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
|
/*
* Handle configuration
*
* Copyright (c) 2024 Runxi Yu <me@runxiyu.org>
* SPDX-License-Identifier: BSD-2-Clause
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package main
import (
"bufio"
"fmt"
"os"
"git.sr.ht/~emersion/go-scfg"
)
/*
* We use two structs. The first has all of its values as pointers, and scfg
* unmarshals the configuration to it. Then we take each value, dereference
* it, and throw it into a normal config struct without pointers.
* This means that any missing configuration options will simply cause a
* segmentation fault.
*/
var configWithPointers struct {
URL *string `scfg:"url"`
Prod *bool `scfg:"prod"`
Tmpl *string `scfg:"tmpl"`
Static *bool `scfg:"static"`
Listen struct {
Proto *string `scfg:"proto"`
Net *string `scfg:"net"`
Addr *string `scfg:"addr"`
} `scfg:"listen"`
DB struct {
Type *string `scfg:"type"`
Conn *string `scfg:"conn"`
} `scfg:"db"`
Auth struct {
Client *string `scfg:"client"`
Authorize *string `scfg:"authorize"`
Jwks *string `scfg:"jwks"`
Token *string `scfg:"token"`
Secret *string `scfg:"secret"`
} `scfg:"auth"`
Perf struct {
SendQ *int `scfg:"sendq"`
MessageArgumentsCap *int `scfg:"msg_args_cap"`
MessageBytesCap *int `scfg:"msg_bytes_cap"`
ReadHeaderTimeout *int `scfg:"read_header_timeout"`
} `scfg:"perf"`
}
var config struct {
URL string
Prod bool
Tmpl string
Static bool
Listen struct {
Proto string
Net string
Addr string
}
DB struct {
Type string
Conn string
}
Auth struct {
Client string
Authorize string
Jwks string
Token string
Secret string
}
Perf struct {
SendQ int
MessageArgumentsCap int
MessageBytesCap int
ReadHeaderTimeout int
} `scfg:"perf"`
}
func fetchConfig(path string) error {
f, err := os.Open(path)
if err != nil {
return fmt.Errorf("error opening configuration file: %w", err)
}
err = scfg.NewDecoder(bufio.NewReader(f)).Decode(&configWithPointers)
if err != nil {
return fmt.Errorf("error decoding configuration file: %w", err)
}
config.URL = *(configWithPointers.URL)
config.Prod = *(configWithPointers.Prod)
config.Tmpl = *(configWithPointers.Tmpl)
config.Static = *(configWithPointers.Static)
config.Listen.Proto = *(configWithPointers.Listen.Proto)
config.Listen.Net = *(configWithPointers.Listen.Net)
config.Listen.Addr = *(configWithPointers.Listen.Addr)
config.DB.Type = *(configWithPointers.DB.Type)
config.DB.Conn = *(configWithPointers.DB.Conn)
config.Auth.Client = *(configWithPointers.Auth.Client)
config.Auth.Authorize = *(configWithPointers.Auth.Authorize)
config.Auth.Jwks = *(configWithPointers.Auth.Jwks)
config.Auth.Token = *(configWithPointers.Auth.Token)
config.Auth.Secret = *(configWithPointers.Auth.Secret)
config.Perf.SendQ = *(configWithPointers.Perf.SendQ)
config.Perf.MessageArgumentsCap = *(configWithPointers.Perf.MessageArgumentsCap)
config.Perf.MessageBytesCap = *(configWithPointers.Perf.MessageBytesCap)
config.Perf.ReadHeaderTimeout = *(configWithPointers.Perf.ReadHeaderTimeout)
return nil
}
|
