toeverything/AFFiNE · error · io::Error

NotFound

NotFound

Error message

workspace cache directory not registered

What it means

MobileBlobCache.read_binary_file resolves the workspace's registered cache directory by universal_id; when no directory has been registered for that workspace, the lookup returns None and an io::Error (NotFound, this message) is raised instead of reading the file.

Source

Thrown at packages/frontend/mobile-native/src/cache/mod.rs:299

}

impl MobileBlobCache {
  pub(crate) fn read_binary_file(&self, universal_id: &str, value: &str) -> std::io::Result<Vec<u8>> {
    let path = value
      .strip_prefix(MOBILE_BLOB_FILE_PREFIX)
      .ok_or_else(|| std::io::Error::new(std::io::ErrorKind::InvalidInput, "invalid mobile file token"))?;

    let path = path.strip_prefix("file://").unwrap_or(path);
    let canonical = std::fs::canonicalize(path)?;
    let workspace_dir = {
      self
        .workspace_dirs
        .read()
        .expect("workspace cache lock poisoned")
        .get(universal_id)
        .cloned()
    }
    .ok_or_else(|| std::io::Error::new(std::io::ErrorKind::NotFound, "workspace cache directory not registered"))?;
    let workspace_dir = std::fs::canonicalize(workspace_dir)?;

    if !is_valid_mobile_cache_path(&canonical, &workspace_dir) {
      return Err(std::io::Error::new(
        std::io::ErrorKind::PermissionDenied,
        "mobile file token points outside the workspace cache directory",
      ));
    }

    let metadata = std::fs::metadata(&canonical)?;
    if !metadata.is_file() {
      return Err(std::io::Error::new(
        std::io::ErrorKind::InvalidInput,
        "mobile file token does not resolve to a file",
      ));
    }
    if metadata.len() > MOBILE_BLOB_MAX_READ_BYTES {
      return Err(std::io::Error::new(

View on GitHub (pinned to b4c8548c09)

Solutions

1. Register the workspace cache directory before resolving tokens.
2. Open the workspace first, then retry.

When it happens

Trigger: Raised when read_binary_file is called for a universal_id that has no registered workspace cache directory in workspace_dirs.

Common situations: The workspace was not registered with the mobile blob cache before reading, e.g. after an app restart. Re-open the workspace so its cache directory is registered.

Understand the failure class

Background: "Not Found" / HTTP 404 Errors: What They Mean and How to Fix Them Across Libraries — this error's family across 6 libraries.

AI-assisted analysis of toeverything/AFFiNE@b4c8548c09 (2026-08-18). Data as JSON: /api/errors/7c3029c7a1ba1291. Report an issue: GitHub.