Add logging

README.md

@@ -33,6 +33,12 @@ OPTIONS:
     -p, --port <PORT>    port to listen to [default: 7791]
 ```
 
+You can modify the amount of logging with the `RUST_LOG` parameter:
+
+For basic application info (default): `RUST_LOG=gitkv=info ./gitkv`  
+Including incoming HTTP requests: `RUST_LOG=info ./gitkv`  
+For more information check [env_logger](https://docs.rs/env_logger/*/env_logger/index.html)'s documentation.
+
 ## Security
 
 Note that git stores all the content plain so that it's not a good place to store secrets and sensitive information.

server/Cargo.toml

@@ -14,6 +14,8 @@ clap = "^2.32.0"
 futures = "^0.1.26"
 serde = "^1.0.89"
 serde_derive = "^1.0.89"
+log = "^0.4.6"
+env_logger = "^0.6.1"
 
 # When building for musl (ie. a static binary), we opt into the "vendored"
 # feature flag of openssl-sys which compiles libopenssl statically for us.

server/src/main.rs

@@ -3,9 +3,15 @@ extern crate clap;
 #[macro_use]
 extern crate serde_derive;
 extern crate actix_web;
+#[macro_use]
+extern crate log;
+extern crate env_logger;
+
+use log::Level;
 
 use actix_web::actix::{Actor, Addr, System};
 use actix_web::{http, middleware, server, App, Binary, FromRequest, HttpRequest, Responder};
+use env_logger::Env;
 use futures::future::Future;
 use handlers::{CatFile, GitRepos};
 use std::path::Path;
@@ -16,6 +22,8 @@ const DEFAULT_REPO_ROOT: &str = "./";
 const DEFAULT_REFERENCE: &str = "heads/master";
 
 fn main() {
+    env_logger::from_env(Env::default().default_filter_or("gitkv=info")).init();
+
     let args = parse_args().get_matches();
 
     let host = args.value_of("host").unwrap_or(DEFAULT_HOST);
@@ -43,10 +51,22 @@ pub struct AppState {
 fn run_server(host: &str, port: &str, repo_root: &Path) {
     let _sys = System::new("gitkv-server");
 
-    let addr = GitRepos::new(git::load_repos(&repo_root)).start();
+    let repos = git::load_repos(&repo_root);
 
+    if log_enabled!(Level::Info) {
+        let keys = repos
+            .keys()
+            .map(|key| (*key).clone())
+            .collect::<Vec<String>>();
+
+        info!("Loaded Git repos: [{}]", keys.join(", "))
+    }
+
+    let addr = GitRepos::new(repos).start();
     let listen_address = format!("{}:{}", host, port);
 
+    info!("Listening on {}", listen_address);
+
     server::new(move || {
         App::with_state(AppState {
             git_repos: addr.clone(),