From f40a2a4404e3eabf5e28ae43e1f395bb13176307 Mon Sep 17 00:00:00 2001
From: zeripath <art27@cantab.net>
Date: Sat, 24 Oct 2020 00:46:35 +0100
Subject: [PATCH] Store task errors following migrations and display them
 (#13246)

* Store task errors following migrations and display them

When migrate tasks fail store the error in the task table
and ensure that they show on the status page.

Fix #13242

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

* Update web_src/js/index.js

* Hide the failed first

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

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
---
 models/task.go                        |  21 ++++++++++++++
 modules/task/migrate.go               |  39 +++++++++++++++-----------
 public/img/failed.png                 | Bin 0 -> 11009 bytes
 routers/repo/repo.go                  |  16 -----------
 routers/routes/routes.go              |   3 +-
 routers/user/task.go                  |  30 ++++++++++++++++++++
 templates/repo/migrate/migrating.tmpl |   8 +++++-
 web_src/js/index.js                   |  19 +++++++++----
 8 files changed, 95 insertions(+), 41 deletions(-)
 create mode 100644 public/img/failed.png
 create mode 100644 routers/user/task.go

diff --git a/models/task.go b/models/task.go
index 43cb2d4d9..b86314b44 100644
--- a/models/task.go
+++ b/models/task.go
@@ -147,6 +147,27 @@ func GetMigratingTask(repoID int64) (*Task, error) {
 	return &task, nil
 }
 
+// GetMigratingTaskByID returns the migrating task by repo's id
+func GetMigratingTaskByID(id, doerID int64) (*Task, *migration.MigrateOptions, error) {
+	var task = Task{
+		ID:     id,
+		DoerID: doerID,
+		Type:   structs.TaskTypeMigrateRepo,
+	}
+	has, err := x.Get(&task)
+	if err != nil {
+		return nil, nil, err
+	} else if !has {
+		return nil, nil, ErrTaskDoesNotExist{id, 0, task.Type}
+	}
+
+	var opts migration.MigrateOptions
+	if err := json.Unmarshal([]byte(task.PayloadContent), &opts); err != nil {
+		return nil, nil, err
+	}
+	return &task, &opts, nil
+}
+
 // FindTaskOptions find all tasks
 type FindTaskOptions struct {
 	Status int
diff --git a/modules/task/migrate.go b/modules/task/migrate.go
index d25decaa0..99f0435b2 100644
--- a/modules/task/migrate.go
+++ b/modules/task/migrate.go
@@ -20,7 +20,7 @@ import (
 	"code.gitea.io/gitea/modules/util"
 )
 
-func handleCreateError(owner *models.User, err error, name string) error {
+func handleCreateError(owner *models.User, err error) error {
 	switch {
 	case models.IsErrReachLimitOfRepo(err):
 		return fmt.Errorf("You have already reached your limit of %d repositories", owner.MaxCreationLimit())
@@ -38,8 +38,8 @@ func handleCreateError(owner *models.User, err error, name string) error {
 func runMigrateTask(t *models.Task) (err error) {
 	defer func() {
 		if e := recover(); e != nil {
-			err = fmt.Errorf("PANIC whilst trying to do migrate task: %v\nStacktrace: %v", err, log.Stack(2))
-			log.Critical("PANIC during runMigrateTask[%d] by DoerID[%d] to RepoID[%d] for OwnerID[%d]: %v", t.ID, t.DoerID, t.RepoID, t.OwnerID, err)
+			err = fmt.Errorf("PANIC whilst trying to do migrate task: %v", e)
+			log.Critical("PANIC during runMigrateTask[%d] by DoerID[%d] to RepoID[%d] for OwnerID[%d]: %v\nStacktrace: %v", t.ID, t.DoerID, t.RepoID, t.OwnerID, e, log.Stack(2))
 		}
 
 		if err == nil {
@@ -55,7 +55,8 @@ func runMigrateTask(t *models.Task) (err error) {
 		t.EndTime = timeutil.TimeStampNow()
 		t.Status = structs.TaskStatusFailed
 		t.Errors = err.Error()
-		if err := t.UpdateCols("status", "errors", "end_time"); err != nil {
+		t.RepoID = 0
+		if err := t.UpdateCols("status", "errors", "repo_id", "end_time"); err != nil {
 			log.Error("Task UpdateCols failed: %v", err)
 		}
 
@@ -66,8 +67,8 @@ func runMigrateTask(t *models.Task) (err error) {
 		}
 	}()
 
-	if err := t.LoadRepo(); err != nil {
-		return err
+	if err = t.LoadRepo(); err != nil {
+		return
 	}
 
 	// if repository is ready, then just finsih the task
@@ -75,33 +76,35 @@ func runMigrateTask(t *models.Task) (err error) {
 		return nil
 	}
 
-	if err := t.LoadDoer(); err != nil {
-		return err
+	if err = t.LoadDoer(); err != nil {
+		return
 	}
-	if err := t.LoadOwner(); err != nil {
-		return err
+	if err = t.LoadOwner(); err != nil {
+		return
 	}
 	t.StartTime = timeutil.TimeStampNow()
 	t.Status = structs.TaskStatusRunning
-	if err := t.UpdateCols("start_time", "status"); err != nil {
-		return err
+	if err = t.UpdateCols("start_time", "status"); err != nil {
+		return
 	}
 
 	var opts *migration.MigrateOptions
 	opts, err = t.MigrateConfig()
 	if err != nil {
-		return err
+		return
 	}
 
 	opts.MigrateToRepoID = t.RepoID
-	repo, err := migrations.MigrateRepository(graceful.GetManager().HammerContext(), t.Doer, t.Owner.Name, *opts)
+	var repo *models.Repository
+	repo, err = migrations.MigrateRepository(graceful.GetManager().HammerContext(), t.Doer, t.Owner.Name, *opts)
 	if err == nil {
 		log.Trace("Repository migrated [%d]: %s/%s", repo.ID, t.Owner.Name, repo.Name)
-		return nil
+		return
 	}
 
 	if models.IsErrRepoAlreadyExist(err) {
-		return errors.New("The repository name is already used")
+		err = errors.New("The repository name is already used")
+		return
 	}
 
 	// remoteAddr may contain credentials, so we sanitize it
@@ -113,5 +116,7 @@ func runMigrateTask(t *models.Task) (err error) {
 		return fmt.Errorf("Migration failed: %v", err.Error())
 	}
 
-	return handleCreateError(t.Owner, err, "MigratePost")
+	// do not be tempted to coalesce this line with the return
+	err = handleCreateError(t.Owner, err)
+	return
 }
diff --git a/public/img/failed.png b/public/img/failed.png
new file mode 100644
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literal 0
HcmV?d00001

diff --git a/routers/repo/repo.go b/routers/repo/repo.go
index 742c952f6..422075032 100644
--- a/routers/repo/repo.go
+++ b/routers/repo/repo.go
@@ -402,19 +402,3 @@ func Download(ctx *context.Context) {
 
 	ctx.ServeFile(archivePath, ctx.Repo.Repository.Name+"-"+refName+ext)
 }
-
-// Status returns repository's status
-func Status(ctx *context.Context) {
-	task, err := models.GetMigratingTask(ctx.Repo.Repository.ID)
-	if err != nil {
-		ctx.JSON(500, map[string]interface{}{
-			"err": err,
-		})
-		return
-	}
-
-	ctx.JSON(200, map[string]interface{}{
-		"status": ctx.Repo.Repository.Status,
-		"err":    task.Errors,
-	})
-}
diff --git a/routers/routes/routes.go b/routers/routes/routes.go
index 7f43b3b2b..f123613b1 100644
--- a/routers/routes/routes.go
+++ b/routers/routes/routes.go
@@ -490,6 +490,7 @@ func RegisterRoutes(m *macaron.Macaron) {
 		m.Get("/forgot_password", user.ForgotPasswd)
 		m.Post("/forgot_password", user.ForgotPasswdPost)
 		m.Post("/logout", user.SignOut)
+		m.Get("/task/:task", user.TaskStatus)
 	})
 	// ***** END: User *****
 
@@ -997,8 +998,6 @@ func RegisterRoutes(m *macaron.Macaron) {
 
 		m.Get("/archive/*", repo.MustBeNotEmpty, reqRepoCodeReader, repo.Download)
 
-		m.Get("/status", reqRepoCodeReader, repo.Status)
-
 		m.Group("/branches", func() {
 			m.Get("", repo.Branches)
 		}, repo.MustBeNotEmpty, context.RepoRef(), reqRepoCodeReader)
diff --git a/routers/user/task.go b/routers/user/task.go
new file mode 100644
index 000000000..a88257ee5
--- /dev/null
+++ b/routers/user/task.go
@@ -0,0 +1,30 @@
+// Copyright 2020 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 user
+
+import (
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/context"
+)
+
+// TaskStatus returns task's status
+func TaskStatus(ctx *context.Context) {
+	task, opts, err := models.GetMigratingTaskByID(ctx.ParamsInt64("task"), ctx.User.ID)
+	if err != nil {
+		ctx.JSON(500, map[string]interface{}{
+			"err": err,
+		})
+		return
+	}
+
+	ctx.JSON(200, map[string]interface{}{
+		"status":    task.Status,
+		"err":       task.Errors,
+		"repo-id":   task.RepoID,
+		"repo-name": opts.RepoName,
+		"start":     task.StartTime,
+		"end":       task.EndTime,
+	})
+}
diff --git a/templates/repo/migrate/migrating.tmpl b/templates/repo/migrate/migrating.tmpl
index 0057325e9..fdda33a2c 100644
--- a/templates/repo/migrate/migrating.tmpl
+++ b/templates/repo/migrate/migrating.tmpl
@@ -7,11 +7,16 @@
 				{{template "base/alert" .}}
 				<div class="home">
 					<div class="ui stackable middle very relaxed page grid">
-						<div id="repo_migrating" class="sixteen wide center aligned centered column" repo="{{.Repo.Repository.FullName}}">
+						<div id="repo_migrating" class="sixteen wide center aligned centered column" task="{{.MigrateTask.ID}}">
 							<div>
 								<img src="{{StaticUrlPrefix}}/img/loading.png"/>
 							</div>
 						</div>
+						<div id="repo_migrating_failed_image" class="sixteen wide center aligned centered column" style="display: none;">
+							<div>
+								<img src="{{StaticUrlPrefix}}/img/failed.png"/>
+							</div>
+						</div>
 					</div>
 					<div class="ui stackable middle very relaxed page grid">
 						<div class="sixteen wide center aligned centered column">
@@ -20,6 +25,7 @@
 							</div>
 							<div id="repo_migrating_failed">
 								<p>{{.i18n.Tr "repo.migrate.migrating_failed" .CloneAddr | Safe}}</p>
+								<p id="repo_migrating_failed_error"></p>
 							</div>
 						</div>
 					</div>
diff --git a/web_src/js/index.js b/web_src/js/index.js
index 863642709..489651e3b 100644
--- a/web_src/js/index.js
+++ b/web_src/js/index.js
@@ -192,25 +192,32 @@ function updateIssuesMeta(url, action, issueIds, elementId) {
 function initRepoStatusChecker() {
   const migrating = $('#repo_migrating');
   $('#repo_migrating_failed').hide();
+  $('#repo_migrating_failed_image').hide();
   if (migrating) {
-    const repo_name = migrating.attr('repo');
-    if (typeof repo_name === 'undefined') {
+    const task = migrating.attr('task');
+    if (typeof task === 'undefined') {
       return;
     }
     $.ajax({
       type: 'GET',
-      url: `${AppSubUrl}/${repo_name}/status`,
+      url: `${AppSubUrl}/user/task/${task}`,
       data: {
         _csrf: csrf,
       },
       complete(xhr) {
         if (xhr.status === 200) {
           if (xhr.responseJSON) {
-            if (xhr.responseJSON.status === 0) {
+            if (xhr.responseJSON.status === 4) {
               window.location.reload();
               return;
+            } else if (xhr.responseJSON.status === 3) {
+              $('#repo_migrating_progress').hide();
+              $('#repo_migrating').hide();
+              $('#repo_migrating_failed').show();
+              $('#repo_migrating_failed_image').show();
+              $('#repo_migrating_failed_error').text(xhr.responseJSON.err);
+              return;
             }
-
             setTimeout(() => {
               initRepoStatusChecker();
             }, 2000);
@@ -218,7 +225,9 @@ function initRepoStatusChecker() {
           }
         }
         $('#repo_migrating_progress').hide();
+        $('#repo_migrating').hide();
         $('#repo_migrating_failed').show();
+        $('#repo_migrating_failed_image').show();
       }
     });
   }