func (compositeSource *CompositeSource) Get() (map[string]interface{}, error) {
resultEnv := make(map[string]interface{})
_, err := From(compositeSource.Sources).
Select(func(rawSource T) (T, error) {
loader, err := GetSource(rawSource.(map[string]interface{}))
if err != nil {
return nil, fmt.Errorf("Failed to parse source: %s", err)
}
return loader, nil
}).
// Resolve in parallel because some sources might use IO and will take some time
AsParallel().AsOrdered().
Select(func(loader T) (T, error) {
result, err := loader.(Source).Get()
if err != nil {
return nil, fmt.Errorf("Failed to resolve source: %s", err)
}
return result, nil
}).
AsSequential().
CountBy(func(partialConfig T) (bool, error) {
for key, value := range flatmap.Flatten(partialConfig.(map[string]interface{})) {
resultEnv[key] = value
}
return true, nil
})
return resultEnv, err
}
func main() {
defer func() {
if r := recover(); r != nil {
os.Stderr.WriteString(fmt.Sprintln(r))
os.Exit(1)
}
}()
if len(os.Args) < 2 {
panic("the required argument `command` was not provided\n")
}
command := strings.Join(os.Args[1:], " ")
sources := getSources()
configs := getConfigs(sources)
sourceKeys := make([]int, 0, len(configs))
for key := range configs {
sourceKeys = append(sourceKeys, key)
}
sort.Ints(sourceKeys)
for _, sourceKey := range sourceKeys {
result := configs[sourceKey]
if result.err != nil {
panic(result.err)
}
partialConfig := flatmap.Flatten(result.config)
for key, value := range partialConfig {
os.Setenv(key, fmt.Sprintf("%v", value))
}
}
envVars := GetEnvironmentVariables()
for key, value := range envVars {
if strings.HasPrefix(value, configoPrefix) {
tmpl, err := template.New(key).Parse(strings.TrimPrefix(value, configoPrefix))
if err != nil {
panic(err)
}
var buffer bytes.Buffer
tmpl.Execute(&buffer, envVars)
os.Setenv(key, buffer.String())
}
}
execute(command)
}