gitroast/models/migrations/migrations.go

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// Copyright 2015 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
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package migrations
import (
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"fmt"
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"strings"
"time"
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"github.com/Unknwon/com"
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"github.com/go-xorm/xorm"
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"github.com/gogits/gogs/modules/log"
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"github.com/gogits/gogs/modules/setting"
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)
const _MIN_DB_VER = 0
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type Migration interface {
Description() string
Migrate(*xorm.Engine) error
}
type migration struct {
description string
migrate func(*xorm.Engine) error
}
func NewMigration(desc string, fn func(*xorm.Engine) error) Migration {
return &migration{desc, fn}
}
func (m *migration) Description() string {
return m.description
}
func (m *migration) Migrate(x *xorm.Engine) error {
return m.migrate(x)
}
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// The version table. Should have only one row with id==1
type Version struct {
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Id int64
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Version int64
}
// This is a sequence of migrations. Add new migrations to the bottom of the list.
// If you want to "retire" a migration, remove it from the top of the list and
// update _MIN_VER_DB accordingly
var migrations = []Migration{
NewMigration("generate collaboration from access", accessToCollaboration), // V0 -> V1
NewMigration("refactor access table to use id's", accessRefactor), // V1 -> V2
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}
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// Migrate database to current version
func Migrate(x *xorm.Engine) error {
if err := x.Sync(new(Version)); err != nil {
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return fmt.Errorf("sync: %v", err)
}
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currentVersion := &Version{Id: 1}
has, err := x.Get(currentVersion)
if err != nil {
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return fmt.Errorf("get: %v", err)
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} else if !has {
// If the user table does not exist it is a fresh installation and we
// can skip all migrations.
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needsMigration, err := x.IsTableExist("user")
if err != nil {
return err
}
if needsMigration {
isEmpty, err := x.IsTableEmpty("user")
if err != nil {
return err
}
// If the user table is empty it is a fresh installation and we can
// skip all migrations.
needsMigration = !isEmpty
}
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if !needsMigration {
currentVersion.Version = int64(_MIN_DB_VER + len(migrations))
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}
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if _, err = x.InsertOne(currentVersion); err != nil {
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return fmt.Errorf("insert: %v", err)
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}
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}
v := currentVersion.Version
for i, m := range migrations[v-_MIN_DB_VER:] {
log.Info("Migration: %s", m.Description())
if err = m.Migrate(x); err != nil {
return fmt.Errorf("do migrate: %v", err)
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}
currentVersion.Version = v + int64(i) + 1
if _, err = x.Id(1).Update(currentVersion); err != nil {
return err
}
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}
return nil
}
func sessionRelease(sess *xorm.Session) {
if !sess.IsCommitedOrRollbacked {
sess.Rollback()
}
sess.Close()
}
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func accessToCollaboration(x *xorm.Engine) error {
type Collaboration struct {
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ID int64 `xorm:"pk autoincr"`
RepoID int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
UserID int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
Created time.Time
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}
x.Sync(new(Collaboration))
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results, err := x.Query("SELECT u.id AS `uid`, a.repo_name AS `repo`, a.mode AS `mode`, a.created as `created` FROM `access` a JOIN `user` u ON a.user_name=u.lower_name")
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if err != nil {
return err
}
sess := x.NewSession()
defer sessionRelease(sess)
if err = sess.Begin(); err != nil {
return err
}
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offset := strings.Split(time.Now().String(), " ")[2]
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for _, result := range results {
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mode := com.StrTo(result["mode"]).MustInt64()
// Collaborators must have write access.
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if mode < 2 {
continue
}
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userID := com.StrTo(result["uid"]).MustInt64()
repoRefName := string(result["repo"])
var created time.Time
switch {
case setting.UseSQLite3:
created, _ = time.Parse(time.RFC3339, string(result["created"]))
case setting.UseMySQL:
created, _ = time.Parse("2006-01-02 15:04:05-0700", string(result["created"])+offset)
case setting.UsePostgreSQL:
created, _ = time.Parse("2006-01-02T15:04:05Z-0700", string(result["created"])+offset)
}
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// find owner of repository
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parts := strings.SplitN(repoRefName, "/", 2)
ownerName := parts[0]
repoName := parts[1]
results, err := sess.Query("SELECT u.id as `uid`, ou.uid as `memberid` FROM `user` u LEFT JOIN org_user ou ON ou.org_id=u.id WHERE u.lower_name=?", ownerName)
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if err != nil {
return err
}
if len(results) < 1 {
continue
}
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ownerID := com.StrTo(results[0]["uid"]).MustInt64()
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if ownerID == userID {
continue
}
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// test if user is member of owning organization
isMember := false
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for _, member := range results {
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memberID := com.StrTo(member["memberid"]).MustInt64()
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// We can skip all cases that a user is member of the owning organization
if memberID == userID {
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isMember = true
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}
}
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if isMember {
continue
}
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results, err = sess.Query("SELECT id FROM `repository` WHERE owner_id=? AND lower_name=?", ownerID, repoName)
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if err != nil {
return err
} else if len(results) < 1 {
continue
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}
collaboration := &Collaboration{
UserID: userID,
RepoID: com.StrTo(results[0]["id"]).MustInt64(),
}
has, err := sess.Get(collaboration)
if err != nil {
return err
} else if has {
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continue
}
collaboration.Created = created
if _, err = sess.InsertOne(collaboration); err != nil {
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return err
}
}
return sess.Commit()
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}
func accessRefactor(x *xorm.Engine) error {
//TODO
return nil
}