gitroast/models/migrations/migrations.go

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package migrations
import (
"errors"
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"strconv"
"strings"
"time"
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"github.com/go-xorm/xorm"
)
type migration func(*xorm.Engine) error
// 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, replace it with "expiredMigration"
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var migrations = []migration{
accessToCollaboration,
}
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// Migrate database to current version
func Migrate(x *xorm.Engine) error {
if err := x.Sync(new(Version)); err != nil {
return err
}
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currentVersion := &Version{Id: 1}
has, err := x.Get(currentVersion)
if err != nil {
return err
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} else if !has {
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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
}
needsMigration = !isEmpty
}
if !needsMigration {
currentVersion.Version = int64(len(migrations))
}
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if _, err = x.InsertOne(currentVersion); err != nil {
return err
}
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}
v := currentVersion.Version
for i, migration := range migrations[v:] {
if err = migration(x); err != nil {
return err
}
currentVersion.Version = v + int64(i) + 1
if _, err = x.Id(1).Update(currentVersion); err != nil {
return err
}
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}
return nil
}
func expiredMigration(x *xorm.Engine) error {
return errors.New("You are migrating from a too old gogs version")
}
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func mustParseInt64(in []byte) int64 {
i, err := strconv.ParseInt(string(in), 10, 64)
if err != nil {
i = 0
}
return i
}
func accessToCollaboration(x *xorm.Engine) error {
type Collaboration struct {
ID int64 `xorm:"pk autoincr"`
RepoID int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
UserID int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
Created time.Time `xorm:"CREATED"`
}
x.Sync(new(Collaboration))
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sql := `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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results, err := x.Query(sql)
if err != nil {
return err
}
for _, result := range results {
userID := mustParseInt64(result["uid"])
repoRefName := string(result["repo"])
mode := mustParseInt64(result["mode"])
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created := result["created"]
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//Collaborators must have write access
if mode < 2 {
continue
}
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// find owner of repository
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parts := strings.SplitN(repoRefName, "/", 2)
ownerName := parts[0]
repoName := parts[1]
sql = `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=?`
results, err := x.Query(sql, ownerName)
if err != nil {
return err
}
if len(results) < 1 {
continue
}
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ownerID := mustParseInt64(results[0]["uid"])
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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 {
memberID := mustParseInt64(member["memberid"])
// 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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sql = `SELECT id FROM repository WHERE owner_id=? AND lower_name=?`
results, err = x.Query(sql, ownerID, repoName)
if err != nil {
return err
}
if len(results) < 1 {
continue
}
repoID := results[0]["id"]
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sql = `INSERT INTO collaboration (user_id, repo_id, created) VALUES (?,?,?)`
_, err = x.Exec(sql, userID, repoID, created)
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if err != nil {
return err
}
}
return nil
}