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|
use std::sync::Arc;
use http::header::{
ACCESS_CONTROL_ALLOW_HEADERS, ACCESS_CONTROL_ALLOW_METHODS, ACCESS_CONTROL_ALLOW_ORIGIN, ALLOW,
};
use hyper::{Response, StatusCode};
#[cfg(feature = "metrics")]
use prometheus::{Encoder, TextEncoder};
use garage_model::garage::Garage;
use garage_rpc::system::ClusterHealthStatus;
use garage_api_common::helpers::*;
use crate::api::{CheckDomainRequest, HealthRequest, MetricsRequest, OptionsRequest};
use crate::api_server::ResBody;
use crate::error::*;
use crate::{Admin, RequestHandler};
impl RequestHandler for OptionsRequest {
type Response = Response<ResBody>;
async fn handle(
self,
_garage: &Arc<Garage>,
_admin: &Admin,
) -> Result<Response<ResBody>, Error> {
Ok(Response::builder()
.status(StatusCode::OK)
.header(ALLOW, "OPTIONS,GET,POST")
.header(ACCESS_CONTROL_ALLOW_METHODS, "OPTIONS,GET,POST")
.header(ACCESS_CONTROL_ALLOW_HEADERS, "authorization,content-type")
.header(ACCESS_CONTROL_ALLOW_ORIGIN, "*")
.body(empty_body())?)
}
}
impl RequestHandler for MetricsRequest {
type Response = Response<ResBody>;
async fn handle(
self,
_garage: &Arc<Garage>,
admin: &Admin,
) -> Result<Response<ResBody>, Error> {
#[cfg(feature = "metrics")]
{
use opentelemetry::trace::Tracer;
let mut buffer = vec![];
let encoder = TextEncoder::new();
let tracer = opentelemetry::global::tracer("garage");
let metric_families = tracer.in_span("admin/gather_metrics", |_| {
admin.exporter.registry().gather()
});
encoder
.encode(&metric_families, &mut buffer)
.ok_or_internal_error("Could not serialize metrics")?;
Ok(Response::builder()
.status(StatusCode::OK)
.header(http::header::CONTENT_TYPE, encoder.format_type())
.body(bytes_body(buffer.into()))?)
}
#[cfg(not(feature = "metrics"))]
Err(Error::bad_request(
"Garage was built without the metrics feature".to_string(),
))
}
}
impl RequestHandler for HealthRequest {
type Response = Response<ResBody>;
async fn handle(
self,
garage: &Arc<Garage>,
_admin: &Admin,
) -> 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))?)
}
}
impl RequestHandler for CheckDomainRequest {
type Response = Response<ResBody>;
async fn handle(
self,
garage: &Arc<Garage>,
_admin: &Admin,
) -> 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),
}
}
|
