mirror of
https://github.com/go-micro/go-micro.git
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125 lines
2.2 KiB
Go
125 lines
2.2 KiB
Go
package grpc
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import (
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"github.com/micro/go-micro/v2/client"
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gclient "github.com/micro/go-micro/v2/client/grpc"
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"github.com/micro/go-micro/v2/server"
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gserver "github.com/micro/go-micro/v2/server/grpc"
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"github.com/micro/go-micro/v2/service"
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)
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type grpcService struct {
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opts service.Options
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}
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func newService(opts ...service.Option) service.Service {
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options := service.NewOptions(opts...)
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return &grpcService{
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opts: options,
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}
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}
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func (s *grpcService) Name() string {
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return s.opts.Server.Options().Name
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}
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// Init initialises options. Additionally it calls cmd.Init
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// which parses command line flags. cmd.Init is only called
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// on first Init.
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func (s *grpcService) Init(opts ...service.Option) {
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// process options
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for _, o := range opts {
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o(&s.opts)
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}
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}
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func (s *grpcService) Options() service.Options {
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return s.opts
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}
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func (s *grpcService) Client() client.Client {
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return s.opts.Client
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}
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func (s *grpcService) Server() server.Server {
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return s.opts.Server
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}
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func (s *grpcService) String() string {
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return "grpc"
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}
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func (s *grpcService) Start() error {
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for _, fn := range s.opts.BeforeStart {
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if err := fn(); err != nil {
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return err
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}
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}
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if err := s.opts.Server.Start(); err != nil {
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return err
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}
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for _, fn := range s.opts.AfterStart {
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if err := fn(); err != nil {
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return err
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}
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}
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return nil
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}
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func (s *grpcService) Stop() error {
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var gerr error
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for _, fn := range s.opts.BeforeStop {
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if err := fn(); err != nil {
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gerr = err
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}
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}
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if err := s.opts.Server.Stop(); err != nil {
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return err
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}
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for _, fn := range s.opts.AfterStop {
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if err := fn(); err != nil {
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gerr = err
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}
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}
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return gerr
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}
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func (s *grpcService) Run() error {
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if err := s.Start(); err != nil {
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return err
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}
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// wait on context cancel
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<-s.opts.Context.Done()
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return s.Stop()
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}
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// NewService returns a grpc service compatible with go-micro.Service
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func NewService(opts ...service.Option) service.Service {
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// our grpc client
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c := gclient.NewClient()
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// our grpc server
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s := gserver.NewServer()
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// create options with priority for our opts
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options := []service.Option{
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service.Client(c),
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service.Server(s),
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}
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// append passed in opts
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options = append(options, opts...)
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// generate and return a service
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return newService(options...)
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}
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