1 files changed, 37 insertions, 0 deletions
diff --git a/app/controllers/projects/environments/prometheus_api_controller.rb b/app/controllers/projects/environments/prometheus_api_controller.rb
new file mode 100644
index 00000000000..fd3320637b0
--- /dev/null
+++ b/app/controllers/projects/environments/prometheus_api_controller.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+class Projects::Environments::PrometheusApiController < Projects::ApplicationController
+  before_action :authorize_read_prometheus!
+  before_action :environment
+
+  def proxy
+    result = Prometheus::ProxyService.new(
+      environment,
+      request.method,
+      params[:proxy_path],
+      params.permit!
+    ).execute
+
+    if result.nil?
+      return render status: :accepted, json: {
+        status: _('processing'),
+        message: _('Not ready yet. Try again later.')
+      }
+    end
+
+    if result[:status] == :success
+      render status: result[:http_status], json: result[:body]
+    else
+      render(
+        status: result[:http_status] || :bad_request,
+        json: { status: result[:status], message: result[:message] }
+      )
+    end
+  end
+
+  private
+
+  def environment
+    @environment ||= project.environments.find(params[:id])
+  end
+end