mirror of https://github.com/docker/docs.git
96 lines
2.4 KiB
Go
96 lines
2.4 KiB
Go
package builtin
|
|
|
|
import (
|
|
"sync"
|
|
|
|
log "github.com/Sirupsen/logrus"
|
|
"github.com/docker/swarm/cluster"
|
|
"github.com/docker/swarm/discovery"
|
|
"github.com/docker/swarm/filter"
|
|
"github.com/docker/swarm/strategy"
|
|
"github.com/samalba/dockerclient"
|
|
)
|
|
|
|
type BuiltinScheduler struct {
|
|
sync.Mutex
|
|
|
|
cluster *cluster.Cluster
|
|
strategy strategy.PlacementStrategy
|
|
filters []filter.Filter
|
|
}
|
|
|
|
func (s *BuiltinScheduler) Initialize(cluster *cluster.Cluster, strategy strategy.PlacementStrategy, filters []filter.Filter) {
|
|
s.cluster = cluster
|
|
s.strategy = strategy
|
|
s.filters = filters
|
|
}
|
|
|
|
// Find a nice home for our container.
|
|
func (s *BuiltinScheduler) selectNodeForContainer(config *dockerclient.ContainerConfig) (*cluster.Node, error) {
|
|
candidates := s.cluster.Nodes()
|
|
|
|
accepted, err := filter.ApplyFilters(s.filters, config, candidates)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return s.strategy.PlaceContainer(config, accepted)
|
|
}
|
|
|
|
// Schedule a brand new container into the cluster.
|
|
func (s *BuiltinScheduler) CreateContainer(config *dockerclient.ContainerConfig, name string) (*cluster.Container, error) {
|
|
|
|
s.Lock()
|
|
defer s.Unlock()
|
|
|
|
node, err := s.selectNodeForContainer(config)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return s.cluster.DeployContainer(node, config, name)
|
|
}
|
|
|
|
// Remove a container from the cluster. Containers should always be destroyed
|
|
// through the scheduler to guarantee atomicity.
|
|
func (s *BuiltinScheduler) RemoveContainer(container *cluster.Container, force bool) error {
|
|
s.Lock()
|
|
defer s.Unlock()
|
|
|
|
return s.cluster.DestroyContainer(container, force)
|
|
}
|
|
|
|
// Entries are Docker Nodes
|
|
func (s *BuiltinScheduler) NewEntries(entries []*discovery.Entry) {
|
|
for _, entry := range entries {
|
|
go func(m *discovery.Entry) {
|
|
if s.cluster.Node(m.String()) == nil {
|
|
n := cluster.NewNode(m.String(), s.cluster.OvercommitRatio)
|
|
if err := n.Connect(s.cluster.TLSConfig); err != nil {
|
|
log.Error(err)
|
|
return
|
|
}
|
|
if err := s.cluster.AddNode(n); err != nil {
|
|
log.Error(err)
|
|
return
|
|
}
|
|
}
|
|
}(entry)
|
|
}
|
|
}
|
|
|
|
func (s *BuiltinScheduler) Events(eventsHandler cluster.EventHandler) {
|
|
s.cluster.Events(eventsHandler)
|
|
}
|
|
|
|
func (s *BuiltinScheduler) Nodes() []*cluster.Node {
|
|
return s.cluster.Nodes()
|
|
}
|
|
|
|
func (s *BuiltinScheduler) Containers() []*cluster.Container {
|
|
return s.cluster.Containers()
|
|
}
|
|
|
|
func (s *BuiltinScheduler) Container(IdOrName string) *cluster.Container {
|
|
return s.cluster.Container(IdOrName)
|
|
}
|