|
1
|
|
|
package postgres |
|
2
|
|
|
|
|
3
|
|
|
import ( |
|
4
|
|
|
"context" |
|
5
|
|
|
"strings" |
|
6
|
|
|
"time" |
|
7
|
|
|
|
|
8
|
|
|
"github.com/jackc/pgx/v5" |
|
9
|
|
|
|
|
10
|
|
|
"github.com/jackc/pgx/v5/pgxpool" |
|
11
|
|
|
|
|
12
|
|
|
"github.com/Masterminds/squirrel" |
|
13
|
|
|
) |
|
14
|
|
|
|
|
15
|
|
|
// Postgres - Structure for Postresql instance |
|
16
|
|
|
type Postgres struct { |
|
17
|
|
|
ReadPool *pgxpool.Pool |
|
18
|
|
|
WritePool *pgxpool.Pool |
|
19
|
|
|
|
|
20
|
|
|
Builder squirrel.StatementBuilderType |
|
21
|
|
|
// options |
|
22
|
|
|
maxDataPerWrite int |
|
23
|
|
|
maxRetries int |
|
24
|
|
|
watchBufferSize int |
|
25
|
|
|
maxConnectionLifeTime time.Duration |
|
26
|
|
|
maxConnectionIdleTime time.Duration |
|
27
|
|
|
maxOpenConnections int |
|
28
|
|
|
maxIdleConnections int |
|
29
|
|
|
} |
|
30
|
|
|
|
|
31
|
|
|
// New - Creates new postgresql db instance |
|
32
|
|
|
func New(uri string, opts ...Option) (*Postgres, error) { |
|
33
|
|
|
pg := &Postgres{ |
|
34
|
|
|
maxOpenConnections: _defaultMaxOpenConnections, |
|
35
|
|
|
maxIdleConnections: _defaultMaxIdleConnections, |
|
36
|
|
|
maxDataPerWrite: _defaultMaxDataPerWrite, |
|
37
|
|
|
maxRetries: _defaultMaxRetries, |
|
38
|
|
|
watchBufferSize: _defaultWatchBufferSize, |
|
39
|
|
|
} |
|
40
|
|
|
|
|
41
|
|
|
// Custom options |
|
42
|
|
|
for _, opt := range opts { |
|
43
|
|
|
opt(pg) |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
|
|
pg.Builder = squirrel.StatementBuilder.PlaceholderFormat(squirrel.Dollar) |
|
47
|
|
|
|
|
48
|
|
|
writeConfig, err := pgxpool.ParseConfig(uri) |
|
49
|
|
|
if err != nil { |
|
50
|
|
|
return nil, err |
|
51
|
|
|
} |
|
52
|
|
|
|
|
53
|
|
|
readConfig, err := pgxpool.ParseConfig(uri) |
|
54
|
|
|
if err != nil { |
|
55
|
|
|
return nil, err |
|
56
|
|
|
} |
|
57
|
|
|
|
|
58
|
|
|
setDefaultQueryExecMode(writeConfig.ConnConfig) |
|
59
|
|
|
setDefaultQueryExecMode(readConfig.ConnConfig) |
|
60
|
|
|
|
|
61
|
|
|
writeConfig.MinConns = int32(pg.maxIdleConnections) |
|
62
|
|
|
readConfig.MinConns = int32(pg.maxIdleConnections) |
|
63
|
|
|
|
|
64
|
|
|
writeConfig.MaxConns = int32(pg.maxOpenConnections) |
|
65
|
|
|
readConfig.MaxConns = int32(pg.maxOpenConnections) |
|
66
|
|
|
|
|
67
|
|
|
writeConfig.MaxConnIdleTime = pg.maxConnectionIdleTime |
|
68
|
|
|
readConfig.MaxConnIdleTime = pg.maxConnectionIdleTime |
|
69
|
|
|
|
|
70
|
|
|
writeConfig.MaxConnLifetime = pg.maxConnectionLifeTime |
|
71
|
|
|
readConfig.MaxConnLifetime = pg.maxConnectionLifeTime |
|
72
|
|
|
|
|
73
|
|
|
writeConfig.MaxConnLifetimeJitter = time.Duration(0.2 * float64(pg.maxConnectionLifeTime)) |
|
74
|
|
|
readConfig.MaxConnLifetimeJitter = time.Duration(0.2 * float64(pg.maxConnectionLifeTime)) |
|
75
|
|
|
|
|
76
|
|
|
initialContext, cancelInit := context.WithTimeout(context.Background(), 5*time.Second) |
|
77
|
|
|
defer cancelInit() |
|
78
|
|
|
|
|
79
|
|
|
pg.WritePool, err = pgxpool.NewWithConfig(initialContext, writeConfig) |
|
80
|
|
|
if err != nil { |
|
81
|
|
|
return nil, err |
|
82
|
|
|
} |
|
83
|
|
|
pg.ReadPool, err = pgxpool.NewWithConfig(initialContext, readConfig) |
|
84
|
|
|
if err != nil { |
|
85
|
|
|
return nil, err |
|
86
|
|
|
} |
|
87
|
|
|
|
|
88
|
|
|
return pg, nil |
|
89
|
|
|
} |
|
90
|
|
|
|
|
91
|
|
|
func (p *Postgres) GetMaxDataPerWrite() int { |
|
92
|
|
|
return p.maxDataPerWrite |
|
93
|
|
|
} |
|
94
|
|
|
|
|
95
|
|
|
func (p *Postgres) GetMaxRetries() int { |
|
96
|
|
|
return p.maxRetries |
|
97
|
|
|
} |
|
98
|
|
|
|
|
99
|
|
|
func (p *Postgres) GetWatchBufferSize() int { |
|
100
|
|
|
return p.watchBufferSize |
|
101
|
|
|
} |
|
102
|
|
|
|
|
103
|
|
|
// GetEngineType - Get the engine type which is postgresql in string |
|
104
|
|
|
func (p *Postgres) GetEngineType() string { |
|
105
|
|
|
return "postgres" |
|
106
|
|
|
} |
|
107
|
|
|
|
|
108
|
|
|
// Close - Close postgresql instance |
|
109
|
|
|
func (p *Postgres) Close() error { |
|
110
|
|
|
p.ReadPool.Close() |
|
111
|
|
|
p.WritePool.Close() |
|
112
|
|
|
return nil |
|
113
|
|
|
} |
|
114
|
|
|
|
|
115
|
|
|
// IsReady - Check if database is ready |
|
116
|
|
|
func (p *Postgres) IsReady(ctx context.Context) (bool, error) { |
|
117
|
|
|
ctx, cancel := context.WithTimeout(ctx, 2*time.Second) |
|
118
|
|
|
defer cancel() |
|
119
|
|
|
if err := p.ReadPool.Ping(ctx); err != nil { |
|
120
|
|
|
return false, err |
|
121
|
|
|
} |
|
122
|
|
|
return true, nil |
|
123
|
|
|
} |
|
124
|
|
|
|
|
125
|
|
|
var queryExecModes = map[string]pgx.QueryExecMode{ |
|
126
|
|
|
"cache_statement": pgx.QueryExecModeCacheStatement, |
|
127
|
|
|
"cache_describe": pgx.QueryExecModeCacheDescribe, |
|
128
|
|
|
"describe_exec": pgx.QueryExecModeDescribeExec, |
|
129
|
|
|
"mode_exec": pgx.QueryExecModeExec, |
|
130
|
|
|
"simple_protocol": pgx.QueryExecModeSimpleProtocol, |
|
131
|
|
|
} |
|
132
|
|
|
|
|
133
|
|
|
func setDefaultQueryExecMode(config *pgx.ConnConfig) { |
|
134
|
|
|
// Default mode if no specific mode is found in the connection string |
|
135
|
|
|
defaultMode := "cache_statement" |
|
136
|
|
|
|
|
137
|
|
|
// Iterate through the map keys to check if any are mentioned in the connection string |
|
138
|
|
|
for key := range queryExecModes { |
|
139
|
|
|
if strings.Contains(config.ConnString(), "default_query_exec_mode="+key) { |
|
140
|
|
|
config.DefaultQueryExecMode = queryExecModes[key] |
|
141
|
|
|
return |
|
142
|
|
|
} |
|
143
|
|
|
} |
|
144
|
|
|
|
|
145
|
|
|
// Set to default mode if no matching mode is found |
|
146
|
|
|
config.DefaultQueryExecMode = queryExecModes[defaultMode] |
|
147
|
|
|
} |
|
148
|
|
|
|
Permify /
permify
