Introduce a purpose-agnostic three-step session-based upload API that
allows uploading large binary blobs (media files and .penpot imports)
without hitting multipart size limits.
Backend:
- Migration 0147: new `upload_session` table (profile_id, total_chunks,
created_at) with indexes on profile_id and created_at.
- Three new RPC commands in media.clj:
* `create-upload-session` – allocates a session row; enforces
`upload-sessions-per-profile` and `upload-chunks-per-session`
quota limits (configurable in config.clj, defaults 5 / 20).
* `upload-chunk` – stores each slice as a storage object;
validates chunk index bounds and profile ownership.
* `assemble-file-media-object` – reassembles chunks via the shared
`assemble-chunks!` helper and creates the final media object.
- `assemble-chunks!` is a public helper in media.clj shared by both
`assemble-file-media-object` and `import-binfile`.
- `import-binfile` (binfile.clj): accepts an optional `upload-id` param;
when provided, materialises the temp file from chunks instead of
expecting an inline multipart body, removing the 200 MiB body limit
on .penpot imports. Schema updated with an `:and` validator requiring
either `:file` or `:upload-id`.
- quotes.clj: new `upload-sessions-per-profile` quota check.
- Background GC task (`tasks/upload_session_gc.clj`): deletes stalled
(never-completed) sessions older than 1 hour; scheduled daily at
midnight via the cron system in main.clj.
- backend/AGENTS.md: document the background-task wiring pattern.
Frontend:
- New `app.main.data.uploads` namespace: generic `upload-blob-chunked`
helper drives steps 1–2 (create session + upload all chunks with a
concurrency cap of 2) and emits `{:session-id uuid}` for callers.
- `config.cljs`: expose `upload-chunk-size` (default 25 MiB, overridable
via `penpotUploadChunkSize` global).
- `workspace/media.cljs`: blobs ≥ chunk-size go through the chunked path
(`upload-blob-chunked` → `assemble-file-media-object`); smaller blobs
use the existing direct `upload-file-media-object` path.
`handle-media-error` simplified; `on-error` callback removed.
- `worker/import.cljs`: new `import-blob-via-upload` helper replaces the
inline multipart approach for both binfile-v1 and binfile-v3 imports.
- `repo.cljs`: `:upload-chunk` derived as a `::multipart-upload`;
`form-data?` removed from `import-binfile` (JSON params only).
Tests:
- Backend (rpc_media_test.clj): happy path, idempotency, permission
isolation, invalid media type, missing chunks, session-not-found,
chunk-index out-of-range, and quota-limit scenarios.
- Frontend (uploads_test.cljs): session creation and chunk-count
correctness for `upload-blob-chunked`.
- Frontend (workspace_media_test.cljs): direct-upload path for small
blobs, chunked path for large blobs, and chunk-count correctness for
`process-blobs`.
- `helpers/http.cljs`: shared fetch-mock helpers (`install-fetch-mock!`,
`make-json-response`, `make-transit-response`, `url->cmd`).
Signed-off-by: Andrey Antukh <niwi@niwi.nz>
The current binfile export process uses a streaming technique. The
major problem with the streaming approach is the case when an error
happens on the middle of generation, because we have no way to
notify the user about the error (because the response is already
is sent and contents are streaming directly to the user
client/browser).
This commit replaces the streaming with temporal files and SSE
encoded response for emit the export progress events; once the
exportation is finished, a temporal uri to the exported artifact
is emited to the user via "end" event and the frontend code
will automatically trigger the download.
Using the SSE approach removes possible transport timeouts on export
large files by sending progress data over the open connection.
This commit also removes obsolete code related to old binfile
formats.
