Create base Rust project

src/app_config.rs

@@ -0,0 +1,160 @@
+use clap::Parser;
+use s3::creds::Credentials;
+use s3::{Bucket, Region};
+
+/// GeneIT backend API
+#[derive(Parser, Debug, Clone)]
+#[clap(author, version, about, long_about = None)]
+pub struct AppConfig {
+    /// Listen address
+    #[clap(short, long, env, default_value = "0.0.0.0:8000")]
+    pub listen_address: String,
+
+    /// Website origin
+    #[clap(short, long, env, default_value = "http://localhost:8000")]
+    pub website_origin: String,
+
+    /// Proxy IP, might end with a star "*"
+    #[clap(short, long, env)]
+    pub proxy_ip: Option<String>,
+
+    /// Matrix API origin
+    #[clap(short, long, env, default_value = "http://127.0.0.1:8448")]
+    pub matrix_api: String,
+
+    /// Redis connection hostname
+    #[clap(long, env, default_value = "localhost")]
+    redis_hostname: String,
+
+    /// Redis connection port
+    #[clap(long, env, default_value_t = 6379)]
+    redis_port: u16,
+
+    /// Redis database number
+    #[clap(long, env, default_value_t = 0)]
+    redis_db_number: i64,
+
+    /// Redis username
+    #[clap(long, env)]
+    redis_username: Option<String>,
+
+    /// Redis password
+    #[clap(long, env, default_value = "secretredis")]
+    redis_password: String,
+
+    /// URL where the OpenID configuration can be found
+    #[arg(
+        long,
+        env,
+        default_value = "http://localhost:9001/dex/.well-known/openid-configuration"
+    )]
+    pub oidc_configuration_url: String,
+
+    /// OpenID client ID
+    #[arg(long, env, default_value = "foo")]
+    pub oidc_client_id: String,
+
+    /// OpenID client secret
+    #[arg(long, env, default_value = "bar")]
+    pub oidc_client_secret: String,
+
+    /// OpenID login redirect URL
+    #[arg(long, env, default_value = "APP_ORIGIN/oidc_cb")]
+    oidc_redirect_url: String,
+
+    /// S3 Bucket name
+    #[arg(long, env, default_value = "matrix-gw")]
+    s3_bucket_name: String,
+
+    /// S3 region (if not using Minio)
+    #[arg(long, env, default_value = "eu-central-1")]
+    s3_region: String,
+
+    /// S3 API endpoint
+    #[arg(long, env, default_value = "http://localhost:9000")]
+    s3_endpoint: String,
+
+    /// S3 access key
+    #[arg(long, env, default_value = "topsecret")]
+    s3_access_key: String,
+
+    /// S3 secret key
+    #[arg(long, env, default_value = "topsecret")]
+    s3_secret_key: String,
+
+    /// S3 skip auto create bucket if not existing
+    #[arg(long, env)]
+    pub s3_skip_auto_create_bucket: bool,
+}
+
+lazy_static::lazy_static! {
+    static ref ARGS: AppConfig = {
+        AppConfig::parse()
+    };
+}
+
+impl AppConfig {
+    /// Get parsed command line arguments
+    pub fn get() -> &'static AppConfig {
+        &ARGS
+    }
+
+    /// Get Redis connection configuration
+    pub fn redis_connection_config(&self) -> redis::ConnectionInfo {
+        redis::ConnectionInfo {
+            addr: redis::ConnectionAddr::Tcp(self.redis_hostname.clone(), self.redis_port),
+            redis: redis::RedisConnectionInfo {
+                db: self.redis_db_number,
+                username: self.redis_username.clone(),
+                password: Some(self.redis_password.clone()),
+                protocol: Default::default(),
+            },
+        }
+    }
+
+    /// Get OpenID providers configuration
+    pub fn openid_providers(&self) -> OIDCProvider<'_> {
+        OIDCProvider {
+            client_id: self.oidc_client_id.as_str(),
+            client_secret: self.oidc_client_secret.as_str(),
+            configuration_url: self.oidc_configuration_url.as_str(),
+        }
+    }
+
+    /// Get OIDC callback URL
+    pub fn oidc_redirect_url(&self) -> String {
+        self.oidc_redirect_url
+            .replace("APP_ORIGIN", &self.website_origin)
+    }
+
+    /// Get s3 bucket credentials
+    pub fn s3_credentials(&self) -> anyhow::Result<Credentials> {
+        Ok(Credentials::new(
+            Some(&self.s3_access_key),
+            Some(&self.s3_secret_key),
+            None,
+            None,
+            None,
+        )?)
+    }
+
+    /// Get S3 bucket
+    pub fn s3_bucket(&self) -> anyhow::Result<Box<Bucket>> {
+        Ok(Bucket::new(
+            &self.s3_bucket_name,
+            Region::Custom {
+                region: self.s3_region.to_string(),
+                endpoint: self.s3_endpoint.to_string(),
+            },
+            self.s3_credentials()?,
+        )?
+        .with_path_style())
+    }
+}
+
+#[derive(Debug, Clone, serde::Serialize)]
+pub struct OIDCProvider<'a> {
+    pub client_id: &'a str,
+    pub client_secret: &'a str,
+    pub configuration_url: &'a str,
+}

src/lib.rs

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+pub mod app_config;

src/main.rs

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+use actix_web::{get, post, web, App, HttpResponse, HttpServer, Responder};
+use matrix_gateway::app_config::AppConfig;
+
+async fn home() -> HttpResponse {
+    HttpResponse::Ok().body("Hey there!")
+}
+
+#[actix_web::main]
+async fn main() -> std::io::Result<()> {
+    env_logger::init_from_env(env_logger::Env::new().default_filter_or("info"));
+
+    log::info!(
+        "Starting to listen on {} for {}",
+        AppConfig::get().listen_address,
+        AppConfig::get().website_origin
+    );
+    HttpServer::new(|| {
+        App::new()
+            // Web configuration routes
+            .route("/", web::get().to(home))
+
+        // API routes
+        // TODO
+    })
+    .bind(&AppConfig::get().listen_address)?
+    .run()
+    .await
+}