forked from akash-network/node
/
service.go
156 lines (129 loc) · 3.2 KB
/
service.go
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package provider
import (
"context"
"fmt"
"time"
lifecycle "github.com/boz/go-lifecycle"
"github.com/caarlos0/env"
"github.com/ovrclk/akash/provider/bidengine"
"github.com/ovrclk/akash/provider/cluster"
"github.com/ovrclk/akash/provider/event"
"github.com/ovrclk/akash/provider/manifest"
"github.com/ovrclk/akash/provider/session"
"github.com/ovrclk/akash/types"
)
type Service interface {
ManifestHandler() manifest.Handler
Close() error
Done() <-chan struct{}
StatusClient
}
type StatusClient interface {
Status(context.Context) (*types.ProviderStatus, error)
}
// Simple wrapper around various services needed for running a provider.
func NewService(ctx context.Context, session session.Session, bus event.Bus, cclient cluster.Client) (Service, error) {
config := config{}
if err := env.Parse(&config); err != nil {
return nil, err
}
ctx, cancel := context.WithCancel(ctx)
session = session.ForModule("provider-service")
cluster, err := cluster.NewService(ctx, session, bus, cclient)
if err != nil {
cancel()
return nil, err
}
select {
case <-cluster.Ready():
case <-time.After(config.ClusterWaitReadyDuration):
session.Log().Error("timeout waiting for cluster ready")
cancel()
<-cluster.Done()
return nil, fmt.Errorf("timeout waiting for cluster ready")
}
bidengine, err := bidengine.NewService(ctx, session, cluster, bus)
if err != nil {
session.Log().Error("creating bidengine service", "err", err)
cancel()
<-cluster.Done()
return nil, err
}
manifest, err := manifest.NewHandler(ctx, session, bus)
if err != nil {
session.Log().Error("creating manifest handler", "err", err)
cancel()
<-cluster.Done()
<-bidengine.Done()
return nil, err
}
service := &service{
session: session,
bus: bus,
cluster: cluster,
bidengine: bidengine,
manifest: manifest,
ctx: ctx,
cancel: cancel,
lc: lifecycle.New(),
}
go service.lc.WatchContext(ctx)
go service.run()
return service, nil
}
type service struct {
session session.Session
bus event.Bus
cluster cluster.Service
bidengine bidengine.Service
manifest manifest.Service
ctx context.Context
cancel context.CancelFunc
lc lifecycle.Lifecycle
}
func (s *service) Close() error {
s.lc.Shutdown(nil)
return s.lc.Error()
}
func (s *service) Done() <-chan struct{} {
return s.lc.Done()
}
func (s *service) ManifestHandler() manifest.Handler {
return s.manifest
}
func (s *service) Status(ctx context.Context) (*types.ProviderStatus, error) {
cluster, err := s.cluster.Status(ctx)
if err != nil {
return nil, err
}
bidengine, err := s.bidengine.Status(ctx)
if err != nil {
return nil, err
}
manifest, err := s.manifest.Status(ctx)
if err != nil {
return nil, err
}
return &types.ProviderStatus{
Cluster: cluster,
Bidengine: bidengine,
Manifest: manifest,
}, nil
}
func (s *service) run() {
defer s.lc.ShutdownCompleted()
// Wait for any service to finish
select {
case <-s.lc.ShutdownRequest():
case <-s.cluster.Done():
case <-s.bidengine.Done():
case <-s.manifest.Done():
}
// Shut down all services
s.lc.ShutdownInitiated(nil)
s.cancel()
// Wait for all services to finish
<-s.cluster.Done()
<-s.bidengine.Done()
<-s.manifest.Done()
}