Skip to content

Fix server boot failure with telemetry enabled (lazy-load app constants in AuthenticatorGauge) #3027

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
Coalkid wants to merge 1 commit into
base: master
Choose a base branch
from
+20 −5
Open

Fix server boot failure with telemetry enabled (lazy-load app constants in AuthenticatorGauge) #3027

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
11 changes: 11 additions & 0 deletions CHANGELOG.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
- Nothing should go in this section, please add to the latest unreleased version
(and update the corresponding date), or add a new version.

## [1.24.1] - 2026-06-11

### Fixed
- Fixed the server failing to boot when telemetry is enabled
(`CONJUR_TELEMETRY_ENABLED=true`): `Monitoring::Metrics::AuthenticatorGauge`
no longer resolves autoloaded application constants
(`DB::Repository::AuthenticatorConfigRepository`,
`Authentication::ImplementedAuthenticators`) during Rails initialization;
they are now resolved lazily on the first metrics update.
[cyberark/conjur#3026](https://github.com/cyberark/conjur/issues/3026)

## [1.24.0] - 2025-11-10

### Changed
Expand Down
14 changes: 9 additions & 5 deletions lib/monitoring/metrics/authenticator_gauge.rb
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,10 +3,7 @@ module Metrics
class AuthenticatorGauge
attr_reader :registry, :pubsub, :metric_name, :docstring, :labels, :sub_event_name

def initialize(
installed_authenticators: DB::Repository::AuthenticatorConfigRepository.new,
implemented_authenticators: Authentication::ImplementedAuthenticators
)
def initialize(installed_authenticators: nil, implemented_authenticators: nil)
@metric_name = :conjur_server_authenticator
@docstring = 'Number of authenticators enabled'
@labels = %i[type status]
Expand All @@ -19,7 +16,7 @@ def initialize(
def setup(registry, pubsub)
@registry = registry
@pubsub = pubsub

# Create/register the metric
Metrics.create_metric(self, :gauge)

Expand All @@ -28,6 +25,13 @@ def setup(registry, pubsub)
end

def update(*_payload)
# Resolve application constants lazily: this class is instantiated from
# config/initializers/prometheus.rb, before app constants under
# app/db and app/domain are autoloadable. By the time update runs
# (first request, via the initializer's lazy_init), autoloading is ready.
@installed_authenticators ||= DB::Repository::AuthenticatorConfigRepository.new
@implemented_authenticators ||= Authentication::ImplementedAuthenticators

metric = registry.get(metric_name)
update_enabled_authenticators(metric)
update_installed_authenticators(metric)
Expand Down