Merge pull request 'Support {s3,web}.root_domains for the Caddy on-demand TLS endpoint (<admin>/check?domain=xx)' (#610) from bug/support-root-domains-on-demand-tls into main
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Reviewed-on: #610
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commit
d539a56d3a
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@ -469,3 +469,6 @@ https:// {
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reverse_proxy localhost:3902 192.168.1.2:3902 example.tld:3902
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}
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```
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More information on how this endpoint is implemented in Garage is available
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in the [Admin API Reference](@/documentation/reference-manual/admin-api.md) page.
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@ -39,11 +39,95 @@ Authorization: Bearer <token>
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## Administration API endpoints
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### Metrics-related endpoints
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#### Metrics `GET /metrics`
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### Metrics `GET /metrics`
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Returns internal Garage metrics in Prometheus format.
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The metrics are directly documented when returned by the API.
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**Example:**
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```
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$ curl -i http://localhost:3903/metrics
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HTTP/1.1 200 OK
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content-type: text/plain; version=0.0.4
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content-length: 12145
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date: Tue, 08 Aug 2023 07:25:05 GMT
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# HELP api_admin_error_counter Number of API calls to the various Admin API endpoints that resulted in errors
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# TYPE api_admin_error_counter counter
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api_admin_error_counter{api_endpoint="CheckWebsiteEnabled",status_code="400"} 1
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api_admin_error_counter{api_endpoint="CheckWebsiteEnabled",status_code="404"} 3
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# HELP api_admin_request_counter Number of API calls to the various Admin API endpoints
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# TYPE api_admin_request_counter counter
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api_admin_request_counter{api_endpoint="CheckWebsiteEnabled"} 7
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api_admin_request_counter{api_endpoint="Health"} 3
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# HELP api_admin_request_duration Duration of API calls to the various Admin API endpoints
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...
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```
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### Health `GET /health`
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Returns `200 OK` if enough nodes are up to have a quorum (ie. serve requests),
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otherwise returns `503 Service Unavailable`.
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**Example:**
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```
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$ curl -i http://localhost:3903/health
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HTTP/1.1 200 OK
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content-type: text/plain
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content-length: 102
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date: Tue, 08 Aug 2023 07:22:38 GMT
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Garage is fully operational
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Consult the full health check API endpoint at /v0/health for more details
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```
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### On-demand TLS `GET /check`
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To prevent abuses for on-demand TLS, Caddy developpers have specified an endpoint that can be queried by the reverse proxy
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to know if a given domain is allowed to get a certificate. Garage implements this endpoints to tell if a given domain is handled by Garage or is garbage.
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Garage responds with the following logic:
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- If the domain matches the pattern `<bucket-name>.<s3_api.root_domain>`, returns 200 OK
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- If the domain matches the pattern `<bucket-name>.<s3_web.root_domain>` and website is configured for `<bucket>`, returns 200 OK
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- If the domain matches the pattern `<bucket-name>` and website is configured for `<bucket>`, returns 200 OK
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- Otherwise, returns 404 Not Found, 400 Bad Request or 5xx requests.
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*Note 1: because in the path-style URL mode, there is only one domain that is not known by Garage, hence it is not supported by this API endpoint.
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You must manually declare the domain in your reverse-proxy. Idem for K2V.*
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*Note 2: buckets in a user's namespace are not supported yet by this endpoint. This is a limitation of this endpoint currently.*
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**Example:** Suppose a Garage instance configured with `s3_api.root_domain = .s3.garage.localhost` and `s3_web.root_domain = .web.garage.localhost`.
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With a private `media` bucket (name in the global namespace, website is disabled), the endpoint will feature the following behavior:
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```
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$ curl -so /dev/null -w "%{http_code}" http://localhost:3903/check?domain=media.s3.garage.localhost
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200
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$ curl -so /dev/null -w "%{http_code}" http://localhost:3903/check?domain=media
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400
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$ curl -so /dev/null -w "%{http_code}" http://localhost:3903/check?domain=media.web.garage.localhost
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400
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```
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With a public `example.com` bucket (name in the global namespace, website is activated), the endpoint will feature the following behavior:
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```
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$ curl -so /dev/null -w "%{http_code}" http://localhost:3903/check?domain=example.com.s3.garage.localhost
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200
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$ curl -so /dev/null -w "%{http_code}" http://localhost:3903/check?domain=example.com
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200
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$ curl -so /dev/null -w "%{http_code}" http://localhost:3903/check?domain=example.com.web.garage.localhost
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200
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```
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**References:**
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- [Using On-Demand TLS](https://caddyserver.com/docs/automatic-https#using-on-demand-tls)
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- [Add option for a backend check to approve use of on-demand TLS](https://github.com/caddyserver/caddy/pull/1939)
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- [Serving tens of thousands of domains over HTTPS with Caddy](https://caddy.community/t/serving-tens-of-thousands-of-domains-over-https-with-caddy/11179)
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### Cluster operations
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@ -26,6 +26,7 @@ use crate::admin::cluster::*;
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use crate::admin::error::*;
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use crate::admin::key::*;
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use crate::admin::router::{Authorization, Endpoint};
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use crate::helpers::host_to_bucket;
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pub struct AdminApiServer {
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garage: Arc<Garage>,
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@ -78,10 +79,7 @@ impl AdminApiServer {
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.body(Body::empty())?)
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}
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async fn handle_check_website_enabled(
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&self,
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req: Request<Body>,
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) -> Result<Response<Body>, Error> {
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async fn handle_check_domain(&self, req: Request<Body>) -> Result<Response<Body>, Error> {
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let query_params: HashMap<String, String> = req
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.uri()
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.query()
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@ -102,12 +100,43 @@ impl AdminApiServer {
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.get("domain")
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.ok_or_internal_error("Could not parse domain query string")?;
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// Resolve bucket from domain name, inferring if the website must be activated for the
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// domain to be valid.
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let (bucket_name, must_check_website) = if let Some(bname) = self
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.garage
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.config
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.s3_api
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.root_domain
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.as_ref()
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.and_then(|rd| host_to_bucket(domain, rd))
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{
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(bname.to_string(), false)
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} else if let Some(bname) = self
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.garage
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.config
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.s3_web
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.as_ref()
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.and_then(|sw| host_to_bucket(domain, sw.root_domain.as_str()))
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{
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(bname.to_string(), true)
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} else {
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(domain.to_string(), true)
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};
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let bucket_id = self
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.garage
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.bucket_helper()
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.resolve_global_bucket_name(domain)
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.resolve_global_bucket_name(&bucket_name)
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.await?
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.ok_or(HelperError::NoSuchBucket(domain.to_string()))?;
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.ok_or(HelperError::NoSuchBucket(bucket_name.to_string()))?;
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if !must_check_website {
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return Ok(Response::builder()
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.status(StatusCode::OK)
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.body(Body::from(format!(
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"Domain '{domain}' is managed by Garage"
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)))?);
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}
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let bucket = self
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.garage
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@ -123,11 +152,11 @@ impl AdminApiServer {
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Ok(Response::builder()
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.status(StatusCode::OK)
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.body(Body::from(format!(
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"Bucket '{domain}' is authorized for website hosting"
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"Domain '{domain}' is managed by Garage"
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)))?)
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}
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None => Err(Error::bad_request(format!(
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"Bucket '{domain}' is not authorized for website hosting"
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"Domain '{domain}' is not managed by Garage"
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))),
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}
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}
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@ -229,7 +258,7 @@ impl ApiHandler for AdminApiServer {
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match endpoint {
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Endpoint::Options => self.handle_options(&req),
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Endpoint::CheckWebsiteEnabled => self.handle_check_website_enabled(req).await,
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Endpoint::CheckDomain => self.handle_check_domain(req).await,
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Endpoint::Health => self.handle_health(),
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Endpoint::Metrics => self.handle_metrics(),
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Endpoint::GetClusterStatus => handle_get_cluster_status(&self.garage).await,
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@ -17,7 +17,7 @@ router_match! {@func
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#[derive(Debug, Clone, PartialEq, Eq)]
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pub enum Endpoint {
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Options,
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CheckWebsiteEnabled,
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CheckDomain,
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Health,
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Metrics,
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GetClusterStatus,
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@ -92,7 +92,7 @@ impl Endpoint {
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let res = router_match!(@gen_path_parser (req.method(), path, query) [
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OPTIONS _ => Options,
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GET "/check" => CheckWebsiteEnabled,
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GET "/check" => CheckDomain,
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GET "/health" => Health,
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GET "/metrics" => Metrics,
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GET "/v0/status" => GetClusterStatus,
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@ -138,7 +138,7 @@ impl Endpoint {
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pub fn authorization_type(&self) -> Authorization {
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match self {
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Self::Health => Authorization::None,
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Self::CheckWebsiteEnabled => Authorization::None,
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Self::CheckDomain => Authorization::None,
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Self::Metrics => Authorization::MetricsToken,
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_ => Authorization::AdminToken,
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}
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@ -72,7 +72,7 @@ async fn test_website() {
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res_body,
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json!({
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"code": "InvalidRequest",
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"message": "Bad request: Bucket 'my-website' is not authorized for website hosting",
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"message": "Bad request: Domain 'my-website' is not managed by Garage",
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"region": "garage-integ-test",
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"path": "/check",
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})
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@ -91,24 +91,29 @@ async fn test_website() {
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BODY.as_ref()
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);
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let admin_req = || {
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Request::builder()
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.method("GET")
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.uri(format!(
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"http://127.0.0.1:{0}/check?domain={1}",
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ctx.garage.admin_port,
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BCKT_NAME.to_string()
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))
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.body(Body::empty())
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.unwrap()
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};
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for bname in [
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BCKT_NAME.to_string(),
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format!("{BCKT_NAME}.web.garage"),
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format!("{BCKT_NAME}.s3.garage"),
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] {
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let admin_req = || {
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Request::builder()
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.method("GET")
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.uri(format!(
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"http://127.0.0.1:{0}/check?domain={1}",
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ctx.garage.admin_port, bname
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))
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.body(Body::empty())
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.unwrap()
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};
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let mut admin_resp = client.request(admin_req()).await.unwrap();
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assert_eq!(admin_resp.status(), StatusCode::OK);
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assert_eq!(
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to_bytes(admin_resp.body_mut()).await.unwrap().as_ref(),
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format!("Bucket '{BCKT_NAME}' is authorized for website hosting").as_bytes()
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);
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let mut admin_resp = client.request(admin_req()).await.unwrap();
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assert_eq!(admin_resp.status(), StatusCode::OK);
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assert_eq!(
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to_bytes(admin_resp.body_mut()).await.unwrap().as_ref(),
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format!("Domain '{bname}' is managed by Garage").as_bytes()
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);
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}
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ctx.garage
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.command()
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@ -142,7 +147,7 @@ async fn test_website() {
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res_body,
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json!({
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"code": "InvalidRequest",
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"message": "Bad request: Bucket 'my-website' is not authorized for website hosting",
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"message": "Bad request: Domain 'my-website' is not managed by Garage",
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"region": "garage-integ-test",
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"path": "/check",
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})
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@ -397,7 +402,7 @@ async fn test_website_s3_api() {
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}
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#[tokio::test]
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async fn test_website_check_website_enabled() {
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async fn test_website_check_domain() {
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let ctx = common::context();
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let client = Client::new();
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