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scripts.go
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scripts.go
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// Copyright (c) 2021 Terminus, Inc.
//
// This program is free software: you can use, redistribute, and/or modify
// it under the terms of the GNU Affero General Public License, version 3
// or later ("AGPL"), as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package migrator
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/pingcap/parser/ast"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"gorm.io/gorm"
"github.com/erda-project/erda/pkg/database/sqllint"
"github.com/erda-project/erda/pkg/database/sqllint/rules"
pygrator2 "github.com/erda-project/erda/pkg/database/sqlparser/pygrator"
)
// Scripts is the set of Module
type Scripts struct {
Workdir string
Dirname string
ServicesNames []string
Services map[string]*Module
rulers []rules.Ruler
markPending bool
destructive int
destructiveText string
}
// NewScripts range the directory
func NewScripts(parameters Parameters) (*Scripts, error) {
var (
modulesNames []string
services = make(map[string]*Module, 0)
)
dirname := filepath.Join(parameters.Workdir(), parameters.MigrationDir())
modulesInfos, err := ioutil.ReadDir(dirname)
if err != nil {
return nil, errors.Wrapf(err, "failed to ReadDir %s", dirname)
}
var (
moduleList = parameters.Modules()
modules = make(map[string]bool)
)
for _, moduleName := range moduleList {
if moduleName != "" {
modules[moduleName] = true
}
}
for _, moduleInfo := range modulesInfos {
if !moduleInfo.IsDir() {
continue
}
// specified modules and this service is in specified modules then to continue
if _, ok := modules[moduleInfo.Name()]; len(modules) > 0 && !ok {
continue
}
var module Module
module.Name = moduleInfo.Name()
modulesNames = append(modulesNames, moduleInfo.Name())
dirname := filepath.Join(parameters.Workdir(), parameters.MigrationDir(), moduleInfo.Name())
serviceDirInfos, err := ioutil.ReadDir(dirname)
if err != nil {
return nil, errors.Wrapf(err, "failed to ReadDir %s", dirname)
}
for _, fileInfo := range serviceDirInfos {
if fileInfo.IsDir() {
continue
}
// read requirements.txt
if strings.EqualFold(fileInfo.Name(), pygrator2.RequirementsFilename) {
module.PythonRequirementsText, err = ioutil.ReadFile(filepath.Join(parameters.Workdir(), parameters.MigrationDir(), moduleInfo.Name(), fileInfo.Name()))
if err != nil {
return nil, err
}
}
// read script (.sql or .py)
if ext := filepath.Ext(fileInfo.Name()); strings.EqualFold(ext, string(ScriptTypeSQL)) || strings.EqualFold(ext, string(ScriptTypePython)) {
script, err := NewScript(parameters.Workdir(), filepath.Join(parameters.MigrationDir(), moduleInfo.Name(), fileInfo.Name()))
if err != nil {
return nil, errors.Wrap(err, "failed to NewScript")
}
module.Scripts = append(module.Scripts, script)
}
}
module.Sort()
services[moduleInfo.Name()] = &module
}
return &Scripts{
Workdir: parameters.Workdir(),
Dirname: parameters.MigrationDir(),
ServicesNames: modulesNames,
Services: services,
rulers: parameters.Rules(),
markPending: false,
destructive: 0,
}, nil
}
func (s *Scripts) Get(serviceName string) ([]*Script, bool) {
module, ok := s.Services[serviceName]
return module.Scripts, ok
}
func (s *Scripts) Lint() error {
if !s.markPending {
return errors.New("scripts did not mark if is pending, please mark it and then do Lint")
}
linter := sqllint.New(s.rulers...)
for moduleName, module := range s.Services {
for _, script := range module.Scripts {
if !script.isBase && script.Pending && script.Type == ScriptTypeSQL {
if err := linter.Input(script.Rawtext, filepath.Join(s.Dirname, moduleName, script.GetName())); err != nil {
return err
}
}
}
}
if len(linter.Errors()) == 0 {
return nil
}
_, _ = fmt.Fprintln(os.Stdout, linter.Report())
for src, es := range linter.Errors() {
logrus.Println(src)
for _, err := range es {
_, _ = fmt.Fprintln(os.Stdout, err)
}
_, _ = fmt.Fprintln(os.Stdout)
}
return errors.New("many lint errors")
}
func (s *Scripts) AlterPermissionLint() error {
for moduleName, module := range s.Services {
tableNames := make(map[string]bool, 0)
for _, script := range module.Scripts {
for _, ddl := range script.DDLNodes() {
switch ddl.(type) {
case *ast.CreateTableStmt:
tableName := ddl.(*ast.CreateTableStmt).Table.Name.String()
tableNames[tableName] = true
case *ast.AlterTableStmt:
tableName := ddl.(*ast.AlterTableStmt).Table.Name.String()
if _, ok := tableNames[tableName]; !ok {
return errors.Errorf("the table tried to alter not exists, may it not created in this module directory. filename: %s, text:\n%s",
filepath.Join(s.Dirname, moduleName, script.GetName()), ddl.Text())
}
default:
continue
}
}
}
}
return nil
}
func (s *Scripts) MarkPending(tx *gorm.DB) {
for moduleName, module := range s.Services {
for i := range module.Scripts {
var record HistoryModel
if tx := tx.Where(map[string]interface{}{
"service_name": moduleName,
"filename": module.Scripts[i].GetName(),
}).
First(&record); tx.Error != nil || tx.RowsAffected == 0 {
module.Scripts[i].Pending = true
} else {
module.Scripts[i].Pending = false
module.Scripts[i].Record = &record
}
}
}
s.markPending = true
}
func (s *Scripts) InstalledChangesLint() error {
if !s.markPending {
return errors.New("scripts did not mark if is pending, please mark it and then do InstalledChangesLint")
}
for moduleName, module := range s.Services {
for _, script := range module.Scripts {
if script.Pending {
continue
}
if script.Checksum() != script.Record.Checksum {
return errors.Errorf("the installed script is changed in local. The service name: %s, script filename: %s",
moduleName, script.GetName())
}
}
}
return nil
}
// SameNameLint lint whether there is same script name in different directories
func (s *Scripts) SameNameLint() error {
// m's key is script file name, value is module name
var m = make(map[string]string)
for curModuleName, module := range s.Services {
for _, script := range module.Scripts {
if moduleName, ok := m[script.GetName()]; ok {
return errors.Errorf("not allowed same script name in different directory, filename: %s, modules: %s, %s",
script.GetName(), curModuleName, moduleName)
} else {
m[script.GetName()] = curModuleName
}
}
}
return nil
}
func (s *Scripts) HasDestructiveOperationInPending() (string, bool) {
if s.destructive == 1 {
return s.destructiveText, true
}
if s.destructive == -1 {
return "", false
}
s.destructive = -1
for _, module := range s.Services {
for _, script := range module.Scripts {
if !script.Pending || script.IsBaseline() {
continue
}
for _, node := range script.Nodes {
switch node.(type) {
case *ast.DropDatabaseStmt, *ast.DropTableStmt, *ast.TruncateTableStmt:
s.destructive = 1
s.destructiveText = node.Text()
return s.destructiveText, true
case *ast.AlterTableStmt:
for _, spec := range node.(*ast.AlterTableStmt).Specs {
switch spec.Tp {
case ast.AlterTableDropColumn:
s.destructive = 1
s.destructiveText = node.Text()
return s.destructiveText, true
}
}
}
}
}
}
return "", false
}