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|
package proto
import (
"fmt"
"strings"
"github.com/go-faster/errors"
)
// ServerHello is answer to ClientHello and represents ServerCodeHello message.
type ServerHello struct {
Name string
Major int
Minor int
Revision int
Timezone string
DisplayName string
Patch int
}
// Features implemented by server.
func (s ServerHello) Features() []Feature {
var features []Feature
for _, f := range FeatureValues() {
if s.Has(f) {
features = append(features, f)
}
}
return features
}
// Has reports whether Feature is implemented.
func (s ServerHello) Has(f Feature) bool {
return f.In(s.Revision)
}
func (s ServerHello) String() string {
var b strings.Builder
b.WriteString(s.Name)
if s.DisplayName != "" {
_, _ = fmt.Fprintf(&b, " (%s", s.DisplayName)
if s.Timezone != "" {
b.WriteString(", ")
b.WriteString(s.Timezone)
}
b.WriteRune(')')
}
_, _ = fmt.Fprintf(&b, " %d.%d", s.Major, s.Minor)
if s.Has(FeatureVersionPatch) {
_, _ = fmt.Fprintf(&b, ".%d", s.Patch)
}
_, _ = fmt.Fprintf(&b, " (%d)", s.Revision)
return b.String()
}
// DecodeAware decodes ServerHello message from Reader.
func (s *ServerHello) DecodeAware(r *Reader, v int) error {
name, err := r.Str()
if err != nil {
return errors.Wrap(err, "str")
}
s.Name = name
major, err := r.Int()
if err != nil {
return errors.Wrap(err, "major")
}
minor, err := r.Int()
if err != nil {
return errors.Wrap(err, "minor")
}
revision, err := r.Int()
if err != nil {
return errors.Wrap(err, "revision")
}
s.Major, s.Minor, s.Revision = major, minor, revision
if FeatureTimezone.In(v) {
v, err := r.Str()
if err != nil {
return errors.Wrap(err, "timezone")
}
s.Timezone = v
}
if FeatureDisplayName.In(v) {
v, err := r.Str()
if err != nil {
return errors.Wrap(err, "display name")
}
s.DisplayName = v
}
if FeatureVersionPatch.In(v) {
path, err := r.Int()
if err != nil {
return errors.Wrap(err, "patch")
}
s.Patch = path
}
return nil
}
func (s *ServerHello) EncodeAware(b *Buffer, v int) {
ServerCodeHello.Encode(b)
b.PutString(s.Name)
b.PutInt(s.Major)
b.PutInt(s.Minor)
b.PutInt(s.Revision)
if FeatureTimezone.In(v) {
b.PutString(s.Timezone)
}
if FeatureDisplayName.In(v) {
b.PutString(s.DisplayName)
}
if FeatureVersionPatch.In(v) {
b.PutInt(s.Patch)
}
}
|
