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bee/g_hproseappcode.go
Faissal Elamraoui cf7aef47f0 Implementing the new logging infrastructure
Moved logging to the new logging infrastructure by removing the use of
ColorLog() function. Added more documentation. Also fixed some typos in
comments and function names.
2016-11-13 15:14:48 +01:00

310 lines
9.4 KiB
Go

/**********************************************************\
| |
| hprose |
| |
| Official WebSite: http://www.hprose.com/ |
| http://www.hprose.org/ |
| |
\**********************************************************/
/**********************************************************\
* *
* Build rpc application use Hprose base on beego *
* *
* LastModified: Oct 23, 2014 *
* Author: Liu jian <laoliu@lanmv.com> *
* *
\**********************************************************/
package main
import (
"database/sql"
"fmt"
"os"
"path"
"strings"
_ "github.com/go-sql-driver/mysql"
_ "github.com/lib/pq"
)
func generateHproseAppcode(driver, connStr, level, tables, currpath string) {
var mode byte
switch level {
case "1":
mode = OModel
case "2":
mode = OModel | OController
case "3":
mode = OModel | OController | ORouter
default:
logger.Fatal("Invalid 'level' option. Level must be either \"1\", \"2\" or \"3\"")
}
var selectedTables map[string]bool
if tables != "" {
selectedTables = make(map[string]bool)
for _, v := range strings.Split(tables, ",") {
selectedTables[v] = true
}
}
switch driver {
case "mysql":
case "postgres":
case "sqlite":
logger.Fatal("Generating app code from SQLite database is not supported yet")
default:
logger.Fatalf("Unknown database driver '%s'. Driver must be one of mysql, postgres or sqlite", driver)
}
genHprose(driver, connStr, mode, selectedTables, currpath)
}
// Generate takes table, column and foreign key information from database connection
// and generate corresponding golang source files
func genHprose(dbms, connStr string, mode byte, selectedTableNames map[string]bool, currpath string) {
db, err := sql.Open(dbms, connStr)
if err != nil {
logger.Fatalf("Could not connect to '%s' database using '%s': %s", dbms, connStr, err)
}
defer db.Close()
if trans, ok := dbDriver[dbms]; ok {
logger.Info("Analyzing database tables...")
tableNames := trans.GetTableNames(db)
tables := getTableObjects(tableNames, db, trans)
mvcPath := new(MvcPath)
mvcPath.ModelPath = path.Join(currpath, "models")
createPaths(mode, mvcPath)
pkgPath := getPackagePath(currpath)
writeHproseSourceFiles(pkgPath, tables, mode, mvcPath, selectedTableNames)
} else {
logger.Fatalf("Generating app code from '%s' database is not supported yet", dbms)
}
}
// writeHproseSourceFiles generates source files for model/controller/router
// It will wipe the following directories and recreate them:./models, ./controllers, ./routers
// Newly geneated files will be inside these folders.
func writeHproseSourceFiles(pkgPath string, tables []*Table, mode byte, paths *MvcPath, selectedTables map[string]bool) {
if (OModel & mode) == OModel {
logger.Info("Creating model files...")
writeHproseModelFiles(tables, paths.ModelPath, selectedTables)
}
}
// writeHproseModelFiles generates model files
func writeHproseModelFiles(tables []*Table, mPath string, selectedTables map[string]bool) {
w := NewColorWriter(os.Stdout)
for _, tb := range tables {
// if selectedTables map is not nil and this table is not selected, ignore it
if selectedTables != nil {
if _, selected := selectedTables[tb.Name]; !selected {
continue
}
}
filename := getFileName(tb.Name)
fpath := path.Join(mPath, filename+".go")
var f *os.File
var err error
if isExist(fpath) {
logger.Warnf("'%s' already exists. Do you want to overwrite it? [Yes|No] ", fpath)
if askForConfirmation() {
f, err = os.OpenFile(fpath, os.O_RDWR|os.O_TRUNC, 0666)
if err != nil {
logger.Warnf("%s", err)
continue
}
} else {
logger.Warnf("Skipped create file '%s'", fpath)
continue
}
} else {
f, err = os.OpenFile(fpath, os.O_CREATE|os.O_RDWR, 0666)
if err != nil {
logger.Warnf("%s", err)
continue
}
}
template := ""
if tb.Pk == "" {
template = HproseStructModelTPL
} else {
template = HproseModelTPL
hproseAddFunctions = append(hproseAddFunctions, strings.Replace(HproseAddFunction, "{{modelName}}", camelCase(tb.Name), -1))
}
fileStr := strings.Replace(template, "{{modelStruct}}", tb.String(), 1)
fileStr = strings.Replace(fileStr, "{{modelName}}", camelCase(tb.Name), -1)
// if table contains time field, import time.Time package
timePkg := ""
importTimePkg := ""
if tb.ImportTimePkg {
timePkg = "\"time\"\n"
importTimePkg = "import \"time\"\n"
}
fileStr = strings.Replace(fileStr, "{{timePkg}}", timePkg, -1)
fileStr = strings.Replace(fileStr, "{{importTimePkg}}", importTimePkg, -1)
if _, err := f.WriteString(fileStr); err != nil {
logger.Fatalf("Could not write model file to '%s'", fpath)
}
CloseFile(f)
fmt.Fprintf(w, "\t%s%screate%s\t %s%s\n", "\x1b[32m", "\x1b[1m", "\x1b[21m", fpath, "\x1b[0m")
formatSourceCode(fpath)
}
}
const (
HproseAddFunction = `
// publish about {{modelName}} function
service.AddFunction("Add{{modelName}}", models.Add{{modelName}})
service.AddFunction("Get{{modelName}}ById", models.Get{{modelName}}ById)
service.AddFunction("GetAll{{modelName}}", models.GetAll{{modelName}})
service.AddFunction("Update{{modelName}}ById", models.Update{{modelName}}ById)
service.AddFunction("Delete{{modelName}}", models.Delete{{modelName}})
`
HproseStructModelTPL = `package models
{{importTimePkg}}
{{modelStruct}}
`
HproseModelTPL = `package models
import (
"errors"
"fmt"
"reflect"
"strings"
{{timePkg}}
"github.com/astaxie/beego/orm"
)
{{modelStruct}}
func init() {
orm.RegisterModel(new({{modelName}}))
}
// Add{{modelName}} insert a new {{modelName}} into database and returns
// last inserted Id on success.
func Add{{modelName}}(m *{{modelName}}) (id int64, err error) {
o := orm.NewOrm()
id, err = o.Insert(m)
return
}
// Get{{modelName}}ById retrieves {{modelName}} by Id. Returns error if
// Id doesn't exist
func Get{{modelName}}ById(id int) (v *{{modelName}}, err error) {
o := orm.NewOrm()
v = &{{modelName}}{Id: id}
if err = o.Read(v); err == nil {
return v, nil
}
return nil, err
}
// GetAll{{modelName}} retrieves all {{modelName}} matches certain condition. Returns empty list if
// no records exist
func GetAll{{modelName}}(query map[string]string, fields []string, sortby []string, order []string,
offset int64, limit int64) (ml []interface{}, err error) {
o := orm.NewOrm()
qs := o.QueryTable(new({{modelName}}))
// query k=v
for k, v := range query {
// rewrite dot-notation to Object__Attribute
k = strings.Replace(k, ".", "__", -1)
qs = qs.Filter(k, v)
}
// order by:
var sortFields []string
if len(sortby) != 0 {
if len(sortby) == len(order) {
// 1) for each sort field, there is an associated order
for i, v := range sortby {
orderby := ""
if order[i] == "desc" {
orderby = "-" + v
} else if order[i] == "asc" {
orderby = v
} else {
return nil, errors.New("Error: Invalid order. Must be either [asc|desc]")
}
sortFields = append(sortFields, orderby)
}
qs = qs.OrderBy(sortFields...)
} else if len(sortby) != len(order) && len(order) == 1 {
// 2) there is exactly one order, all the sorted fields will be sorted by this order
for _, v := range sortby {
orderby := ""
if order[0] == "desc" {
orderby = "-" + v
} else if order[0] == "asc" {
orderby = v
} else {
return nil, errors.New("Error: Invalid order. Must be either [asc|desc]")
}
sortFields = append(sortFields, orderby)
}
} else if len(sortby) != len(order) && len(order) != 1 {
return nil, errors.New("Error: 'sortby', 'order' sizes mismatch or 'order' size is not 1")
}
} else {
if len(order) != 0 {
return nil, errors.New("Error: unused 'order' fields")
}
}
var l []{{modelName}}
qs = qs.OrderBy(sortFields...)
if _, err = qs.Limit(limit, offset).All(&l, fields...); err == nil {
if len(fields) == 0 {
for _, v := range l {
ml = append(ml, v)
}
} else {
// trim unused fields
for _, v := range l {
m := make(map[string]interface{})
val := reflect.ValueOf(v)
for _, fname := range fields {
m[fname] = val.FieldByName(fname).Interface()
}
ml = append(ml, m)
}
}
return ml, nil
}
return nil, err
}
// Update{{modelName}} updates {{modelName}} by Id and returns error if
// the record to be updated doesn't exist
func Update{{modelName}}ById(m *{{modelName}}) (err error) {
o := orm.NewOrm()
v := {{modelName}}{Id: m.Id}
// ascertain id exists in the database
if err = o.Read(&v); err == nil {
var num int64
if num, err = o.Update(m); err == nil {
fmt.Println("Number of records updated in database:", num)
}
}
return
}
// Delete{{modelName}} deletes {{modelName}} by Id and returns error if
// the record to be deleted doesn't exist
func Delete{{modelName}}(id int) (err error) {
o := orm.NewOrm()
v := {{modelName}}{Id: id}
// ascertain id exists in the database
if err = o.Read(&v); err == nil {
var num int64
if num, err = o.Delete(&{{modelName}}{Id: id}); err == nil {
fmt.Println("Number of records deleted in database:", num)
}
}
return
}
`
)