118 lines
2.2 KiB
Go
118 lines
2.2 KiB
Go
package conf
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import (
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"encoding/json"
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"errors"
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"fmt"
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"github.com/dballard/warren/lib/warren"
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"os"
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)
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type MsgType int
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const (
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AddDeployment MsgType = iota
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RmDeploymen
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)
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type Msg struct {
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mType MsgType
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reply chan error
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args map[string]string
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}
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func NewMsg(mType MsgType, args map[string]string) *Msg {
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var m = &Msg{mType, make(chan error), args}
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return m
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}
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func (m *Msg) Call() error {
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confChan <- *m
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err := <-m.reply
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return err
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}
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// Conf package - thread safe conf
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// All write ops are public API functions
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// that internall use channels to thread safely queue writes
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// all write ops cause FS conf writes so that state is preserved
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// Reads return copies of data
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type Conf struct {
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// name : path
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Deployments map[string]string
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}
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var conf *Conf = nil
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var Init = make(chan bool)
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var confChan = make(chan Msg)
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func loadConf() {
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file, err := os.Open(warren.WarrendConf)
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if err != nil {
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fmt.Println("Error loading ", warren.WarrendConf, ": ", err)
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return
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}
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defer file.Close()
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decoder := json.NewDecoder(file)
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conf = new(Conf)
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err = decoder.Decode(conf)
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if err != nil {
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conf = nil
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fmt.Println("Error parsing ", warren.WarrendConf, ": ", err)
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}
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if conf.Deployments == nil {
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conf.Deployments = make(map[string]string)
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}
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// populate reverse map
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for nick, dir := range conf.Deployments {
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dirToNick[dir] = nick
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}
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}
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func saveConf() error {
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file, err := os.Create(warren.WarrendConf)
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if err != nil {
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// TODO: Um, more than noting we might want to do something more drastic
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return errors.New("Error: could not open conf file for saving: " + err.Error())
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}
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defer file.Close()
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jdata, err := json.MarshalIndent(conf, "", "\t")
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if err != nil {
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return errors.New("Error: Could not enocde to json: " + err.Error())
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}
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if _, err := file.Write(jdata); err != nil {
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return errors.New("Error: Could not write to file: " + err.Error())
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}
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return ni l
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}
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func GetConf() Conf {
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return *conf
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}
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func Run() {
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loadConf()
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if conf == nil {
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fmt.Println("failed to load conf")
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Init <- false
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}
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// set up comm chans
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Init <- true
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// loop for Writes
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for {
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m := <- confChan
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select (m.mType) {
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case dm := <-addDeploymentChan:
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addDeployment(&dm)
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}
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}
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}
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