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-rw-r--r--src/rpc/system_metrics.rs318
1 files changed, 272 insertions, 46 deletions
diff --git a/src/rpc/system_metrics.rs b/src/rpc/system_metrics.rs
index af81b71f..ffbef6df 100644
--- a/src/rpc/system_metrics.rs
+++ b/src/rpc/system_metrics.rs
@@ -1,32 +1,58 @@
-use std::sync::atomic::{AtomicU64, Ordering};
-use std::sync::Arc;
+use std::sync::{Arc, RwLock};
+use std::time::{Duration, Instant};
use opentelemetry::{global, metrics::*, KeyValue};
+use crate::ring::Ring;
+use crate::system::{ClusterHealthStatus, System};
+
/// TableMetrics reference all counter used for metrics
pub struct SystemMetrics {
+ // Static values
pub(crate) _garage_build_info: ValueObserver<u64>,
pub(crate) _replication_factor: ValueObserver<u64>,
+
+ // Disk space values from System::local_status
pub(crate) _disk_avail: ValueObserver<u64>,
pub(crate) _disk_total: ValueObserver<u64>,
- pub(crate) values: Arc<SystemMetricsValues>,
-}
-#[derive(Default)]
-pub struct SystemMetricsValues {
- pub(crate) data_disk_total: AtomicU64,
- pub(crate) data_disk_avail: AtomicU64,
- pub(crate) meta_disk_total: AtomicU64,
- pub(crate) meta_disk_avail: AtomicU64,
+ // Health report from System::health()
+ pub(crate) _cluster_healthy: ValueObserver<u64>,
+ pub(crate) _cluster_available: ValueObserver<u64>,
+ pub(crate) _known_nodes: ValueObserver<u64>,
+ pub(crate) _connected_nodes: ValueObserver<u64>,
+ pub(crate) _storage_nodes: ValueObserver<u64>,
+ pub(crate) _storage_nodes_ok: ValueObserver<u64>,
+ pub(crate) _partitions: ValueObserver<u64>,
+ pub(crate) _partitions_quorum: ValueObserver<u64>,
+ pub(crate) _partitions_all_ok: ValueObserver<u64>,
+
+ // Status report for individual cluster nodes
+ pub(crate) _layout_node_connected: ValueObserver<u64>,
+ pub(crate) _layout_node_disconnected_time: ValueObserver<u64>,
}
impl SystemMetrics {
- pub fn new(replication_factor: usize) -> Self {
+ pub fn new(system: Arc<System>) -> Self {
let meter = global::meter("garage_system");
- let values = Arc::new(SystemMetricsValues::default());
- let values1 = values.clone();
- let values2 = values.clone();
+
+ let health_cache = RwLock::new((Instant::now(), system.health()));
+ let system2 = system.clone();
+ let get_health = Arc::new(move || {
+ {
+ let cache = health_cache.read().unwrap();
+ if cache.0 > Instant::now() - Duration::from_secs(1) {
+ return cache.1;
+ }
+ }
+
+ let health = system2.health();
+ *health_cache.write().unwrap() = (Instant::now(), health);
+ health
+ });
+
Self {
+ // Static values
_garage_build_info: meter
.u64_value_observer("garage_build_info", move |observer| {
observer.observe(
@@ -39,39 +65,239 @@ impl SystemMetrics {
})
.with_description("Garage build info")
.init(),
- _replication_factor: meter
- .u64_value_observer("garage_replication_factor", move |observer| {
- observer.observe(replication_factor as u64, &[])
- })
- .with_description("Garage replication factor setting")
- .init(),
- _disk_avail: meter
- .u64_value_observer("garage_local_disk_avail", move |observer| {
- match values1.data_disk_avail.load(Ordering::Relaxed) {
- 0 => (),
- x => observer.observe(x, &[KeyValue::new("volume", "data")]),
- };
- match values1.meta_disk_avail.load(Ordering::Relaxed) {
- 0 => (),
- x => observer.observe(x, &[KeyValue::new("volume", "metadata")]),
- };
- })
- .with_description("Garage available disk space on each node")
- .init(),
- _disk_total: meter
- .u64_value_observer("garage_local_disk_total", move |observer| {
- match values2.data_disk_total.load(Ordering::Relaxed) {
- 0 => (),
- x => observer.observe(x, &[KeyValue::new("volume", "data")]),
- };
- match values2.meta_disk_total.load(Ordering::Relaxed) {
- 0 => (),
- x => observer.observe(x, &[KeyValue::new("volume", "metadata")]),
- };
+ _replication_factor: {
+ let replication_factor = system.replication_factor;
+ meter
+ .u64_value_observer("garage_replication_factor", move |observer| {
+ observer.observe(replication_factor as u64, &[])
+ })
+ .with_description("Garage replication factor setting")
+ .init()
+ },
+
+ // Disk space values from System::local_status
+ _disk_avail: {
+ let system = system.clone();
+ meter
+ .u64_value_observer("garage_local_disk_avail", move |observer| {
+ let st = system.local_status.read().unwrap();
+ if let Some((avail, _total)) = st.data_disk_avail {
+ observer.observe(avail, &[KeyValue::new("volume", "data")]);
+ }
+ if let Some((avail, _total)) = st.meta_disk_avail {
+ observer.observe(avail, &[KeyValue::new("volume", "metadata")]);
+ }
+ })
+ .with_description("Garage available disk space on each node")
+ .init()
+ },
+ _disk_total: {
+ let system = system.clone();
+ meter
+ .u64_value_observer("garage_local_disk_total", move |observer| {
+ let st = system.local_status.read().unwrap();
+ if let Some((_avail, total)) = st.data_disk_avail {
+ observer.observe(total, &[KeyValue::new("volume", "data")]);
+ }
+ if let Some((_avail, total)) = st.meta_disk_avail {
+ observer.observe(total, &[KeyValue::new("volume", "metadata")]);
+ }
+ })
+ .with_description("Garage total disk space on each node")
+ .init()
+ },
+
+ // Health report from System::()
+ _cluster_healthy: {
+ let get_health = get_health.clone();
+ meter
+ .u64_value_observer("cluster_healthy", move |observer| {
+ let h = get_health();
+ if h.status == ClusterHealthStatus::Healthy {
+ observer.observe(1, &[]);
+ } else {
+ observer.observe(0, &[]);
+ }
+ })
+ .with_description("Whether all storage nodes are connected")
+ .init()
+ },
+ _cluster_available: {
+ let get_health = get_health.clone();
+ meter.u64_value_observer("cluster_available", move |observer| {
+ let h = get_health();
+ if h.status != ClusterHealthStatus::Unavailable {
+ observer.observe(1, &[]);
+ } else {
+ observer.observe(0, &[]);
+ }
})
- .with_description("Garage total disk space on each node")
- .init(),
- values,
+ .with_description("Whether all requests can be served, even if some storage nodes are disconnected")
+ .init()
+ },
+ _known_nodes: {
+ let get_health = get_health.clone();
+ meter
+ .u64_value_observer("cluster_known_nodes", move |observer| {
+ let h = get_health();
+ observer.observe(h.known_nodes as u64, &[]);
+ })
+ .with_description("Number of nodes already seen once in the cluster")
+ .init()
+ },
+ _connected_nodes: {
+ let get_health = get_health.clone();
+ meter
+ .u64_value_observer("cluster_connected_nodes", move |observer| {
+ let h = get_health();
+ observer.observe(h.connected_nodes as u64, &[]);
+ })
+ .with_description("Number of nodes currently connected")
+ .init()
+ },
+ _storage_nodes: {
+ let get_health = get_health.clone();
+ meter
+ .u64_value_observer("cluster_storage_nodes", move |observer| {
+ let h = get_health();
+ observer.observe(h.storage_nodes as u64, &[]);
+ })
+ .with_description("Number of storage nodes declared in the current layout")
+ .init()
+ },
+ _storage_nodes_ok: {
+ let get_health = get_health.clone();
+ meter
+ .u64_value_observer("cluster_storage_nodes_ok", move |observer| {
+ let h = get_health();
+ observer.observe(h.storage_nodes_ok as u64, &[]);
+ })
+ .with_description("Number of storage nodes currently connected")
+ .init()
+ },
+ _partitions: {
+ let get_health = get_health.clone();
+ meter
+ .u64_value_observer("cluster_partitions", move |observer| {
+ let h = get_health();
+ observer.observe(h.partitions as u64, &[]);
+ })
+ .with_description("Number of partitions in the layout")
+ .init()
+ },
+ _partitions_quorum: {
+ let get_health = get_health.clone();
+ meter
+ .u64_value_observer("cluster_partitions_quorum", move |observer| {
+ let h = get_health();
+ observer.observe(h.partitions_quorum as u64, &[]);
+ })
+ .with_description(
+ "Number of partitions for which we have a quorum of connected nodes",
+ )
+ .init()
+ },
+ _partitions_all_ok: {
+ let get_health = get_health.clone();
+ meter
+ .u64_value_observer("cluster_partitions_all_ok", move |observer| {
+ let h = get_health();
+ observer.observe(h.partitions_all_ok as u64, &[]);
+ })
+ .with_description(
+ "Number of partitions for which all storage nodes are connected",
+ )
+ .init()
+ },
+
+ // Status report for individual cluster nodes
+ _layout_node_connected: {
+ let system = system.clone();
+ meter
+ .u64_value_observer("cluster_layout_node_connected", move |observer| {
+ let ring: Arc<Ring> = system.ring.borrow().clone();
+ let nodes = system.get_known_nodes();
+ for (id, _, config) in ring.layout.roles.items().iter() {
+ if let Some(role) = &config.0 {
+ let mut kv = vec![
+ KeyValue::new("id", format!("{:?}", id)),
+ KeyValue::new("role_zone", role.zone.clone()),
+ ];
+ match role.capacity {
+ Some(cap) => {
+ kv.push(KeyValue::new("role_capacity", cap as i64));
+ kv.push(KeyValue::new("role_gateway", 0));
+ }
+ None => {
+ kv.push(KeyValue::new("role_gateway", 1));
+ }
+ }
+
+ let value;
+ if let Some(node) = nodes.iter().find(|n| n.id == *id) {
+ value = if node.is_up { 1 } else { 0 };
+ // TODO: if we add address and hostname, and those change, we
+ // get duplicate metrics, due to bad otel aggregation :(
+ // Can probably be fixed when we upgrade opentelemetry
+ // kv.push(KeyValue::new("address", node.addr.to_string()));
+ // kv.push(KeyValue::new(
+ // "hostname",
+ // node.status.hostname.clone(),
+ // ));
+ } else {
+ value = 0;
+ }
+
+ observer.observe(value, &kv);
+ }
+ }
+ })
+ .with_description("Connection status for nodes in the cluster layout")
+ .init()
+ },
+ _layout_node_disconnected_time: {
+ let system = system.clone();
+ meter
+ .u64_value_observer("cluster_layout_node_disconnected_time", move |observer| {
+ let ring: Arc<Ring> = system.ring.borrow().clone();
+ let nodes = system.get_known_nodes();
+ for (id, _, config) in ring.layout.roles.items().iter() {
+ if let Some(role) = &config.0 {
+ let mut kv = vec![
+ KeyValue::new("id", format!("{:?}", id)),
+ KeyValue::new("role_zone", role.zone.clone()),
+ ];
+ match role.capacity {
+ Some(cap) => {
+ kv.push(KeyValue::new("role_capacity", cap as i64));
+ kv.push(KeyValue::new("role_gateway", 0));
+ }
+ None => {
+ kv.push(KeyValue::new("role_gateway", 1));
+ }
+ }
+
+ if let Some(node) = nodes.iter().find(|n| n.id == *id) {
+ // TODO: see comment above
+ // kv.push(KeyValue::new("address", node.addr.to_string()));
+ // kv.push(KeyValue::new(
+ // "hostname",
+ // node.status.hostname.clone(),
+ // ));
+ if node.is_up {
+ observer.observe(0, &kv);
+ } else if let Some(secs) = node.last_seen_secs_ago {
+ observer.observe(secs, &kv);
+ }
+ }
+ }
+ }
+ })
+ .with_description(
+ "Time (in seconds) since last connection to nodes in the cluster layout",
+ )
+ .init()
+ },
}
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 21:15:34 +0000