From 5c013c7a6beeb95ad06817aa572fb36cdbdb53a0 Mon Sep 17 00:00:00 2001
From: Etienne Perot <eperot@google.com>
Date: Mon, 27 Mar 2023 16:06:46 -0700
Subject: [PATCH] `runsc`: Add `experiment` metadata metric label.

This is currently unused, but may be used to contain the name of an experiment
that is enabled on `runsc` in the future.

Defining the label now means less chance of breakage and less hassle relative
to introducing it later.

PiperOrigin-RevId: 519855249
---
 runsc/config/config.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/runsc/config/config.go b/runsc/config/config.go
index 57e7c9550..1227b920c 100644
--- a/runsc/config/config.go
+++ b/runsc/config/config.go
@@ -405,6 +405,9 @@ func (c *Config) MetricMetadata() map[string]string {
 		"fsmode":   fsMode,
 		"cpuarch":  runtime.GOARCH,
 		"go":       runtime.Version(),
+		// The "experiment" label is currently unused, but may be used to contain
+		// extra information about e.g. an experiment that may be enabled.
+		"experiment": "",
 	}
 }