Adding health encdpoint

* Reorgnaized to use router for the actix_web::App factory
*Inlined the version from the cargo metadata
* Changed the project name to rsddns
* Added a healthcheck function
* Added dependencies serde and serde_derive
* Added build configuration to the release profile to shrink binary

.gitlab-ci.yml

@@ -17,7 +17,7 @@ debug:
     - cargo build
   artifacts:
     paths:
-      - target/debug/ddns
+      - target/debug/rsddns
   tags:
     - docker
 
@@ -26,9 +26,9 @@ release:
   stage: build
   script:
     - cargo build --release
-    - strip target/release/ddns
+    - strip target/release/rsddns
   artifacts:
     paths:
-      - target/release/ddns
+      - target/release/rsddns
   tags:
     - docker

Cargo.lock

@@ -360,16 +360,6 @@ dependencies = [
  "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "ddns"
-version = "0.1.0"
-dependencies = [
- "actix-web 0.7.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cloudflare 0.1.0 (git+https://github.com/nocduro/cloudflare-rs)",
- "yaml-rust 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "dtoa"
 version = "0.4.3"
@@ -1113,6 +1103,18 @@ dependencies = [
  "untrusted 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rsddns"
+version = "0.1.0"
+dependencies = [
+ "actix-web 0.7.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cloudflare 0.1.0 (git+https://github.com/nocduro/cloudflare-rs)",
+ "serde 1.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "yaml-rust 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.9"

Cargo.toml

@@ -1,10 +1,18 @@
 [package]
-name = "ddns"
+name = "rsddns"
 version = "0.1.0"
 authors = ["Drew Short <warrick@sothr.com>"]
 
+[profile.release]
+panic = "abort"
+lto = true
+codegen-units = 1
+incremental = false
+
 [dependencies]
 clap = "2.32.0"
 yaml-rust = "0.4.0"
+serde = "1.0.78"
+serde_derive = "1.0.78"
 actix-web = "0.7.7"
 cloudflare = { git = "https://github.com/nocduro/cloudflare-rs", branch = "master" }

src/main.rs

@@ -1,13 +1,20 @@
+#[macro_use]
+extern crate serde_derive;
+
 extern crate actix_web;
 extern crate clap;
+extern crate serde;
 
 use clap::{App, Arg};
 
+mod router;
 mod server;
 
+const VERSION: &'static str = env!("CARGO_PKG_VERSION");
+
 fn main() {
     let args = App::new("Dynamic DNS Server")
-        .version("0.1")
+        .version(VERSION)
         .author("Drew Short <warrick@sothr.com>")
         .about("Recieve DDNS requests and update cloudflare subdomains")
         .arg(
@@ -37,7 +44,7 @@ fn main() {
 
     println!("Starting server on {} with config {}", port, config);
 
-    actix_web::server::new(|| actix_web::App::new().resource("/", |r| r.f(server::index)))
+    actix_web::server::new(|| router::create())
         .bind(format!("localhost:{}", port))
         .unwrap()
         .run();

src/router.rs

@@ -0,0 +1,13 @@
+extern crate actix_web;
+
+use actix_web::{http, App};
+
+use server;
+
+pub fn create() -> App {
+    actix_web::App::new()
+        .resource("/", |r| r.f(server::index))
+        .resource("/health", |r| {
+            r.method(http::Method::GET).with(server::healthcheck)
+        })
+}

src/server.rs

@@ -1,7 +0,0 @@
-extern crate actix_web;
-
-use actix_web::HttpRequest;
-
-pub fn index(_req: &HttpRequest) -> &'static str {
-    "Hello, World!"
-}

src/server/mod.rs

@@ -0,0 +1,16 @@
+use actix_web::{HttpRequest, Json, Result};
+
+use VERSION;
+
+#[derive(Serialize)]
+pub struct Health {
+    version: &'static str,
+}
+
+pub fn index(_req: &HttpRequest) -> &'static str {
+    "Hello, World!"
+}
+
+pub fn healthcheck(_req: HttpRequest) -> Result<Json<Health>> {
+    Ok(Json(Health { version: VERSION }))
+}