monitor is a command-line tool designed to observe and display live information about Rhai workers managed by rhailib. It provides insights into Redis queue congestion and a table of tasks being processed by specified workers.

Features (Planned)

Live Redis Queue Visualization: Displays a textual, horizontal plot showing the number of tasks in the Redis queue for each monitored worker. The plot will be color-coded to indicate congestion levels and will update by polling the queue size.
Task Table: Shows a table of tasks associated with each worker, including task hash, creation date, status (e.g., pending, running, completed, failed), and potentially other details.

Prerequisites

Rust and Cargo installed.
Access to the Redis instance used by the Rhai workers.

Building

Navigate to the rhailib/monitor crate's root directory and build the project:

cargo build

Usage

To run the monitor, you need to specify which worker queues you want to observe using the --workers (or -w) flag. Provide a comma-separated list of worker names.

From the rhailib/monitor root directory:

cargo run -- --workers <worker_name_1>[,<worker_name_2>,...]

Or from the parent rhailib directory (workspace root):

cargo run -p monitor -- --workers <worker_name_1>[,<worker_name_2>,...]

Examples:

Monitor a single worker named my_default_worker (from rhailib/monitor):
```
cargo run -- --workers my_default_worker
```
Monitor multiple workers, image_processing_worker and data_analysis_worker (from rhailib workspace root):
```
cargo run -p monitor -- --workers image_processing_worker,data_analysis_worker
```

Command-Line Options

-w, --workers <WORKERS>: (Required) A comma-separated list of worker names to monitor.

(Future options might include Redis connection parameters, polling intervals, etc.)

Development

The core logic for the monitor is located in rhailib/monitor/src/:

lib.rs: Main library file, defines modules.
cli_logic.rs: Handles argument parsing, Redis interaction, and orchestrates the display.
plot.rs: Responsible for generating the textual queue visualization.
tasks.rs: Responsible for fetching and displaying the task table.

The binary entry point is rhailib/monitor/src/main.rs.

README.md

Rhai Worker Monitor (monitor)