initial commit

.env

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+CR_DATABASE="mysql://localhost/cipher_relay"
+
+# This is only for sqlx compile time checks
+DATABASE_URL="mysql://localhost/cipher_relay"

.gitignore

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+/target
+.idea

Cargo.toml

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+[package]
+name = "cipher-relay"
+version = "0.1.0"
+edition = "2021"
+authors = ["antifallobst"]
+license = "MIT"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.81"
+log = "0.4.21"
+env_logger = "0.11.3"
+dotenv = "0.15.0"
+
+actix-web = "4.5.1"
+sqlx = { version = "0.7.4", features = ["runtime-tokio", "tls-native-tls"] }

LICENSE

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+Copyright 2023 antifallobst <antifallobst@systemausfall.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the “Software”), to deal in
+the Software without restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

src/config.rs

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+use anyhow::{bail, Result};
+use log::info;
+use std::env;
+
+#[derive(Debug)]
+pub struct Config {
+    addr: String,
+    port: u16,
+    database: String,
+}
+
+impl Config {
+    /// Loads the configuration from environment variables
+    pub fn from_env() -> Result<Self> {
+        Ok(Self {
+            addr: env::var("CR_ADDRESS").unwrap_or_else(|_| {
+                info!("Using default address 0.0.0.0");
+                "0.0.0.0".to_string()
+            }),
+            port: match env::var("CR_PORT") {
+                Ok(str) => match str.parse() {
+                    Ok(port) => port,
+                    Err(_) => bail!("Failed to parse environment variable CR_PORT: '{str}' is not a valid port number!"),
+                },
+                Err(_) => { info!("Using default port 42069"); 42069 }
+            },
+            database: match env::var("CR_DATABASE") {
+                Ok(db) => db,
+                Err(_) => bail!("The environment variable CR_DATABASE is required!"),
+            }
+        })
+    }
+}

src/main.rs

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+mod config;
+
+use anyhow::Result;
+use config::Config;
+use log::info;
+
+#[actix_web::main]
+async fn main() -> Result<()> {
+    dotenv::dotenv()?;
+    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
+
+    info!("Starting Cipher Relay (v{} - )", env!("CARGO_PKG_VERSION"));
+
+    let config = Config::from_env()?;
+
+    println!("{config:#?}");
+
+    Ok(())
+}