admin api: new router_v2 with unified path syntax

src/api/admin/special.rs

@@ -0,0 +1,129 @@
+use std::sync::Arc;
+
+use async_trait::async_trait;
+
+use http::header::{ACCESS_CONTROL_ALLOW_METHODS, ACCESS_CONTROL_ALLOW_ORIGIN, ALLOW};
+use hyper::{Response, StatusCode};
+
+use garage_model::garage::Garage;
+use garage_rpc::system::ClusterHealthStatus;
+
+use crate::admin::api::{CheckDomainRequest, HealthRequest, OptionsRequest};
+use crate::admin::api_server::ResBody;
+use crate::admin::error::*;
+use crate::admin::EndpointHandler;
+use crate::helpers::*;
+
+#[async_trait]
+impl EndpointHandler for OptionsRequest {
+	type Response = Response<ResBody>;
+
+	async fn handle(self, _garage: &Arc<Garage>) -> Result<Response<ResBody>, Error> {
+		Ok(Response::builder()
+			.status(StatusCode::NO_CONTENT)
+			.header(ALLOW, "OPTIONS, GET, POST")
+			.header(ACCESS_CONTROL_ALLOW_METHODS, "OPTIONS, GET, POST")
+			.header(ACCESS_CONTROL_ALLOW_ORIGIN, "*")
+			.body(empty_body())?)
+	}
+}
+
+#[async_trait]
+impl EndpointHandler for CheckDomainRequest {
+	type Response = Response<ResBody>;
+
+	async fn handle(self, garage: &Arc<Garage>) -> Result<Response<ResBody>, Error> {
+		if check_domain(garage, &self.domain).await? {
+			Ok(Response::builder()
+				.status(StatusCode::OK)
+				.body(string_body(format!(
+					"Domain '{}' is managed by Garage",
+					self.domain
+				)))?)
+		} else {
+			Err(Error::bad_request(format!(
+				"Domain '{}' is not managed by Garage",
+				self.domain
+			)))
+		}
+	}
+}
+
+async fn check_domain(garage: &Arc<Garage>, domain: &str) -> Result<bool, Error> {
+	// Resolve bucket from domain name, inferring if the website must be activated for the
+	// domain to be valid.
+	let (bucket_name, must_check_website) = if let Some(bname) = garage
+		.config
+		.s3_api
+		.root_domain
+		.as_ref()
+		.and_then(|rd| host_to_bucket(domain, rd))
+	{
+		(bname.to_string(), false)
+	} else if let Some(bname) = garage
+		.config
+		.s3_web
+		.as_ref()
+		.and_then(|sw| host_to_bucket(domain, sw.root_domain.as_str()))
+	{
+		(bname.to_string(), true)
+	} else {
+		(domain.to_string(), true)
+	};
+
+	let bucket_id = match garage
+		.bucket_helper()
+		.resolve_global_bucket_name(&bucket_name)
+		.await?
+	{
+		Some(bucket_id) => bucket_id,
+		None => return Ok(false),
+	};
+
+	if !must_check_website {
+		return Ok(true);
+	}
+
+	let bucket = garage
+		.bucket_helper()
+		.get_existing_bucket(bucket_id)
+		.await?;
+
+	let bucket_state = bucket.state.as_option().unwrap();
+	let bucket_website_config = bucket_state.website_config.get();
+
+	match bucket_website_config {
+		Some(_v) => Ok(true),
+		None => Ok(false),
+	}
+}
+
+#[async_trait]
+impl EndpointHandler for HealthRequest {
+	type Response = Response<ResBody>;
+
+	async fn handle(self, garage: &Arc<Garage>) -> Result<Response<ResBody>, Error> {
+		let health = garage.system.health();
+
+		let (status, status_str) = match health.status {
+			ClusterHealthStatus::Healthy => (StatusCode::OK, "Garage is fully operational"),
+			ClusterHealthStatus::Degraded => (
+				StatusCode::OK,
+				"Garage is operational but some storage nodes are unavailable",
+			),
+			ClusterHealthStatus::Unavailable => (
+				StatusCode::SERVICE_UNAVAILABLE,
+				"Quorum is not available for some/all partitions, reads and writes will fail",
+			),
+		};
+		let status_str = format!(
+			"{}\nConsult the full health check API endpoint at /v2/GetClusterHealth for more details\n",
+			status_str
+		);
+
+		Ok(Response::builder()
+			.status(status)
+			.header(http::header::CONTENT_TYPE, "text/plain")
+			.body(string_body(status_str))?)
+	}
+}