From 3fd2fb14e7283c6858731e162522e70051a8e162 Mon Sep 17 00:00:00 2001
From: Ivan Schasny <31857042+ischasny@users.noreply.github.com>
Date: Mon, 7 Oct 2024 19:51:03 +0100
Subject: [PATCH] feat: add metric to track current cbt ratio (#3020)

Add a new metric to track custom base token to ETH ratio
---
 .../node/base_token_adjuster/src/base_token_ratio_persister.rs | 3 +++
 core/node/base_token_adjuster/src/metrics.rs                   | 1 +
 2 files changed, 4 insertions(+)

diff --git a/core/node/base_token_adjuster/src/base_token_ratio_persister.rs b/core/node/base_token_adjuster/src/base_token_ratio_persister.rs
index 220f100e5dcb..785c9c4dfd7b 100644
--- a/core/node/base_token_adjuster/src/base_token_ratio_persister.rs
+++ b/core/node/base_token_adjuster/src/base_token_ratio_persister.rs
@@ -90,6 +90,9 @@ impl BaseTokenRatioPersister {
                         result: OperationResult::Success,
                     }]
                         .observe(start_time.elapsed());
+                    METRICS
+                        .ratio
+                        .set((ratio.numerator.get() as f64) / (ratio.denominator.get() as f64));
                     return Ok(ratio);
                 }
                 Err(err) => {
diff --git a/core/node/base_token_adjuster/src/metrics.rs b/core/node/base_token_adjuster/src/metrics.rs
index d84e4da0c0c7..17a48c1b5c32 100644
--- a/core/node/base_token_adjuster/src/metrics.rs
+++ b/core/node/base_token_adjuster/src/metrics.rs
@@ -18,6 +18,7 @@ pub(crate) struct OperationResultLabels {
 #[metrics(prefix = "base_token_adjuster")]
 pub(crate) struct BaseTokenAdjusterMetrics {
     pub l1_gas_used: Gauge<u64>,
+    pub ratio: Gauge<f64>,
     #[metrics(buckets = Buckets::LATENCIES)]
     pub external_price_api_latency: Family<OperationResultLabels, Histogram<Duration>>,
     #[metrics(buckets = Buckets::LATENCIES)]