2022-05-24 10:16:39 +00:00
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use std::sync::Arc;
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use async_trait::async_trait;
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use futures::future::Future;
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use http::header::{
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ACCESS_CONTROL_ALLOW_METHODS, ACCESS_CONTROL_ALLOW_ORIGIN, ALLOW, CONTENT_TYPE,
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};
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use hyper::{Body, Request, Response};
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use opentelemetry::trace::{SpanRef, Tracer};
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use opentelemetry_prometheus::PrometheusExporter;
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use prometheus::{Encoder, TextEncoder};
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use garage_model::garage::Garage;
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use garage_util::error::Error as GarageError;
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use crate::generic_server::*;
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use crate::admin::bucket::*;
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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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pub struct AdminApiServer {
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garage: Arc<Garage>,
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exporter: PrometheusExporter,
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metrics_token: Option<String>,
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admin_token: Option<String>,
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}
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impl AdminApiServer {
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pub fn new(garage: Arc<Garage>) -> Self {
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let exporter = opentelemetry_prometheus::exporter().init();
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let cfg = &garage.config.admin;
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let metrics_token = cfg
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.metrics_token
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.as_ref()
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.map(|tok| format!("Bearer {}", tok));
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let admin_token = cfg
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.admin_token
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.as_ref()
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.map(|tok| format!("Bearer {}", tok));
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Self {
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garage,
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exporter,
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metrics_token,
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admin_token,
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}
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}
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pub async fn run(self, shutdown_signal: impl Future<Output = ()>) -> Result<(), GarageError> {
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if let Some(bind_addr) = self.garage.config.admin.api_bind_addr {
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let region = self.garage.config.s3_api.s3_region.clone();
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ApiServer::new(region, self)
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.run_server(bind_addr, shutdown_signal)
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.await
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} else {
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Ok(())
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}
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}
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fn handle_options(&self, _req: &Request<Body>) -> Result<Response<Body>, Error> {
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Ok(Response::builder()
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.status(204)
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.header(ALLOW, "OPTIONS, GET, POST")
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.header(ACCESS_CONTROL_ALLOW_METHODS, "OPTIONS, GET, POST")
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.header(ACCESS_CONTROL_ALLOW_ORIGIN, "*")
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.body(Body::empty())?)
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}
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fn handle_metrics(&self) -> Result<Response<Body>, Error> {
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let mut buffer = vec![];
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let encoder = TextEncoder::new();
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let tracer = opentelemetry::global::tracer("garage");
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let metric_families = tracer.in_span("admin/gather_metrics", |_| {
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self.exporter.registry().gather()
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});
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encoder
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.encode(&metric_families, &mut buffer)
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.ok_or_internal_error("Could not serialize metrics")?;
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Ok(Response::builder()
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.status(200)
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.header(CONTENT_TYPE, encoder.format_type())
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.body(Body::from(buffer))?)
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}
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}
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#[async_trait]
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impl ApiHandler for AdminApiServer {
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const API_NAME: &'static str = "admin";
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const API_NAME_DISPLAY: &'static str = "Admin";
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type Endpoint = Endpoint;
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type Error = Error;
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fn parse_endpoint(&self, req: &Request<Body>) -> Result<Endpoint, Error> {
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Endpoint::from_request(req)
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}
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async fn handle(
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&self,
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req: Request<Body>,
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endpoint: Endpoint,
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) -> Result<Response<Body>, Error> {
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let expected_auth_header =
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match endpoint.authorization_type() {
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Authorization::MetricsToken => self.metrics_token.as_ref(),
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Authorization::AdminToken => match &self.admin_token {
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None => return Err(Error::forbidden(
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"Admin token isn't configured, admin API access is disabled for security.",
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)),
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Some(t) => Some(t),
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},
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};
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if let Some(h) = expected_auth_header {
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match req.headers().get("Authorization") {
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None => return Err(Error::forbidden("Authorization token must be provided")),
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Some(v) => {
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let authorized = v.to_str().map(|hv| hv.trim() == h).unwrap_or(false);
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if !authorized {
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return Err(Error::forbidden("Invalid authorization token provided"));
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}
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}
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}
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}
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match endpoint {
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Endpoint::Options => self.handle_options(&req),
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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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Endpoint::ConnectClusterNodes => handle_connect_cluster_nodes(&self.garage, req).await,
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// Layout
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Endpoint::GetClusterLayout => handle_get_cluster_layout(&self.garage).await,
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Endpoint::UpdateClusterLayout => handle_update_cluster_layout(&self.garage, req).await,
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Endpoint::ApplyClusterLayout => handle_apply_cluster_layout(&self.garage, req).await,
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Endpoint::RevertClusterLayout => handle_revert_cluster_layout(&self.garage, req).await,
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// Keys
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Endpoint::ListKeys => handle_list_keys(&self.garage).await,
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Endpoint::GetKeyInfo { id, search } => {
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handle_get_key_info(&self.garage, id, search).await
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}
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Endpoint::CreateKey => handle_create_key(&self.garage, req).await,
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Endpoint::ImportKey => handle_import_key(&self.garage, req).await,
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Endpoint::UpdateKey { id } => handle_update_key(&self.garage, id, req).await,
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Endpoint::DeleteKey { id } => handle_delete_key(&self.garage, id).await,
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// Buckets
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Endpoint::ListBuckets => handle_list_buckets(&self.garage).await,
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Endpoint::GetBucketInfo { id, global_alias } => {
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handle_get_bucket_info(&self.garage, id, global_alias).await
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}
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Endpoint::CreateBucket => handle_create_bucket(&self.garage, req).await,
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Endpoint::DeleteBucket { id } => handle_delete_bucket(&self.garage, id).await,
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2022-06-15 18:20:28 +00:00
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Endpoint::UpdateBucket { id } => handle_update_bucket(&self.garage, id, req).await,
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2022-05-24 10:16:39 +00:00
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// Bucket-key permissions
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Endpoint::BucketAllowKey => {
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handle_bucket_change_key_perm(&self.garage, req, true).await
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}
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Endpoint::BucketDenyKey => {
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handle_bucket_change_key_perm(&self.garage, req, false).await
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}
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// Bucket aliasing
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Endpoint::GlobalAliasBucket { id, alias } => {
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handle_global_alias_bucket(&self.garage, id, alias).await
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}
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Endpoint::GlobalUnaliasBucket { id, alias } => {
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handle_global_unalias_bucket(&self.garage, id, alias).await
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}
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Endpoint::LocalAliasBucket {
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id,
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access_key_id,
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alias,
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} => handle_local_alias_bucket(&self.garage, id, access_key_id, alias).await,
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Endpoint::LocalUnaliasBucket {
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id,
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access_key_id,
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alias,
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} => handle_local_unalias_bucket(&self.garage, id, access_key_id, alias).await,
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}
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}
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}
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impl ApiEndpoint for Endpoint {
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fn name(&self) -> &'static str {
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Endpoint::name(self)
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}
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fn add_span_attributes(&self, _span: SpanRef<'_>) {}
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}
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