// Decodes and evaluates a json config file, watching for include cycles.
func (c *ConfigParser) recursiveReadJSON(configPath string) (decodedObject map[string]interface{}, err error) {
if configPath != "" {
absConfigPath, err := filepath.Abs(configPath)
if err != nil {
return nil, fmt.Errorf("Failed to expand absolute path for %s", configPath)
}
if c.touchedFiles[absConfigPath] {
return nil, fmt.Errorf("ConfigParser include cycle detected reading config: %v",
absConfigPath)
}
c.touchedFiles[absConfigPath] = true
c.includeStack.Push(absConfigPath)
defer c.includeStack.Pop()
}
var f File
if f, err = c.open(configPath); err != nil {
return nil, fmt.Errorf("Failed to open config: %v", err)
}
defer f.Close()
decodedObject = make(map[string]interface{})
dj := json.NewDecoder(f)
if err = dj.Decode(&decodedObject); err != nil {
extra := ""
if serr, ok := err.(*json.SyntaxError); ok {
if _, serr := f.Seek(0, os.SEEK_SET); serr != nil {
log.Fatalf("seek error: %v", serr)
}
line, col, highlight := errorutil.HighlightBytePosition(f, serr.Offset)
extra = fmt.Sprintf(":\nError at line %d, column %d (file offset %d):\n%s",
line, col, serr.Offset, highlight)
}
return nil, fmt.Errorf("error parsing JSON object in config file %s%s\n%v",
f.Name(), extra, err)
}
if err = c.evaluateExpressions(decodedObject, nil, false); err != nil {
return nil, fmt.Errorf("error expanding JSON config expressions in %s:\n%v",
f.Name(), err)
}
return decodedObject, nil
}
func readZoneFile(zoneName, fileName string) (zone *Zone, zerr error) {
defer func() {
if r := recover(); r != nil {
log.Printf("reading %s failed: %s", zoneName, r)
debug.PrintStack()
zerr = fmt.Errorf("reading %s failed: %s", zoneName, r)
}
}()
fh, err := os.Open(fileName)
if err != nil {
log.Printf("Could not read '%s': %s", fileName, err)
panic(err)
}
zone = NewZone(zoneName)
fileInfo, err := fh.Stat()
if err != nil {
log.Printf("Could not stat '%s': %s", fileName, err)
} else {
zone.Options.Serial = int(fileInfo.ModTime().Unix())
}
var objmap map[string]interface{}
decoder := json.NewDecoder(fh)
if err = decoder.Decode(&objmap); err != nil {
extra := ""
if serr, ok := err.(*json.SyntaxError); ok {
if _, serr := fh.Seek(0, os.SEEK_SET); serr != nil {
log.Fatalf("seek error: %v", serr)
}
line, col, highlight := errorutil.HighlightBytePosition(fh, serr.Offset)
extra = fmt.Sprintf(":\nError at line %d, column %d (file offset %d):\n%s",
line, col, serr.Offset, highlight)
}
return nil, fmt.Errorf("error parsing JSON object in config file %s%s\n%v",
fh.Name(), extra, err)
}
if err != nil {
panic(err)
}
//log.Println(objmap)
var data map[string]interface{}
for k, v := range objmap {
//log.Printf("k: %s v: %#v, T: %T\n", k, v, v)
switch k {
case "ttl", "serial", "max_hosts", "contact":
switch option := k; option {
case "ttl":
zone.Options.Ttl = valueToInt(v)
case "serial":
zone.Options.Serial = valueToInt(v)
case "contact":
zone.Options.Contact = v.(string)
case "max_hosts":
zone.Options.MaxHosts = valueToInt(v)
case "targeting":
zone.Options.Targeting, err = parseTargets(v.(string))
if err != nil {
log.Printf("Could not parse targeting '%s': %s", v, err)
return nil, err
}
}
case "logging":
{
logging := new(ZoneLogging)
for logger, v := range v.(map[string]interface{}) {
switch logger {
case "stathat":
logging.StatHat = valueToBool(v)
case "stathat_api":
logging.StatHatAPI = valueToString(v)
logging.StatHat = true
default:
log.Println("Unknown logger option", logger)
}
}
zone.Logging = logging
// log.Printf("logging options: %#v", logging)
}
continue
case "data":
data = v.(map[string]interface{})
}
}
setupZoneData(data, zone)
//log.Printf("ZO T: %T %s\n", Zones["0.us"], Zones["0.us"])
//log.Println("IP", string(Zone.Regions["0.us"].IPv4[0].ip))
switch {
case zone.Options.Targeting >= TargetRegionGroup:
geoIP.setupGeoIPCity()
case zone.Options.Targeting >= TargetContinent:
geoIP.setupGeoIPCountry()
}
return zone, nil
}
