A fork of Gitea (see branch `mj`) adding Majority Judgment Polls 𐄷 over Issues and Merge Requests. https://git.mieuxvoter.fr
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// 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 (
"context"
"fmt"
"os"
"reflect"
"regexp"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"xorm.io/xorm"
"xorm.io/xorm/schemas"
)
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 1.5.0 ends at v69
// v70 -> v71
NewMigration("add issue_dependencies", addIssueDependencies),
// v71 -> v72
NewMigration("protect each scratch token", addScratchHash),
// v72 -> v73
NewMigration("add review", addReview),
// Gitea 1.6.0 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 1.7.0 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 1.8.0 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 1.9.0 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),
// 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),
// Gitea 1.10.0 ends at v102
// 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),
// Gitea 1.11.0 ends at v117
// 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),
// Gitea 1.12.0 ends at v140
// 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),
// v153 > v154
NewMigration("add Team review request support", addTeamReviewRequestSupport),
// v154 > v155
NewMigration("add timestamps to Star, Label, Follow, Watch and Collaboration", addTimeStamps),
// Gitea 1.13.0 ends at v155
// v155 -> v156
NewMigration("add changed_protected_files column for pull_request table", addChangedProtectedFilesPullRequestColumn),
// v156 -> v157
NewMigration("fix publisher ID for tag releases", fixPublisherIDforTagReleases),
// v157 -> v158
NewMigration("ensure repo topics are up-to-date", fixRepoTopics),
// v158 -> v159
NewMigration("code comment replies should have the commitID of the review they are replying to", updateCodeCommentReplies),
// v159 -> v160
NewMigration("update reactions constraint", updateReactionConstraint),
// v160 -> v161
NewMigration("Add block on official review requests branch protection", addBlockOnOfficialReviewRequests),
// v161 -> v162
NewMigration("Convert task type from int to string", convertTaskTypeToString),
// v162 -> v163
NewMigration("Convert webhook task type from int to string", convertWebhookTaskTypeToString),
// v163 -> v164
NewMigration("Convert topic name from 25 to 50", convertTopicNameFrom25To50),
// v164 -> v165
NewMigration("Add scope and nonce columns to oauth2_grant table", addScopeAndNonceColumnsToOAuth2Grant),
// v165 -> v166
NewMigration("Convert hook task type from char(16) to varchar(16) and trim the column", convertHookTaskTypeToVarcharAndTrim),
// v166 -> v167
NewMigration("Where Password is Valid with Empty String delete it", recalculateUserEmptyPWD),
// v167 -> v168
NewMigration("Add user redirect", addUserRedirect),
}
// 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
}
// Downgrading Gitea's database version not supported
if int(v-minDBVersion) > len(migrations) {
msg := fmt.Sprintf("Downgrading database version from '%d' to '%d' is not supported and may result in loss of data integrity.\nIf you really know what you're doing, execute `UPDATE version SET version=%d WHERE id=1;`\n",
v, minDBVersion+len(migrations), minDBVersion+len(migrations))
fmt.Fprint(os.Stderr, msg)
log.Fatal(msg)
return nil
}
// Migrate
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.ReplaceAll(cols, "`", "'"))
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
}
// modifyColumn will modify column's type or other propertity. SQLITE is not supported
func modifyColumn(x *xorm.Engine, tableName string, col *schemas.Column) error {
var indexes map[string]*schemas.Index
var err error
// MSSQL have to remove index at first, otherwise alter column will fail
// ref. https://sqlzealots.com/2018/05/09/error-message-the-index-is-dependent-on-column-alter-table-alter-column-failed-because-one-or-more-objects-access-this-column/
if x.Dialect().URI().DBType == schemas.MSSQL {
indexes, err = x.Dialect().GetIndexes(x.DB(), context.Background(), tableName)
if err != nil {
return err
}
for _, index := range indexes {
_, err = x.Exec(x.Dialect().DropIndexSQL(tableName, index))
if err != nil {
return err
}
}
}
defer func() {
for _, index := range indexes {
_, err = x.Exec(x.Dialect().CreateIndexSQL(tableName, index))
if err != nil {
log.Error("Create index %s on table %s failed: %v", index.Name, tableName, err)
}
}
}()
alterSQL := x.Dialect().ModifyColumnSQL(tableName, col)
if _, err := x.Exec(alterSQL); err != nil {
return err
}
return nil
}