From e62e7129146de5faa1920a43364a720cb2a6ddd6 Mon Sep 17 00:00:00 2001
From: Andrew Gershman <andrew@cndr.io>
Date: Fri, 15 Dec 2023 10:41:33 -0500
Subject: [PATCH] Allow set of prometheus collector addr as env var

---
 CONTRIBUTORS.txt                             | 3 ++-
 src/celery_prometheus/prometheus_bootstep.py | 7 ++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index f02ecf1..bc0aba7 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -1,2 +1,3 @@
 Guillaume Gauvrit <guillaume@gandi.net>
-Michael Vieira <michael.vieira@gandi.net>
\ No newline at end of file
+Michael Vieira <michael.vieira@gandi.net>
+Andrew Gershman <andrew.j.gershman@gmail.com>
\ No newline at end of file
diff --git a/src/celery_prometheus/prometheus_bootstep.py b/src/celery_prometheus/prometheus_bootstep.py
index 699e521..d348641 100644
--- a/src/celery_prometheus/prometheus_bootstep.py
+++ b/src/celery_prometheus/prometheus_bootstep.py
@@ -1,5 +1,6 @@
 """Helper for celery."""
 import logging
+import os
 from argparse import ArgumentParser
 from typing import Any, Mapping, Optional, cast
 
@@ -26,7 +27,11 @@ def add_prometheus_option(app: Celery) -> None:
     if celery_version.major < 5:
 
         def add_preload_arguments(parser: ArgumentParser) -> None:
-            parser.add_argument("--prometheus-collector-addr", default=None, help=help)
+            parser.add_argument(
+                "--prometheus-collector-addr",
+                default=os.environ.get("CELERY_PROMETHEUS_COLLECTOR_ADDR"),
+                help=help,
+            )
 
         app.user_options["preload"].add(add_preload_arguments)
     else: