mirror of
https://git.deuxfleurs.fr/Deuxfleurs/garage.git
synced 2024-11-25 09:31:00 +00:00
Implement /health admin API endpoint to check node health
This commit is contained in:
Alex Auvolat
parent
243b7c9a1c
commit
2065f011ca
4 changed files with 103 additions and 0 deletions
|
|
@ -1,3 +1,5 @@
|
|||
use std::collections::HashMap;
|
||||
use std::fmt::Write;
|
||||
use std::net::SocketAddr;
|
||||
use std::sync::Arc;
|
||||
|
||||
|
|
@ -15,6 +17,8 @@ use opentelemetry_prometheus::PrometheusExporter;
|
|||
use prometheus::{Encoder, TextEncoder};
|
||||
|
||||
use garage_model::garage::Garage;
|
||||
use garage_rpc::layout::NodeRoleV;
|
||||
use garage_util::data::Uuid;
|
||||
use garage_util::error::Error as GarageError;
|
||||
|
||||
use crate::generic_server::*;
|
||||
|
|
@ -76,6 +80,94 @@ impl AdminApiServer {
|
|||
.body(Body::empty())?)
|
||||
}
|
||||
|
||||
fn handle_health(&self) -> Result<Response<Body>, Error> {
|
||||
let ring: Arc<_> = self.garage.system.ring.borrow().clone();
|
||||
let quorum = self.garage.replication_mode.write_quorum();
|
||||
let replication_factor = self.garage.replication_mode.replication_factor();
|
||||
|
||||
let nodes = self
|
||||
.garage
|
||||
.system
|
||||
.get_known_nodes()
|
||||
.into_iter()
|
||||
.map(|n| (n.id, n))
|
||||
.collect::<HashMap<Uuid, _>>();
|
||||
let n_nodes_connected = nodes.iter().filter(|(_, n)| n.is_up).count();
|
||||
|
||||
let storage_nodes = ring
|
||||
.layout
|
||||
.roles
|
||||
.items()
|
||||
.iter()
|
||||
.filter(|(_, _, v)| matches!(v, NodeRoleV(Some(r)) if r.capacity.is_some()))
|
||||
.collect::<Vec<_>>();
|
||||
let n_storage_nodes_ok = storage_nodes
|
||||
.iter()
|
||||
.filter(|(x, _, _)| nodes.get(x).map(|n| n.is_up).unwrap_or(false))
|
||||
.count();
|
||||
|
||||
let partitions = ring.partitions();
|
||||
let partitions_n_up = partitions
|
||||
.iter()
|
||||
.map(|(_, h)| {
|
||||
let pn = ring.get_nodes(h, ring.replication_factor);
|
||||
pn.iter()
|
||||
.filter(|x| nodes.get(x).map(|n| n.is_up).unwrap_or(false))
|
||||
.count()
|
||||
})
|
||||
.collect::<Vec<usize>>();
|
||||
let n_partitions_full_ok = partitions_n_up
|
||||
.iter()
|
||||
.filter(|c| **c == replication_factor)
|
||||
.count();
|
||||
let n_partitions_quorum = partitions_n_up.iter().filter(|c| **c >= quorum).count();
|
||||
|
||||
let (status, status_str) = if n_partitions_quorum == partitions.len()
|
||||
&& n_storage_nodes_ok == storage_nodes.len()
|
||||
{
|
||||
(StatusCode::OK, "Garage is fully operational")
|
||||
} else if n_partitions_quorum == partitions.len() {
|
||||
(
|
||||
StatusCode::OK,
|
||||
"Garage is operational but some storage nodes are unavailable",
|
||||
)
|
||||
} else {
|
||||
(
|
||||
StatusCode::SERVICE_UNAVAILABLE,
|
||||
"Quorum is not available for some/all partitions, reads and writes will fail",
|
||||
)
|
||||
};
|
||||
|
||||
let mut buf = status_str.to_string();
|
||||
writeln!(
|
||||
&mut buf,
|
||||
"\nAll nodes: {} connected, {} known",
|
||||
n_nodes_connected,
|
||||
nodes.len()
|
||||
)
|
||||
.unwrap();
|
||||
writeln!(
|
||||
&mut buf,
|
||||
"Storage nodes: {} connected, {} in layout",
|
||||
n_storage_nodes_ok,
|
||||
storage_nodes.len()
|
||||
)
|
||||
.unwrap();
|
||||
writeln!(&mut buf, "Number of partitions: {}", partitions.len()).unwrap();
|
||||
writeln!(&mut buf, "Partitions with quorum: {}", n_partitions_quorum).unwrap();
|
||||
writeln!(
|
||||
&mut buf,
|
||||
"Partitions with all nodes available: {}",
|
||||
n_partitions_full_ok
|
||||
)
|
||||
.unwrap();
|
||||
|
||||
Ok(Response::builder()
|
||||
.status(status)
|
||||
.header(http::header::CONTENT_TYPE, "text/plain")
|
||||
.body(Body::from(buf))?)
|
||||
}
|
||||
|
||||
fn handle_metrics(&self) -> Result<Response<Body>, Error> {
|
||||
#[cfg(feature = "metrics")]
|
||||
{
|
||||
|
|
@ -124,6 +216,7 @@ impl ApiHandler for AdminApiServer {
|
|||
) -> Result<Response<Body>, Error> {
|
||||
let expected_auth_header =
|
||||
match endpoint.authorization_type() {
|
||||
Authorization::None => None,
|
||||
Authorization::MetricsToken => self.metrics_token.as_ref(),
|
||||
Authorization::AdminToken => match &self.admin_token {
|
||||
None => return Err(Error::forbidden(
|
||||
|
|
@ -147,6 +240,7 @@ impl ApiHandler for AdminApiServer {
|
|||
|
||||
match endpoint {
|
||||
Endpoint::Options => self.handle_options(&req),
|
||||
Endpoint::Health => self.handle_health(),
|
||||
Endpoint::Metrics => self.handle_metrics(),
|
||||
Endpoint::GetClusterStatus => handle_get_cluster_status(&self.garage).await,
|
||||
Endpoint::ConnectClusterNodes => handle_connect_cluster_nodes(&self.garage, req).await,
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@ use crate::admin::error::*;
|
|||
use crate::router_macros::*;
|
||||
|
||||
pub enum Authorization {
|
||||
None,
|
||||
MetricsToken,
|
||||
AdminToken,
|
||||
}
|
||||
|
|
@ -16,6 +17,7 @@ router_match! {@func
|
|||
#[derive(Debug, Clone, PartialEq, Eq)]
|
||||
pub enum Endpoint {
|
||||
Options,
|
||||
Health,
|
||||
Metrics,
|
||||
GetClusterStatus,
|
||||
ConnectClusterNodes,
|
||||
|
|
@ -88,6 +90,7 @@ impl Endpoint {
|
|||
|
||||
let res = router_match!(@gen_path_parser (req.method(), path, query) [
|
||||
OPTIONS _ => Options,
|
||||
GET "/health" => Health,
|
||||
GET "/metrics" => Metrics,
|
||||
GET "/v0/status" => GetClusterStatus,
|
||||
POST "/v0/connect" => ConnectClusterNodes,
|
||||
|
|
@ -130,6 +133,7 @@ impl Endpoint {
|
|||
/// Get the kind of authorization which is required to perform the operation.
|
||||
pub fn authorization_type(&self) -> Authorization {
|
||||
match self {
|
||||
Self::Health => Authorization::None,
|
||||
Self::Metrics => Authorization::MetricsToken,
|
||||
_ => Authorization::AdminToken,
|
||||
}
|
||||
|
|
|
|||
|
|
@ -34,6 +34,9 @@ pub struct Garage {
|
|||
/// The parsed configuration Garage is running
|
||||
pub config: Config,
|
||||
|
||||
/// The replication mode of this cluster
|
||||
pub replication_mode: ReplicationMode,
|
||||
|
||||
/// The local database
|
||||
pub db: db::Db,
|
||||
/// A background job runner
|
||||
|
|
@ -258,6 +261,7 @@ impl Garage {
|
|||
// -- done --
|
||||
Ok(Arc::new(Self {
|
||||
config,
|
||||
replication_mode,
|
||||
db,
|
||||
background,
|
||||
system,
|
||||
|
|
|
|||
|
|
@ -1,3 +1,4 @@
|
|||
#[derive(Clone, Copy)]
|
||||
pub enum ReplicationMode {
|
||||
None,
|
||||
TwoWay,
|
||||
|
|
|
|||
Loading…
Reference in a new issue