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Implement parsing configuration from environment variables

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This commit is contained in:
egerong
2025-11-30 16:32:31 +02:00
parent 32518eba64
commit 3bc98bfd15
3 changed files with 24 additions and 11 deletions
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cmd/init.go
+14 -2
View File
@@ -8,6 +8,7 @@ import (
"log"
"os"
"path/filepath"
"strings"
"time"
"html/template"
@@ -52,6 +53,7 @@ import (
kjson "github.com/knadh/koanf/parsers/json"
"github.com/knadh/koanf/parsers/toml"
"github.com/knadh/koanf/providers/confmap"
"github.com/knadh/koanf/providers/env/v2"
"github.com/knadh/koanf/providers/file"
"github.com/knadh/koanf/providers/posflag"
"github.com/knadh/koanf/providers/rawbytes"
@@ -74,17 +76,27 @@ type constants struct {
MaxFileUploadSizeMB int
}
// Config loads config files into koanf.
// Config loads config from files and environment variables into koanf.
func initConfig(ko *koanf.Koanf) {
for _, f := range ko.Strings("config") {
log.Println("reading config file:", f)
if err := ko.Load(file.Provider(f), toml.Parser()); err != nil {
if os.IsNotExist(err) {
log.Fatal("error config file not found.")
log.Printf("WARNING: Config file not found. Continuing with defaults and environment variables.")
continue
}
log.Fatalf("error loading config from file: %v.", err)
}
}
// Load environment variables with `LIBREDESK_` prefix.
ko.Load(env.Provider(".", env.Opt{
Prefix: "LIBREDESK_",
TransformFunc: func(key, val string) (string, any) {
// Transform the key.
key = strings.ReplaceAll(strings.ToLower(strings.TrimPrefix(key, "LIBREDESK_")), "_", ".")
return key, val
},
}), nil)
}
// initFlags initializes the commandline flags.
go.mod
+2 -2
View File
@@ -20,6 +20,7 @@ require (
github.com/knadh/koanf/parsers/json v0.1.0
github.com/knadh/koanf/parsers/toml v0.1.0
github.com/knadh/koanf/providers/confmap v0.1.0
github.com/knadh/koanf/providers/env/v2 v2.0.0
github.com/knadh/koanf/providers/file v0.1.0
github.com/knadh/koanf/providers/posflag v0.1.0
github.com/knadh/koanf/providers/rawbytes v0.1.0
@@ -59,8 +60,7 @@ require (
github.com/gogs/chardet v0.0.0-20211120154057-b7413eaefb8f // indirect
github.com/jaytaylor/html2text v0.0.0-20230321000545-74c2419ad056 // indirect
github.com/klauspost/compress v1.18.0 // indirect
github.com/knadh/koanf/maps v0.1.1 // indirect
github.com/kr/text v0.2.0 // indirect
github.com/knadh/koanf/maps v0.1.2 // indirect
github.com/mattn/go-runewidth v0.0.15 // indirect
github.com/mitchellh/copystructure v1.2.0 // indirect
github.com/mitchellh/reflectwalk v1.0.2 // indirect
go.sum
+8 -7
View File
@@ -24,7 +24,6 @@ github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UF
github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
github.com/coreos/go-oidc/v3 v3.11.0 h1:Ia3MxdwpSw702YW0xgfmP1GVCMA9aEFWu12XUZ3/OtI=
github.com/coreos/go-oidc/v3 v3.11.0/go.mod h1:gE3LgjOgFoHi9a4ce4/tJczr0Ai2/BoDhf0r5lltWI0=
github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -93,14 +92,16 @@ github.com/knadh/go-i18n v0.1.0 h1:5+54yI2Fl0gwTzG+v5oSxBtTKxGB6qdj7Qg2AWg1WrY=
github.com/knadh/go-i18n v0.1.0/go.mod h1:htxE6ApwQQH+4VGQylaMH+BdyLJSS5JcEZGHvb+8+yE=
github.com/knadh/goyesql/v2 v2.2.0 h1:DNQIzgITmMTXA+z+jDzbXCpgr7fGD6Hp0AJ7ZLEAem4=
github.com/knadh/goyesql/v2 v2.2.0/go.mod h1:is+wK/XQBukYK3DdKfpJRyDH9U/ZTMyX2u6DFijjRnI=
github.com/knadh/koanf/maps v0.1.1 h1:G5TjmUh2D7G2YWf5SQQqSiHRJEjaicvU0KpypqB3NIs=
github.com/knadh/koanf/maps v0.1.1/go.mod h1:npD/QZY3V6ghQDdcQzl1W4ICNVTkohC8E73eI2xW4yI=
github.com/knadh/koanf/maps v0.1.2 h1:RBfmAW5CnZT+PJ1CVc1QSJKf4Xu9kxfQgYVQSu8hpbo=
github.com/knadh/koanf/maps v0.1.2/go.mod h1:npD/QZY3V6ghQDdcQzl1W4ICNVTkohC8E73eI2xW4yI=
github.com/knadh/koanf/parsers/json v0.1.0 h1:dzSZl5pf5bBcW0Acnu20Djleto19T0CfHcvZ14NJ6fU=
github.com/knadh/koanf/parsers/json v0.1.0/go.mod h1:ll2/MlXcZ2BfXD6YJcjVFzhG9P0TdJ207aIBKQhV2hY=
github.com/knadh/koanf/parsers/toml v0.1.0 h1:S2hLqS4TgWZYj4/7mI5m1CQQcWurxUz6ODgOub/6LCI=
github.com/knadh/koanf/parsers/toml v0.1.0/go.mod h1:yUprhq6eo3GbyVXFFMdbfZSo928ksS+uo0FFqNMnO18=
github.com/knadh/koanf/providers/confmap v0.1.0 h1:gOkxhHkemwG4LezxxN8DMOFopOPghxRVp7JbIvdvqzU=
github.com/knadh/koanf/providers/confmap v0.1.0/go.mod h1:2uLhxQzJnyHKfxG927awZC7+fyHFdQkd697K4MdLnIU=
github.com/knadh/koanf/providers/env/v2 v2.0.0 h1:Ad5H3eun722u+FvchiIcEIJZsZ2M6oxCkgZfWN5B5KY=
github.com/knadh/koanf/providers/env/v2 v2.0.0/go.mod h1:1g01PE+Ve1gBfWNNw2wmULRP0tc8RJrjn5p2N/jNCIc=
github.com/knadh/koanf/providers/file v0.1.0 h1:fs6U7nrV58d3CFAFh8VTde8TM262ObYf3ODrc//Lp+c=
github.com/knadh/koanf/providers/file v0.1.0/go.mod h1:rjJ/nHQl64iYCtAW2QQnF0eSmDEX/YZ/eNFj5yR6BvA=
github.com/knadh/koanf/providers/posflag v0.1.0 h1:mKJlLrKPcAP7Ootf4pBZWJ6J+4wHYujwipe7Ie3qW6U=
@@ -113,8 +114,8 @@ github.com/knadh/smtppool v1.1.0 h1:J7RB3PpNQW/STnJ6JXlNZLfuNsgJu2VILV+CHWnc/j8=
github.com/knadh/smtppool v1.1.0/go.mod h1:3DJHouXAgPDBz0kC50HukOsdapYSwIEfJGwuip46oCA=
github.com/knadh/stuffbin v1.3.0 h1:HaVSuYV+KnrlCHl7DrLNyOCgpTU2K8x5Hb+J4Ck3gww=
github.com/knadh/stuffbin v1.3.0/go.mod h1:yVCFaWaKPubSNibBsTAJ939q2ABHudJQxRWZWV5yh+4=
github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
github.com/lib/pq v1.0.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
@@ -252,8 +253,8 @@ golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=