From 86ad431e16dee9902ec806ec50539f1004c0c762 Mon Sep 17 00:00:00 2001
From: Thomas Orozco <torozco@fb.com>
Date: Thu, 12 Mar 2020 08:10:20 -0700
Subject: [PATCH] mononoke/fastreplay: add an replay_outcome_permille counter

Summary:
Similarly to D20418610, let's keep track of request failure rates in ODS
counters so they can be health-cheked by SF.

Reviewed By: farnz

Differential Revision: D20418705

fbshipit-source-id: 1d281e06c59414a0610836106370592596b47e39
---
 eden/mononoke/fastreplay/src/main.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/eden/mononoke/fastreplay/src/main.rs b/eden/mononoke/fastreplay/src/main.rs
index 7a2e962f23..e053d08ad4 100644
--- a/eden/mononoke/fastreplay/src/main.rs
+++ b/eden/mononoke/fastreplay/src/main.rs
@@ -61,6 +61,7 @@ define_stats! {
     admitted: timeseries(Rate, Sum),
     processed: timeseries(Rate, Sum),
     skipped: timeseries(Rate, Sum),
+    replay_outcome_permille: timeseries(Average),
 }
 
 const ARG_NO_SKIPLIST: &str = "no-skiplist";
@@ -172,10 +173,12 @@ async fn dispatch(
 
     match res {
         Ok(size) => {
+            STATS::replay_outcome_permille.add_value(1000);
             scuba.add("replay_response_size", size);
             scuba.log_with_msg("Replay Succeeded", None);
         }
         Err(e) => {
+            STATS::replay_outcome_permille.add_value(0);
             scuba
                 .unsampled()
                 .log_with_msg("Replay Failed", format!("{:#?}", e));