8801df1672
- Update file's directory associations on creation/update - Remove file from old directories when updated - Add file to new directories when updated - Add test for file creation and directory association
HeroFS - Distributed Filesystem for HeroLib
HeroFS is a distributed filesystem implementation built on top of HeroDB (Redis-based storage). It provides a virtual filesystem with support for files, directories, symbolic links, and binary data blobs.
Overview
HeroFS implements a filesystem structure where:
- Fs: Represents a filesystem as a top-level container
- FsDir: Represents directories within a filesystem
- FsFile: Represents files with support for multiple directory associations
- FsSymlink: Represents symbolic links pointing to files or directories
- FsBlob: Represents binary data chunks (up to 1MB) used as file content
Features
- Distributed storage using Redis
- Support for files, directories, and symbolic links
- Blob-based file content storage with integrity verification
- Multiple directory associations for files (similar to hard links)
- Filesystem quotas and usage tracking
- Metadata support for files
- Efficient lookup mechanisms using Redis hash sets
Installation
HeroFS is part of HeroLib and is automatically available when using HeroLib.
Usage
To use HeroFS, you need to create a filesystem factory:
import freeflowuniverse.herolib.hero.herofs
mut fs_factory := herofs.new()!
Creating a Filesystem
mut fs := fs_factory.fs.new(
name: 'my_filesystem'
quota_bytes: 1000000000 // 1GB quota
)!
fs = fs_factory.fs.set(fs)!
fs_id := fs.id
Working with Directories
// Create root directory
mut root_dir := fs_factory.fs_dir.new(
name: 'root'
fs_id: fs_id
parent_id: 0
)!
root_dir_id := fs_factory.fs_dir.set(root_dir)!
// Create subdirectory
mut sub_dir := fs_factory.fs_dir.new(
name: 'documents'
fs_id: fs_id
parent_id: root_dir_id
)!
sub_dir_id := fs_factory.fs_dir.set(sub_dir)!
Working with Blobs
// Create a blob with binary data
mut blob := fs_factory.fs_blob.new(
data: content_bytes
mime_type: 'text/plain'
)!
blob_id := fs_factory.fs_blob.set(blob)!
Working with Files
// Create a file
mut file := fs_factory.fs_file.new(
name: 'example.txt'
fs_id: fs_id
directories: [root_dir_id]
blobs: [blob_id]
)!
file_id := fs_factory.fs_file.set(file)!
Working with Symbolic Links
// Create a symbolic link to a file
mut symlink := fs_factory.fs_symlink.new(
name: 'example_link.txt'
fs_id: fs_id
parent_id: root_dir_id
target_id: file_id
target_type: .file
)!
symlink_id := fs_factory.fs_symlink.set(symlink)!
API Reference
The HeroFS module provides the following main components:
FsFactory- Main factory for accessing all filesystem componentsDBFs- Filesystem operationsDBFsDir- Directory operationsDBFsFile- File operationsDBFsSymlink- Symbolic link operationsDBFsBlob- Binary data blob operations
Each component provides CRUD operations and specialized methods for filesystem management.
Examples
Check the examples/hero/herofs/ directory for detailed usage examples.