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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
|
# frozen_string_literal: true
require 'spec_helper'
describe Projects::Prometheus::Alerts::CreateEventsService do
let(:user) { create(:user) }
let_it_be(:project) { create(:project) }
let(:metric) { create(:prometheus_metric, project: project) }
let(:service) { described_class.new(project, user, alerts_payload) }
shared_examples 'events persisted' do |expected_count|
subject { service.execute }
it 'returns proper amount of created events' do
expect(subject.size).to eq(expected_count)
end
it 'increments event count' do
expect { subject }.to change { PrometheusAlertEvent.count }.to(expected_count)
end
end
shared_examples 'no events persisted' do
subject { service.execute }
it 'returns no created events' do
expect(subject).to be_empty
end
it 'does not change event count' do
expect { subject }.not_to change { PrometheusAlertEvent.count }
end
end
shared_examples 'self managed events persisted' do
subject { service.execute }
it 'returns created events' do
expect(subject).not_to be_empty
end
it 'does change self managed event count' do
expect { subject }.to change { SelfManagedPrometheusAlertEvent.count }
end
end
context 'with valid alerts_payload' do
let!(:alert) { create(:prometheus_alert, prometheus_metric: metric, project: project) }
let(:events) { service.execute }
context 'with a firing payload' do
let(:started_at) { truncate_to_second(Time.current) }
let(:firing_event) { alert_payload(status: 'firing', started_at: started_at) }
let(:alerts_payload) { { 'alerts' => [firing_event] } }
it_behaves_like 'events persisted', 1
it 'returns created event' do
event = events.first
expect(event).to be_firing
expect(event.started_at).to eq(started_at)
expect(event.ended_at).to be_nil
end
context 'with 2 different firing events' do
let(:another_firing_event) { alert_payload(status: 'firing', started_at: started_at + 1) }
let(:alerts_payload) { { 'alerts' => [firing_event, another_firing_event] } }
it_behaves_like 'events persisted', 2
end
context 'with already persisted firing event' do
before do
service.execute
end
it_behaves_like 'no events persisted'
end
context 'with duplicate payload' do
let(:alerts_payload) { { 'alerts' => [firing_event, firing_event] } }
it_behaves_like 'events persisted', 1
end
end
context 'with a resolved payload' do
let(:started_at) { truncate_to_second(Time.current) }
let(:ended_at) { started_at + 1 }
let(:payload_key) { PrometheusAlertEvent.payload_key_for(alert.prometheus_metric_id, utc_rfc3339(started_at)) }
let(:resolved_event) { alert_payload(status: 'resolved', started_at: started_at, ended_at: ended_at) }
let(:alerts_payload) { { 'alerts' => [resolved_event] } }
context 'with a matching firing event' do
before do
create(:prometheus_alert_event,
prometheus_alert: alert,
payload_key: payload_key,
started_at: started_at)
end
it 'does not create an additional event' do
expect { service.execute }.not_to change { PrometheusAlertEvent.count }
end
it 'marks firing event as `resolved`' do
expect(events.size).to eq(1)
event = events.first
expect(event).to be_resolved
expect(event.started_at).to eq(started_at)
expect(event.ended_at).to eq(ended_at)
end
context 'with duplicate payload' do
let(:alerts_payload) { { 'alerts' => [resolved_event, resolved_event] } }
it 'does not create an additional event' do
expect { service.execute }.not_to change { PrometheusAlertEvent.count }
end
it 'marks firing event as `resolved` only once' do
expect(events.size).to eq(1)
end
end
end
context 'without a matching firing event' do
context 'due to payload_key' do
let(:payload_key) { 'some other payload_key' }
before do
create(:prometheus_alert_event,
prometheus_alert: alert,
payload_key: payload_key,
started_at: started_at)
end
it_behaves_like 'no events persisted'
end
context 'due to status' do
before do
create(:prometheus_alert_event, :resolved,
prometheus_alert: alert,
started_at: started_at)
end
it_behaves_like 'no events persisted'
end
end
context 'with already resolved event' do
before do
service.execute
end
it_behaves_like 'no events persisted'
end
end
context 'with a metric from another project' do
let(:another_project) { create(:project) }
let(:metric) { create(:prometheus_metric, project: another_project) }
let(:alerts_payload) { { 'alerts' => [alert_payload] } }
let!(:alert) do
create(:prometheus_alert,
prometheus_metric: metric,
project: another_project)
end
it_behaves_like 'no events persisted'
end
end
context 'with invalid payload' do
let(:alert) { create(:prometheus_alert, prometheus_metric: metric, project: project) }
describe '`alerts` key' do
context 'is missing' do
let(:alerts_payload) { {} }
it_behaves_like 'no events persisted'
end
context 'is nil' do
let(:alerts_payload) { { 'alerts' => nil } }
it_behaves_like 'no events persisted'
end
context 'is empty' do
let(:alerts_payload) { { 'alerts' => [] } }
it_behaves_like 'no events persisted'
end
context 'is not a Hash' do
let(:alerts_payload) { { 'alerts' => [:not_a_hash] } }
it_behaves_like 'no events persisted'
end
describe '`status`' do
context 'is missing' do
let(:alerts_payload) { { 'alerts' => [alert_payload(status: nil)] } }
it_behaves_like 'no events persisted'
end
context 'is invalid' do
let(:alerts_payload) { { 'alerts' => [alert_payload(status: 'invalid')] } }
it_behaves_like 'no events persisted'
end
end
describe '`started_at`' do
context 'is missing' do
let(:alerts_payload) { { 'alerts' => [alert_payload(started_at: nil)] } }
it_behaves_like 'no events persisted'
end
context 'is invalid' do
let(:alerts_payload) { { 'alerts' => [alert_payload(started_at: 'invalid date')] } }
it_behaves_like 'no events persisted'
end
end
describe '`ended_at`' do
context 'is missing and status is resolved' do
let(:alerts_payload) { { 'alerts' => [alert_payload(ended_at: nil, status: 'resolved')] } }
it_behaves_like 'no events persisted'
end
context 'is invalid and status is resolved' do
let(:alerts_payload) { { 'alerts' => [alert_payload(ended_at: 'invalid date', status: 'resolved')] } }
it_behaves_like 'no events persisted'
end
end
describe '`labels`' do
describe '`gitlab_alert_id`' do
context 'is missing' do
let(:alerts_payload) { { 'alerts' => [alert_payload(gitlab_alert_id: nil)] } }
it_behaves_like 'no events persisted'
end
context 'is missing but title is given' do
let(:alerts_payload) { { 'alerts' => [alert_payload(gitlab_alert_id: nil, title: 'alert')] } }
it_behaves_like 'self managed events persisted'
end
context 'is missing and environment name is given' do
let(:environment) { create(:environment, project: project) }
let(:alerts_payload) { { 'alerts' => [alert_payload(gitlab_alert_id: nil, title: 'alert', environment: environment.name)] } }
it_behaves_like 'self managed events persisted'
it 'associates the environment to the alert event' do
service.execute
expect(SelfManagedPrometheusAlertEvent.last.environment).to eq environment
end
end
context 'is invalid' do
let(:alerts_payload) { { 'alerts' => [alert_payload(gitlab_alert_id: '-1')] } }
it_behaves_like 'no events persisted'
end
end
end
end
end
private
def alert_payload(status: 'firing', started_at: Time.current, ended_at: Time.current, gitlab_alert_id: alert.prometheus_metric_id, title: nil, environment: nil)
payload = {}
payload['status'] = status if status
payload['startsAt'] = utc_rfc3339(started_at) if started_at
payload['endsAt'] = utc_rfc3339(ended_at) if ended_at
payload['labels'] = {}
payload['labels']['gitlab_alert_id'] = gitlab_alert_id.to_s if gitlab_alert_id
payload['labels']['alertname'] = title if title
payload['labels']['gitlab_environment_name'] = environment if environment
payload
end
# Example: 2018-09-27T18:25:31.079079416Z
def utc_rfc3339(date)
date.utc.rfc3339
rescue
date
end
def truncate_to_second(date)
date.change(usec: 0)
end
end
|