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# frozen_string_literal: true
require 'spec_helper'
require_relative '../../../metrics_server/metrics_server'
# End-to-end tests for the metrics server process we use to serve metrics
# from forking applications (Sidekiq, Puma) to the Prometheus scraper.
RSpec.describe 'bin/metrics-server', :aggregate_failures do
let(:config_file) { Tempfile.new('gitlab.yml') }
let(:config) do
{
'test' => {
'monitoring' => {
'sidekiq_exporter' => {
'address' => 'localhost',
'enabled' => true,
'port' => 3807
}
}
}
}
end
context 'with a running server' do
before do
# We need to send a request to localhost
WebMock.allow_net_connect!
config_file.write(YAML.dump(config))
config_file.close
env = {
'GITLAB_CONFIG' => config_file.path,
'METRICS_SERVER_TARGET' => 'sidekiq',
'WIPE_METRICS_DIR' => '1'
}
@pid = Process.spawn(env, 'bin/metrics-server', pgroup: true)
end
after do
webmock_enable!
if @pid
pgrp = Process.getpgid(@pid)
Timeout.timeout(5) do
Process.kill('TERM', -pgrp)
Process.waitpid(@pid)
end
expect(Gitlab::ProcessManagement.process_alive?(@pid)).to be(false)
end
rescue Errno::ESRCH => _
# 'No such process' means the process died before
ensure
config_file.unlink
end
it 'serves /metrics endpoint' do
expect do
Timeout.timeout(5) do
http_ok = false
until http_ok
sleep 1
response = Gitlab::HTTP.try_get("http://localhost:3807/metrics", allow_local_requests: true)
http_ok = response&.success?
end
end
end.not_to raise_error
end
end
end
|
