435c0d9fc8
This PR switches the Nomad repository from using govendor to Go modules for managing dependencies. Aspects of the Nomad workflow remain pretty much the same. The usual Makefile targets should continue to work as they always did. The API submodule simply defers to the parent Nomad version on the repository, keeping the semantics of API versioning that currently exists.
103 lines
2 KiB
Go
103 lines
2 KiB
Go
package godo
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import (
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"bytes"
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"fmt"
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"io"
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"reflect"
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"strings"
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)
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var timestampType = reflect.TypeOf(Timestamp{})
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type ResourceWithURN interface {
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URN() string
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}
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// ToURN converts the resource type and ID to a valid DO API URN.
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func ToURN(resourceType string, id interface{}) string {
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return fmt.Sprintf("%s:%s:%v", "do", strings.ToLower(resourceType), id)
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}
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// Stringify attempts to create a string representation of DigitalOcean types
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func Stringify(message interface{}) string {
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var buf bytes.Buffer
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v := reflect.ValueOf(message)
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stringifyValue(&buf, v)
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return buf.String()
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}
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// stringifyValue was graciously cargoculted from the goprotubuf library
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func stringifyValue(w io.Writer, val reflect.Value) {
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if val.Kind() == reflect.Ptr && val.IsNil() {
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_, _ = w.Write([]byte("<nil>"))
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return
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}
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v := reflect.Indirect(val)
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switch v.Kind() {
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case reflect.String:
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fmt.Fprintf(w, `"%s"`, v)
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case reflect.Slice:
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stringifySlice(w, v)
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return
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case reflect.Struct:
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stringifyStruct(w, v)
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default:
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if v.CanInterface() {
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fmt.Fprint(w, v.Interface())
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}
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}
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}
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func stringifySlice(w io.Writer, v reflect.Value) {
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_, _ = w.Write([]byte{'['})
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for i := 0; i < v.Len(); i++ {
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if i > 0 {
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_, _ = w.Write([]byte{' '})
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}
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stringifyValue(w, v.Index(i))
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}
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_, _ = w.Write([]byte{']'})
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}
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func stringifyStruct(w io.Writer, v reflect.Value) {
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if v.Type().Name() != "" {
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_, _ = w.Write([]byte(v.Type().String()))
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}
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// special handling of Timestamp values
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if v.Type() == timestampType {
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fmt.Fprintf(w, "{%s}", v.Interface())
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return
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}
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_, _ = w.Write([]byte{'{'})
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var sep bool
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for i := 0; i < v.NumField(); i++ {
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fv := v.Field(i)
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if fv.Kind() == reflect.Ptr && fv.IsNil() {
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continue
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}
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if fv.Kind() == reflect.Slice && fv.IsNil() {
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continue
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}
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if sep {
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_, _ = w.Write([]byte(", "))
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} else {
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sep = true
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}
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_, _ = w.Write([]byte(v.Type().Field(i).Name))
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_, _ = w.Write([]byte{':'})
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stringifyValue(w, fv)
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}
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_, _ = w.Write([]byte{'}'})
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}
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