Outline knowledge base MCP Server

//! Outline MCP Server - main entry point //! //! MCP server with STDIO and HTTP transport support. use tracing::debug; use outline_mcp_rs::{cli, run_http, run_stdio, Config, Result}; /// Application entry point #[cfg(not(windows))] #[tokio::main] async fn main() -> Result<()> { main_impl().await } #[cfg(windows)] #[tokio::main(flavor = "current_thread")] async fn main() -> Result<()> { main_impl().await } async fn main_impl() -> Result<()> { // Parse CLI arguments first (handles help/version internally) let command = cli::parse_args(); // Initialize logging based on the command mode match command { cli::CliCommand::Http => { // For HTTP mode, initialize full logging immediately init_logging(); } cli::CliCommand::Stdio => { // For STDIO mode, initialize minimal logging to stderr only init_stdio_logging(); } // Help and Version are handled in parse_args() and exit cli::CliCommand::Help | cli::CliCommand::Version => unreachable!(), } // Load variables from .env file (ignore errors if file not found) if let Err(e) = dotenvy::dotenv() { debug!( ".env file not found, using system environment variables: {}", e ); } else { debug!("Environment loaded from .env file"); } let config = Config::from_env()?; match command { cli::CliCommand::Http => run_http(config).await, cli::CliCommand::Stdio => run_stdio(config).await, // Help and Version are handled in parse_args() and exit cli::CliCommand::Help | cli::CliCommand::Version => unreachable!(), } } /// Initialize logging for STDIO mode (stderr only, minimal level) fn init_stdio_logging() { use tracing_subscriber::{fmt, prelude::*, EnvFilter}; // Use error level by default for STDIO, but allow override with RUST_LOG let filter = EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("error")); tracing_subscriber::registry() .with( fmt::layer() .with_writer(std::io::stderr) // Force stderr to avoid JSON pollution .with_ansi(false), // Disable colors for cleaner output ) .with(filter) .init(); } /// Initialize logging with reasonable defaults (for HTTP mode) fn init_logging() { use tracing_subscriber::{fmt, prelude::*, EnvFilter}; let filter = EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info")); tracing_subscriber::registry() .with(fmt::layer()) .with(filter) .init(); }