mirror of https://github.com/hashicorp/consul
70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
package version
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"fmt"
|
|
)
|
|
|
|
const (
|
|
PrettyFormat string = "pretty"
|
|
JSONFormat string = "json"
|
|
)
|
|
|
|
type Formatter interface {
|
|
Format(info *VersionInfo) (string, error)
|
|
}
|
|
|
|
func GetSupportedFormats() []string {
|
|
return []string{PrettyFormat, JSONFormat}
|
|
}
|
|
|
|
func NewFormatter(format string) (Formatter, error) {
|
|
switch format {
|
|
case PrettyFormat:
|
|
return newPrettyFormatter(), nil
|
|
case JSONFormat:
|
|
return newJSONFormatter(), nil
|
|
default:
|
|
return nil, fmt.Errorf("Unknown format: %s", format)
|
|
}
|
|
}
|
|
|
|
type prettyFormatter struct{}
|
|
|
|
func newPrettyFormatter() Formatter {
|
|
return &prettyFormatter{}
|
|
}
|
|
|
|
func (_ *prettyFormatter) Format(info *VersionInfo) (string, error) {
|
|
var buffer bytes.Buffer
|
|
buffer.WriteString(fmt.Sprintf("Consul %s\n", info.HumanVersion))
|
|
if info.Revision != "" {
|
|
buffer.WriteString(fmt.Sprintf("Revision %s\n", info.Revision))
|
|
}
|
|
|
|
var supplement string
|
|
if info.RPC.Default < info.RPC.Max {
|
|
supplement = fmt.Sprintf(" (agent will automatically use protocol >%d when speaking to compatible agents)",
|
|
info.RPC.Default)
|
|
}
|
|
buffer.WriteString(fmt.Sprintf("Protocol %d spoken by default, understands %d to %d%s\n",
|
|
info.RPC.Default, info.RPC.Min, info.RPC.Max, supplement))
|
|
|
|
return buffer.String(), nil
|
|
}
|
|
|
|
type jsonFormatter struct{}
|
|
|
|
func newJSONFormatter() Formatter {
|
|
return &jsonFormatter{}
|
|
}
|
|
|
|
func (_ *jsonFormatter) Format(info *VersionInfo) (string, error) {
|
|
b, err := json.MarshalIndent(info, "", " ")
|
|
if err != nil {
|
|
return "", fmt.Errorf("Failed to marshal version info: %v", err)
|
|
}
|
|
return string(b), nil
|
|
}
|