: db, UserService: userSrvc, SummaryService: summarySrvc, HeartbeatService: heartbeatSrvc}
services := []services.Initializable{aliasSrvc, heartbeatSrvc, summarySrvc, userSrvc, aggregationSrvc}
for _, s := range services {
s.Init()
}
// Aggregate heartbeats to summaries and persist them
go aggregationSrvc.Schedule()
// Handlers
heartbeatHandler := &routes.HeartbeatHandler{HeartbeatSrvc: heartbeatSrvc}
summaryHandler := &routes.SummaryHandler{SummarySrvc: summarySrvc}
// Middlewares
authenticateMiddleware := &middlewares.AuthenticateMiddleware{UserSrvc: userSrvc}
basicAuthMiddleware := &middlewares.RequireBasicAuthMiddleware{}
corsMiddleware := cors.New(cors.Options{
AllowedOrigins: []string{"*"},
AllowedHeaders: []string{"*"},
Debug: false,
})
// Setup Routing
router := mux.NewRouter()
mainRouter := mux.NewRouter().PathPrefix("").Subrouter()
apiRouter := mux.NewRouter().PathPrefix("/api").Subrouter()
// Main Routes
index := mainRouter.Path("/").Subrouter()
index.Methods(http.MethodGet).Path("/").HandlerFunc(summaryHandler.Index)
// API Routes
heartbeats := apiRouter.Path("/heartbeat").Subrouter()
heartbeats.Methods(http.MethodPost).HandlerFunc(heartbeatHandler.Post)
// Static Routes
router.PathPrefix("/assets").Handler(negroni.Classic().With(negroni.Wrap(http.FileServer(http.Dir("./static")))))
aggreagations := apiRouter.Path("/summary").Subrouter()
aggreagations.Methods(http.MethodGet).HandlerFunc(summaryHandler.Get)
// Sub-Routes Setup
router.PathPrefix("/").Handler(negroni.Classic().
With(negroni.HandlerFunc(basicAuthMiddleware.Handle),
negroni.HandlerFunc(authenticateMiddleware.Handle),
negroni.Wrap(mainRouter),
))
router.PathPrefix("/api").Handler(negroni.Classic().
With(corsMiddleware).
With(
negroni.HandlerFunc(authenticateMiddleware.Handle),
negroni.Wrap(apiRouter),
))
// Listen HTTP
portString := config.Addr + ":" + strconv.Itoa(config.Port)
s := &http.Server{
Handler: router,
Addr: portString,
ReadTimeout: 10 * time.Second,
WriteTimeout: 10 * time.Second,
}
log.Printf("Listening on %+s\n", portString)
s.ListenAndServe()
}
func migrateLanguages(db *gorm.DB, cfg *models.Config) {
for k, v := range cfg.CustomLanguages {
result := db.Model(models.Heartbeat{}).
Where("language = ?", "").
Where("entity LIKE ?", "%."+k).
Updates(models.Heartbeat{Language: v})
if result.Error != nil {
log.Fatal(result.Error)
}
if result.RowsAffected > 0 {
log.Printf("Migrated %+v rows for custom language %+s.\n", result.RowsAffected, k)
}
}
}
func addDefaultUser(db *gorm.DB, cfg *models.Config) {
pw := md5.Sum([]byte(models.DefaultPassword))
pwString := hex.EncodeToString(pw[:])
apiKey := uuid.NewV4().String()
u := &models.User{ID: models.DefaultUser, Password: pwString, ApiKey: apiKey}
result := db.FirstOrCreate(u, &models.User{ID: u.ID})
if result.Error != nil {
log.Println("Unable to create default user.")
log.Fatal(result.Error)
}
if result.RowsAffected > 0 {
log.Printf("Created default user '%s' with password '%s' and API key '%s'.\n", u.ID, models.DefaultPassword, u.ApiKey)
}
}