mirror of
https://git.deuxfleurs.fr/Deuxfleurs/garage.git
synced 2024-12-18 05:06:39 +00:00
[peer-metrics] refactor SystemMetrics to hold a reference to System
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parent
3cdf69f079
commit
182a23cc12
3 changed files with 83 additions and 72 deletions
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@ -162,6 +162,7 @@ pub async fn run_server(config_file: PathBuf, secrets: Secrets) -> Result<(), Er
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info!("Netapp exited");
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// Drop all references so that stuff can terminate properly
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garage.system.cleanup();
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drop(garage);
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// Await for all background tasks to end
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@ -6,6 +6,7 @@ use std::path::{Path, PathBuf};
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use std::sync::{Arc, RwLock};
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use std::time::{Duration, Instant};
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use arc_swap::ArcSwapOption;
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use async_trait::async_trait;
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use futures::join;
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use serde::{Deserialize, Serialize};
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@ -86,7 +87,7 @@ pub struct System {
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persist_cluster_layout: Persister<ClusterLayout>,
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persist_peer_list: Persister<PeerList>,
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local_status: Arc<RwLock<NodeStatus>>,
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pub(crate) local_status: RwLock<NodeStatus>,
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node_status: RwLock<HashMap<Uuid, (u64, NodeStatus)>>,
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pub netapp: Arc<NetApp>,
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@ -104,10 +105,10 @@ pub struct System {
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#[cfg(feature = "kubernetes-discovery")]
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kubernetes_discovery: Option<KubernetesDiscoveryConfig>,
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metrics: SystemMetrics,
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metrics: ArcSwapOption<SystemMetrics>,
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replication_mode: ReplicationMode,
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replication_factor: usize,
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pub(crate) replication_factor: usize,
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/// The ring
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pub ring: watch::Receiver<Arc<Ring>>,
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@ -280,9 +281,6 @@ impl System {
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let mut local_status = NodeStatus::initial(replication_factor, &cluster_layout);
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local_status.update_disk_usage(&config.metadata_dir, &config.data_dir);
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let local_status = Arc::new(RwLock::new(local_status));
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let metrics = SystemMetrics::new(replication_factor, local_status.clone());
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let ring = Ring::new(cluster_layout, replication_factor);
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let (update_ring, ring) = watch::channel(Arc::new(ring));
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@ -356,7 +354,7 @@ impl System {
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id: netapp.id.into(),
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persist_cluster_layout,
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persist_peer_list,
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local_status,
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local_status: RwLock::new(local_status),
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node_status: RwLock::new(HashMap::new()),
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netapp: netapp.clone(),
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peering: peering.clone(),
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@ -376,14 +374,19 @@ impl System {
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consul_discovery,
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#[cfg(feature = "kubernetes-discovery")]
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kubernetes_discovery: config.kubernetes_discovery.clone(),
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metrics,
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metrics: ArcSwapOption::new(None),
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ring,
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update_ring: Mutex::new(update_ring),
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metadata_dir: config.metadata_dir.clone(),
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data_dir: config.data_dir.clone(),
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});
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sys.system_endpoint.set_handler(sys.clone());
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let metrics = SystemMetrics::new(sys.clone());
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sys.metrics.store(Some(Arc::new(metrics)));
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Ok(sys)
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}
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@ -401,6 +404,11 @@ impl System {
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);
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}
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pub fn cleanup(&self) {
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// Break reference cycle
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self.metrics.store(None);
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}
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// ---- Administrative operations (directly available and
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// also available through RPC) ----
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@ -699,11 +707,7 @@ impl System {
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let restart_at = Instant::now() + STATUS_EXCHANGE_INTERVAL;
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// Update local node status that is exchanged.
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// Status variables are exported into Prometheus in SystemMetrics,
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// so we take the opportunity to also update here the health status
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// that is reported in those metrics.
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self.update_local_status();
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*self.metrics.health.write().unwrap() = Some(self.health());
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let local_status: NodeStatus = self.local_status.read().unwrap().clone();
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let _ = self
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@ -1,13 +1,12 @@
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use std::sync::{Arc, RwLock};
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use std::time::{Duration, Instant};
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use opentelemetry::{global, metrics::*, KeyValue};
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use crate::system::{ClusterHealth, ClusterHealthStatus, NodeStatus};
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use crate::system::{ClusterHealthStatus, System};
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/// TableMetrics reference all counter used for metrics
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pub struct SystemMetrics {
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pub(crate) health: Arc<RwLock<Option<ClusterHealth>>>,
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// Static values
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pub(crate) _garage_build_info: ValueObserver<u64>,
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pub(crate) _replication_factor: ValueObserver<u64>,
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@ -29,12 +28,25 @@ pub struct SystemMetrics {
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}
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impl SystemMetrics {
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pub fn new(replication_factor: usize, local_status: Arc<RwLock<NodeStatus>>) -> Self {
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pub fn new(system: Arc<System>) -> Self {
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let meter = global::meter("garage_system");
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let health = Arc::new(RwLock::new(None));
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Self {
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health: health.clone(),
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let health_cache = RwLock::new((Instant::now(), system.health()));
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let system2 = system.clone();
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let get_health = Arc::new(move || {
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{
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let cache = health_cache.read().unwrap();
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if cache.0 > Instant::now() - Duration::from_secs(1) {
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return cache.1;
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}
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}
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let health = system2.health();
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*health_cache.write().unwrap() = (Instant::now(), health);
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health
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});
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Self {
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// Static values
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_garage_build_info: meter
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.u64_value_observer("garage_build_info", move |observer| {
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@ -48,19 +60,22 @@ impl SystemMetrics {
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})
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.with_description("Garage build info")
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.init(),
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_replication_factor: meter
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_replication_factor: {
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let replication_factor = system.replication_factor;
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meter
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.u64_value_observer("garage_replication_factor", move |observer| {
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observer.observe(replication_factor as u64, &[])
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})
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.with_description("Garage replication factor setting")
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.init(),
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.init()
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},
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// Disk space values from System::local_status
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_disk_avail: {
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let status = local_status.clone();
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let system = system.clone();
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meter
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.u64_value_observer("garage_local_disk_avail", move |observer| {
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let st = status.read().unwrap();
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let st = system.local_status.read().unwrap();
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if let Some((avail, _total)) = st.data_disk_avail {
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observer.observe(avail, &[KeyValue::new("volume", "data")]);
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}
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@ -72,10 +87,10 @@ impl SystemMetrics {
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.init()
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},
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_disk_total: {
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let status = local_status.clone();
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let system = system.clone();
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meter
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.u64_value_observer("garage_local_disk_total", move |observer| {
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let st = status.read().unwrap();
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let st = system.local_status.read().unwrap();
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if let Some((_avail, total)) = st.data_disk_avail {
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observer.observe(total, &[KeyValue::new("volume", "data")]);
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}
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@ -87,98 +102,90 @@ impl SystemMetrics {
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.init()
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},
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// Health report from System::health()
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// Health report from System::()
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_cluster_healthy: {
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let health = health.clone();
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let get_health = get_health.clone();
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meter
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.u64_value_observer("cluster_healthy", move |observer| {
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if let Some(h) = health.read().unwrap().as_ref() {
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let h = get_health();
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if h.status == ClusterHealthStatus::Healthy {
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observer.observe(1, &[]);
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} else {
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observer.observe(0, &[]);
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}
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}
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})
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.with_description("Whether all storage nodes are connected")
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.init()
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},
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_cluster_available: {
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let health = health.clone();
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let get_health = get_health.clone();
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meter.u64_value_observer("cluster_available", move |observer| {
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if let Some(h) = health.read().unwrap().as_ref() {
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let h = get_health();
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if h.status != ClusterHealthStatus::Unavailable {
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observer.observe(1, &[]);
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} else {
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observer.observe(0, &[]);
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}
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}
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})
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.with_description("Whether all requests can be served, even if some storage nodes are disconnected")
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.init()
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},
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_known_nodes: {
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let health = health.clone();
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let get_health = get_health.clone();
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meter
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.u64_value_observer("cluster_known_nodes", move |observer| {
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if let Some(h) = health.read().unwrap().as_ref() {
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let h = get_health();
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observer.observe(h.known_nodes as u64, &[]);
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}
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})
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.with_description("Number of nodes already seen once in the cluster")
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.init()
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},
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_connected_nodes: {
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let health = health.clone();
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let get_health = get_health.clone();
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meter
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.u64_value_observer("cluster_connected_nodes", move |observer| {
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if let Some(h) = health.read().unwrap().as_ref() {
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let h = get_health();
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observer.observe(h.connected_nodes as u64, &[]);
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}
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})
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.with_description("Number of nodes currently connected")
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.init()
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},
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_storage_nodes: {
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let health = health.clone();
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let get_health = get_health.clone();
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meter
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.u64_value_observer("cluster_storage_nodes", move |observer| {
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if let Some(h) = health.read().unwrap().as_ref() {
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let h = get_health();
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observer.observe(h.storage_nodes as u64, &[]);
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}
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})
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.with_description("Number of storage nodes declared in the current layout")
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.init()
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},
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_storage_nodes_ok: {
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let health = health.clone();
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let get_health = get_health.clone();
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meter
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.u64_value_observer("cluster_storage_nodes_ok", move |observer| {
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if let Some(h) = health.read().unwrap().as_ref() {
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let h = get_health();
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observer.observe(h.storage_nodes_ok as u64, &[]);
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}
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})
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.with_description("Number of storage nodes currently connected")
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.init()
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},
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_partitions: {
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let health = health.clone();
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let get_health = get_health.clone();
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meter
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.u64_value_observer("cluster_partitions", move |observer| {
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if let Some(h) = health.read().unwrap().as_ref() {
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let h = get_health();
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observer.observe(h.partitions as u64, &[]);
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}
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})
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.with_description("Number of partitions in the layout")
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.init()
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},
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_partitions_quorum: {
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let health = health.clone();
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let get_health = get_health.clone();
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meter
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.u64_value_observer("cluster_partitions_quorum", move |observer| {
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if let Some(h) = health.read().unwrap().as_ref() {
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let h = get_health();
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observer.observe(h.partitions_quorum as u64, &[]);
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}
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})
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.with_description(
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"Number of partitions for which we have a quorum of connected nodes",
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@ -186,12 +193,11 @@ impl SystemMetrics {
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.init()
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},
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_partitions_all_ok: {
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let health = health.clone();
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let get_health = get_health.clone();
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meter
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.u64_value_observer("cluster_partitions_all_ok", move |observer| {
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if let Some(h) = health.read().unwrap().as_ref() {
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let h = get_health();
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observer.observe(h.partitions_all_ok as u64, &[]);
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}
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})
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.with_description(
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"Number of partitions for which all storage nodes are connected",
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