// NewCluster is exported
func NewCluster(scheduler *scheduler.Scheduler, TLSConfig *tls.Config, discovery discovery.Backend, options cluster.DriverOpts, engineOptions *cluster.EngineOpts) (cluster.Cluster, error) {
log.WithFields(log.Fields{"name": "swarm"}).Debug("Initializing cluster")
cluster := &Cluster{
eventHandlers: cluster.NewEventHandlers(),
engines: make(map[string]*cluster.Engine),
pendingEngines: make(map[string]*cluster.Engine),
scheduler: scheduler,
TLSConfig: TLSConfig,
discovery: discovery,
pendingContainers: make(map[string]*pendingContainer),
overcommitRatio: 0.05,
engineOpts: engineOptions,
createRetry: 0,
}
if val, ok := options.Float("swarm.overcommit", ""); ok {
cluster.overcommitRatio = val
}
if val, ok := options.Int("swarm.createretry", ""); ok {
if val < 0 {
log.Fatalf("swarm.createretry=%d is invalid", val)
}
cluster.createRetry = val
}
discoveryCh, errCh := cluster.discovery.Watch(nil)
go cluster.monitorDiscovery(discoveryCh, errCh)
go cluster.monitorPendingEngines()
return cluster, nil
}
// NewCluster is exported
func NewCluster(scheduler *scheduler.Scheduler, TLSConfig *tls.Config, discovery discovery.Backend, options cluster.DriverOpts, engineOptions *cluster.EngineOpts) (cluster.Cluster, error) {
log.WithFields(log.Fields{"name": "swarm"}).Debug("Initializing cluster")
cluster := &Cluster{
eventHandlers: cluster.NewEventHandlers(),
engines: make(map[string]*cluster.Engine),
pendingEngines: make(map[string]*cluster.Engine),
scheduler: scheduler,
TLSConfig: TLSConfig,
discovery: discovery,
pendingContainers: make(map[string]*pendingContainer),
overcommitRatio: 0.05,
engineOpts: engineOptions,
createRetry: 0,
}
if val, ok := options.Float("swarm.overcommit", ""); ok {
if val <= float64(-1) {
log.Fatalf("swarm.overcommit should be larger than -1, %f is invalid", val)
} else if val < float64(0) {
log.Warn("-1 < swarm.overcommit < 0 will make swarm take less resource than docker engine offers")
cluster.overcommitRatio = val
} else {
cluster.overcommitRatio = val
}
}
if val, ok := options.Int("swarm.createretry", ""); ok {
if val < 0 {
log.Fatalf("swarm.createretry can not be negative, %d is invalid", val)
}
cluster.createRetry = val
}
discoveryCh, errCh := cluster.discovery.Watch(nil)
go cluster.monitorDiscovery(discoveryCh, errCh)
go cluster.monitorPendingEngines()
return cluster, nil
}