environment.rs successfully replaced with new config/ configuration loader. No API changes, more tests, cleaner code: life is swell.

.gitignore

@@ -1,2 +1,3 @@
 target/
 *.swp
+.env

src/config/options.rs

@@ -9,7 +9,7 @@ use crate::config::RuntimeConfig;
 // runtime.rs applies business logic and builds RuntimeConfig structs.
 
 /// Base configuration options
-#[derive(Clone, Debug, Default, Deserialize)]
+#[derive(Clone, Default, Deserialize)]
 pub struct ConfigOptsBase {
 	/// This node's private IP address [default: None]
 	pub private_ip: Option<String>,
@@ -20,7 +20,7 @@ pub struct ConfigOptsBase {
 }
 
 /// ACME configuration options
-#[derive(Clone, Debug, Default, Deserialize)]
+#[derive(Clone, Default, Deserialize)]
 pub struct ConfigOptsAcme {
 	/// Whether ACME is enabled [default: false]
 	#[serde(default)]
@@ -31,7 +31,7 @@ pub struct ConfigOptsAcme {
 }
 
 /// Consul configuration options
-#[derive(Clone, Debug, Default, Deserialize)]
+#[derive(Clone, Default, Deserialize)]
 pub struct ConfigOptsConsul {
 	/// Consul's node name [default: None]
 	pub node_name: Option<String>,
@@ -40,7 +40,6 @@ pub struct ConfigOptsConsul {
 }
 
 /// Model of all potential configuration options
-#[derive(Debug)]
 pub struct ConfigOpts {
 	pub base: ConfigOptsBase,
 	pub acme: ConfigOptsAcme,

src/config/runtime.rs

@@ -9,25 +9,30 @@ use crate::config::{ConfigOpts, ConfigOptsAcme, ConfigOptsBase, ConfigOptsConsul
 // In this file, we take ConfigOpts and transform them into ready-to-use RuntimeConfig.
 // We apply default values and business logic.
 
+#[derive(Debug)]
 pub struct RuntimeConfigAcme {
 	pub email: String,
 }
 
+#[derive(Debug)]
 pub struct RuntimeConfigConsul {
 	pub node_name: String,
 	pub url: String,
 }
 
+#[derive(Debug)]
 pub struct RuntimeConfigFirewall {
 	pub refresh_time: Duration,
 }
 
+#[derive(Debug)]
 pub struct RuntimeConfigIgd {
 	pub private_ip: String,
 	pub expiration_time: Duration,
 	pub refresh_time: Duration,
 }
 
+#[derive(Debug)]
 pub struct RuntimeConfig {
 	pub acme: Option<RuntimeConfigAcme>,
 	pub consul: RuntimeConfigConsul,
@@ -57,7 +62,9 @@ impl RuntimeConfigAcme {
 			return Ok(None);
 		}
 
-		let email = opts.email.unwrap();
+		let email = opts.email.expect(
+			"'DIPLONAT_ACME_EMAIL' environment variable is required \
+			if 'DIPLONAT_ACME_ENABLE' == 'true'");
 
 		Ok(Some(Self {
 			email,
@@ -67,7 +74,8 @@ impl RuntimeConfigAcme {
 
 impl RuntimeConfigConsul {
 	pub(super) fn new(opts: ConfigOptsConsul) -> Result<Self> {
-		let node_name = opts.node_name.unwrap();
+		let node_name = opts.node_name.expect(
+			"'DIPLONAT_CONSUL_NODE_NAME' environment variable is required");
 		let url = opts.url.unwrap_or(super::CONSUL_URL.to_string());
 
 		Ok(Self {
@@ -90,7 +98,8 @@ impl RuntimeConfigFirewall {
 
 impl RuntimeConfigIgd {
 	pub(super) fn new(opts: ConfigOptsBase) -> Result<Self> {
-		let private_ip = opts.private_ip.unwrap();
+		let private_ip = opts.private_ip.expect(
+			"'DIPLONAT_PRIVATE_IP' environment variable is required");
 		let expiration_time = Duration::from_secs(
 				opts.expiration_time.unwrap_or(super::EXPIRATION_TIME).into());
 		let refresh_time = Duration::from_secs(

src/diplonat.rs

@@ -1,29 +1,33 @@
 use anyhow::Result;
 use tokio::try_join;
+
+use crate::config::ConfigOpts;
 use crate::consul_actor::ConsulActor;
-use crate::igd_actor::IgdActor;
-use crate::environment::Environment;
 use crate::fw_actor::FirewallActor;
+use crate::igd_actor::IgdActor;
 
 pub struct Diplonat {
   consul: ConsulActor,
+  firewall: FirewallActor,
   igd: IgdActor,
-  firewall: FirewallActor
 }
 
 impl Diplonat {
   pub async fn new() -> Result<Self> {
-    let env = Environment::new()?;
-    let ca = ConsulActor::new(&env.consul_url, &env.consul_node_name);
-    let ia = IgdActor::new(
-      &env.private_ip, 
-      env.refresh_time, 
-      env.expiration_time, 
+    let rt_cfg = ConfigOpts::from_env()?;
+    println!("{:#?}", rt_cfg);
+    
+    let ca = ConsulActor::new(&rt_cfg.consul.url, &rt_cfg.consul.node_name);
+
+    let fw = FirewallActor::new(
+        rt_cfg.firewall.refresh_time,
         &ca.rx_open_ports
     ).await?;
     
-    let fw = FirewallActor::new(
-        env.refresh_time,
+    let ia = IgdActor::new(
+      &rt_cfg.igd.private_ip, 
+      rt_cfg.igd.refresh_time, 
+      rt_cfg.igd.expiration_time, 
       &ca.rx_open_ports
     ).await?;
 

src/environment.rs

@@ -1,56 +0,0 @@
-use std::env;
-use anyhow::{Result, Context, anyhow};
-use std::time::Duration;
-use log::*;
-
-const epi: &'static str = "DIPLONAT_PRIVATE_IP";
-const ert: &'static str = "DIPLONAT_REFRESH_TIME";
-const eet: &'static str = "DIPLONAT_EXPIRATION_TIME";
-const ecnd: &'static str = "DIPLONAT_CONSUL_NODE_NAME";
-const ecu: &'static str = "DIPLONAT_CONSUL_URL";
-
-pub struct Environment {
-   pub consul_node_name: String,
-   pub consul_url: String,
-   
-   pub refresh_time: Duration,
-   pub expiration_time: Duration,
-
-   pub private_ip: String,
-}
-
-/* @FIXME: Rewrite with Serde Envi */
-impl Environment {
-  pub fn new() -> Result<Self> {
-    let ctx = Self {
-      consul_url: match env::var(ecu) { Ok(e) => e, Err(_) => "http://127.0.0.1:8500".to_string() },
-      consul_node_name: env::var(ecnd).with_context(|| format!("{} env var must be defined", ecnd))?,
-      private_ip: env::var(epi).with_context(|| format!("{} env var must be defined, eg: 192.168.0.18", epi))?,
-      refresh_time: Duration::from_secs(env::var(ert)
-        .with_context(|| format!("{} env var must be defined, eg: 60", ert))?
-        .parse()
-        .with_context(|| format!("{} env var must be an integer, eg: 60", ert))?),
-      expiration_time: Duration::from_secs(env::var(eet)
-        .with_context(|| format!("{} env var must be defined, eg: 300", eet))?
-        .parse()
-        .with_context(|| format!("{} env var must be an integer, eg: 300", eet))?),
-    };
-
-    if ctx.refresh_time.as_secs() * 2 > ctx.expiration_time.as_secs() {
-      return Err(anyhow!(
-        "Expiration time (currently: {}s) must be twice bigger than refresh time (currently: {}s)", 
-        ctx.refresh_time.as_secs(), 
-        ctx.expiration_time.as_secs()));
-    }
-
-    info!("Consul URL: {:#?}", ctx.consul_url);
-    info!("Consul node name: {:#?}", ctx.consul_node_name);
-    info!("Private IP address: {:#?}", ctx.private_ip);
-    info!("Refresh time: {:#?} seconds", ctx.refresh_time.as_secs());
-    info!("Expiration time: {:#?} seconds", ctx.expiration_time.as_secs());
-    
-    return Ok(ctx);
-  }
-}
-
-

src/igd_actor.rs

@@ -25,8 +25,8 @@ impl IgdActor {
   pub async fn new(priv_ip: &str, refresh: Duration, expire: Duration, rxp: &watch::Receiver<messages::PublicExposedPorts>) -> Result<Self> {
     let gw = search_gateway(Default::default())
               .await
-              .context("Failed to find gateway")?;
-    info!("Gateway: {}", gw);
+              .context("Failed to find IGD gateway")?;
+    info!("IGD gateway: {}", gw);
 
     let ctx = Self { 
       gateway: gw,

src/main.rs

@@ -2,7 +2,6 @@ mod config;
 mod consul;
 mod consul_actor;
 mod diplonat;
-mod environment;
 mod fw;
 mod fw_actor;
 mod igd_actor;