-
Notifications
You must be signed in to change notification settings - Fork 13
/
configuration.go
77 lines (65 loc) · 2.46 KB
/
configuration.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
// Copyright 2022 Dimitrij Drus <dadrus@gmx.de>
//
// 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.
//
// SPDX-License-Identifier: Apache-2.0
package config
import (
"fmt"
"os"
"github.com/mitchellh/mapstructure"
"github.com/dadrus/heimdall/internal/config/parser"
)
type Configuration struct { //nolint:musttag
Serve ServeConfig `koanf:"serve"`
Log LoggingConfig `koanf:"log"`
Tracing TracingConfig `koanf:"tracing"`
Metrics MetricsConfig `koanf:"metrics"`
Profiling ProfilingConfig `koanf:"profiling"`
Signer SignerConfig `koanf:"signer"`
Cache CacheConfig `koanf:"cache"`
Rules Rules `koanf:"rules,omitempty"`
}
func NewConfiguration(envPrefix EnvVarPrefix, configFile ConfigurationPath) (*Configuration, error) {
// copy defaults
result := defaultConfig()
opts := []parser.Option{
parser.WithDecodeHookFunc(mapstructure.StringToTimeDurationHookFunc()),
parser.WithDecodeHookFunc(mapstructure.StringToSliceHookFunc(",")),
parser.WithDecodeHookFunc(stringToByteSizeHookFunc()),
parser.WithDecodeHookFunc(logLevelDecodeHookFunc),
parser.WithDecodeHookFunc(logFormatDecodeHookFunc),
parser.WithDecodeHookFunc(decodeTLSCipherSuiteHookFunc),
parser.WithDecodeHookFunc(decodeTLSMinVersionHookFunc),
parser.WithEnvPrefix(string(envPrefix)),
parser.WithDefaultConfigFilename("heimdall.yaml"),
parser.WithConfigFile(string(configFile)),
parser.WithConfigValidator(ValidateConfig),
}
// if no config file provided, the lookup order for the heimdall.yaml file is:
//
// 1. current working directory
// 2. $HOME/.config
// 3. /etc/heimdall/
pwd, err := os.Getwd()
if err == nil {
opts = append(opts, parser.WithConfigLookupDir(pwd))
}
homeDir, err := os.UserHomeDir()
if err == nil {
opts = append(opts, parser.WithConfigLookupDir(fmt.Sprintf("%s/.config/", homeDir)))
}
opts = append(opts, parser.WithConfigLookupDir("/etc/heimdall/"))
err = parser.New(opts...).Load(&result)
return &result, err
}