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app.go
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app.go
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package app
import (
"crypto/rand"
_ "embed"
"fmt"
"math/big"
"net/http"
"os"
"github.com/c-jamie/sql-manager/clientlib/account"
"github.com/c-jamie/sql-manager/clientlib/log"
migation "github.com/c-jamie/sql-manager/clientlib/migration"
"github.com/c-jamie/sql-manager/clientlib/request"
"github.com/c-jamie/sql-manager/clientlib/script"
"github.com/c-jamie/sql-manager/clientlib/token"
)
var CLIENT_MODE string
// App represents our application
type App struct {
ServerURL string
CentralURL string
AppVersion string
AuthUrl string
Home string
Token token.Token
Account account.Account
Migration migation.Migration
Script script.Script
}
func getEnv(key, fallback string) string {
value, exists := os.LookupEnv(key)
if !exists {
value = fallback
}
return value
}
// New returns a new App
func New(level string) (*App, error) {
log := log.InitLog(level)
server := getEnv("SQL_MNGR_SERVER", "")
authURL := getEnv("SQL_MNGR_AUTH", "")
home := getEnv("SQL_MNGR_HOME", "")
urlVersion := "v1"
CLIENT_MODE = getEnv("SQL_MNGR_MODE", "")
var err error
if authURL == "" {
return nil, fmt.Errorf("SQL_MNGR_AUTH is not set")
}
if home == "" {
home, err = os.UserHomeDir()
if err != nil {
return nil, fmt.Errorf("unable to find the home dir")
}
}
tok := token.New((server + "/" + urlVersion), home)
scr := script.New((server + "/" + urlVersion))
mig := migation.New((server + "/" + urlVersion))
acc := account.New(authURL + "/" + urlVersion, home)
app := &App{
ServerURL: (server + "/" + urlVersion),
Home: home,
AuthUrl: authURL + "/" + urlVersion,
Token: tok,
Account: acc,
Script: scr,
Migration: mig,
}
token, err := tok.Get()
if err != nil {
return app, nil
} else {
if app.ServerURL == "" {
log.Debug("loading server URL from token:", token.Cloud.URL)
app.ServerURL = token.Cloud.URL + "/" + urlVersion
}
return app, nil
}
}
func (app *App) makeRequest(url string, payload []byte, how string) ([]byte, error) {
client := request.Client{BaseURL: app.ServerURL}
var body []byte
var resp *http.Response
if how == http.MethodPost {
body, resp, _ = client.PostReq(url, payload, true, how)
if resp.StatusCode != http.StatusCreated {
return nil, fmt.Errorf("unable to make request")
}
} else {
body, resp, _ = client.GetReq(url, payload, true)
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("unable to make request")
}
}
return body, nil
}
func (app *App) GetVersion() (string, error) {
return "", nil
}
func (app *App) Server() (string, error) {
url := "/healthcheck"
body, err := app.makeRequest(url, nil, http.MethodGet)
if err != nil {
return "", fmt.Errorf("%s", err)
}
return string(body), nil
}
func (app *App) GenerateRandomString(n int) (string, error) {
const letters = "C123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-"
ret := make([]byte, n)
for i := 0; i < n; i++ {
num, err := rand.Int(rand.Reader, big.NewInt(int64(len(letters))))
if err != nil {
return "", err
}
ret[i] = letters[num.Int64()]
}
return string(ret), nil
}