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bee/g_migration.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

245 lines
6.6 KiB
Go

// Copyright 2013 bee authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package main
import (
"fmt"
"os"
"path"
"strings"
"time"
)
const (
MPath = "migrations"
MDateFormat = "20060102_150405"
DBPath = "database"
)
type DBDriver interface {
generateCreateUp(tableName string) string
generateCreateDown(tableName string) string
}
type mysqlDriver struct{}
func (m mysqlDriver) generateCreateUp(tableName string) string {
upsql := `m.SQL("CREATE TABLE ` + tableName + "(" + m.generateSQLFromFields(fields.String()) + `)");`
return upsql
}
func (m mysqlDriver) generateCreateDown(tableName string) string {
downsql := `m.SQL("DROP TABLE ` + "`" + tableName + "`" + `")`
return downsql
}
func (m mysqlDriver) generateSQLFromFields(fields string) string {
sql, tags := "", ""
fds := strings.Split(fields, ",")
for i, v := range fds {
kv := strings.SplitN(v, ":", 2)
if len(kv) != 2 {
logger.Error("Fields format is wrong. Should be: key:type,key:type " + v)
return ""
}
typ, tag := m.getSQLType(kv[1])
if typ == "" {
logger.Error("Fields format is wrong. Should be: key:type,key:type " + v)
return ""
}
if i == 0 && strings.ToLower(kv[0]) != "id" {
sql += "`id` int(11) NOT NULL AUTO_INCREMENT,"
tags = tags + "PRIMARY KEY (`id`),"
}
sql += "`" + snakeString(kv[0]) + "` " + typ + ","
if tag != "" {
tags = tags + fmt.Sprintf(tag, "`"+snakeString(kv[0])+"`") + ","
}
}
sql = strings.TrimRight(sql+tags, ",")
return sql
}
func (m mysqlDriver) getSQLType(ktype string) (tp, tag string) {
kv := strings.SplitN(ktype, ":", 2)
switch kv[0] {
case "string":
if len(kv) == 2 {
return "varchar(" + kv[1] + ") NOT NULL", ""
}
return "varchar(128) NOT NULL", ""
case "text":
return "longtext NOT NULL", ""
case "auto":
return "int(11) NOT NULL AUTO_INCREMENT", ""
case "pk":
return "int(11) NOT NULL", "PRIMARY KEY (%s)"
case "datetime":
return "datetime NOT NULL", ""
case "int", "int8", "int16", "int32", "int64":
fallthrough
case "uint", "uint8", "uint16", "uint32", "uint64":
return "int(11) DEFAULT NULL", ""
case "bool":
return "tinyint(1) NOT NULL", ""
case "float32", "float64":
return "float NOT NULL", ""
case "float":
return "float NOT NULL", ""
}
return "", ""
}
type postgresqlDriver struct{}
func (m postgresqlDriver) generateCreateUp(tableName string) string {
upsql := `m.SQL("CREATE TABLE ` + tableName + "(" + m.generateSQLFromFields(fields.String()) + `)");`
return upsql
}
func (m postgresqlDriver) generateCreateDown(tableName string) string {
downsql := `m.SQL("DROP TABLE ` + tableName + `")`
return downsql
}
func (m postgresqlDriver) generateSQLFromFields(fields string) string {
sql, tags := "", ""
fds := strings.Split(fields, ",")
for i, v := range fds {
kv := strings.SplitN(v, ":", 2)
if len(kv) != 2 {
logger.Error("Fields format is wrong. Should be: key:type,key:type " + v)
return ""
}
typ, tag := m.getSQLType(kv[1])
if typ == "" {
logger.Error("Fields format is wrong. Should be: key:type,key:type " + v)
return ""
}
if i == 0 && strings.ToLower(kv[0]) != "id" {
sql += "id serial primary key,"
}
sql += snakeString(kv[0]) + " " + typ + ","
if tag != "" {
tags = tags + fmt.Sprintf(tag, snakeString(kv[0])) + ","
}
}
if tags != "" {
sql = strings.TrimRight(sql+" "+tags, ",")
} else {
sql = strings.TrimRight(sql, ",")
}
return sql
}
func (m postgresqlDriver) getSQLType(ktype string) (tp, tag string) {
kv := strings.SplitN(ktype, ":", 2)
switch kv[0] {
case "string":
if len(kv) == 2 {
return "char(" + kv[1] + ") NOT NULL", ""
}
return "TEXT NOT NULL", ""
case "text":
return "TEXT NOT NULL", ""
case "auto", "pk":
return "serial primary key", ""
case "datetime":
return "TIMESTAMP WITHOUT TIME ZONE NOT NULL", ""
case "int", "int8", "int16", "int32", "int64":
fallthrough
case "uint", "uint8", "uint16", "uint32", "uint64":
return "integer DEFAULT NULL", ""
case "bool":
return "boolean NOT NULL", ""
case "float32", "float64", "float":
return "numeric NOT NULL", ""
}
return "", ""
}
func newDBDriver() DBDriver {
switch driver {
case "mysql":
return mysqlDriver{}
case "postgres":
return postgresqlDriver{}
default:
logger.Fatal("Driver not supported")
return nil
}
}
// generateMigration generates migration file template for database schema update.
// The generated file template consists of an up() method for updating schema and
// a down() method for reverting the update.
func generateMigration(mname, upsql, downsql, curpath string) {
w := NewColorWriter(os.Stdout)
migrationFilePath := path.Join(curpath, DBPath, MPath)
if _, err := os.Stat(migrationFilePath); os.IsNotExist(err) {
// create migrations directory
if err := os.MkdirAll(migrationFilePath, 0777); err != nil {
logger.Fatalf("Could not create migration directory: %s", err)
}
}
// create file
today := time.Now().Format(MDateFormat)
fpath := path.Join(migrationFilePath, fmt.Sprintf("%s_%s.go", today, mname))
if f, err := os.OpenFile(fpath, os.O_CREATE|os.O_EXCL|os.O_RDWR, 0666); err == nil {
defer CloseFile(f)
content := strings.Replace(MigrationTPL, "{{StructName}}", camelCase(mname)+"_"+today, -1)
content = strings.Replace(content, "{{CurrTime}}", today, -1)
content = strings.Replace(content, "{{UpSQL}}", upsql, -1)
content = strings.Replace(content, "{{DownSQL}}", downsql, -1)
f.WriteString(content)
// Run 'gofmt' on the generated source code
formatSourceCode(fpath)
fmt.Fprintf(w, "\t%s%screate%s\t %s%s\n", "\x1b[32m", "\x1b[1m", "\x1b[21m", fpath, "\x1b[0m")
} else {
logger.Fatalf("Could not create migration file: %s", err)
}
}
const MigrationTPL = `package main
import (
"github.com/astaxie/beego/migration"
)
// DO NOT MODIFY
type {{StructName}} struct {
migration.Migration
}
// DO NOT MODIFY
func init() {
m := &{{StructName}}{}
m.Created = "{{CurrTime}}"
migration.Register("{{StructName}}", m)
}
// Run the migrations
func (m *{{StructName}}) Up() {
// use m.SQL("CREATE TABLE ...") to make schema update
{{UpSQL}}
}
// Reverse the migrations
func (m *{{StructName}}) Down() {
// use m.SQL("DROP TABLE ...") to reverse schema update
{{DownSQL}}
}
`