more option parsing + github ext

Cargo.lock

@@ -239,6 +239,10 @@ dependencies = [
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "github"
+version = "0.1.0"
+
 [[package]]
 name = "h2"
 version = "0.1.12"

Cargo.toml

@@ -4,6 +4,9 @@ description = "Configurable webhook server."
 version = "0.1.0"
 authors = ["Michael Zhang <failed.down@gmail.com>"]
 
+[workspace]
+members = [".", "ext/github"]
+
 [dependencies]
 failure = "0.1"
 hyper = "0.12"

ext/github/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "github"
+version = "0.1.0"
+authors = ["Michael <localhost>"]
+
+[dependencies]

ext/github/src/lib.rs

@@ -0,0 +1,7 @@
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}

src/config.rs

@@ -0,0 +1,28 @@
+use std::path::{Path, PathBuf};
+
+pub struct Config {
+    pub root: PathBuf,
+    pub bind: String,
+    pub hook: Option<String>,
+}
+
+impl Config {
+    pub fn new(root: impl AsRef<Path>) -> Self {
+        let root = root.as_ref().to_path_buf();
+        assert!(root.exists());
+
+        let bind = "0.0.0.0:5000".to_owned();
+        let hook = None;
+        Config { root, bind, hook }
+    }
+    pub fn bind(mut self, value: Option<String>) -> Config {
+        if let Some(value) = value {
+            self.bind = value;
+        }
+        return self;
+    }
+    pub fn hook(mut self, value: Option<String>) -> Config {
+        self.hook = value;
+        return self;
+    }
+}

src/lib.rs

@@ -12,6 +12,7 @@ extern crate regex;
 extern crate toml;
 extern crate walkdir;
 
+pub mod config;
 pub mod handler;
 pub mod hook;
 
@@ -29,6 +30,7 @@ use notify::{RecommendedWatcher, RecursiveMode, Watcher};
 use regex::Regex;
 use walkdir::WalkDir;
 
+pub use config::Config;
 pub use handler::*;
 use hook::*;
 
@@ -172,13 +174,10 @@ where
 }
 
 /// Main entry point of the entire application.
-pub fn run<P>(root: P) -> Result<(), Error>
-where
-    P: AsRef<Path>,
-{
-    load_config(&root);
+pub fn run(config: &Config) -> Result<(), Error> {
+    load_config(&config.root);
 
-    let v = root.as_ref().to_path_buf();
+    let v = config.root.clone();
     thread::spawn(|| watch(v));
 
     let addr = ([127, 0, 0, 1], 3000).into();

src/main.rs

@@ -5,22 +5,28 @@ extern crate failure;
 
 use std::path::PathBuf;
 
+use dip::Config;
 use failure::Error;
 use structopt::StructOpt;
 
 #[derive(Debug, StructOpt)]
 struct Opt {
-    /// The root configuration directory for dip.
+    /// The root configuration directory for dip. This argument is required.
     #[structopt(short = "d", long = "root", parse(from_os_str))]
     root: PathBuf,
-    /// A string containing the address to bind to.
+    /// A string containing the address to bind to. This defaults to "0.0.0.0:5000".
     #[structopt(short = "b", long = "bind")]
     bind: Option<String>,
+    /// If a hook is specified here, it will be triggered manually exactly once and then the
+    /// program will exit rather than running as a server.
+    #[structopt(short = "h", long = "hook")]
+    hook: Option<String>,
 }
 
 fn main() -> Result<(), Error> {
     let opt = Opt::from_args();
     println!("{:?}", opt);
-    assert!(opt.root.exists());
-    dip::run(opt.root)
+
+    let config = Config::new(opt.root).bind(opt.bind).hook(opt.hook);
+    dip::run(&config)
 }