forgejo-federation/models/migrations/migrations.go
zeripath 4979f15c3f
Add configurable Trust Models (#11712)
* Add configurable Trust Models

Gitea's default signature verification model differs from GitHub. GitHub
uses signatures to verify that the committer is who they say they are -
meaning that when GitHub makes a signed commit it must be the committer.
The GitHub model prevents re-publishing of commits after revocation of a
key and prevents re-signing of other people's commits to create a
completely trusted repository signed by one key or a set of trusted
keys.

The default behaviour of Gitea in contrast is to always display the
avatar and information related to a signature. This allows signatures to
be decoupled from the committer. That being said, allowing arbitary
users to present other peoples commits as theirs is not necessarily
desired therefore we have a trust model whereby signatures from
collaborators are marked trusted, signatures matching the commit line
are marked untrusted and signatures that match a user in the db but not
the committer line are marked unmatched.

The problem with this model is that this conflicts with Github therefore
we need to provide an option to allow users to choose the Github model
should they wish to.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Adjust locale strings

Signed-off-by: Andrew Thornton <art27@cantab.net>

* as per @6543

Co-authored-by: 6543 <6543@obermui.de>

* Update models/gpg_key.go

* Add migration for repository

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2020-09-20 00:44:55 +08:00

701 lines
25 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2017 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package migrations
import (
"fmt"
"reflect"
"regexp"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"xorm.io/xorm"
)
const minDBVersion = 70 // Gitea 1.5.3
// Migration describes on migration from lower version to high version
type Migration interface {
Description() string
Migrate(*xorm.Engine) error
}
type migration struct {
description string
migrate func(*xorm.Engine) error
}
// NewMigration creates a new migration
func NewMigration(desc string, fn func(*xorm.Engine) error) Migration {
return &migration{desc, fn}
}
// Description returns the migration's description
func (m *migration) Description() string {
return m.description
}
// Migrate executes the migration
func (m *migration) Migrate(x *xorm.Engine) error {
return m.migrate(x)
}
// Version describes the version table. Should have only one row with id==1
type Version struct {
ID int64 `xorm:"pk autoincr"`
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 minDBVersion accordingly
var migrations = []Migration{
// Gitea 1.5.3 ends at v70
// v70 -> v71
NewMigration("add issue_dependencies", addIssueDependencies),
// v71 -> v72
NewMigration("protect each scratch token", addScratchHash),
// v72 -> v73
NewMigration("add review", addReview),
// Gitea 1.6.4 ends at v73
// v73 -> v74
NewMigration("add must_change_password column for users table", addMustChangePassword),
// v74 -> v75
NewMigration("add approval whitelists to protected branches", addApprovalWhitelistsToProtectedBranches),
// v75 -> v76
NewMigration("clear nonused data which not deleted when user was deleted", clearNonusedData),
// Gitea 1.7.6 ends at v76
// v76 -> v77
NewMigration("add pull request rebase with merge commit", addPullRequestRebaseWithMerge),
// v77 -> v78
NewMigration("add theme to users", addUserDefaultTheme),
// v78 -> v79
NewMigration("rename repo is_bare to repo is_empty", renameRepoIsBareToIsEmpty),
// v79 -> v80
NewMigration("add can close issues via commit in any branch", addCanCloseIssuesViaCommitInAnyBranch),
// v80 -> v81
NewMigration("add is locked to issues", addIsLockedToIssues),
// v81 -> v82
NewMigration("update U2F counter type", changeU2FCounterType),
// Gitea 1.8.3 ends at v82
// v82 -> v83
NewMigration("hot fix for wrong release sha1 on release table", fixReleaseSha1OnReleaseTable),
// v83 -> v84
NewMigration("add uploader id for table attachment", addUploaderIDForAttachment),
// v84 -> v85
NewMigration("add table to store original imported gpg keys", addGPGKeyImport),
// v85 -> v86
NewMigration("hash application token", hashAppToken),
// v86 -> v87
NewMigration("add http method to webhook", addHTTPMethodToWebhook),
// v87 -> v88
NewMigration("add avatar field to repository", addAvatarFieldToRepository),
// Gitea 1.9.6 ends at v88
// v88 -> v89
NewMigration("add commit status context field to commit_status", addCommitStatusContext),
// v89 -> v90
NewMigration("add original author/url migration info to issues, comments, and repo ", addOriginalMigrationInfo),
// v90 -> v91
NewMigration("change length of some repository columns", changeSomeColumnsLengthOfRepo),
// v91 -> v92
NewMigration("add index on owner_id of repository and type, review_id of comment", addIndexOnRepositoryAndComment),
// v92 -> v93
NewMigration("remove orphaned repository index statuses", removeLingeringIndexStatus),
// v93 -> v94
NewMigration("add email notification enabled preference to user", addEmailNotificationEnabledToUser),
// v94 -> v95
NewMigration("add enable_status_check, status_check_contexts to protected_branch", addStatusCheckColumnsForProtectedBranches),
// v95 -> v96
NewMigration("add table columns for cross referencing issues", addCrossReferenceColumns),
// v96 -> v97
NewMigration("delete orphaned attachments", deleteOrphanedAttachments),
// v97 -> v98
NewMigration("add repo_admin_change_team_access to user", addRepoAdminChangeTeamAccessColumnForUser),
// v98 -> v99
NewMigration("add original author name and id on migrated release", addOriginalAuthorOnMigratedReleases),
// Gitea 1.10.3 ends at v99
// v99 -> v100
NewMigration("add task table and status column for repository table", addTaskTable),
// v100 -> v101
NewMigration("update migration repositories' service type", updateMigrationServiceTypes),
// v101 -> v102
NewMigration("change length of some external login users columns", changeSomeColumnsLengthOfExternalLoginUser),
// v102 -> v103
NewMigration("update migration repositories' service type", dropColumnHeadUserNameOnPullRequest),
// v103 -> v104
NewMigration("Add WhitelistDeployKeys to protected branch", addWhitelistDeployKeysToBranches),
// v104 -> v105
NewMigration("remove unnecessary columns from label", removeLabelUneededCols),
// v105 -> v106
NewMigration("add includes_all_repositories to teams", addTeamIncludesAllRepositories),
// v106 -> v107
NewMigration("add column `mode` to table watch", addModeColumnToWatch),
// v107 -> v108
NewMigration("Add template options to repository", addTemplateToRepo),
// v108 -> v109
NewMigration("Add comment_id on table notification", addCommentIDOnNotification),
// v109 -> v110
NewMigration("add can_create_org_repo to team", addCanCreateOrgRepoColumnForTeam),
// v110 -> v111
NewMigration("change review content type to text", changeReviewContentToText),
// v111 -> v112
NewMigration("update branch protection for can push and whitelist enable", addBranchProtectionCanPushAndEnableWhitelist),
// v112 -> v113
NewMigration("remove release attachments which repository deleted", removeAttachmentMissedRepo),
// v113 -> v114
NewMigration("new feature: change target branch of pull requests", featureChangeTargetBranch),
// v114 -> v115
NewMigration("Remove authentication credentials from stored URL", sanitizeOriginalURL),
// v115 -> v116
NewMigration("add user_id prefix to existing user avatar name", renameExistingUserAvatarName),
// v116 -> v117
NewMigration("Extend TrackedTimes", extendTrackedTimes),
// v117 -> v118
NewMigration("Add block on rejected reviews branch protection", addBlockOnRejectedReviews),
// v118 -> v119
NewMigration("Add commit id and stale to reviews", addReviewCommitAndStale),
// v119 -> v120
NewMigration("Fix migrated repositories' git service type", fixMigratedRepositoryServiceType),
// v120 -> v121
NewMigration("Add owner_name on table repository", addOwnerNameOnRepository),
// v121 -> v122
NewMigration("add is_restricted column for users table", addIsRestricted),
// v122 -> v123
NewMigration("Add Require Signed Commits to ProtectedBranch", addRequireSignedCommits),
// v123 -> v124
NewMigration("Add original informations for reactions", addReactionOriginals),
// v124 -> v125
NewMigration("Add columns to user and repository", addUserRepoMissingColumns),
// v125 -> v126
NewMigration("Add some columns on review for migration", addReviewMigrateInfo),
// v126 -> v127
NewMigration("Fix topic repository count", fixTopicRepositoryCount),
// v127 -> v128
NewMigration("add repository code language statistics", addLanguageStats),
// v128 -> v129
NewMigration("fix merge base for pull requests", fixMergeBase),
// v129 -> v130
NewMigration("remove dependencies from deleted repositories", purgeUnusedDependencies),
// v130 -> v131
NewMigration("Expand webhooks for more granularity", expandWebhooks),
// v131 -> v132
NewMigration("Add IsSystemWebhook column to webhooks table", addSystemWebhookColumn),
// v132 -> v133
NewMigration("Add Branch Protection Protected Files Column", addBranchProtectionProtectedFilesColumn),
// v133 -> v134
NewMigration("Add EmailHash Table", addEmailHashTable),
// v134 -> v135
NewMigration("Refix merge base for merged pull requests", refixMergeBase),
// v135 -> v136
NewMigration("Add OrgID column to Labels table", addOrgIDLabelColumn),
// v136 -> v137
NewMigration("Add CommitsAhead and CommitsBehind Column to PullRequest Table", addCommitDivergenceToPulls),
// v137 -> v138
NewMigration("Add Branch Protection Block Outdated Branch", addBlockOnOutdatedBranch),
// v138 -> v139
NewMigration("Add ResolveDoerID to Comment table", addResolveDoerIDCommentColumn),
// v139 -> v140
NewMigration("prepend refs/heads/ to issue refs", prependRefsHeadsToIssueRefs),
// v140 -> v141
NewMigration("Save detected language file size to database instead of percent", fixLanguageStatsToSaveSize),
// v141 -> v142
NewMigration("Add KeepActivityPrivate to User table", addKeepActivityPrivateUserColumn),
// v142 -> v143
NewMigration("Ensure Repository.IsArchived is not null", setIsArchivedToFalse),
// v143 -> v144
NewMigration("recalculate Stars number for all user", recalculateStars),
// v144 -> v145
NewMigration("update Matrix Webhook http method to 'PUT'", updateMatrixWebhookHTTPMethod),
// v145 -> v146
NewMigration("Increase Language field to 50 in LanguageStats", increaseLanguageField),
// v146 -> v147
NewMigration("Add projects info to repository table", addProjectsInfo),
// v147 -> v148
NewMigration("create review for 0 review id code comments", createReviewsForCodeComments),
// v148 -> v149
NewMigration("remove issue dependency comments who refer to non existing issues", purgeInvalidDependenciesComments),
// v149 -> v150
NewMigration("Add Created and Updated to Milestone table", addCreatedAndUpdatedToMilestones),
// v150 -> v151
NewMigration("add primary key to repo_topic", addPrimaryKeyToRepoTopic),
// v151 -> v152
NewMigration("set default password algorithm to Argon2", setDefaultPasswordToArgon2),
// v152 -> v153
NewMigration("add TrustModel field to Repository", addTrustModelToRepository),
}
// GetCurrentDBVersion returns the current db version
func GetCurrentDBVersion(x *xorm.Engine) (int64, error) {
if err := x.Sync(new(Version)); err != nil {
return -1, fmt.Errorf("sync: %v", err)
}
currentVersion := &Version{ID: 1}
has, err := x.Get(currentVersion)
if err != nil {
return -1, fmt.Errorf("get: %v", err)
}
if !has {
return -1, nil
}
return currentVersion.Version, nil
}
// ExpectedVersion returns the expected db version
func ExpectedVersion() int64 {
return int64(minDBVersion + len(migrations))
}
// EnsureUpToDate will check if the db is at the correct version
func EnsureUpToDate(x *xorm.Engine) error {
currentDB, err := GetCurrentDBVersion(x)
if err != nil {
return err
}
if currentDB < 0 {
return fmt.Errorf("Database has not been initialised")
}
if minDBVersion > currentDB {
return fmt.Errorf("DB version %d (<= %d) is too old for auto-migration. Upgrade to Gitea 1.6.4 first then upgrade to this version", currentDB, minDBVersion)
}
expected := ExpectedVersion()
if currentDB != expected {
return fmt.Errorf(`Current database version %d is not equal to the expected version %d. Please run "gitea [--config /path/to/app.ini] migrate" to update the database version`, currentDB, expected)
}
return nil
}
// Migrate database to current version
func Migrate(x *xorm.Engine) error {
if err := x.Sync(new(Version)); err != nil {
return fmt.Errorf("sync: %v", err)
}
currentVersion := &Version{ID: 1}
has, err := x.Get(currentVersion)
if err != nil {
return fmt.Errorf("get: %v", err)
} else if !has {
// If the version record does not exist we think
// it is a fresh installation and we can skip all migrations.
currentVersion.ID = 0
currentVersion.Version = int64(minDBVersion + len(migrations))
if _, err = x.InsertOne(currentVersion); err != nil {
return fmt.Errorf("insert: %v", err)
}
}
v := currentVersion.Version
if minDBVersion > v {
log.Fatal(`Gitea no longer supports auto-migration from your previously installed version.
Please try upgrading to a lower version first (suggested v1.6.4), then upgrade to this version.`)
return nil
}
if int(v-minDBVersion) > len(migrations) {
// User downgraded Gitea.
currentVersion.Version = int64(len(migrations) + minDBVersion)
_, err = x.ID(1).Update(currentVersion)
return err
}
for i, m := range migrations[v-minDBVersion:] {
log.Info("Migration[%d]: %s", v+int64(i), m.Description())
if err = m.Migrate(x); err != nil {
return fmt.Errorf("do migrate: %v", err)
}
currentVersion.Version = v + int64(i) + 1
if _, err = x.ID(1).Update(currentVersion); err != nil {
return err
}
}
return nil
}
// RecreateTables will recreate the tables for the provided beans using the newly provided bean definition and move all data to that new table
// WARNING: YOU MUST PROVIDE THE FULL BEAN DEFINITION
func RecreateTables(beans ...interface{}) func(*xorm.Engine) error {
return func(x *xorm.Engine) error {
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return err
}
sess = sess.StoreEngine("InnoDB")
for _, bean := range beans {
log.Info("Recreating Table: %s for Bean: %s", x.TableName(bean), reflect.Indirect(reflect.ValueOf(bean)).Type().Name())
if err := recreateTable(sess, bean); err != nil {
return err
}
}
return sess.Commit()
}
}
// recreateTable will recreate the table using the newly provided bean definition and move all data to that new table
// WARNING: YOU MUST PROVIDE THE FULL BEAN DEFINITION
// WARNING: YOU MUST COMMIT THE SESSION AT THE END
func recreateTable(sess *xorm.Session, bean interface{}) error {
// TODO: This will not work if there are foreign keys
tableName := sess.Engine().TableName(bean)
tempTableName := fmt.Sprintf("tmp_recreate__%s", tableName)
// We need to move the old table away and create a new one with the correct columns
// We will need to do this in stages to prevent data loss
//
// First create the temporary table
if err := sess.Table(tempTableName).CreateTable(bean); err != nil {
log.Error("Unable to create table %s. Error: %v", tempTableName, err)
return err
}
if err := sess.Table(tempTableName).CreateUniques(bean); err != nil {
log.Error("Unable to create uniques for table %s. Error: %v", tempTableName, err)
return err
}
if err := sess.Table(tempTableName).CreateIndexes(bean); err != nil {
log.Error("Unable to create indexes for table %s. Error: %v", tempTableName, err)
return err
}
// Work out the column names from the bean - these are the columns to select from the old table and install into the new table
table, err := sess.Engine().TableInfo(bean)
if err != nil {
log.Error("Unable to get table info. Error: %v", err)
return err
}
newTableColumns := table.Columns()
if len(newTableColumns) == 0 {
return fmt.Errorf("no columns in new table")
}
hasID := false
for _, column := range newTableColumns {
hasID = hasID || (column.IsPrimaryKey && column.IsAutoIncrement)
}
if hasID && setting.Database.UseMSSQL {
if _, err := sess.Exec(fmt.Sprintf("SET IDENTITY_INSERT `%s` ON", tempTableName)); err != nil {
log.Error("Unable to set identity insert for table %s. Error: %v", tempTableName, err)
return err
}
}
sqlStringBuilder := &strings.Builder{}
_, _ = sqlStringBuilder.WriteString("INSERT INTO `")
_, _ = sqlStringBuilder.WriteString(tempTableName)
_, _ = sqlStringBuilder.WriteString("` (`")
_, _ = sqlStringBuilder.WriteString(newTableColumns[0].Name)
_, _ = sqlStringBuilder.WriteString("`")
for _, column := range newTableColumns[1:] {
_, _ = sqlStringBuilder.WriteString(", `")
_, _ = sqlStringBuilder.WriteString(column.Name)
_, _ = sqlStringBuilder.WriteString("`")
}
_, _ = sqlStringBuilder.WriteString(")")
_, _ = sqlStringBuilder.WriteString(" SELECT ")
if newTableColumns[0].Default != "" {
_, _ = sqlStringBuilder.WriteString("COALESCE(`")
_, _ = sqlStringBuilder.WriteString(newTableColumns[0].Name)
_, _ = sqlStringBuilder.WriteString("`, ")
_, _ = sqlStringBuilder.WriteString(newTableColumns[0].Default)
_, _ = sqlStringBuilder.WriteString(")")
} else {
_, _ = sqlStringBuilder.WriteString("`")
_, _ = sqlStringBuilder.WriteString(newTableColumns[0].Name)
_, _ = sqlStringBuilder.WriteString("`")
}
for _, column := range newTableColumns[1:] {
if column.Default != "" {
_, _ = sqlStringBuilder.WriteString(", COALESCE(`")
_, _ = sqlStringBuilder.WriteString(column.Name)
_, _ = sqlStringBuilder.WriteString("`, ")
_, _ = sqlStringBuilder.WriteString(column.Default)
_, _ = sqlStringBuilder.WriteString(")")
} else {
_, _ = sqlStringBuilder.WriteString(", `")
_, _ = sqlStringBuilder.WriteString(column.Name)
_, _ = sqlStringBuilder.WriteString("`")
}
}
_, _ = sqlStringBuilder.WriteString(" FROM `")
_, _ = sqlStringBuilder.WriteString(tableName)
_, _ = sqlStringBuilder.WriteString("`")
if _, err := sess.Exec(sqlStringBuilder.String()); err != nil {
log.Error("Unable to set copy data in to temp table %s. Error: %v", tempTableName, err)
return err
}
if hasID && setting.Database.UseMSSQL {
if _, err := sess.Exec(fmt.Sprintf("SET IDENTITY_INSERT `%s` OFF", tempTableName)); err != nil {
log.Error("Unable to switch off identity insert for table %s. Error: %v", tempTableName, err)
return err
}
}
switch {
case setting.Database.UseSQLite3:
// SQLite will drop all the constraints on the old table
if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s`", tableName)); err != nil {
log.Error("Unable to drop old table %s. Error: %v", tableName, err)
return err
}
if err := sess.Table(tempTableName).DropIndexes(bean); err != nil {
log.Error("Unable to drop indexes on temporary table %s. Error: %v", tempTableName, err)
return err
}
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` RENAME TO `%s`", tempTableName, tableName)); err != nil {
log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
return err
}
if err := sess.Table(tableName).CreateIndexes(bean); err != nil {
log.Error("Unable to recreate indexes on table %s. Error: %v", tableName, err)
return err
}
if err := sess.Table(tableName).CreateUniques(bean); err != nil {
log.Error("Unable to recreate uniques on table %s. Error: %v", tableName, err)
return err
}
case setting.Database.UseMySQL:
// MySQL will drop all the constraints on the old table
if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s`", tableName)); err != nil {
log.Error("Unable to drop old table %s. Error: %v", tableName, err)
return err
}
// SQLite and MySQL will move all the constraints from the temporary table to the new table
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` RENAME TO `%s`", tempTableName, tableName)); err != nil {
log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
return err
}
case setting.Database.UsePostgreSQL:
// CASCADE causes postgres to drop all the constraints on the old table
if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s` CASCADE", tableName)); err != nil {
log.Error("Unable to drop old table %s. Error: %v", tableName, err)
return err
}
// CASCADE causes postgres to move all the constraints from the temporary table to the new table
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` RENAME TO `%s`", tempTableName, tableName)); err != nil {
log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
return err
}
var indices []string
schema := sess.Engine().Dialect().URI().Schema
sess.Engine().SetSchema("")
if err := sess.Table("pg_indexes").Cols("indexname").Where("tablename = ? ", tableName).Find(&indices); err != nil {
log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
return err
}
sess.Engine().SetSchema(schema)
for _, index := range indices {
newIndexName := strings.Replace(index, "tmp_recreate__", "", 1)
if _, err := sess.Exec(fmt.Sprintf("ALTER INDEX `%s` RENAME TO `%s`", index, newIndexName)); err != nil {
log.Error("Unable to rename %s to %s. Error: %v", index, newIndexName, err)
return err
}
}
case setting.Database.UseMSSQL:
// MSSQL will drop all the constraints on the old table
if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s`", tableName)); err != nil {
log.Error("Unable to drop old table %s. Error: %v", tableName, err)
return err
}
// MSSQL sp_rename will move all the constraints from the temporary table to the new table
if _, err := sess.Exec(fmt.Sprintf("sp_rename `%s`,`%s`", tempTableName, tableName)); err != nil {
log.Error("Unable to rename %s to %s. Error: %v", tempTableName, tableName, err)
return err
}
default:
log.Fatal("Unrecognized DB")
}
return nil
}
// WARNING: YOU MUST COMMIT THE SESSION AT THE END
func dropTableColumns(sess *xorm.Session, tableName string, columnNames ...string) (err error) {
if tableName == "" || len(columnNames) == 0 {
return nil
}
// TODO: This will not work if there are foreign keys
switch {
case setting.Database.UseSQLite3:
// First drop the indexes on the columns
res, errIndex := sess.Query(fmt.Sprintf("PRAGMA index_list(`%s`)", tableName))
if errIndex != nil {
return errIndex
}
for _, row := range res {
indexName := row["name"]
indexRes, err := sess.Query(fmt.Sprintf("PRAGMA index_info(`%s`)", indexName))
if err != nil {
return err
}
if len(indexRes) != 1 {
continue
}
indexColumn := string(indexRes[0]["name"])
for _, name := range columnNames {
if name == indexColumn {
_, err := sess.Exec(fmt.Sprintf("DROP INDEX `%s`", indexName))
if err != nil {
return err
}
}
}
}
// Here we need to get the columns from the original table
sql := fmt.Sprintf("SELECT sql FROM sqlite_master WHERE tbl_name='%s' and type='table'", tableName)
res, err := sess.Query(sql)
if err != nil {
return err
}
tableSQL := string(res[0]["sql"])
// Separate out the column definitions
tableSQL = tableSQL[strings.Index(tableSQL, "("):]
// Remove the required columnNames
for _, name := range columnNames {
tableSQL = regexp.MustCompile(regexp.QuoteMeta("`"+name+"`")+"[^`,)]*?[,)]").ReplaceAllString(tableSQL, "")
}
// Ensure the query is ended properly
tableSQL = strings.TrimSpace(tableSQL)
if tableSQL[len(tableSQL)-1] != ')' {
if tableSQL[len(tableSQL)-1] == ',' {
tableSQL = tableSQL[:len(tableSQL)-1]
}
tableSQL += ")"
}
// Find all the columns in the table
columns := regexp.MustCompile("`([^`]*)`").FindAllString(tableSQL, -1)
tableSQL = fmt.Sprintf("CREATE TABLE `new_%s_new` ", tableName) + tableSQL
if _, err := sess.Exec(tableSQL); err != nil {
return err
}
// Now restore the data
columnsSeparated := strings.Join(columns, ",")
insertSQL := fmt.Sprintf("INSERT INTO `new_%s_new` (%s) SELECT %s FROM %s", tableName, columnsSeparated, columnsSeparated, tableName)
if _, err := sess.Exec(insertSQL); err != nil {
return err
}
// Now drop the old table
if _, err := sess.Exec(fmt.Sprintf("DROP TABLE `%s`", tableName)); err != nil {
return err
}
// Rename the table
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `new_%s_new` RENAME TO `%s`", tableName, tableName)); err != nil {
return err
}
case setting.Database.UsePostgreSQL:
cols := ""
for _, col := range columnNames {
if cols != "" {
cols += ", "
}
cols += "DROP COLUMN `" + col + "` CASCADE"
}
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` %s", tableName, cols)); err != nil {
return fmt.Errorf("Drop table `%s` columns %v: %v", tableName, columnNames, err)
}
case setting.Database.UseMySQL:
// Drop indexes on columns first
sql := fmt.Sprintf("SHOW INDEX FROM %s WHERE column_name IN ('%s')", tableName, strings.Join(columnNames, "','"))
res, err := sess.Query(sql)
if err != nil {
return err
}
for _, index := range res {
indexName := index["column_name"]
if len(indexName) > 0 {
_, err := sess.Exec(fmt.Sprintf("DROP INDEX `%s` ON `%s`", indexName, tableName))
if err != nil {
return err
}
}
}
// Now drop the columns
cols := ""
for _, col := range columnNames {
if cols != "" {
cols += ", "
}
cols += "DROP COLUMN `" + col + "`"
}
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` %s", tableName, cols)); err != nil {
return fmt.Errorf("Drop table `%s` columns %v: %v", tableName, columnNames, err)
}
case setting.Database.UseMSSQL:
cols := ""
for _, col := range columnNames {
if cols != "" {
cols += ", "
}
cols += "`" + strings.ToLower(col) + "`"
}
sql := fmt.Sprintf("SELECT Name FROM SYS.DEFAULT_CONSTRAINTS WHERE PARENT_OBJECT_ID = OBJECT_ID('%[1]s') AND PARENT_COLUMN_ID IN (SELECT column_id FROM sys.columns WHERE lower(NAME) IN (%[2]s) AND object_id = OBJECT_ID('%[1]s'))",
tableName, strings.Replace(cols, "`", "'", -1))
constraints := make([]string, 0)
if err := sess.SQL(sql).Find(&constraints); err != nil {
return fmt.Errorf("Find constraints: %v", err)
}
for _, constraint := range constraints {
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` DROP CONSTRAINT `%s`", tableName, constraint)); err != nil {
return fmt.Errorf("Drop table `%s` constraint `%s`: %v", tableName, constraint, err)
}
}
if _, err := sess.Exec(fmt.Sprintf("ALTER TABLE `%s` DROP COLUMN %s", tableName, cols)); err != nil {
return fmt.Errorf("Drop table `%s` columns %v: %v", tableName, columnNames, err)
}
default:
log.Fatal("Unrecognized DB")
}
return nil
}