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backendservice.go
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backendservice.go
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package main
import (
"crypto/tls"
"errors"
"flag"
"fmt"
"github.com/apache/trafficcontrol/lib/go-log"
"github.com/apache/trafficcontrol/lib/go-tc"
"github.com/apache/trafficcontrol/traffic_ops/traffic_ops_golang/api"
"github.com/jmoiron/sqlx"
"github.com/srijeet0406/backendservice/config"
"net/http"
"os"
"time"
)
const readQuery = `SELECT * FROM foo`
type Foo struct {
Name string `json:"name" db:"name"`
ID int `json:"id" db:"id"`
LastUpdated time.Time `json:"lastUpdated" db:"last_updated"`
}
func main() {
dbConfigFileName := flag.String("dbcfg", "", "The database config path")
configFileName := flag.String("cfg", "", "The config file path")
flag.Parse()
if configFileName == nil {
fmt.Errorf("no config file found")
os.Exit(1)
}
fmt.Println(*configFileName)
fmt.Println(*dbConfigFileName)
cfg, err := config.LoadConfig(*configFileName)
if err != nil {
fmt.Fprintf(os.Stderr, "Loading Config: %v\n", err)
os.Exit(1)
}
if e := log.InitCfg(cfg); e != nil {
fmt.Printf("Error initializing loggers: %v\n", e)
fmt.Println(e)
os.Exit(1)
}
if err != nil {
log.Warnln(err)
}
server := &http.Server{
Addr: ":" + cfg.Port,
TLSConfig: cfg.TLSConfig,
ReadTimeout: time.Duration(cfg.ReadTimeout) * time.Second,
ReadHeaderTimeout: time.Duration(cfg.ReadHeaderTimeout) * time.Second,
WriteTimeout: time.Duration(cfg.WriteTimeout) * time.Second,
IdleTimeout: time.Duration(cfg.IdleTimeout) * time.Second,
ErrorLog: log.Error,
}
if server.TLSConfig == nil {
server.TLSConfig = &tls.Config{}
}
server.TLSConfig.InsecureSkipVerify = cfg.Insecure
if cfg.KeyPath == "" {
log.Errorf("key cannot be blank in %s", cfg.ConfigHypnotoad.Listen)
os.Exit(1)
}
if cfg.CertPath == "" {
log.Errorf("cert cannot be blank in %s", cfg.ConfigHypnotoad.Listen)
os.Exit(1)
}
if file, err := os.Open(cfg.CertPath); err != nil {
log.Errorf("cannot open %s for read: %s", cfg.CertPath, err.Error())
os.Exit(1)
} else {
file.Close()
}
if file, err := os.Open(cfg.KeyPath); err != nil {
log.Errorf("cannot open %s for read: %s", cfg.KeyPath, err.Error())
os.Exit(1)
} else {
file.Close()
}
http.HandleFunc( "/api/4.0/foo", Getfoo)
http.HandleFunc( "/api/4.0/foos", func( res http.ResponseWriter, req *http.Request ) {
fmt.Println("in here ", req.URL.Path)
res.Write([]byte("returning from the foos endpoint here\n"))
return
} )
http.HandleFunc( "/", func( res http.ResponseWriter, req *http.Request ) {
alerts := tc.CreateAlerts(tc.ErrorLevel, fmt.Sprintf("The requested path '%s' does not exist.", req.URL.Path))
api.WriteAlerts(res, req, http.StatusNotFound, alerts)
} )
if err := server.ListenAndServeTLS(cfg.CertPath, cfg.KeyPath); err != nil {
log.Errorf("stopping server: %v\n", err)
os.Exit(1)
}
}
func Getfoo(w http.ResponseWriter, r *http.Request) {
fmt.Println("Inside foo here")
db, err := sqlx.Open("postgres", fmt.Sprintf("postgres://%s:%s@%s:%s/%s?sslmode=%s&fallback_application_name=trafficops", "traffic_ops", "twelve", "localhost", "5432", "to_soa_development", "disable"))
if err != nil {
log.Errorf("opening database: %v\n", err)
os.Exit(1)
}
defer db.Close()
fooList := []Foo{}
query := readQuery
rows, err := db.NamedQuery(query, map[string]interface{}{})
if err != nil {
api.HandleErr(w, r, nil, http.StatusInternalServerError, nil, errors.New("querying foo: "+err.Error()))
return
}
defer rows.Close()
for rows.Next() {
var foo Foo
if err = rows.Scan(&foo.ID, &foo.Name, &foo.LastUpdated); err != nil {
api.HandleErr(w, r, nil, http.StatusInternalServerError, nil, errors.New("scanning cdn locks: "+err.Error()))
return
}
fooList = append(fooList, foo)
}
api.WriteResp(w, r, fooList)
}