show manual cron run's last time (#27544) (#27577)

Backport #27544 by @earl-warren

- Currently in the cron tasks, the 'Previous Time' only displays the
previous time of when the cron library executes the function, but not
any of the manual executions of the task.
- Store the last run's time in memory in the Task struct and use that,
when that time is later than time that the cron library has executed
this task.
- This ensures that if an instance admin manually starts a task, there's
feedback that this task is/has been run, because the task might be run
that quick, that the status icon already has been changed to an
checkmark,
- Tasks that are executed at startup now reflect this as well, as the
time of the execution of that task on startup is now being shown as
'Previous Time'.
- Added integration tests for the API part, which is easier to test
because querying the HTML table of cron tasks is non-trivial.
- Resolves https://codeberg.org/forgejo/forgejo/issues/949

(cherry picked from commit fd34fdac14)

Co-authored-by: Earl Warren <109468362+earl-warren@users.noreply.github.com>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: silverwind <me@silverwind.io>

services/cron/cron.go

@@ -106,6 +106,12 @@ func ListTasks() TaskTable {
 			next = e.NextRun()
 			prev = e.PreviousRun()
 		}
+
+		// If the manual run is after the cron run, use that instead.
+		if prev.Before(task.LastRun) {
+			prev = task.LastRun
+		}
+
 		task.lock.Lock()
 		tTable = append(tTable, &TaskTableRow{
 			Name:        task.Name,

services/cron/tasks.go

@@ -9,6 +9,7 @@ import (
 	"reflect"
 	"strings"
 	"sync"
+	"time"
 
 	"code.gitea.io/gitea/models/db"
 	system_model "code.gitea.io/gitea/models/system"
@@ -37,6 +38,8 @@ type Task struct {
 	LastMessage string
 	LastDoer    string
 	ExecTimes   int64
+	// This stores the time of the last manual run of this task.
+	LastRun time.Time
 }
 
 // DoRunAtStart returns if this task should run at the start
@@ -88,6 +91,12 @@ func (t *Task) RunWithUser(doer *user_model.User, config Config) {
 		}
 	}()
 	graceful.GetManager().RunWithShutdownContext(func(baseCtx context.Context) {
+		// Store the time of this run, before the function is executed, so it
+		// matches the behavior of what the cron library does.
+		t.lock.Lock()
+		t.LastRun = time.Now()
+		t.lock.Unlock()
+
 		pm := process.GetManager()
 		doerName := ""
 		if doer != nil && doer.ID != -1 {

tests/integration/api_admin_test.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"net/http"
 	"testing"
+	"time"
 
 	asymkey_model "code.gitea.io/gitea/models/asymkey"
 	auth_model "code.gitea.io/gitea/models/auth"
@@ -282,3 +283,52 @@ func TestAPIRenameUser(t *testing.T) {
 	})
 	MakeRequest(t, req, http.StatusOK)
 }
+
+func TestAPICron(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	// user1 is an admin user
+	session := loginUser(t, "user1")
+
+	t.Run("List", func(t *testing.T) {
+		defer tests.PrintCurrentTest(t)()
+
+		token := getTokenForLoggedInUser(t, session, auth_model.AccessTokenScopeReadAdmin)
+		urlStr := fmt.Sprintf("/api/v1/admin/cron?token=%s", token)
+		req := NewRequest(t, "GET", urlStr)
+		resp := MakeRequest(t, req, http.StatusOK)
+
+		assert.Equal(t, "28", resp.Header().Get("X-Total-Count"))
+
+		var crons []api.Cron
+		DecodeJSON(t, resp, &crons)
+		assert.Len(t, crons, 28)
+	})
+
+	t.Run("Execute", func(t *testing.T) {
+		defer tests.PrintCurrentTest(t)()
+
+		now := time.Now()
+		token := getTokenForLoggedInUser(t, session, auth_model.AccessTokenScopeWriteAdmin)
+		// Archive cleanup is harmless, because in the test environment there are none
+		// and is thus an NOOP operation and therefore doesn't interfere with any other
+		// tests.
+		urlStr := fmt.Sprintf("/api/v1/admin/cron/archive_cleanup?token=%s", token)
+		req := NewRequest(t, "POST", urlStr)
+		MakeRequest(t, req, http.StatusNoContent)
+
+		// Check for the latest run time for this cron, to ensure it has been run.
+		urlStr = fmt.Sprintf("/api/v1/admin/cron?token=%s", token)
+		req = NewRequest(t, "GET", urlStr)
+		resp := MakeRequest(t, req, http.StatusOK)
+
+		var crons []api.Cron
+		DecodeJSON(t, resp, &crons)
+
+		for _, cron := range crons {
+			if cron.Name == "archive_cleanup" {
+				assert.True(t, now.Before(cron.Prev))
+			}
+		}
+	})
+}