Split migrations folder (#21549)

There are too many files in `models/migrations` folder so that I split
them into sub folders.

models/migrations/v1_15/v180.go

@@ -0,0 +1,122 @@
+// Copyright 2021 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 v1_15 //nolint
+
+import (
+	"code.gitea.io/gitea/modules/json"
+	"code.gitea.io/gitea/modules/util"
+
+	"xorm.io/builder"
+	"xorm.io/xorm"
+)
+
+func DeleteMigrationCredentials(x *xorm.Engine) (err error) {
+	// Task represents a task
+	type Task struct {
+		ID             int64
+		DoerID         int64 `xorm:"index"` // operator
+		OwnerID        int64 `xorm:"index"` // repo owner id, when creating, the repoID maybe zero
+		RepoID         int64 `xorm:"index"`
+		Type           int
+		Status         int `xorm:"index"`
+		StartTime      int64
+		EndTime        int64
+		PayloadContent string `xorm:"TEXT"`
+		Errors         string `xorm:"TEXT"` // if task failed, saved the error reason
+		Created        int64  `xorm:"created"`
+	}
+
+	const TaskTypeMigrateRepo = 0
+	const TaskStatusStopped = 2
+
+	const batchSize = 100
+
+	// only match migration tasks, that are not pending or running
+	cond := builder.Eq{
+		"type": TaskTypeMigrateRepo,
+	}.And(builder.Gte{
+		"status": TaskStatusStopped,
+	})
+
+	sess := x.NewSession()
+	defer sess.Close()
+
+	for start := 0; ; start += batchSize {
+		tasks := make([]*Task, 0, batchSize)
+		if err = sess.Limit(batchSize, start).Where(cond, 0).Find(&tasks); err != nil {
+			return
+		}
+		if len(tasks) == 0 {
+			break
+		}
+		if err = sess.Begin(); err != nil {
+			return
+		}
+		for _, t := range tasks {
+			if t.PayloadContent, err = removeCredentials(t.PayloadContent); err != nil {
+				return
+			}
+			if _, err = sess.ID(t.ID).Cols("payload_content").Update(t); err != nil {
+				return
+			}
+		}
+		if err = sess.Commit(); err != nil {
+			return
+		}
+	}
+	return err
+}
+
+func removeCredentials(payload string) (string, error) {
+	// MigrateOptions defines the way a repository gets migrated
+	// this is for internal usage by migrations module and func who interact with it
+	type MigrateOptions struct {
+		// required: true
+		CloneAddr             string `json:"clone_addr" binding:"Required"`
+		CloneAddrEncrypted    string `json:"clone_addr_encrypted,omitempty"`
+		AuthUsername          string `json:"auth_username"`
+		AuthPassword          string `json:"-"`
+		AuthPasswordEncrypted string `json:"auth_password_encrypted,omitempty"`
+		AuthToken             string `json:"-"`
+		AuthTokenEncrypted    string `json:"auth_token_encrypted,omitempty"`
+		// required: true
+		UID int `json:"uid" binding:"Required"`
+		// required: true
+		RepoName        string `json:"repo_name" binding:"Required"`
+		Mirror          bool   `json:"mirror"`
+		LFS             bool   `json:"lfs"`
+		LFSEndpoint     string `json:"lfs_endpoint"`
+		Private         bool   `json:"private"`
+		Description     string `json:"description"`
+		OriginalURL     string
+		GitServiceType  int
+		Wiki            bool
+		Issues          bool
+		Milestones      bool
+		Labels          bool
+		Releases        bool
+		Comments        bool
+		PullRequests    bool
+		ReleaseAssets   bool
+		MigrateToRepoID int64
+		MirrorInterval  string `json:"mirror_interval"`
+	}
+
+	var opts MigrateOptions
+	err := json.Unmarshal([]byte(payload), &opts)
+	if err != nil {
+		return "", err
+	}
+
+	opts.AuthPassword = ""
+	opts.AuthToken = ""
+	opts.CloneAddr = util.SanitizeCredentialURLs(opts.CloneAddr)
+
+	confBytes, err := json.Marshal(opts)
+	if err != nil {
+		return "", err
+	}
+	return string(confBytes), nil
+}