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init.go
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init.go
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// Copyright 2021 rex lv
//
// 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 conf
import (
"log"
"github.com/BurntSushi/toml"
"github.com/douyu/jupiter/pkg/core/hooks"
"github.com/douyu/jupiter/pkg/flag"
)
const DefaultEnvPrefix = "APP_"
func init() {
flag.Register(&flag.StringFlag{Name: "envPrefix", Usage: "--envPrefix=APP_", Default: DefaultEnvPrefix, Action: func(key string, fs *flag.FlagSet) {
var envPrefix = fs.String(key)
defaultConfiguration.LoadEnvironments(envPrefix)
}})
flag.Register(&flag.StringFlag{Name: "config", Usage: "--config=config.toml", Action: func(key string, fs *flag.FlagSet) {
hooks.Do(hooks.Stage_BeforeLoadConfig)
var configAddr = fs.String(key)
log.Printf("read config: %s", configAddr)
datasource, err := NewDataSource(configAddr)
if err != nil {
log.Fatalf("build datasource[%s] failed: %v", configAddr, err)
}
if err := LoadFromDataSource(datasource, toml.Unmarshal); err != nil {
log.Fatalf("load config from datasource[%s] failed: %v", configAddr, err)
}
log.Printf("load config from datasource[%s] completely!", configAddr)
hooks.Do(hooks.Stage_AfterLoadConfig)
}})
flag.Register(&flag.StringFlag{Name: "config-tag", Usage: "--config-tag=mapstructure", Default: "mapstructure", Action: func(key string, fs *flag.FlagSet) {
defaultGetOptions.TagName = fs.String("config-tag")
}})
flag.Register(&flag.StringFlag{Name: "config-namespace", Usage: "--config-namespace=jupiter, 配置内建组件的默认命名空间, 默认是jupiter", Default: "jupiter", Action: func(key string, fs *flag.FlagSet) {
defaultGetOptions.Namespace = fs.String("config-namespace")
}})
flag.Register(&flag.BoolFlag{Name: "watch", Usage: "--watch, watch config change event", Default: false, EnvVar: "JUPITER_CONFIG_WATCH", Action: func(key string, fs *flag.FlagSet) {
log.Printf("load config watch: %v", fs.Bool(key))
}})
}