/
dsn.go
102 lines (88 loc) · 2.27 KB
/
dsn.go
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
// Copyright 2022 Antrea Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package snowflake
import (
"fmt"
"os"
"strconv"
sf "github.com/snowflakedb/gosnowflake"
)
type MissingEnvVariableError struct {
envVarName string
}
func (e MissingEnvVariableError) Error() string {
return fmt.Sprintf("env variable '%s' is not set", e.envVarName)
}
func SetWarehouse(name string) func(*sf.Config) {
return func(cfg *sf.Config) {
cfg.Warehouse = name
}
}
func SetDatabase(name string) func(*sf.Config) {
return func(cfg *sf.Config) {
cfg.Database = name
}
}
func SetSchema(name string) func(*sf.Config) {
return func(cfg *sf.Config) {
cfg.Schema = name
}
}
// GetDSN constructs a DSN based on the test connection parameters
func GetDSN(options ...func(*sf.Config)) (string, *sf.Config, error) {
env := func(k string, failOnMissing bool) (string, error) {
if value := os.Getenv(k); value != "" {
return value, nil
}
if failOnMissing {
return "", MissingEnvVariableError{k}
}
return "", nil
}
account, err := env("SNOWFLAKE_ACCOUNT", true)
if err != nil {
return "", nil, err
}
user, err := env("SNOWFLAKE_USER", true)
if err != nil {
return "", nil, err
}
password, err := env("SNOWFLAKE_PASSWORD", true)
if err != nil {
return "", nil, err
}
host, _ := env("SNOWFLAKE_HOST", false)
portStr, _ := env("SNOWFLAKE_PORT", false)
protocol, _ := env("SNOWFLAKE_PROTOCOL", false)
port := 443 // snowflake default port
if len(portStr) > 0 {
port, err = strconv.Atoi(portStr)
if err != nil {
return "", nil, err
}
}
cfg := &sf.Config{
Account: account,
User: user,
Password: password,
Host: host,
Port: port,
Protocol: protocol,
}
for _, fn := range options {
fn(cfg)
}
dsn, err := sf.DSN(cfg)
return dsn, cfg, err
}