18794: Add version and config metrics to workbench1.

[arvados.git] / apps / workbench / app / controllers / management_controller.rb

diff --git a/apps/workbench/app/controllers/management_controller.rb b/apps/workbench/app/controllers/management_controller.rb
new file mode 100644 (file)
index 0000000..4c8b52f
--- /dev/null
+++ b/apps/workbench/app/controllers/management_controller.rb
@@ -0,0 +1,51 @@
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
+require 'app_version'
+
+class ManagementController < ApplicationController
+  skip_around_action :thread_clear
+  skip_around_action :set_thread_api_token
+  skip_around_action :require_thread_api_token
+  skip_before_action :ensure_arvados_api_exists
+  skip_before_action :accept_uuid_as_id_param
+  skip_before_action :check_user_agreements
+  skip_before_action :check_user_profile
+  skip_before_action :load_filters_and_paging_params
+  skip_before_action :find_object_by_uuid
+
+  before_action :check_auth_header
+
+  def check_auth_header
+    mgmt_token = Rails.configuration.ManagementToken
+    auth_header = request.headers['Authorization']
+
+    if mgmt_token.empty?
+      render :json => {:errors => "disabled"}, :status => 404
+    elsif !auth_header
+      render :json => {:errors => "authorization required"}, :status => 401
+    elsif auth_header != 'Bearer '+mgmt_token
+      render :json => {:errors => "authorization error"}, :status => 403
+    end
+  end
+
+  def metrics
+    render content_type: 'text/plain', plain: <<~EOF
+# HELP arvados_config_load_timestamp_seconds Time when config file was loaded.
+# TYPE arvados_config_load_timestamp_seconds gauge
+arvados_config_load_timestamp_seconds{sha256="#{Rails.configuration.SourceSHA256}"} #{Rails.configuration.LoadTimestamp.to_f}
+# HELP arvados_config_source_timestamp_seconds Timestamp of config file when it was loaded.
+# TYPE arvados_config_source_timestamp_seconds gauge
+arvados_config_source_timestamp_seconds{sha256="#{Rails.configuration.SourceSHA256}"} #{Rails.configuration.SourceTimestamp.to_f}
+# HELP arvados_version_running Indicated version is running.
+# TYPE arvados_version_running gauge
+arvados_version_running{version="#{AppVersion.package_version}"} 1
+EOF
+  end
+
+  def health
+    resp = {"health" => "OK"}
+    render json: resp
+  end
+end