Merge branch '52767-more-chaos-for-gitlab' into 'master'

Add more chaos to GitLab

Closes #53362 and #52767

See merge request gitlab-org/gitlab-ce!22746

1 files changed, 56 insertions, 0 deletions

diff --git a/app/controllers/chaos_controller.rb b/app/controllers/chaos_controller.rb
new file mode 100644
index 00000000000..b4f46cddbe9
--- /dev/null
+++ b/app/controllers/chaos_controller.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+class ChaosController < ActionController::Base
+  before_action :validate_request
+
+  def leakmem
+    memory_mb = (params[:memory_mb]&.to_i || 100)
+    duration_s = (params[:duration_s]&.to_i || 30).seconds
+
+    start = Time.now
+    retainer = []
+    # Add `n` 1mb chunks of memory to the retainer array
+    memory_mb.times { retainer << "x" * 1.megabyte }
+
+    duration_taken = (Time.now - start).seconds
+    Kernel.sleep duration_s - duration_taken if duration_s > duration_taken
+
+    render text: "OK", content_type: 'text/plain'
+  end
+
+  def cpuspin
+    duration_s = (params[:duration_s]&.to_i || 30).seconds
+    end_time = Time.now + duration_s.seconds
+
+    rand while Time.now < end_time
+
+    render text: "OK", content_type: 'text/plain'
+  end
+
+  def sleep
+    duration_s = (params[:duration_s]&.to_i || 30).seconds
+    Kernel.sleep duration_s
+
+    render text: "OK", content_type: 'text/plain'
+  end
+
+  def kill
+    Process.kill("KILL", Process.pid)
+  end
+
+  private
+
+  def validate_request
+    secret = ENV['GITLAB_CHAOS_SECRET']
+    # GITLAB_CHAOS_SECRET is required unless you're running in Development mode
+    if !secret && !Rails.env.development?
+      render text: "chaos misconfigured: please configure GITLAB_CHAOS_SECRET when using GITLAB_ENABLE_CHAOS_ENDPOINTS outside of a development environment", content_type: 'text/plain', status: 500
+    end
+
+    return unless secret
+
+    unless request.headers["HTTP_X_CHAOS_SECRET"] == secret
+      render text: "To experience chaos, please set X-Chaos-Secret header", content_type: 'text/plain', status: 401
+    end
+  end
+end