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
313
314
315
316
317
318
319
320
321
322
323
324
|
package store
import (
"context"
"fmt"
"time"
"github.com/jackc/pgx/v5"
"github.com/jackc/pgx/v5/pgxpool"
"yaum/internal/model"
)
type PostgresStore struct {
pool *pgxpool.Pool
}
func NewPostgresStore(ctx context.Context, connString string) (*PostgresStore, error) {
pool, err := pgxpool.New(ctx, connString)
if err != nil {
return nil, fmt.Errorf("erro ao conectar no postgres: %w", err)
}
if err := pool.Ping(ctx); err != nil {
return nil, fmt.Errorf("erro ao pingar postgres: %w", err)
}
return &PostgresStore{pool: pool}, nil
}
func (s *PostgresStore) Close() {
s.pool.Close()
}
// ---------------------------------------------------------------------------
// Services
// ---------------------------------------------------------------------------
func (s *PostgresStore) ListServices() ([]model.ServiceWithHeartbeat, error) {
query := `
SELECT
s.id, s.name, s.url, s.group_name, s.interval_seconds, s.is_active, s.created_at,
h.id AS heartbeat_id,
h.status_code,
h.response_time_ms,
h.is_up,
h.error_message,
h.tested_at
FROM services s
LEFT JOIN LATERAL (
SELECT id, status_code, response_time_ms, is_up, error_message, tested_at
FROM heartbeats
WHERE service_id = s.id
ORDER BY tested_at DESC
LIMIT 1
) h ON true
ORDER BY s.id
`
rows, err := s.pool.Query(context.Background(), query)
if err != nil {
return nil, fmt.Errorf("list services: %w", err)
}
defer rows.Close()
return pgx.CollectRows(rows, func(row pgx.CollectableRow) (model.ServiceWithHeartbeat, error) {
var (
swh model.ServiceWithHeartbeat
heartbeatID *int
statusCode *int
responseTimeMs *int64
isUp *bool
errorMessage *string
testedAt *time.Time
)
err := row.Scan(
&swh.ID, &swh.Name, &swh.URL, &swh.GroupName, &swh.IntervalSeconds, &swh.IsActive, &swh.CreatedAt,
&heartbeatID, &statusCode, &responseTimeMs, &isUp, &errorMessage, &testedAt,
)
if err != nil {
return swh, err
}
if heartbeatID != nil {
swh.LastHeartbeat = &model.Heartbeat{
ID: *heartbeatID,
ServiceID: swh.ID,
StatusCode: *statusCode,
ResponseTimeMs: *responseTimeMs,
IsUp: *isUp,
ErrorMessage: *errorMessage,
TestedAt: *testedAt,
}
}
return swh, nil
})
}
func (s *PostgresStore) ListActiveServices() ([]model.Service, error) {
query := `
SELECT id, name, url, group_name, interval_seconds, is_active, discord_webhook_url, alert_email, keyword_to_find, created_at
FROM services
WHERE is_active = true
ORDER BY id
`
rows, err := s.pool.Query(context.Background(), query)
if err != nil {
return nil, fmt.Errorf("list active services: %w", err)
}
defer rows.Close()
return pgx.CollectRows(rows, func(row pgx.CollectableRow) (model.Service, error) {
var svc model.Service
err := row.Scan(&svc.ID, &svc.Name, &svc.URL, &svc.GroupName, &svc.IntervalSeconds, &svc.IsActive, &svc.DiscordWebhookURL, &svc.AlertEmail, &svc.KeywordToFind, &svc.CreatedAt)
return svc, err
})
}
func (s *PostgresStore) GetService(id int) (*model.Service, error) {
query := `
SELECT id, name, url, group_name, interval_seconds, is_active, discord_webhook_url, alert_email, keyword_to_find, created_at
FROM services
WHERE id = $1
`
var svc model.Service
err := s.pool.QueryRow(context.Background(), query, id).
Scan(&svc.ID, &svc.Name, &svc.URL, &svc.GroupName, &svc.IntervalSeconds, &svc.IsActive, &svc.DiscordWebhookURL, &svc.AlertEmail, &svc.KeywordToFind, &svc.CreatedAt)
if err != nil {
if err == pgx.ErrNoRows {
return nil, nil
}
return nil, fmt.Errorf("get service: %w", err)
}
return &svc, nil
}
func (s *PostgresStore) AddService(svc model.Service) (*model.Service, error) {
query := `
INSERT INTO services (name, url, group_name, interval_seconds, discord_webhook_url, alert_email, keyword_to_find)
VALUES ($1, $2, $3, $4, $5, $6, $7)
RETURNING id, is_active, created_at
`
err := s.pool.QueryRow(context.Background(), query, svc.Name, svc.URL, svc.GroupName, svc.IntervalSeconds, svc.DiscordWebhookURL, svc.AlertEmail, svc.KeywordToFind).
Scan(&svc.ID, &svc.IsActive, &svc.CreatedAt)
if err != nil {
return nil, fmt.Errorf("add service: %w", err)
}
return &svc, nil
}
func (s *PostgresStore) ToggleService(id int) (*model.Service, error) {
query := `
UPDATE services
SET is_active = NOT is_active
WHERE id = $1
RETURNING id, name, url, group_name, interval_seconds, is_active, discord_webhook_url, alert_email, keyword_to_find, created_at
`
var svc model.Service
err := s.pool.QueryRow(context.Background(), query, id).
Scan(&svc.ID, &svc.Name, &svc.URL, &svc.GroupName, &svc.IntervalSeconds, &svc.IsActive, &svc.DiscordWebhookURL, &svc.AlertEmail, &svc.KeywordToFind, &svc.CreatedAt)
if err != nil {
if err == pgx.ErrNoRows {
return nil, fmt.Errorf("servico nao encontrado")
}
return nil, fmt.Errorf("toggle service: %w", err)
}
return &svc, nil
}
func (s *PostgresStore) UpdateService(id int, svc model.Service) (*model.Service, error) {
query := `
UPDATE services
SET name = $1, url = $2, group_name = $3, interval_seconds = $4, discord_webhook_url = $5, alert_email = $6, keyword_to_find = $7
WHERE id = $8
RETURNING id, name, url, group_name, interval_seconds, is_active, discord_webhook_url, alert_email, keyword_to_find, created_at
`
var updated model.Service
err := s.pool.QueryRow(context.Background(), query,
svc.Name, svc.URL, svc.GroupName, svc.IntervalSeconds, svc.DiscordWebhookURL, svc.AlertEmail, svc.KeywordToFind, id,
).Scan(&updated.ID, &updated.Name, &updated.URL, &updated.GroupName, &updated.IntervalSeconds, &updated.IsActive, &updated.DiscordWebhookURL, &updated.AlertEmail, &updated.KeywordToFind, &updated.CreatedAt)
if err != nil {
if err == pgx.ErrNoRows {
return nil, fmt.Errorf("servico nao encontrado")
}
return nil, fmt.Errorf("update service: %w", err)
}
return &updated, nil
}
func (s *PostgresStore) DeleteService(id int) error {
tag, err := s.pool.Exec(context.Background(), "DELETE FROM services WHERE id = $1", id)
if err != nil {
return fmt.Errorf("delete service: %w", err)
}
if tag.RowsAffected() == 0 {
return fmt.Errorf("servico nao encontrado")
}
return nil
}
// ---------------------------------------------------------------------------
// Heartbeats
// ---------------------------------------------------------------------------
func (s *PostgresStore) AddHeartbeat(hb model.Heartbeat) error {
query := `
INSERT INTO heartbeats (service_id, status_code, response_time_ms, is_up, error_message, tested_at)
VALUES ($1, $2, $3, $4, $5, $6)
`
_, err := s.pool.Exec(context.Background(), query,
hb.ServiceID, hb.StatusCode, hb.ResponseTimeMs, hb.IsUp, hb.ErrorMessage, hb.TestedAt)
if err != nil {
return fmt.Errorf("add heartbeat: %w", err)
}
return nil
}
func (s *PostgresStore) GetHistory(serviceID int, limit int) ([]model.Heartbeat, error) {
query := `
SELECT id, service_id, status_code, response_time_ms, is_up, error_message, tested_at
FROM heartbeats
WHERE service_id = $1
ORDER BY tested_at DESC
LIMIT $2
`
rows, err := s.pool.Query(context.Background(), query, serviceID, limit)
if err != nil {
return nil, fmt.Errorf("get history: %w", err)
}
defer rows.Close()
return pgx.CollectRows(rows, func(row pgx.CollectableRow) (model.Heartbeat, error) {
var hb model.Heartbeat
err := row.Scan(&hb.ID, &hb.ServiceID, &hb.StatusCode, &hb.ResponseTimeMs, &hb.IsUp, &hb.ErrorMessage, &hb.TestedAt)
return hb, err
})
}
func (s *PostgresStore) GetLastHeartbeat(serviceID int) (*model.Heartbeat, error) {
query := `
SELECT id, service_id, status_code, response_time_ms, is_up, error_message, tested_at
FROM heartbeats
WHERE service_id = $1
ORDER BY tested_at DESC
LIMIT 1
`
hb := &model.Heartbeat{}
err := s.pool.QueryRow(context.Background(), query, serviceID).
Scan(&hb.ID, &hb.ServiceID, &hb.StatusCode, &hb.ResponseTimeMs, &hb.IsUp, &hb.ErrorMessage, &hb.TestedAt)
if err != nil {
if err == pgx.ErrNoRows {
return nil, nil
}
return nil, fmt.Errorf("get last heartbeat: %w", err)
}
return hb, nil
}
func (s *PostgresStore) GetServiceStats(serviceID int) (*model.ServiceStats, error) {
query := `
SELECT
COALESCE(SUM(CASE WHEN tested_at >= NOW() - INTERVAL '24 hours' THEN 1 ELSE 0 END), 0),
COALESCE(SUM(CASE WHEN tested_at >= NOW() - INTERVAL '24 hours' AND is_up THEN 1 ELSE 0 END), 0),
COALESCE(AVG(response_time_ms) FILTER (WHERE tested_at >= NOW() - INTERVAL '24 hours'), 0),
COALESCE(SUM(CASE WHEN tested_at >= NOW() - INTERVAL '7 days' THEN 1 ELSE 0 END), 0),
COALESCE(SUM(CASE WHEN tested_at >= NOW() - INTERVAL '7 days' AND is_up THEN 1 ELSE 0 END), 0),
COALESCE(AVG(response_time_ms) FILTER (WHERE tested_at >= NOW() - INTERVAL '7 days'), 0),
COALESCE(SUM(CASE WHEN tested_at >= NOW() - INTERVAL '30 days' THEN 1 ELSE 0 END), 0),
COALESCE(SUM(CASE WHEN tested_at >= NOW() - INTERVAL '30 days' AND is_up THEN 1 ELSE 0 END), 0),
COALESCE(AVG(response_time_ms) FILTER (WHERE tested_at >= NOW() - INTERVAL '30 days'), 0)
FROM heartbeats
WHERE service_id = $1
`
var (
t24, u24 int32
a24 float64
t7, u7 int32
a7 float64
t30, u30 int32
a30 float64
)
err := s.pool.QueryRow(context.Background(), query, serviceID).
Scan(&t24, &u24, &a24, &t7, &u7, &a7, &t30, &u30, &a30)
if err != nil {
return nil, fmt.Errorf("get service stats: %w", err)
}
pct := func(up, total int32) float64 {
if total == 0 {
return 0
}
return float64(up) / float64(total) * 100
}
return &model.ServiceStats{
ServiceID: serviceID,
Uptime24h: pct(u24, t24),
Uptime7d: pct(u7, t7),
Uptime30d: pct(u30, t30),
AvgResponseMs24h: a24,
AvgResponseMs7d: a7,
AvgResponseMs30d: a30,
TotalChecks24h: int(t24),
TotalChecks7d: int(t7),
TotalChecks30d: int(t30),
}, nil
}
func (s *PostgresStore) GetActiveMaintenance(now time.Time) (*model.Maintenance, error) {
query := `
SELECT id, title, start_time, end_time, is_active
FROM maintenances
WHERE is_active = true AND start_time <= $1 AND end_time > $1
LIMIT 1
`
var m model.Maintenance
err := s.pool.QueryRow(context.Background(), query, now).
Scan(&m.ID, &m.Title, &m.StartTime, &m.EndTime, &m.IsActive)
if err != nil {
if err == pgx.ErrNoRows {
return nil, nil
}
return nil, fmt.Errorf("get active maintenance: %w", err)
}
return &m, nil
}
|
