summaryrefslogtreecommitdiff
path: root/spec/models/prometheus_metric_spec.rb
blob: 93abef063cb56c1ca54fc3300d0ea8e2cc3a6b34 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
# frozen_string_literal: true

require 'spec_helper'

describe PrometheusMetric do
  subject { build(:prometheus_metric) }

  it_behaves_like 'having unique enum values'

  it { is_expected.to belong_to(:project) }
  it { is_expected.to validate_presence_of(:title) }
  it { is_expected.to validate_presence_of(:query) }
  it { is_expected.to validate_presence_of(:group) }

  describe 'common metrics' do
    using RSpec::Parameterized::TableSyntax

    where(:common, :with_project, :result) do
      false | true | true
      false | false | false
      true  | true | false
      true  | false | true
    end

    with_them do
      before do
        subject.common = common
        subject.project = with_project ? build(:project) : nil
      end

      it { expect(subject.valid?).to eq(result) }
    end
  end

  describe '#query_series' do
    using RSpec::Parameterized::TableSyntax

    where(:legend, :type) do
      'Some other legend' | NilClass
      'Status Code'       | Array
    end

    with_them do
      before do
        subject.legend = legend
      end

      it { expect(subject.query_series).to be_a(type) }
    end
  end

  describe '#group_title' do
    shared_examples 'group_title' do |group, title|
      subject { build(:prometheus_metric, group: group).group_title }

      it "returns text #{title} for group #{group}" do
        expect(subject).to eq(title)
      end
    end

    it_behaves_like 'group_title', :nginx_ingress_vts, 'Response metrics (NGINX Ingress VTS)'
    it_behaves_like 'group_title', :nginx_ingress, 'Response metrics (NGINX Ingress)'
    it_behaves_like 'group_title', :ha_proxy, 'Response metrics (HA Proxy)'
    it_behaves_like 'group_title', :aws_elb, 'Response metrics (AWS ELB)'
    it_behaves_like 'group_title', :nginx, 'Response metrics (NGINX)'
    it_behaves_like 'group_title', :kubernetes, 'System metrics (Kubernetes)'
    it_behaves_like 'group_title', :business, 'Business metrics (Custom)'
    it_behaves_like 'group_title', :response, 'Response metrics (Custom)'
    it_behaves_like 'group_title', :system, 'System metrics (Custom)'
    it_behaves_like 'group_title', :cluster_health, 'Cluster Health'
  end

  describe '#priority' do
    using RSpec::Parameterized::TableSyntax

    where(:group, :priority) do
      :nginx_ingress_vts | 10
      :nginx_ingress     | 10
      :ha_proxy          | 10
      :aws_elb           | 10
      :nginx             | 10
      :kubernetes        | 5
      :business          | 0
      :response          | -5
      :system            | -10
      :cluster_health    | 10
    end

    with_them do
      before do
        subject.group = group
      end

      it { expect(subject.priority).to eq(priority) }
    end
  end

  describe '#required_metrics' do
    using RSpec::Parameterized::TableSyntax

    where(:group, :required_metrics) do
      :nginx_ingress_vts | %w(nginx_upstream_responses_total nginx_upstream_response_msecs_avg)
      :nginx_ingress     | %w(nginx_ingress_controller_requests nginx_ingress_controller_ingress_upstream_latency_seconds_sum)
      :ha_proxy          | %w(haproxy_frontend_http_requests_total haproxy_frontend_http_responses_total)
      :aws_elb           | %w(aws_elb_request_count_sum aws_elb_latency_average aws_elb_httpcode_backend_5_xx_sum)
      :nginx             | %w(nginx_server_requests nginx_server_requestMsec)
      :kubernetes        | %w(container_memory_usage_bytes container_cpu_usage_seconds_total)
      :business          | %w()
      :response          | %w()
      :system            | %w()
      :cluster_health    | %w(container_memory_usage_bytes container_cpu_usage_seconds_total)
    end

    with_them do
      before do
        subject.group = group
      end

      it { expect(subject.required_metrics).to eq(required_metrics) }
    end
  end

  describe '#to_query_metric' do
    it 'converts to queryable metric object' do
      expect(subject.to_query_metric).to be_instance_of(Gitlab::Prometheus::Metric)
    end

    it 'queryable metric object has title' do
      expect(subject.to_query_metric.title).to eq(subject.title)
    end

    it 'queryable metric object has y_label' do
      expect(subject.to_query_metric.y_label).to eq(subject.y_label)
    end

    it 'queryable metric has no required_metric' do
      expect(subject.to_query_metric.required_metrics).to eq([])
    end

    it 'queryable metric has weight 0' do
      expect(subject.to_query_metric.weight).to eq(0)
    end

    it 'queryable metrics has query description' do
      queries = [
        {
          query_range: subject.query,
          unit: subject.unit,
          label: subject.legend
        }
      ]

      expect(subject.to_query_metric.queries).to eq(queries)
    end
  end

  describe '#to_metric_hash' do
    it 'returns a hash suitable for inclusion on a metrics dashboard' do
      expected_output = {
        query_range: subject.query,
        unit: subject.unit,
        label: subject.legend,
        metric_id: subject.id
      }

      expect(subject.to_metric_hash).to eq(expected_output)
    end
  end
end