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service.go
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service.go
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package service
import (
"encoding/json"
"sort"
"strings"
"docker.io/go-docker/api/types"
"docker.io/go-docker/api/types/filters"
"github.com/appcelerator/amp/data/accounts"
"github.com/appcelerator/amp/data/stacks"
"github.com/appcelerator/amp/pkg/docker"
"github.com/golang/protobuf/ptypes/empty"
log "github.com/sirupsen/logrus"
"golang.org/x/net/context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
// Server is used to implement ServiceServer
type Server struct {
Accounts accounts.Interface
Docker *docker.Docker
Stacks stacks.Interface
}
// Service constants
const (
RoleLabel = "io.amp.role"
LatestTag = "latest"
GlobalMode = "global"
ReplicatedMode = "replicated"
StackNameLabelName = "com.docker.stack.namespace"
)
// Ps implements service.Ps
func (s *Server) ServicePs(ctx context.Context, in *PsRequest) (*PsReply, error) {
log.Infoln("[service] PsService", in.Service)
args := filters.NewArgs()
args.Add("service", in.Service)
tasks, err := s.Docker.TaskList(ctx, types.TaskListOptions{Filters: args})
if err != nil {
return nil, status.Errorf(codes.Internal, "%v", err)
}
// Sort tasks by slot, then by most recent
sort.Stable(docker.TasksBySlot(tasks))
taskList := &PsReply{}
for _, task := range tasks {
task := &Task{
Id: task.ID,
Image: strings.Split(task.Spec.ContainerSpec.Image, "@")[0],
CurrentState: strings.ToUpper(string(task.Status.State)),
DesiredState: strings.ToUpper(string(task.DesiredState)),
NodeId: task.NodeID,
Error: task.Status.Err,
Slot: int32(task.Slot),
}
taskList.Tasks = append(taskList.Tasks, task)
}
return taskList, nil
}
// List implements service.List
func (s *Server) ServiceList(ctx context.Context, in *ListRequest) (*ListReply, error) {
log.Infoln("[service] List ", in.Stack)
serviceList, err := s.Docker.ServicesList(ctx, types.ServiceListOptions{})
if err != nil {
return nil, status.Errorf(codes.Internal, "%v", err)
}
reply := &ListReply{}
for _, service := range serviceList {
if _, ok := service.Spec.Labels[RoleLabel]; ok {
continue // ignore amp infrastructure services
}
stackName := service.Spec.Labels[StackNameLabelName]
if in.Stack != "" && stackName != in.Stack {
continue // filter based on provided stack name
}
entry := &ServiceEntry{
Id: service.ID,
Name: service.Spec.Name,
}
image := service.Spec.TaskTemplate.ContainerSpec.Image
if strings.Contains(image, "@") {
image = strings.Split(image, "@")[0] // trimming the hash
}
entry.Image = image
entry.Tag = LatestTag
if strings.Contains(image, ":") {
index := strings.LastIndex(image, ":")
entry.Image = image[:index]
entry.Tag = image[index+1:]
}
entry.Mode = ReplicatedMode
if service.Spec.Mode.Global != nil {
entry.Mode = GlobalMode
}
status, err := s.Docker.ServiceStatus(ctx, &service)
if err != nil {
return nil, err
}
entry.RunningTasks = status.RunningTasks
entry.TotalTasks = status.TotalTasks
entry.Status = status.Status
reply.Entries = append(reply.Entries, entry)
}
return reply, nil
}
// Inspect inspects a service
func (s *Server) ServiceInspect(ctx context.Context, in *InspectRequest) (*InspectReply, error) {
log.Infoln("[service] Inspect", in.Service)
serviceEntity, err := s.Docker.ServiceInspect(ctx, in.Service)
if err != nil {
return nil, status.Errorf(codes.Internal, "%v", err)
}
entity, _ := json.MarshalIndent(serviceEntity, "", " ")
return &InspectReply{Json: string(entity)}, nil
}
// Scale scales a service
func (s *Server) ServiceScale(ctx context.Context, in *ScaleRequest) (*empty.Empty, error) {
log.Infoln("[service] Scale", in.Service)
serviceEntity, err := s.Docker.ServiceInspect(ctx, in.Service)
if err != nil {
return nil, status.Errorf(codes.Internal, "%v", err)
}
stackName := serviceEntity.Spec.Labels[StackNameLabelName]
stack, dockerErr := s.Stacks.GetByFragmentOrName(ctx, stackName)
if dockerErr != nil {
return nil, status.Errorf(codes.Internal, "%v", err)
}
if stack == nil {
return nil, stacks.NotFound
}
// Check authorization
if !s.Accounts.IsAuthorized(ctx, stack.Owner, accounts.UpdateAction, accounts.StackRN, stack.Id) {
return nil, status.Errorf(codes.PermissionDenied, "user not authorized")
}
if err := s.Docker.ServiceScale(ctx, in.Service, in.Replicas); err != nil {
return nil, status.Errorf(codes.Internal, "%v", err)
}
return &empty.Empty{}, nil
}