/
database_helper.go
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/
database_helper.go
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package database
import (
"database/sql"
"fmt"
"github.com/Tinyblargon/DemoOnDemand/dod/helper/demo"
"github.com/Tinyblargon/DemoOnDemand/dod/helper/programconfig"
_ "github.com/lib/pq"
)
var db *sql.DB
type UserLinkedList struct {
LinkedList *UserLinkedList
UserName string
BindDn string
}
type Vlan struct {
ID uint
Demo string
Prefix string
}
func New(config programconfig.PostgreSQLConfiguration) (db *sql.DB, err error) {
return sql.Open("postgres", fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=disable", config.Host, config.Port, config.User, config.Password, config.Database))
}
func AddDemoOfUser(db *sql.DB, demoObj *demo.Demo) (err error) {
_, err = db.Exec(`insert into "runningdemos"("username","demoname","demonumber","running") values($1, $2, $3, $4)`, demoObj.User, demoObj.Name, demoObj.ID, false)
return
}
func DeleteDemoOfUser(db *sql.DB, demoObj *demo.Demo) (err error) {
_, err = db.Exec(`delete from "runningdemos" where username=$1 AND demoname=$2 AND demonumber=$3`, demoObj.User, demoObj.Name, demoObj.ID)
return
}
func UpdateDemoOfUser(db *sql.DB, demoObj *demo.Demo, running bool) (err error) {
_, err = db.Exec(`update "runningdemos" set "running"=$1 where username=$2 AND demoname=$3 AND demonumber=$4`, running, demoObj.User, demoObj.Name, demoObj.ID)
return
}
func NumberOfDomosOfUser(db *sql.DB, userName string) (numberOfDemos uint, err error) {
array, err := ListDemosOfUser(db, userName)
numberOfDemos = uint(len(*array))
return
}
type Demo struct {
UserName string `json:"user"`
DemoName string `json:"demo"`
DemoNumber uint `json:"demonumber"`
Running bool `json:"active"`
}
func GetSpecificDemo(db *sql.DB, demoObj demo.Demo) (demo *Demo, err error) {
rows, err := db.Query(`SELECT "username","demoname","demonumber","running" FROM "runningdemos" WHERE username=$1 AND demoname=$2 AND demonumber=$3`, demoObj.User, demoObj.Name, demoObj.ID)
if err != nil {
return
}
demos, err := getDemosFromRows(rows)
if err != nil {
return
}
if demos != nil {
if (*demos)[0] != nil {
demo = (*demos)[0]
}
}
return
}
func ListDemosOfUser(db *sql.DB, userName string) (*[]*Demo, error) {
rows, err := db.Query(`SELECT "username","demoname","demonumber","running" FROM "runningdemos" WHERE username=$1`, userName)
if err != nil {
return nil, err
}
return getDemosFromRows(rows)
}
func ListDemosOfTemplate(db *sql.DB, template string) (*[]*Demo, error) {
rows, err := db.Query(`SELECT "username","demoname","demonumber","running" FROM "runningdemos" WHERE demoname=$1`, template)
if err != nil {
return nil, err
}
return getDemosFromRows(rows)
}
func ListAllDemos(db *sql.DB) (*[]*Demo, error) {
rows, err := db.Query(`SELECT "username","demoname","demonumber","running" FROM "runningdemos"`)
if err != nil {
return nil, err
}
return getDemosFromRows(rows)
}
func getDemosFromRows(rows *sql.Rows) (demos *[]*Demo, err error) {
demoList := make([]*Demo, 0)
for rows.Next() {
demo := new(Demo)
err := rows.Scan(&demo.UserName, &demo.DemoName, &demo.DemoNumber, &demo.Running)
if err != nil {
break
}
demoList = append(demoList, demo)
}
demos = &demoList
rows.Close()
return
}
func ListUsedVlans(db *sql.DB) (*[]Vlan, error) {
rows, err := db.Query(`SELECT "prefix","id","demo" FROM "vlans"`)
if err != nil {
return nil, err
}
return getVlansFromRows(rows)
}
func ListUsedVlansOfDemo(db *sql.DB, demo string) (*[]Vlan, error) {
rows, err := db.Query(`SELECT "prefix","id","demo" FROM "vlans" WHERE demo=$1`, demo)
if err != nil {
return nil, err
}
return getVlansFromRows(rows)
}
func SetVlanInUse(db *sql.DB, id uint, prefix string, demo *demo.Demo) (err error) {
_, err = db.Exec(`INSERT INTO "vlans"("prefix","id","demo") VALUES($1, $2, $3)`, prefix, id, demo.CreateID())
return
}
func DeleteVlanInUse(db *sql.DB, demo string) (err error) {
_, err = db.Exec(`DELETE FROM "vlans" WHERE demo=$1`, demo)
return
}
func getVlansFromRows(rows *sql.Rows) (vlans *[]Vlan, err error) {
vlanList := make([]Vlan, 0)
for rows.Next() {
vlan := Vlan{}
err := rows.Scan(&vlan.Prefix, &vlan.ID, &vlan.Demo)
if err != nil {
break
}
vlanList = append(vlanList, vlan)
}
vlans = &vlanList
rows.Close()
return
}
func CheckTemplateInUse(db *sql.DB, demoName string) (inUse bool, err error) {
rows, err := db.Query(`SELECT "demoname" FROM "runningdemos" WHERE demoname=$1`, demoName)
if err != nil {
return
}
for rows.Next() {
var tmp string
err = rows.Scan(&tmp)
if err != nil {
break
}
inUse = true
break
}
rows.Close()
return
}
func CountTemplateInUse(db *sql.DB, demoName string) (demos uint, err error) {
rows, err := db.Query(`SELECT COUNT(*) FROM "runningdemos" WHERE demoname=$1`, demoName)
if err != nil {
return
}
for rows.Next() {
rows.Scan(&demos)
}
return
}