Implement basic metrics in table

1 files changed, 25 insertions, 0 deletions

diff --git a/src/table/metrics.rs b/src/table/metrics.rs
new file mode 100644
index 00000000..38e93904
--- /dev/null
+++ b/src/table/metrics.rs
@@ -0,0 +1,25 @@
+use opentelemetry::{global, metrics::*, KeyValue};
+
+/// TableMetrics reference all counter used for metrics
+pub struct TableMetrics {
+	merkle_updater_todo_queue_length: ValueObserver<u64>,
+}
+impl TableMetrics {
+	pub fn new(table_name: &'static str, merkle_todo: sled::Tree) -> Self {
+		let meter = global::meter(table_name);
+		TableMetrics {
+			merkle_updater_todo_queue_length: meter
+				.u64_value_observer(
+					format!("merkle_updater_todo_queue_length"),
+					move |observer| {
+						observer.observe(
+							merkle_todo.len() as u64,
+							&[KeyValue::new("table_name", table_name)],
+						)
+					},
+				)
+				.with_description("Bucket merkle updater TODO queue length")
+				.init(),
+		}
+	}
+}