cfg

Quikstart

Read local config file as Inifile

• Create config file ./app.ini

[db]
host=127.0.0.1:3306
user=yaitoo
passwd=amazing
database=sparrow

• Open and convert config to Inifile

import (
    "fmt"
    "context"
    "github.com/yaitoo/sparrow/cfg"
)

c := cfg.Open(context.TODO(), "./app.ini").ToInifile(context.TODO())

host := c.Section("db").Value("host","")
user := c.Section("db").Value("user","")

• Enable HotReload feature

c := cfg.Open(context.TODO(), "./app.ini")
inifile := c.ToInifile(context.TODO())
c.OnChanged(func(c *cfg.Config){
    inifile.TryParse(c.Content)
})

• Works with other config formats. eg toml,yaml...

import "github.com/BurntSushi/toml"

c := cfg.Open(context.TODO(), "./app.ini")

var conf Config
if _, err := toml.Decode(c.Content), &conf); err != nil {
  // handle error
}

//Enable hot-reload feature
c.OnChanged(func(c *cfg.Config){
    if _, err := toml.Decode(c.Content, &conf); err != nil {
  // handle error
    }
})

Read remote config content as Inifile

• Implement a custom Reader to read remote content via http/tcp...

type RemoteReader struct {
    Name string
}

func NewReader(name string) *RemoteReader {
    return &RemoteReader{name:name}
}

//Read implement `Reader.Read`
func (r *RemoteReader) Read(ctx context.Context) (string, error) {

   return ReadBytesFromRemote(r.name)
}

//ModTime implement `Reader.ModTime`
func (r *RemoteReader) ModTime(ctx context.Context) (int64, error) {

	return ReadLatestModTimeFromRemote(r.name)
}

• Open config with RemoteReader from remote store(eg. redis,mysql)

 c := cfg.Open(context.TODO(),"cmdb.apis", cfg.WithReader(func(ctx context.Context) cfg.Reader {
		return NewReader("cmdb.apis")
  })).ToInifile(context.TODO())


host := c.Section("db").Value("host","")
user := c.Section("db").Value("user","")