gosora/install/mysql.go

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/*
*
* Gosora MySQL Interface
* Copyright Azareal 2017 - 2020
*
*/
package install
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import (
"bytes"
"database/sql"
"fmt"
"os"
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"io/ioutil"
"path/filepath"
"strconv"
"strings"
"sync"
"github.com/Azareal/Gosora/query_gen"
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_ "github.com/go-sql-driver/mysql"
)
//var dbCollation string = "utf8mb4_general_ci"
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func init() {
adapters["mysql"] = &MysqlInstaller{dbHost: ""}
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}
type MysqlInstaller struct {
db *sql.DB
dbHost string
dbUsername string
dbPassword string
dbName string
dbPort string
}
func (ins *MysqlInstaller) SetConfig(dbHost string, dbUsername string, dbPassword string, dbName string, dbPort string) {
ins.dbHost = dbHost
ins.dbUsername = dbUsername
ins.dbPassword = dbPassword
ins.dbName = dbName
ins.dbPort = dbPort
}
func (ins *MysqlInstaller) Name() string {
return "mysql"
}
func (ins *MysqlInstaller) DefaultPort() string {
return "3306"
}
func (ins *MysqlInstaller) dbExists(dbName string) (bool, error) {
var waste string
err := ins.db.QueryRow("SHOW DATABASES LIKE '" + dbName + "'").Scan(&waste)
if err != nil && err != sql.ErrNoRows {
return false, err
} else if err == sql.ErrNoRows {
return false, nil
}
return true, nil
}
func (ins *MysqlInstaller) InitDatabase() (err error) {
_dbPassword := ins.dbPassword
if _dbPassword != "" {
_dbPassword = ":" + _dbPassword
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}
db, err := sql.Open("mysql", ins.dbUsername+_dbPassword+"@tcp("+ins.dbHost+":"+ins.dbPort+")/")
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if err != nil {
return err
}
// Make sure that the connection is alive..
err = db.Ping()
if err != nil {
return err
}
fmt.Println("Successfully connected to the database")
ins.db = db
ok, err := ins.dbExists(ins.dbName)
if err != nil {
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return err
}
if !ok {
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fmt.Println("Unable to find the database. Attempting to create it")
_, err = db.Exec("CREATE DATABASE IF NOT EXISTS " + ins.dbName)
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if err != nil {
return err
}
fmt.Println("The database was successfully created")
}
/*fmt.Println("Switching to database ", ins.dbName)
_, err = db.Exec("USE " + ins.dbName)
if err != nil {
return err
}*/
db.Close()
db, err = sql.Open("mysql", ins.dbUsername+_dbPassword+"@tcp("+ins.dbHost+":"+ins.dbPort+")/" + ins.dbName)
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if err != nil {
return err
}
// Make sure that the connection is alive..
err = db.Ping()
if err != nil {
return err
}
fmt.Println("Successfully connected to the database")
_, err = db.Exec("SET FOREIGN_KEY_CHECKS = 0;")
if err != nil {
return err
}
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// Ready the query builder
ins.db = db
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qgen.Builder.SetConn(db)
return qgen.Builder.SetAdapter("mysql")
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}
func(ins *MysqlInstaller) createTable(f os.FileInfo) error {
table := strings.TrimPrefix(f.Name(), "query_")
ext := filepath.Ext(table)
if ext != ".sql" {
return nil
}
table = strings.TrimSuffix(table, ext)
// ? - This is mainly here for tests, although it might allow the installer to overwrite a production database, so we might want to proceed with caution
q := "DROP TABLE IF EXISTS `" + table + "`;"
_, err := ins.db.Exec(q)
if err != nil {
fmt.Println("Failed query:", q)
fmt.Println("e:",err)
return err
}
data, err := ioutil.ReadFile("./schema/mysql/" + f.Name())
if err != nil {
return err
}
data = bytes.TrimSpace(data)
_, err = ins.db.Exec(string(data))
if err != nil {
fmt.Println("Failed query:", string(data))
fmt.Println("e:",err)
return err
}
fmt.Printf("Created table '%s'\n", table)
return nil
}
func (ins *MysqlInstaller) TableDefs() (err error) {
fmt.Println("Creating the tables")
files, err := ioutil.ReadDir("./schema/mysql/")
if err != nil {
return err
}
// TODO: Can we reduce the amount of boilerplate here?
after := []string{"activity_stream_matches"}
c1 := make(chan os.FileInfo)
c2 := make(chan os.FileInfo)
e := make(chan error)
var wg sync.WaitGroup
r := func(c chan os.FileInfo) {
wg.Add(1)
for f := range c {
err := ins.createTable(f)
if err != nil {
e <- err
}
}
wg.Done()
}
go r(c1)
go r(c2)
var a []os.FileInfo
Outer:
for i, f := range files {
if !strings.HasPrefix(f.Name(), "query_") {
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continue
}
table := strings.TrimPrefix(f.Name(), "query_")
ext := filepath.Ext(table)
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if ext != ".sql" {
continue
}
table = strings.TrimSuffix(table, ext)
for _, tbl := range after {
if tbl == table {
a = append(a, f)
continue Outer
}
}
if i%2 == 0 {
c1 <- f
} else {
c2 <- f
}
}
close(c1)
close(c2)
wg.Wait()
close(e)
var first error
for err := range e {
if first == nil {
first = err
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}
}
if first != nil {
return first
}
for _, f := range a {
if !strings.HasPrefix(f.Name(), "query_") {
continue
}
err := ins.createTable(f)
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if err != nil {
return err
}
}
_, err = ins.db.Exec("SET FOREIGN_KEY_CHECKS = 1;")
return err
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}
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// ? - Moved this here since it was breaking the installer, we need to add this at some point
/* TODO: Implement the html-attribute setting type before deploying this */
/*INSERT INTO settings(`name`,`content`,`type`) VALUES ('meta_desc','','html-attribute');*/
func (ins *MysqlInstaller) InitialData() error {
fmt.Println("Seeding the tables")
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data, err := ioutil.ReadFile("./schema/mysql/inserts.sql")
if err != nil {
return err
}
data = bytes.TrimSpace(data)
statements := bytes.Split(data, []byte(";"))
for key, sBytes := range statements {
statement := string(sBytes)
if statement == "" {
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continue
}
statement += ";"
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fmt.Println("Executing query #" + strconv.Itoa(key) + " " + statement)
_, err = ins.db.Exec(statement)
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if err != nil {
return err
}
}
return nil
}
func (ins *MysqlInstaller) CreateAdmin() error {
return createAdmin()
}
func (ins *MysqlInstaller) DBHost() string {
return ins.dbHost
}
func (ins *MysqlInstaller) DBUsername() string {
return ins.dbUsername
}
func (ins *MysqlInstaller) DBPassword() string {
return ins.dbPassword
}
func (ins *MysqlInstaller) DBName() string {
return ins.dbName
}
func (ins *MysqlInstaller) DBPort() string {
return ins.dbPort
}