375 lines
		
	
	
		
			9.8 KiB
		
	
	
	
		
			Go
		
	
	
	
			
		
		
	
	
			375 lines
		
	
	
		
			9.8 KiB
		
	
	
	
		
			Go
		
	
	
	
// Copyright 2015 The Gogs Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package migrations
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import (
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	"fmt"
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	"strings"
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	"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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)
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const _MIN_DB_VER = 0
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type Migration interface {
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	Description() string
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	Migrate(*xorm.Engine) error
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}
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type migration struct {
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	description string
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	migrate     func(*xorm.Engine) error
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}
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func NewMigration(desc string, fn func(*xorm.Engine) error) Migration {
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	return &migration{desc, fn}
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}
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func (m *migration) Description() string {
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	return m.description
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}
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func (m *migration) Migrate(x *xorm.Engine) error {
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	return m.migrate(x)
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}
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// The version table. Should have only one row with id==1
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type Version struct {
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	Id      int64
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	Version int64
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}
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// This is a sequence of migrations. Add new migrations to the bottom of the list.
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// If you want to "retire" a migration, remove it from the top of the list and
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// update _MIN_VER_DB accordingly
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var migrations = []Migration{
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	NewMigration("generate collaboration from access", accessToCollaboration), // V0 -> V1
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	NewMigration("make authorize 4 if team is owners", ownerTeamUpdate),       // V1 -> V2
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	NewMigration("refactor access table to use id's", accessRefactor),         // V2 -> V3
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	NewMigration("generate team-repo from team", teamToTeamRepo),              // V3 -> V4
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}
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// Migrate database to current version
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func Migrate(x *xorm.Engine) error {
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	if err := x.Sync(new(Version)); err != nil {
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		return fmt.Errorf("sync: %v", err)
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	}
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	currentVersion := &Version{Id: 1}
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	has, err := x.Get(currentVersion)
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	if err != nil {
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		return fmt.Errorf("get: %v", err)
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	} else if !has {
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		// If the user table does not exist it is a fresh installation and we
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		// can skip all migrations.
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		needsMigration, err := x.IsTableExist("user")
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		if err != nil {
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			return err
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		}
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		if needsMigration {
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			isEmpty, err := x.IsTableEmpty("user")
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			if err != nil {
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				return err
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			}
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			// If the user table is empty it is a fresh installation and we can
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			// skip all migrations.
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			needsMigration = !isEmpty
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		}
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		if !needsMigration {
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			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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	}
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	v := currentVersion.Version
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	for i, m := range migrations[v-_MIN_DB_VER:] {
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		log.Info("Migration: %s", m.Description())
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		if err = m.Migrate(x); err != nil {
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			return fmt.Errorf("do migrate: %v", err)
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		}
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		currentVersion.Version = v + int64(i) + 1
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		if _, err = x.Id(1).Update(currentVersion); err != nil {
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			return err
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		}
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	}
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	return nil
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}
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func sessionRelease(sess *xorm.Session) {
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	if !sess.IsCommitedOrRollbacked {
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		sess.Rollback()
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	}
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	sess.Close()
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}
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func accessToCollaboration(x *xorm.Engine) (err error) {
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	type Collaboration struct {
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		ID      int64 `xorm:"pk autoincr"`
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		RepoID  int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
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		UserID  int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
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		Created time.Time
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	}
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	if err = x.Sync(new(Collaboration)); err != nil {
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		return fmt.Errorf("sync: %v", err)
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	}
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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 {
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		return err
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	}
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	sess := x.NewSession()
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	defer sessionRelease(sess)
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	if err = sess.Begin(); err != nil {
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		return err
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	}
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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()
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		// Collaborators must have write access.
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		if mode < 2 {
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			continue
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		}
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		userID := com.StrTo(result["uid"]).MustInt64()
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		repoRefName := string(result["repo"])
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		var created time.Time
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		switch {
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		case setting.UseSQLite3:
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			created, _ = time.Parse(time.RFC3339, string(result["created"]))
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		case setting.UseMySQL:
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			created, _ = time.Parse("2006-01-02 15:04:05-0700", string(result["created"])+offset)
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		case setting.UsePostgreSQL:
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			created, _ = time.Parse("2006-01-02T15:04:05Z-0700", string(result["created"])+offset)
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		}
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		// find owner of repository
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		parts := strings.SplitN(repoRefName, "/", 2)
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		ownerName := parts[0]
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		repoName := parts[1]
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		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 {
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			return err
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		}
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		if len(results) < 1 {
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			continue
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		}
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		ownerID := com.StrTo(results[0]["uid"]).MustInt64()
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		if ownerID == userID {
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			continue
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		}
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		// test if user is member of owning organization
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		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
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			if memberID == userID {
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				isMember = true
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			}
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		}
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		if isMember {
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			continue
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		}
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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 {
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			return err
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		} else if len(results) < 1 {
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			continue
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		}
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		collaboration := &Collaboration{
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			UserID: userID,
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			RepoID: com.StrTo(results[0]["id"]).MustInt64(),
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		}
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		has, err := sess.Get(collaboration)
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		if err != nil {
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			return err
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		} else if has {
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			continue
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		}
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		collaboration.Created = created
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		if _, err = sess.InsertOne(collaboration); err != nil {
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			return err
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		}
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	}
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	return sess.Commit()
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}
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func ownerTeamUpdate(x *xorm.Engine) (err error) {
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	if _, err := x.Exec("UPDATE `team` SET authorize=4 WHERE lower_name=?", "owners"); err != nil {
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		return fmt.Errorf("update owner team table: %v", err)
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	}
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	return nil
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}
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func accessRefactor(x *xorm.Engine) (err error) {
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	type (
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		AccessMode int
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		Access     struct {
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			ID     int64 `xorm:"pk autoincr"`
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			UserID int64 `xorm:"UNIQUE(s)"`
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			RepoID int64 `xorm:"UNIQUE(s)"`
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			Mode   AccessMode
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		}
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		UserRepo struct {
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			UserID int64
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			RepoID int64
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		}
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	)
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	// We consiously don't start a session yet as we make only reads for now, no writes
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	accessMap := make(map[UserRepo]AccessMode, 50)
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	results, err := x.Query("SELECT r.id AS `repo_id`, r.is_private AS `is_private`, r.owner_id AS `owner_id`, u.type AS `owner_type` FROM `repository` r LEFT JOIN `user` u ON r.owner_id=u.id")
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	if err != nil {
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		return fmt.Errorf("select repositories: %v", err)
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	}
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	for _, repo := range results {
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		repoID := com.StrTo(repo["repo_id"]).MustInt64()
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		isPrivate := com.StrTo(repo["is_private"]).MustInt() > 0
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		ownerID := com.StrTo(repo["owner_id"]).MustInt64()
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		ownerIsOrganization := com.StrTo(repo["owner_type"]).MustInt() > 0
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		results, err := x.Query("SELECT `user_id` FROM `collaboration` WHERE repo_id=?", repoID)
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		if err != nil {
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			return fmt.Errorf("select collaborators: %v", err)
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		}
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		for _, user := range results {
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			userID := com.StrTo(user["user_id"]).MustInt64()
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			accessMap[UserRepo{userID, repoID}] = 2 // WRITE ACCESS
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		}
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		if !ownerIsOrganization {
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			continue
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		}
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		// The minimum level to add a new access record,
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		// because public repository has implicit open access.
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		minAccessLevel := AccessMode(0)
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		if !isPrivate {
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			minAccessLevel = 1
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		}
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		repoString := "$" + string(repo["repo_id"]) + "|"
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		results, err = x.Query("SELECT `id`,`authorize`,`repo_ids` FROM `team` WHERE org_id=? AND authorize>? ORDER BY `authorize` ASC", ownerID, int(minAccessLevel))
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		if err != nil {
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			return fmt.Errorf("select teams from org: %v", err)
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		}
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		for _, team := range results {
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			if !strings.Contains(string(team["repo_ids"]), repoString) {
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				continue
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			}
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			teamID := com.StrTo(team["id"]).MustInt64()
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			mode := AccessMode(com.StrTo(team["authorize"]).MustInt())
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			results, err := x.Query("SELECT `uid` FROM `team_user` WHERE team_id=?", teamID)
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			if err != nil {
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				return fmt.Errorf("select users from team: %v", err)
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			}
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			for _, user := range results {
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				userID := com.StrTo(user["uid"]).MustInt64()
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				accessMap[UserRepo{userID, repoID}] = mode
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			}
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		}
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	}
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	// Drop table can't be in a session (at least not in sqlite)
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	if _, err = x.Exec("DROP TABLE `access`"); err != nil {
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		return fmt.Errorf("drop access table: %v", err)
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	}
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	// Now we start writing so we make a session
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	sess := x.NewSession()
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	defer sessionRelease(sess)
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	if err = sess.Begin(); err != nil {
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		return err
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	}
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	if err = sess.Sync2(new(Access)); err != nil {
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		return fmt.Errorf("sync: %v", err)
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	}
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	accesses := make([]*Access, 0, len(accessMap))
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	for ur, mode := range accessMap {
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		accesses = append(accesses, &Access{UserID: ur.UserID, RepoID: ur.RepoID, Mode: mode})
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	}
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	if _, err = sess.Insert(accesses); err != nil {
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		return fmt.Errorf("insert accesses: %v", err)
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	}
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	return sess.Commit()
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}
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func teamToTeamRepo(x *xorm.Engine) error {
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	type TeamRepo struct {
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		ID     int64 `xorm:"pk autoincr"`
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		OrgID  int64 `xorm:"INDEX"`
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		TeamID int64 `xorm:"UNIQUE(s)"`
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		RepoID int64 `xorm:"UNIQUE(s)"`
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	}
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	teamRepos := make([]*TeamRepo, 0, 50)
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	results, err := x.Query("SELECT `id`,`org_id`,`repo_ids` FROM `team`")
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	if err != nil {
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		return fmt.Errorf("select teams: %v", err)
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	}
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	for _, team := range results {
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		orgID := com.StrTo(team["org_id"]).MustInt64()
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		teamID := com.StrTo(team["id"]).MustInt64()
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		// #1032: legacy code can have duplicated IDs for same repository.
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		mark := make(map[int64]bool)
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		for _, idStr := range strings.Split(string(team["repo_ids"]), "|") {
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			repoID := com.StrTo(strings.TrimPrefix(idStr, "$")).MustInt64()
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			if repoID == 0 || mark[repoID] {
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				continue
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			}
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			mark[repoID] = true
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			teamRepos = append(teamRepos, &TeamRepo{
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				OrgID:  orgID,
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				TeamID: teamID,
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				RepoID: repoID,
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			})
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		}
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	}
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	sess := x.NewSession()
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	defer sessionRelease(sess)
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	if err = sess.Begin(); err != nil {
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		return err
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	}
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	if err = sess.Sync2(new(TeamRepo)); err != nil {
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		return fmt.Errorf("sync: %v", err)
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	} else if _, err = sess.Insert(teamRepos); err != nil {
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		return fmt.Errorf("insert team-repos: %v", err)
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	}
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	return sess.Commit()
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}
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