mielin-cli 0.1.0-rc.1

Command-line interface and control plane for MielinOS distributed agent mesh
Documentation 
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//! Cluster management command handlers

use crate::output::{render_output, OutputFormat};
use crate::types::OperationResult;
use anyhow::Result;
use clap::Subcommand;

#[derive(Subcommand)]
pub enum ClusterCommands {
    /// Initialize a new cluster
    #[command(aliases = ["initialize", "setup"])]
    Init {
        /// Cluster name
        name: String,
    },
    /// Show cluster status
    #[command(aliases = ["st", "stat"])]
    Status,
    /// Run health checks on all nodes
    #[command(aliases = ["check", "healthcheck"])]
    Health,
    /// Perform rolling upgrade of cluster
    #[command(aliases = ["up", "update"])]
    Upgrade {
        /// Version to upgrade to
        version: String,
        /// Maximum nodes to upgrade simultaneously
        #[arg(short, long, default_value = "1")]
        batch_size: usize,
        /// Wait time between batches (seconds)
        #[arg(short, long, default_value = "30")]
        wait: u64,
        /// Skip health checks
        #[arg(long)]
        skip_health_check: bool,
    },
}

pub async fn handle_cluster_command(action: ClusterCommands, format: OutputFormat) -> Result<()> {
    match action {
        ClusterCommands::Init { name } => {
            let result = OperationResult {
                success: true,
                message: format!("Initialized cluster '{}'", name),
                id: Some("cluster-uuid".to_string()),
            };
            println!("{}", render_output(&result, format)?);
        }
        ClusterCommands::Status => {
            let result = OperationResult {
                success: true,
                message: "Cluster status: Healthy (2 nodes, 7 agents)".to_string(),
                id: None,
            };
            println!("{}", render_output(&result, format)?);
        }
        ClusterCommands::Health => {
            let result = OperationResult {
                success: true,
                message: "All health checks passed".to_string(),
                id: None,
            };
            println!("{}", render_output(&result, format)?);
        }
        ClusterCommands::Upgrade {
            version,
            batch_size,
            wait,
            skip_health_check,
        } => {
            use crate::progress::with_spinner;

            println!("Starting rolling upgrade to version {}", version);
            println!("Batch size: {}, Wait time: {}s", batch_size, wait);

            if !skip_health_check {
                with_spinner("Running pre-upgrade health checks", async {
                    tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
                })
                .await;
                println!("✓ Pre-upgrade health checks passed");
            }

            // Simulate rolling upgrade
            let total_nodes: usize = 3; // Mock value
            let batches = total_nodes.div_ceil(batch_size);

            for batch in 1..=batches {
                let nodes_in_batch = if batch == batches {
                    total_nodes - (batch - 1) * batch_size
                } else {
                    batch_size
                };

                let message = format!(
                    "Upgrading batch {}/{} ({} nodes)",
                    batch, batches, nodes_in_batch
                );
                with_spinner(&message, async {
                    tokio::time::sleep(tokio::time::Duration::from_secs(2)).await;
                })
                .await;

                println!("✓ Batch {}/{} upgraded successfully", batch, batches);

                if batch < batches {
                    println!("Waiting {}s before next batch...", wait);
                    tokio::time::sleep(tokio::time::Duration::from_secs(wait.min(3))).await;
                }
            }

            if !skip_health_check {
                with_spinner("Running post-upgrade health checks", async {
                    tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
                })
                .await;
                println!("✓ Post-upgrade health checks passed");
            }

            let result = OperationResult {
                success: true,
                message: format!("Cluster upgraded to version {} successfully", version),
                id: None,
            };
            println!("{}", render_output(&result, format)?);
        }
    }
    Ok(())
}