use anyhow::Result;
use clap::Subcommand;
use tracing::info;
use crate::config::Config;
#[derive(Subcommand)]
pub enum WorkerCommand {
#[command(about = "Start a worker for processing jobs")]
Start {
#[arg(short = 'u', long, help = "Database connection URL")]
database_url: Option<String>,
#[arg(short = 'n', long, help = "Queue name to process")]
queue: String,
#[arg(short = 'c', long, default_value = "1", help = "Number of worker threads")]
workers: u32,
#[arg(long, default_value = "5", help = "Polling interval in seconds")]
poll_interval: u64,
#[arg(long, help = "Maximum number of jobs to process before stopping")]
max_jobs: Option<u32>,
#[arg(long, help = "Worker timeout in seconds")]
timeout: Option<u64>,
#[arg(long, help = "Use strict priority (vs weighted)")]
strict_priority: bool,
},
#[command(about = "List running workers (placeholder)")]
List {
#[arg(short = 'u', long, help = "Database connection URL")]
database_url: Option<String>,
},
#[command(about = "Stop workers gracefully (placeholder)")]
Stop {
#[arg(short = 'u', long, help = "Database connection URL")]
database_url: Option<String>,
#[arg(long, help = "Worker ID to stop")]
worker_id: Option<String>,
#[arg(long, help = "Stop all workers")]
all: bool,
},
#[command(about = "Show worker status and metrics (placeholder)")]
Status {
#[arg(short = 'u', long, help = "Database connection URL")]
database_url: Option<String>,
#[arg(long, help = "Specific worker ID")]
worker_id: Option<String>,
},
}
impl WorkerCommand {
pub async fn execute(&self, config: &Config) -> Result<()> {
match self {
WorkerCommand::Start {
database_url,
queue,
workers,
poll_interval,
max_jobs,
timeout,
strict_priority,
} => {
let db_url = database_url
.as_ref()
.map(|s| s.as_str())
.or(config.get_database_url())
.ok_or_else(|| anyhow::anyhow!("Database URL is required"))?;
start_worker(
db_url,
queue,
*workers,
*poll_interval,
*max_jobs,
*timeout,
*strict_priority,
).await?;
}
WorkerCommand::List { .. } => {
list_workers().await?;
}
WorkerCommand::Stop { worker_id, all, .. } => {
stop_workers(worker_id.clone(), *all).await?;
}
WorkerCommand::Status { worker_id, .. } => {
show_worker_status(worker_id.clone()).await?;
}
}
Ok(())
}
}
async fn start_worker(
database_url: &str,
queue: &str,
worker_count: u32,
poll_interval: u64,
max_jobs: Option<u32>,
timeout: Option<u64>,
strict_priority: bool,
) -> Result<()> {
info!("🚀 Starting {} workers for queue: {}", worker_count, queue);
info!("📡 Database: {}", database_url);
info!("⏱️ Poll interval: {}s", poll_interval);
if let Some(max) = max_jobs {
info!("🎯 Max jobs per worker: {}", max);
}
if let Some(t) = timeout {
info!("⏰ Worker timeout: {}s", t);
}
info!("📊 Priority mode: {}", if strict_priority { "strict" } else { "weighted" });
println!("⚠️ Worker implementation is a placeholder.");
println!("📝 In a full implementation, this would:");
println!(" • Connect to the database");
println!(" • Create a WorkerPool with the specified configuration");
println!(" • Start processing jobs from the '{}' queue", queue);
println!(" • Handle graceful shutdown signals");
println!(" • Provide real-time metrics and logging");
tokio::time::sleep(tokio::time::Duration::from_secs(2)).await;
println!("✅ Worker simulation completed");
Ok(())
}
async fn list_workers() -> Result<()> {
println!("👷 Worker List (Placeholder)");
println!("═══════════════════════════");
let mut table = comfy_table::Table::new();
table.set_header(vec![
"Worker ID", "Queue", "Status", "Jobs Processed", "Uptime", "Last Seen"
]);
table.add_row(vec![
"worker-001", "emails", "🟢 Running", "1,234", "2h 15m", "2s ago"
]);
table.add_row(vec![
"worker-002", "notifications", "🟡 Idle", "567", "1h 42m", "5s ago"
]);
table.add_row(vec![
"worker-003", "reports", "🔴 Error", "89", "45m", "2m ago"
]);
println!("{}", table);
println!("\n💡 This is placeholder data. Implement worker registry for real data.");
Ok(())
}
async fn stop_workers(worker_id: Option<String>, all: bool) -> Result<()> {
if let Some(id) = worker_id {
println!("🛑 Stopping worker: {}", id);
info!("Stopping worker: {}", id);
} else if all {
println!("🛑 Stopping all workers");
info!("Stopping all workers");
} else {
return Err(anyhow::anyhow!("Must specify --worker-id or --all"));
}
println!("⚠️ Worker stop is a placeholder.");
println!("📝 In a full implementation, this would:");
println!(" • Send graceful shutdown signals to worker processes");
println!(" • Wait for current jobs to complete");
println!(" • Update worker registry status");
println!(" • Clean up resources");
tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
println!("✅ Worker stop simulation completed");
Ok(())
}
async fn show_worker_status(worker_id: Option<String>) -> Result<()> {
if let Some(id) = worker_id {
println!("📊 Worker Status: {}", id);
println!("═══════════════════════");
println!("🆔 Worker ID: {}", id);
println!("📍 Queue: emails");
println!("🔄 Status: Running");
println!("⏰ Started: 2024-06-28 10:30:00 UTC");
println!("⏱️ Uptime: 2h 15m 30s");
println!("📈 Jobs Processed: 1,234");
println!("🎯 Success Rate: 98.5%");
println!("🔄 Current Job: processing-email-456");
println!("⚡ Last Activity: 2s ago");
println!("💾 Memory Usage: 45.2 MB");
println!("🏃 CPU Usage: 12.3%");
} else {
println!("📊 Worker Status Overview");
println!("════════════════════════");
let mut table = comfy_table::Table::new();
table.set_header(vec![
"Worker ID", "Queue", "Status", "Uptime", "Jobs", "Success Rate", "Memory"
]);
table.add_row(vec![
"worker-001", "emails", "🟢 Running", "2h 15m", "1,234", "98.5%", "45.2MB"
]);
table.add_row(vec![
"worker-002", "notifications", "🟡 Idle", "1h 42m", "567", "99.1%", "32.1MB"
]);
table.add_row(vec![
"worker-003", "reports", "🔴 Error", "45m", "89", "87.6%", "28.9MB"
]);
println!("{}", table);
println!("\n📈 Aggregate Statistics:");
println!(" Total Workers: 3");
println!(" Active Workers: 1");
println!(" Total Jobs Processed: 1,890");
println!(" Overall Success Rate: 96.8%");
println!(" Total Memory Usage: 106.2 MB");
}
println!("\n💡 This is placeholder data. Implement worker monitoring for real metrics.");
Ok(())
}