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db.go
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db.go
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package db
import (
"database/sql"
"errors"
"fmt"
"os"
"path"
"path/filepath"
"regexp"
"strings"
"time"
log "github.com/Sirupsen/logrus"
"github.com/G1itchZero/ZeroGo/utils"
"github.com/Jeffail/gabs"
_ "github.com/mattn/go-sqlite3"
)
type DB struct {
db *sql.DB
schema *gabs.Container
path string
site string
}
func NewDB(site string, schema *gabs.Container, p string) *DB {
dbFile := path.Join(p, schema.S("db_file").Data().(string))
os.MkdirAll(path.Dir(dbFile), 0777)
db, err := sql.Open("sqlite3", dbFile)
if err != nil {
log.Fatal(fmt.Errorf("DB error: %v", err))
}
return &DB{
db: db,
schema: schema,
path: path.Dir(dbFile),
site: site,
}
}
func (db *DB) createJSONTable() {
_, err := db.db.Exec(`
CREATE TABLE IF NOT EXISTS json (json_id INTEGER PRIMARY KEY AUTOINCREMENT, directory VARCHAR(255), file_name VARCHAR(255))`, nil)
if err != nil {
log.Fatal(fmt.Errorf("DB error: %v", err))
}
_, err = db.db.Exec(`
CREATE TABLE IF NOT EXISTS keyvalue (keyvalue_id INTEGER PRIMARY KEY AUTOINCREMENT, key TEXT, value INTEGER, json_id INTEGER)`, nil)
if err != nil {
log.Fatal(fmt.Errorf("DB error: %v", err))
}
}
func (db *DB) addJSON(dir string, filename string) int64 {
name := "json"
keys := []string{"directory", "file_name"}
ph := []string{"?", "?"}
q := fmt.Sprintf("INSERT OR REPLACE INTO %s (%s) values(%s)", name, strings.Join(keys, ", "), strings.Join(ph, ", "))
result, err := db.db.Exec(q, dir, filename)
if err != nil {
log.Fatal(fmt.Errorf("DB error: %v", err))
}
index, _ := result.LastInsertId()
// index, err := db.db.Exec("SELECT json_id from json where directory = ? and file_name = ?", dir, filename)
// if err != nil {
// log.Fatal(fmt.Errorf("DB error: %v", err))
// }
return index
}
func (db *DB) createTables() {
tables := db.schema.S("tables").Data().(map[string]interface{})
for name, t := range tables {
table := t.(map[string]interface{})
var cols []string
for _, col := range table["cols"].([]interface{}) {
c := col.([]interface{})
cols = append(cols, fmt.Sprintf("%s %s", c[0], c[1]))
}
_, err := db.db.Exec(fmt.Sprintf("CREATE TABLE IF NOT EXISTS %s (%s)", name, strings.Join(cols, ", ")), nil)
if err != nil {
log.Fatal(fmt.Errorf("DB error: %v", err))
}
for _, index := range table["indexes"].([]interface{}) {
db.db.Exec(index.(string), nil)
}
}
}
func (db *DB) mapToTable(dataTable string, data *gabs.Container, jid int64) {
for _, p := range data.S(dataTable).Data().([]interface{}) {
post := p.(map[string]interface{})
keys := []string{"json_id"}
ph := []string{"?"}
values := []interface{}{jid}
for key, val := range post {
keys = append(keys, key)
ph = append(ph, "?")
values = append(values, val)
}
q := fmt.Sprintf("INSERT OR REPLACE INTO %s (%s) values(%s)", dataTable, strings.Join(keys, ", "), strings.Join(ph, ", "))
_, err := db.db.Exec(q, values...)
if err != nil {
log.Fatal(fmt.Errorf("DB error: %v", err))
}
}
}
func (db *DB) mapToField(dataField string, data *gabs.Container, jid int64) {
keys := []string{"json_id", "key", "value"}
ph := []string{"?", "?", "?"}
q := fmt.Sprintf("INSERT OR REPLACE INTO %s (%s) values(%s)", "keyvalue", strings.Join(keys, ", "), strings.Join(ph, ", "))
_, err := db.db.Exec(q, jid, dataField, data.S(dataField).Data())
if err != nil {
log.Fatal(fmt.Errorf("DB error: %v", err))
}
}
func (db *DB) Query(q string) (interface{}, error) {
log.Println(q)
if q == "" {
return nil, errors.New("empty query")
}
for db == nil || db.db == nil {
time.Sleep(time.Millisecond * 100)
}
rows, err := db.db.Query(q)
if err != nil {
return "", err
}
defer rows.Close()
columns, err := rows.Columns()
if err != nil {
return "", err
}
count := len(columns)
tableData := make([]map[string]interface{}, 0)
values := make([]interface{}, count)
valuePtrs := make([]interface{}, count)
for rows.Next() {
for i := 0; i < count; i++ {
valuePtrs[i] = &values[i]
}
rows.Scan(valuePtrs...)
entry := make(map[string]interface{})
for i, col := range columns {
var v interface{}
val := values[i]
b, ok := val.([]byte)
if ok {
v = string(b)
} else {
v = val
}
entry[col] = v
}
tableData = append(tableData, entry)
}
log.Println(tableData)
return tableData, nil
}
func (db *DB) Init() {
db.createJSONTable()
db.createTables()
maps := db.schema.S("maps").Data().(map[string]interface{})
for mapRe, dm := range maps {
filepath.Walk(path.Join(utils.GetDataPath(), db.site), func(filepath string, f os.FileInfo, err error) error {
match, _ := regexp.MatchString(mapRe, filepath)
if match {
mapName := filepath
dataMap := dm.(map[string]interface{})
data, err := utils.LoadJSON(mapName)
if err != nil {
log.Fatal(fmt.Errorf("DB match (%s) error: %v", mapName, err))
}
jid := db.addJSON("", strings.Replace(mapName, db.path+"/", "", 1))
if dataMap["to_table"] != nil {
dataTables := (dataMap["to_table"].([]interface{}))
for _, dt := range dataTables {
dataTable := dt.(string)
db.mapToTable(dataTable, data, jid)
}
}
if dataMap["to_keyvalue"] != nil {
dataFields := (dataMap["to_keyvalue"].([]interface{}))
for _, dt := range dataFields {
dataField := dt.(string)
db.mapToField(dataField, data, jid)
}
}
}
return nil
})
}
}