Go rewrite of the server-side components of File::Rsync::Mirror::Recent.

This is a re-implementation of the original Perl version created by Andreas König, available at https://repo.or.cz/rersyncrecent.git

This is a Go implementation of the rrr-server and rrr-fsck tools, providing efficient rsync-based mirroring with file system watching capabilities.

• Cross-platform file system watching (fsnotify)
• YAML and JSON serialization formats
• Compatible with Perl-generated RECENT files
• Efficient batch processing
• Aggregation across multiple time intervals

cd rrrgo
go build ./cmd/rrr-server
go build ./cmd/rrr-fsck

Pre-built Docker images are available at https://github.com/abh/rrrgo/pkgs/container/rrrgo

# Latest development build
docker pull ghcr.io/abh/rrrgo:main

# Latest release build
docker pull ghcr.io/abh/rrrgo:latest

Watch a directory tree and continuously update index files:

./rrr-server <local-root>

Arguments:

• <local-root>: Local root directory to watch

Options:

• -i, --interval: Principal recentfile interval (default: "1h", e.g., 30m, 1h, 6h)
• -a, --aggregator: Aggregator intervals (e.g., 6h,1d,1W). Can be specified multiple times
• -f, --format: Serialization format - yaml or json (default: "yaml")
• --batch-size: Maximum batch size before flushing events (default: 1000)
• --batch-delay: Maximum delay before flushing events (default: 1s)
• --aggregate-interval: How often to run aggregation (default: 5m)
• --metrics-port: Port for metrics server (default: 9090)
• --log-level: Log level - debug, info, warn, error (default: "info")
• --skip-fsck: Skip startup integrity check
• --fsck-repair: Auto-repair issues found during startup fsck
• -v, --verbose: Enable verbose logging
• -V, --version: Show version
• -h, --help: Show help

Check consistency between disk and index:

./rrr-fsck <principal-file>

Arguments:

• <principal-file>: Path to principal RECENT file (e.g., RECENT-1h.yaml)

Options:

• -r, --repair: Repair issues found (otherwise just report)
• --skip-events: Skip parsing events (faster, less thorough)
• -v, --verbose: Enable verbose logging
• -V, --version: Show version
• -h, --help: Show help

• recentfile/: Core RECENT file handling, serialization, locking
• recent/: Collection manager for multiple recentfiles
• watcher/: File system watching with fsnotify
• fsck/: Consistency checking functionality
• cmd/rrr-server/: Server daemon
• cmd/rrr-fsck/: Consistency checker tool

The Go implementation reads and writes RECENT files compatible with the Perl version (File::Rsync::Mirror::Recent).

Run tests:

go test ./...

Same terms as Perl itself.