forked from akash-network/node
/
service.go
300 lines (231 loc) · 6.86 KB
/
service.go
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package cluster
import (
"bytes"
"context"
"errors"
lifecycle "github.com/boz/go-lifecycle"
"github.com/caarlos0/env"
"github.com/ovrclk/akash/provider/event"
"github.com/ovrclk/akash/provider/session"
"github.com/ovrclk/akash/types"
"github.com/tendermint/tendermint/libs/log"
)
var ErrNotRunning = errors.New("not running")
type Cluster interface {
Reserve(types.OrderID, *types.DeploymentGroup) (Reservation, error)
Unreserve(types.OrderID, types.ResourceList) error
}
type StatusClient interface {
Status(context.Context) (*types.ProviderClusterStatus, error)
}
// Manage compute cluster for the provider. Will eventually integrate with kubernetes, etc...
type Service interface {
StatusClient
Cluster
Close() error
Ready() <-chan struct{}
Done() <-chan struct{}
}
func NewService(ctx context.Context, session session.Session, bus event.Bus, client Client) (Service, error) {
log := session.Log().With("module", "provider-cluster", "cmp", "service")
config := config{}
if err := env.Parse(&config); err != nil {
log.Error("parsing config", "err", err)
return nil, err
}
lc := lifecycle.New()
sub, err := bus.Subscribe()
if err != nil {
return nil, err
}
deployments, err := findDeployments(ctx, log, client, session)
if err != nil {
sub.Close()
return nil, err
}
inventory, err := newInventoryService(config, log, lc.ShuttingDown(), sub, client, deployments)
if err != nil {
sub.Close()
return nil, err
}
s := &service{
session: session,
client: client,
bus: bus,
sub: sub,
inventory: inventory,
statusch: make(chan chan<- *types.ProviderClusterStatus),
managers: make(map[string]*deploymentManager),
managerch: make(chan *deploymentManager),
log: log,
lc: lc,
}
go s.lc.WatchContext(ctx)
go s.run(deployments)
return s, nil
}
type service struct {
session session.Session
client Client
bus event.Bus
sub event.Subscriber
inventory *inventoryService
statusch chan chan<- *types.ProviderClusterStatus
managers map[string]*deploymentManager
managerch chan *deploymentManager
log log.Logger
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) Ready() <-chan struct{} {
return s.inventory.ready()
}
func (s *service) Reserve(order types.OrderID, group *types.DeploymentGroup) (Reservation, error) {
return s.inventory.reserve(order, group)
}
func (s *service) Unreserve(order types.OrderID, resources types.ResourceList) error {
_, err := s.inventory.unreserve(order, resources)
return err
}
func (s *service) Status(ctx context.Context) (*types.ProviderClusterStatus, error) {
istatus, err := s.inventory.status(ctx)
if err != nil {
return nil, err
}
ch := make(chan *types.ProviderClusterStatus, 1)
select {
case <-s.lc.Done():
return nil, ErrNotRunning
case <-ctx.Done():
return nil, ctx.Err()
case s.statusch <- ch:
}
select {
case <-s.lc.Done():
return nil, ErrNotRunning
case <-ctx.Done():
return nil, ctx.Err()
case result := <-ch:
result.Inventory = istatus
return result, nil
}
}
func (s *service) run(deployments []Deployment) {
defer s.lc.ShutdownCompleted()
defer s.sub.Close()
for _, deployment := range deployments {
key := deployment.LeaseID().String()
s.managers[key] = newDeploymentManager(s, deployment.LeaseID(), deployment.ManifestGroup())
}
loop:
for {
select {
case err := <-s.lc.ShutdownRequest():
s.lc.ShutdownInitiated(err)
break loop
case ev := <-s.sub.Events():
switch ev := ev.(type) {
case event.ManifestReceived:
s.log.Info("manifest received")
mgroup := ev.ManifestGroup()
if mgroup == nil {
s.log.Error("indeterminate manifest group", "lease", ev.LeaseID, "group-name", ev.Group.Name)
break
}
if _, err := s.inventory.lookup(ev.LeaseID.OrderID(), mgroup); err != nil {
s.log.Error("error looking up manifest", "err", err, "lease", ev.LeaseID, "group-name", mgroup.Name)
break
}
key := ev.LeaseID.String()
if manager := s.managers[key]; manager != nil {
if err := manager.update(mgroup); err != nil {
s.log.Error("updating deployment", "err", err, "lease", ev.LeaseID, "group-name", mgroup.Name)
}
break
}
manager := newDeploymentManager(s, ev.LeaseID, mgroup)
s.managers[key] = manager
case *event.TxCloseDeployment:
// teardown/undeploy managed deployments
for _, manager := range s.managers {
if bytes.Equal(ev.Deployment, manager.lease.OrderID().DeploymentID()) {
s.teardownLease(manager.lease)
}
}
case *event.TxCloseFulfillment:
s.teardownLease(ev.FulfillmentID.LeaseID())
case *event.TxCloseLease:
s.teardownLease(ev.LeaseID)
}
case ch := <-s.statusch:
ch <- &types.ProviderClusterStatus{
Leases: uint32(len(s.managers)),
}
case dm := <-s.managerch:
s.log.Debug("manager done", "lease", dm.lease)
if _, err := s.inventory.unreserve(dm.lease.OrderID(), dm.mgroup); err != nil {
s.log.Error("unreserving inventory", "err", err,
"lease", dm.lease, "group-name", dm.mgroup.Name)
}
// todo: unreserve resources
delete(s.managers, dm.lease.String())
}
}
s.log.Debug("draining deployment managers...")
for _, manager := range s.managers {
if manager != nil {
manager := <-s.managerch
s.log.Debug("manager done", "lease", manager.lease)
}
}
<-s.inventory.done()
}
func (s *service) teardownLease(lid types.LeaseID) {
key := lid.String()
manager := s.managers[key]
if manager == nil {
return
}
if err := manager.teardown(); err != nil {
s.log.Error("tearing down lease deployment", "err", err, "lease", lid)
}
}
func findDeployments(ctx context.Context, log log.Logger, client Client, session session.Session) ([]Deployment, error) {
deployments, err := client.Deployments()
if err != nil {
log.Error("fetching deployments", "err", err)
return nil, err
}
leaseList, err := session.Query().Leases(ctx)
if err != nil {
log.Error("fetching deployments", "err", err)
return nil, err
}
leases := make(map[string]*types.Lease, len(leaseList.Items))
for _, lease := range leaseList.Items {
if !lease.Provider.Equal(session.Provider().Address) {
continue
}
if lease.State != types.Lease_ACTIVE {
continue
}
leases[lease.Path()] = lease
}
log.Info("found leases", "num-active", len(leases), "num-skipped", len(leaseList.Items)-len(leases))
dcount := len(deployments)
for idx, deployment := range deployments {
if _, ok := leases[deployment.LeaseID().Path()]; !ok {
continue
}
deployments = append(deployments[:idx], deployments[idx+1:]...)
log.Debug("deployment", "lease", deployment.LeaseID(), "mgroup", deployment.ManifestGroup().Name)
}
log.Info("found deployments", "num-active", len(deployments), "num-skipped", dcount-len(deployments))
return deployments, nil
}