// Reader from os.Open
func loadConfigContents(reader io.Reader, workingDir string, logger common.Logger) (Config, error) {
log := common.MaskLogger(logger)
log.Printf("Loading config with working dir %v.\n", workingDir)
buf := new(bytes.Buffer)
_, err := buf.ReadFrom(reader)
if err != nil {
return Config{}, errors.Wrap(err, "could not read config")
}
data := buf.Bytes()
var config Config
err = json.Unmarshal(data, &config)
if err != nil {
if syntax, ok := err.(*json.SyntaxError); ok && syntax.Offset != 0 {
start := strings.LastIndex(string(data[:syntax.Offset]), "\n") + 1
line, pos := strings.Count(string(data[:start]), "\n")+1, int(syntax.Offset)-start-1
return Config{}, errors.Wrapf(err, "could not parse config file (line %v, char %v)", line, pos)
}
return Config{}, errors.Wrap(err, "could not parse config file")
}
config.workingDir = workingDir
err = config.loadImports()
if err != nil {
return Config{}, errors.WithStack(err)
}
config.Logger = log
return config, nil
}
func NewConfig(newServices []services.ServiceConfig, newGroups []services.ServiceGroupConfig, logger common.Logger) Config {
log := common.MaskLogger(logger)
log.Printf("Creating new config with %d services and %d groups.\n", len(newServices), len(newGroups))
// Find Env settings common to all services
var allEnvSlices [][]string
for _, s := range newServices {
allEnvSlices = append(allEnvSlices, s.Env)
}
env := stringSliceIntersect(allEnvSlices)
// Remove common settings from services
var svcs []services.ServiceConfig
for _, s := range newServices {
s.Env = stringSliceRemoveCommon(env, s.Env)
svcs = append(svcs, s)
}
cfg := Config{
Env: env,
Services: svcs,
Groups: []GroupDef{},
Logger: log,
}
cfg.AddGroups(newGroups)
log.Printf("Config created: %v", cfg)
return cfg
}
func EmptyConfig(workingDir string, logger common.Logger) Config {
log := common.MaskLogger(logger)
log.Printf("Creating empty config\n")
cfg := Config{
workingDir: workingDir,
Logger: log,
}
cfg.ServiceMap = make(map[string]*services.ServiceConfig)
cfg.GroupMap = make(map[string]*services.ServiceGroupConfig)
return cfg
}