Artifacts retention and auto clean up (#26131)

Currently, Artifact does not have an expiration and automatic cleanup
mechanism, and this feature needs to be added. It contains the following
key points:

- [x] add global artifact retention days option in config file. Default
value is 90 days.
- [x] add cron task to clean up expired artifacts. It should run once a
day.
- [x] support custom retention period from `retention-days: 5` in
`upload-artifact@v3`.
- [x] artifacts link in actions view should be non-clickable text when
expired.

services/actions/cleanup.go

@@ -0,0 +1,42 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package actions
+
+import (
+	"context"
+	"time"
+
+	"code.gitea.io/gitea/models/actions"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/storage"
+)
+
+// Cleanup removes expired actions logs, data and artifacts
+func Cleanup(taskCtx context.Context, olderThan time.Duration) error {
+	// TODO: clean up expired actions logs
+
+	// clean up expired artifacts
+	return CleanupArtifacts(taskCtx)
+}
+
+// CleanupArtifacts removes expired artifacts and set records expired status
+func CleanupArtifacts(taskCtx context.Context) error {
+	artifacts, err := actions.ListNeedExpiredArtifacts(taskCtx)
+	if err != nil {
+		return err
+	}
+	log.Info("Found %d expired artifacts", len(artifacts))
+	for _, artifact := range artifacts {
+		if err := storage.ActionsArtifacts.Delete(artifact.StoragePath); err != nil {
+			log.Error("Cannot delete artifact %d: %v", artifact.ID, err)
+			continue
+		}
+		if err := actions.SetArtifactExpired(taskCtx, artifact.ID); err != nil {
+			log.Error("Cannot set artifact %d expired: %v", artifact.ID, err)
+			continue
+		}
+		log.Info("Artifact %d set expired", artifact.ID)
+	}
+	return nil
+}