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use opentelemetry::{global, metrics::*, KeyValue};
use garage_db as db;
/// TableMetrics reference all counter used for metrics
pub struct TableMetrics {
pub(crate) _merkle_todo_len: ValueObserver<u64>,
pub(crate) _gc_todo_len: ValueObserver<u64>,
pub(crate) get_request_counter: BoundCounter<u64>,
pub(crate) get_request_duration: BoundValueRecorder<f64>,
pub(crate) put_request_counter: BoundCounter<u64>,
pub(crate) put_request_duration: BoundValueRecorder<f64>,
pub(crate) internal_update_counter: BoundCounter<u64>,
pub(crate) internal_delete_counter: BoundCounter<u64>,
pub(crate) sync_items_sent: Counter<u64>,
pub(crate) sync_items_received: Counter<u64>,
}
impl TableMetrics {
pub fn new(table_name: &'static str, merkle_todo: db::Tree, gc_todo: db::Tree) -> Self {
let meter = global::meter(table_name);
TableMetrics {
_merkle_todo_len: meter
.u64_value_observer(
"table.merkle_updater_todo_queue_length",
move |observer| {
if let Ok(v) = merkle_todo.len() {
observer.observe(
v as u64,
&[KeyValue::new("table_name", table_name)],
);
}
},
)
.with_description("Merkle tree updater TODO queue length")
.init(),
_gc_todo_len: meter
.u64_value_observer(
"table.gc_todo_queue_length",
move |observer| {
if let Ok(v) = gc_todo.len() {
observer.observe(
v as u64,
&[KeyValue::new("table_name", table_name)],
);
}
},
)
.with_description("Table garbage collector TODO queue length")
.init(),
get_request_counter: meter
.u64_counter("table.get_request_counter")
.with_description("Number of get/get_range requests internally made on this table")
.init()
.bind(&[KeyValue::new("table_name", table_name)]),
get_request_duration: meter
.f64_value_recorder("table.get_request_duration")
.with_description("Duration of get/get_range requests internally made on this table, in seconds")
.init()
.bind(&[KeyValue::new("table_name", table_name)]),
put_request_counter: meter
.u64_counter("table.put_request_counter")
.with_description("Number of insert/insert_many requests internally made on this table")
.init()
.bind(&[KeyValue::new("table_name", table_name)]),
put_request_duration: meter
.f64_value_recorder("table.put_request_duration")
.with_description("Duration of insert/insert_many requests internally made on this table, in seconds")
.init()
.bind(&[KeyValue::new("table_name", table_name)]),
internal_update_counter: meter
.u64_counter("table.internal_update_counter")
.with_description("Number of value updates where the value actually changes (includes creation of new key and update of existing key)")
.init()
.bind(&[KeyValue::new("table_name", table_name)]),
internal_delete_counter: meter
.u64_counter("table.internal_delete_counter")
.with_description("Number of value deletions in the tree (due to GC or repartitioning)")
.init()
.bind(&[KeyValue::new("table_name", table_name)]),
sync_items_sent: meter
.u64_counter("table.sync_items_sent")
.with_description("Number of data items sent to other nodes during resync procedures")
.init(),
sync_items_received: meter
.u64_counter("table.sync_items_received")
.with_description("Number of data items received from other nodes during resync procedures")
.init(),
}
}
}
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