/
registerService.go
91 lines (77 loc) · 2.23 KB
/
registerService.go
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/*
* Copyright (c) 2022 Michaël COLL.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package service
import (
"fmt"
"strings"
"time"
"github.com/fatih/color"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"github.com/michaelcoll/gallery-daemon/internal/photo/domain/model"
"github.com/google/uuid"
)
type RegisterService struct {
c RegisterCaller
param model.ServeParameters
daemonId uuid.UUID
expIn uint32
connectionUp bool
hasConnected bool
canConnect bool
}
func NewRegisterService(c RegisterCaller, param model.ServeParameters) RegisterService {
return RegisterService{c: c, param: param}
}
func (s *RegisterService) Register() {
for {
if !s.hasConnected {
response, err := s.c.Register()
if err != nil {
s.connectionProblem(err)
s.expIn = 5
} else {
s.daemonId = response.Id
s.expIn = response.ExpIn
s.hasConnected = true
s.connectionUp = true
fmt.Printf("%s Daemon registered.\n", color.GreenString("✓"))
}
}
time.Sleep(time.Duration(s.expIn) * time.Second)
err := s.c.HeartBeat(s.daemonId)
if err != nil {
s.connectionProblem(err)
}
}
}
func (s *RegisterService) connectionProblem(err error) {
st, _ := status.FromError(err)
if s.connectionUp && s.hasConnected && st.Code() != codes.NotFound {
fmt.Printf("%s Connection lost : %s\n", color.RedString("✗"), getErrorMessage(err))
s.connectionUp = false
}
if !s.hasConnected && !s.connectionUp && !s.canConnect {
fmt.Printf("%s Can't connect : %s\n", color.RedString("✗"), getErrorMessage(err))
s.canConnect = true
}
}
func getErrorMessage(err error) string {
if strings.Contains(err.Error(), "connection refused") {
return "connection refused"
}
return err.Error()
}