use std::net::SocketAddr;
use std::sync::Arc;
use hyper::{Body, Request, Response, StatusCode};
use serde::{Deserialize, Serialize};
use garage_util::crdt::*;
use garage_util::data::*;
use garage_rpc::layout;
use garage_model::garage::Garage;
use crate::admin::error::*;
use crate::helpers::{json_ok_response, parse_json_body};
pub async fn handle_get_cluster_status(garage: &Arc<Garage>) -> Result<Response<Body>, Error> {
let res = GetClusterStatusResponse {
node: hex::encode(garage.system.id),
garage_version: garage_util::version::garage_version(),
garage_features: garage_util::version::garage_features(),
rust_version: garage_util::version::rust_version(),
db_engine: garage.db.engine(),
known_nodes: garage
.system
.get_known_nodes()
.into_iter()
.map(|i| KnownNodeResp {
id: hex::encode(i.id),
addr: i.addr,
is_up: i.is_up,
last_seen_secs_ago: i.last_seen_secs_ago,
hostname: i.status.hostname,
})
.collect(),
layout: get_cluster_layout(garage),
};
Ok(json_ok_response(&res)?)
}
pub async fn handle_get_cluster_health(garage: &Arc<Garage>) -> Result<Response<Body>, Error> {
let health = garage.system.health();
Ok(json_ok_response(&health)?)
}
pub async fn handle_connect_cluster_nodes(
garage: &Arc<Garage>,
req: Request<Body>,
) -> Result<Response<Body>, Error> {
let req = parse_json_body::<Vec<String>>(req).await?;
let res = futures::future::join_all(req.iter().map(|node| garage.system.connect(node)))
.await
.into_iter()
.map(|r| match r {
Ok(()) => ConnectClusterNodesResponse {
success: true,
error: None,
},
Err(e) => ConnectClusterNodesResponse {
success: false,
error: Some(format!("{}", e)),
},
})
.collect::<Vec<_>>();
Ok(json_ok_response(&res)?)
}
pub async fn handle_get_cluster_layout(garage: &Arc<Garage>) -> Result<Response<Body>, Error> {
let res = get_cluster_layout(garage);
Ok(json_ok_response(&res)?)
}
fn get_cluster_layout(garage: &Arc<Garage>) -> GetClusterLayoutResponse {
let layout = garage.system.get_cluster_layout();
let roles = layout
.roles
.items()
.iter()
.filter_map(|(k, _, v)| v.0.clone().map(|x| (k, x)))
.map(|(k, v)| NodeRoleResp {
id: hex::encode(k),
zone: v.zone.clone(),
capacity: v.capacity,
tags: v.tags.clone(),
})
.collect::<Vec<_>>();
let staged_role_changes = layout
.staging_roles
.items()
.iter()
.filter(|(k, _, v)| layout.roles.get(k) != Some(v))
.map(|(k, _, v)| match &v.0 {
None => NodeRoleChange {
id: hex::encode(k),
remove: true,
..Default::default()
},
Some(r) => NodeRoleChange {
id: hex::encode(k),
remove: false,
zone: Some(r.zone.clone()),
capacity: r.capacity,
tags: Some(r.tags.clone()),
},
})
.collect::<Vec<_>>();
GetClusterLayoutResponse {
version: layout.version,
roles,
staged_role_changes,
}
}
// ----
#[derive(Serialize)]
#[serde(rename_all = "camelCase")]
struct GetClusterStatusResponse {
node: String,
garage_version: &'static str,
garage_features: Option<&'static [&'static str]>,
rust_version: &'static str,
db_engine: String,
known_nodes: Vec<KnownNodeResp>,
layout: GetClusterLayoutResponse,
}
#[derive(Serialize)]
#[serde(rename_all = "camelCase")]
struct ConnectClusterNodesResponse {
success: bool,
error: Option<String>,
}
#[derive(Serialize)]
#[serde(rename_all = "camelCase")]
struct GetClusterLayoutResponse {
version: u64,
roles: Vec<NodeRoleResp>,
staged_role_changes: Vec<NodeRoleChange>,
}
#[derive(Serialize)]
#[serde(rename_all = "camelCase")]
struct NodeRoleResp {
id: String,
zone: String,
capacity: Option<u64>,
tags: Vec<String>,
}
#[derive(Serialize)]
#[serde(rename_all = "camelCase")]
struct KnownNodeResp {
id: String,
addr: SocketAddr,
is_up: bool,
last_seen_secs_ago: Option<u64>,
hostname: String,
}
// ---- update functions ----
pub async fn handle_update_cluster_layout(
garage: &Arc<Garage>,
req: Request<Body>,
) -> Result<Response<Body>, Error> {
let updates = parse_json_body::<UpdateClusterLayoutRequest>(req).await?;
let mut layout = garage.system.get_cluster_layout();
let mut roles = layout.roles.clone();
roles.merge(&layout.staging_roles);
for change in updates {
let node = hex::decode(&change.id).ok_or_bad_request("Invalid node identifier")?;
let node = Uuid::try_from(&node).ok_or_bad_request("Invalid node identifier")?;
let new_role = match (change.remove, change.zone, change.capacity, change.tags) {
(true, None, None, None) => None,
(false, Some(zone), capacity, Some(tags)) => Some(layout::NodeRole {
zone,
capacity,
tags,
}),
_ => return Err(Error::bad_request("Invalid layout change")),
};
layout
.staging_roles
.merge(&roles.update_mutator(node, layout::NodeRoleV(new_role)));
}
garage.system.update_cluster_layout(&layout).await?;
Ok(Response::builder()
.status(StatusCode::NO_CONTENT)
.body(Body::empty())?)
}
pub async fn handle_apply_cluster_layout(
garage: &Arc<Garage>,
req: Request<Body>,
) -> Result<Response<Body>, Error> {
let param = parse_json_body::<ApplyRevertLayoutRequest>(req).await?;
let layout = garage.system.get_cluster_layout();
let (layout, msg) = layout.apply_staged_changes(Some(param.version))?;
garage.system.update_cluster_layout(&layout).await?;
Ok(Response::builder()
.status(StatusCode::OK)
.header(http::header::CONTENT_TYPE, "text/plain")
.body(Body::from(msg.join("\n")))?)
}
pub async fn handle_revert_cluster_layout(
garage: &Arc<Garage>,
req: Request<Body>,
) -> Result<Response<Body>, Error> {
let param = parse_json_body::<ApplyRevertLayoutRequest>(req).await?;
let layout = garage.system.get_cluster_layout();
let layout = layout.revert_staged_changes(Some(param.version))?;
garage.system.update_cluster_layout(&layout).await?;
Ok(Response::builder()
.status(StatusCode::NO_CONTENT)
.body(Body::empty())?)
}
// ----
type UpdateClusterLayoutRequest = Vec<NodeRoleChange>;
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
struct ApplyRevertLayoutRequest {
version: u64,
}
// ----
#[derive(Serialize, Deserialize, Default)]
#[serde(rename_all = "camelCase")]
struct NodeRoleChange {
id: String,
#[serde(default)]
remove: bool,
#[serde(default)]
zone: Option<String>,
#[serde(default)]
capacity: Option<u64>,
#[serde(default)]
tags: Option<Vec<String>>,
}
