-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
189 lines (161 loc) · 5.01 KB
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
package main
import (
"context"
"encoding/json"
_ "expvar"
"fmt"
"log"
"net/http"
_ "net/http/pprof"
"os"
"os/signal"
"syscall"
"time"
"github.com/joho/godotenv"
"github.com/pkg/errors"
"github.com/rtbe/clean-rest-api/delivery/web"
"github.com/rtbe/clean-rest-api/domain/usecase"
"github.com/rtbe/clean-rest-api/internal/config"
"github.com/rtbe/clean-rest-api/internal/database"
"github.com/rtbe/clean-rest-api/internal/database/migrate"
"github.com/rtbe/clean-rest-api/internal/logger"
"github.com/rtbe/clean-rest-api/repository/auth"
"github.com/rtbe/clean-rest-api/repository/order"
orderitem "github.com/rtbe/clean-rest-api/repository/order_item"
"github.com/rtbe/clean-rest-api/repository/product"
"github.com/rtbe/clean-rest-api/repository/user"
)
func main() {
logger := logger.NewZapLogger()
if err := run(logger, os.Args[1:]); err != nil {
// os.Exit(1) will be impliciyly executed.
logger.Log("fatal", err.Error())
}
}
func run(logger logger.Logger, args []string) error {
logger.Log("info", "main : server starting...")
if err := godotenv.Load(); err != nil {
return errors.New("error loading .env file")
}
// Set up application configuration.
cfg := config.New()
cfgJSON, err := json.Marshal(cfg)
if err != nil {
return errors.Wrap(err, "error marshalling config")
}
logger.Log("info", fmt.Sprintf("config : %s", cfgJSON))
// Initialize connections to databases.
postgreConfig := database.PostgreConfig{
User: cfg.DbUser,
Password: cfg.DbPassword,
Host: cfg.DbHost,
}
logger.Log("info", "db : establishing connection to PostgreSQL")
postgreDB, err := database.NewPostgreSQL(postgreConfig)
if err != nil {
return err
}
logger.Log("info", "db : connection to PostgreSQL has been established")
defer func() {
if err := postgreDB.Close(); err == nil {
logger.Log("info", "main : database disconnected")
}
}()
// Run database migrations.
logger.Log("info", "db : running migrations")
err = migrate.Do(postgreDB)
if err != nil {
return err
}
mongoConfig := database.MongoConfig{
User: cfg.AuthDbUser,
Password: cfg.AuthDbPassword,
Host: cfg.AuthDbHost,
Name: cfg.AuthDBName,
}
logger.Log("info", "auth db : establishing connection to MongoDB")
mongoDB, err := database.NewMongo(mongoConfig)
if err != nil {
return err
}
logger.Log("info", "auth db : connection to MongoDB has been established")
defer func() {
if err := mongoDB.Client().Disconnect(context.Background()); err == nil {
logger.Log("info", "main : auth database disconnected")
}
}()
// Initialize application layers
userRepo := user.NewPostgreRepo(postgreDB, logger)
userService := usecase.NewUserService(userRepo)
productRepo := product.NewPostgreRepo(postgreDB, logger)
productService := usecase.NewProductService(productRepo)
orderRepo := order.NewPostgreRepo(postgreDB, logger)
orderService := usecase.NewOrderService(orderRepo)
orderItemRepo := orderitem.NewPostgreRepo(postgreDB, logger)
orderItemService := usecase.NewOrderItemService(orderItemRepo)
authRepo := auth.NewMongoRepo(mongoDB, logger)
authService := usecase.NewAuthService(authRepo, userService)
services := usecase.Services{
User: userService,
Product: productService,
Order: orderService,
OrderItem: orderItemService,
Auth: authService,
}
//===============================================Init application server========================================
app := web.NewApp(services, logger)
// Configure application server.
appServer := &http.Server{
Addr: ":" + cfg.APIPort,
Handler: app,
ReadTimeout: 5 * time.Second,
WriteTimeout: 5 * time.Second,
}
// Init server for debugging on default serve mux,
// it will be available at: /debug/pprof
pprofServer := http.Server{
Addr: ":8081",
Handler: http.DefaultServeMux,
ReadTimeout: 5 * time.Second,
WriteTimeout: 5 * time.Second,
}
go func() {
logger.Log("info", fmt.Sprintf(
"main : pprof and documentation server listening on port %s",
cfg.APIPort,
))
if err := pprofServer.ListenAndServe(); err != nil {
log.Printf("error serving debug/pprof: %v ", err)
os.Exit(1)
}
}()
// Gracefull shutdown.
serverErrors := make(chan error)
shutdown := make(chan os.Signal, 1)
signal.Notify(shutdown, os.Interrupt, syscall.SIGTERM)
go func() {
logger.Log("info", fmt.Sprintf(
"main : server listening on port %s",
cfg.APIPort,
))
serverErrors <- appServer.ListenAndServe()
}()
select {
case err := <-serverErrors:
return errors.Wrap(err, "server error")
case sig := <-shutdown:
logger.Log("info", fmt.Sprintf(
"main : %v: start shutdown",
sig,
))
// Give 30 seconds to shut down, then shut down forcefully.
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
appServer.SetKeepAlivesEnabled(false)
if err := appServer.Shutdown(ctx); err != nil {
appServer.Close()
return errors.Wrap(err, "could not stop server gracefully")
}
}
return nil
}