init commit

server/runner/s3presign/runner.go

@@ -0,0 +1,134 @@
+package s3presign
+
+import (
+	"context"
+	"log/slog"
+	"time"
+
+	"google.golang.org/protobuf/types/known/timestamppb"
+
+	"github.com/usememos/memos/plugin/storage/s3"
+	storepb "github.com/usememos/memos/proto/gen/store"
+	"github.com/usememos/memos/store"
+)
+
+type Runner struct {
+	Store *store.Store
+}
+
+func NewRunner(store *store.Store) *Runner {
+	return &Runner{
+		Store: store,
+	}
+}
+
+// Schedule runner every 12 hours.
+const runnerInterval = time.Hour * 12
+
+func (r *Runner) Run(ctx context.Context) {
+	ticker := time.NewTicker(runnerInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			r.RunOnce(ctx)
+		case <-ctx.Done():
+			return
+		}
+	}
+}
+
+func (r *Runner) RunOnce(ctx context.Context) {
+	r.CheckAndPresign(ctx)
+}
+
+func (r *Runner) CheckAndPresign(ctx context.Context) {
+	workspaceStorageSetting, err := r.Store.GetWorkspaceStorageSetting(ctx)
+	if err != nil {
+		return
+	}
+
+	s3StorageType := storepb.AttachmentStorageType_S3
+	// Limit attachments to a reasonable batch size
+	const batchSize = 100
+	offset := 0
+
+	for {
+		limit := batchSize
+		attachments, err := r.Store.ListAttachments(ctx, &store.FindAttachment{
+			GetBlob:     false,
+			StorageType: &s3StorageType,
+			Limit:       &limit,
+			Offset:      &offset,
+		})
+		if err != nil {
+			slog.Error("Failed to list attachments for presigning", "error", err)
+			return
+		}
+
+		// Break if no more attachments
+		if len(attachments) == 0 {
+			break
+		}
+
+		// Process batch of attachments
+		presignCount := 0
+		for _, attachment := range attachments {
+			s3ObjectPayload := attachment.Payload.GetS3Object()
+			if s3ObjectPayload == nil {
+				continue
+			}
+
+			if s3ObjectPayload.LastPresignedTime != nil {
+				// Skip if the presigned URL is still valid for the next 4 days.
+				// The expiration time is set to 5 days.
+				if time.Now().Before(s3ObjectPayload.LastPresignedTime.AsTime().Add(4 * 24 * time.Hour)) {
+					continue
+				}
+			}
+
+			s3Config := workspaceStorageSetting.GetS3Config()
+			if s3ObjectPayload.S3Config != nil {
+				s3Config = s3ObjectPayload.S3Config
+			}
+			if s3Config == nil {
+				slog.Error("S3 config is not found")
+				continue
+			}
+
+			s3Client, err := s3.NewClient(ctx, s3Config)
+			if err != nil {
+				slog.Error("Failed to create S3 client", "error", err)
+				continue
+			}
+
+			presignURL, err := s3Client.PresignGetObject(ctx, s3ObjectPayload.Key)
+			if err != nil {
+				slog.Error("Failed to presign URL", "error", err, "attachmentID", attachment.ID)
+				continue
+			}
+
+			s3ObjectPayload.S3Config = s3Config
+			s3ObjectPayload.LastPresignedTime = timestamppb.New(time.Now())
+			if err := r.Store.UpdateAttachment(ctx, &store.UpdateAttachment{
+				ID:        attachment.ID,
+				Reference: &presignURL,
+				Payload: &storepb.AttachmentPayload{
+					Payload: &storepb.AttachmentPayload_S3Object_{
+						S3Object: s3ObjectPayload,
+					},
+				},
+			}); err != nil {
+				slog.Error("Failed to update attachment", "error", err, "attachmentID", attachment.ID)
+				continue
+			}
+			presignCount++
+		}
+
+		slog.Info("Presigned batch of S3 attachments", "batchSize", len(attachments), "presigned", presignCount)
+
+		// Move to next batch
+		offset += len(attachments)
+	}
+}