DysonFS

aka. Dyson Network File System

Go implementation of the Dyson Network file service.

Modes

• master: HTTP API, gRPC, uploads, file serving, health check
• worker: post-upload media processing, derived file generation, cleanup
• storage: optional local storage node for filesystem-backed deployments

CLI

Use the first positional argument as the command.

go run ./cmd master
go run ./cmd migrate-legacy --config ./config.toml --legacy-dsn "$LEGACY_DATABASE_DSN"
go run ./cmd reanalyze-missing --config ./config.toml
go run ./cmd validate-storage --config ./config.toml

Logging

• ZEROLOG_PRETTY=true enables console-style pretty logs
• LOG_LEVEL=debug|info|warn|error sets the log level

Run

go run ./cmd master

Legacy migration

Use the one-shot migrator to import data from the old C# database into the new schema:

go run ./cmd migrate-legacy --config ./config.toml --legacy-dsn "$LEGACY_DATABASE_DSN"

Flags:

• --dry-run to simulate without writing
• --skip-derived to skip thumbnail/compression child reconstruction
• --batch-size to tune import batch size
• --continue-on-error to keep going after row-level failures

Metadata reanalysis

Repair missing image/video metadata from stored source files:

go run ./cmd reanalyze-missing --config ./config.toml

It shows a preview first, then asks for confirmation before changing anything.

Flags:

• --reanalyze-limit to cap the preview/repair batch size
• --file-id to target one or more file IDs, comma-separated
• --preview-count to control how many candidates are shown first
• --yes to skip the confirmation prompt

Upload API

Both direct upload and chunked upload creation accept the same metadata payload:

{
  "hash": "...",
  "file_name": "clip.mov",
  "file_size": 12345,
  "content_type": "video/quicktime",
  "pool_id": "...",
  "expired_at": "2026-05-17T12:34:56Z",
  "chunk_size": 5242880,
  "parent_id": "...",
  "usage": "...",
  "application_type": "..."
}

• direct upload uses multipart form data with the same field names, plus file
• parent_id is optional and can still be resolved server-side when omitted
• hash is stored on the created file/task when provided
• upload quota is checked before task creation or direct upload processing
• quota refusal returns 403 Forbidden
• if pool_id is omitted, the quota check uses the resolved default pool

Quota And Billing

Quota values are reported in MB.

Base quota is the sum of:

• leveling quota
• perk quota

Leveling quota uses account.profile.level, clamped to 0..120, with these milestones:

• Lv0: 512MB
• Lv10: 1GB
• Lv60: 5GB
• Lv120: 10GB

Between those milestones, the quota is interpolated piecewise.

Perk quota is added on top of leveling quota:

• perk 1: 10GB
• perk 2: 25GB
• perk 3: 50GB

Extra quota comes from active quota_records and is added after the base quota.

GET /api/billing/quota returns:

{
  "based_quota": 15360,
  "extra_quota": 25,
  "total_quota": 15385
}

GET /api/billing/usage returns:

{
  "used_quota": 300,
  "total_quota": 15385,
  "total_file_count": 2,
  "total_usage_bytes": 209715200
}

Usage accounting rules:

• used_quota is billable usage in MB, not raw bytes
• raw file bytes are returned separately as total_usage_bytes
• pool billing cost_multiplier affects billable usage and quota checks
• the multiplier is applied per file based on the file's pool

Folders

Folders are created with POST /folders.

Request body:

{
  "name": "Projects",
  "parent_id": "..."
}

• A folder is stored as a cloud_files row with is_folder = true and indexed = true
• parent_id is optional
• The current implementation does not yet validate that the parent exists or is a folder
• Root folders automatically get a private read permission record

Permission Management

Files expose read/write/manage permissions through GET /files/:id/permissions and PUT /files/:id/permissions.

• No file permission rows means the file is public
• A private permission row with read makes a file private by default
• Permission checks inherit from ancestor folders
• PUT /files/:id/permissions replaces the full permission set in one batch

Request body:

{
  "items": [
    {
      "id": "...",
      "file_id": "...",
      "subject_type": "account",
      "subject_id": "...",
      "permission": "read"
    },
    {
      "id": "...",
      "file_id": "...",
      "subject_type": "scope",
      "subject_id": "files.manage",
      "permission": "manage"
    }
  ]
}

• subject_type can be public, private, account, or scope
• permission is typically read, write, or manage
• Send the full desired list; omitted rows are removed

File Listings

List responses include extra metadata for navigation and access UI:

• children_count for immediate child count
• permission_status for current access state

Performance notes:

• Child counts and inherited permission status are resolved in batches for list responses to avoid per-file query fan-out.
• Postgres should have a composite index on cloud_files(parent_id, deleted_at) so children_count lookups do not fall back to full table scans.
• Postgres should have a composite index on file_permissions(file_id, permission, deleted_at) so inherited permission-source lookups stay index-backed.
• These indexes are declared in the GORM models and are created by AutoMigrate, but existing deployments need a restart or migration run before the new indexes appear.
• If file-list or permission logs still show slow SQL after rollout, verify the indexes exist with pg_indexes and inspect the hot queries with EXPLAIN (ANALYZE, BUFFERS).

Example:

"permission_status": {
  "readable": true,
  "writable": false,
  "manageable": false,
  "visibility": "private",
  "inherited_from": "..."
}

Storage validation

Validate file_objects.storage_key against remote S3 objects and clean up orphans:

go run ./cmd validate-storage --config ./config.toml --yes

It snapshots remote keys first, then compares the snapshot against the database in batches.

Flags:

• --validate-snapshot to choose the snapshot file path
• --validate-prefix to limit the remote listing prefix
• --validate-batch to control DB batch size
• --yes to skip the confirmation prompt

Config

Use --config or CONFIG_PATH for a TOML config file.

Key settings:

• app.name
• database.dsn
• http.port
• grpc.port
• grpc.useTLS
• grpc.certFile
• grpc.keyFile
• storage.tempDir
• storage.localDir
• auth.target
• auth.useTLS
• passport.target
• passport.useTLS
• quota.leveling.level1
• quota.leveling.level10
• quota.leveling.level60
• quota.leveling.level120
• nats.url
• mode.master
• mode.worker
• mode.storage

Pool storage is configured with [[pools]] and seeded into the database at startup.

Example:

[[pools]]
id = "500e5ed8-bd44-4359-bc0a-ec85e2adf447"
name = "Default"
default = true
hidden = false

[pools.storage]
endpoint = "http://minio:9000"
bucket = "dyson-files"
enableSigned = true
enableSsl = false
secretId = "minio"
secretKey = "minio123"

Notes

• Public read is the default.
• Explicit ACL rows restrict access when present.
• master resolves storage from pool config stored in the database.
• worker listens for file upload events and builds thumbnails, blurhash, and other derived artifacts.
• master can use S3 directly; local storage is still supported.
• The Docker image expects ffmpeg and libvips runtime packages.
• The E2EE file route has been removed.