// toDBMachine converts machines specified in the Stitch into db.Machines that can
// be compared against what's already in the db.
// Specifically, it sets the role of the db.Machine, the size (which may depend
// on RAM and CPU constraints), and the provider.
// Additionally, it skips machines with invalid roles, sizes or providers.
func toDBMachine(machines []stitch.Machine, maxPrice float64) []db.Machine {
var hasMaster, hasWorker bool
var dbMachines []db.Machine
for _, stitchm := range machines {
var m db.Machine
role, err := db.ParseRole(stitchm.Role)
if err != nil {
log.WithError(err).Error("Error parsing role.")
continue
}
m.Role = role
hasMaster = hasMaster || role == db.Master
hasWorker = hasWorker || role == db.Worker
p, err := db.ParseProvider(stitchm.Provider)
if err != nil {
log.WithError(err).Error("Error parsing provider.")
continue
}
m.Provider = p
m.Size = stitchm.Size
if m.Size == "" {
providerInst := provider.New(p)
m.Size = providerInst.ChooseSize(
stitchm.RAM, stitchm.CPU, maxPrice)
if m.Size == "" {
log.Errorf("No valid size for %v, skipping.", m)
continue
}
}
m.DiskSize = stitchm.DiskSize
if m.DiskSize == 0 {
m.DiskSize = defaultDiskSize
}
m.SSHKeys = stitchm.SSHKeys
m.Region = stitchm.Region
dbMachines = append(dbMachines, provider.DefaultRegion(m))
}
if !hasMaster && hasWorker {
log.Warning("A Master was specified but no workers.")
return nil
} else if hasMaster && !hasWorker {
log.Warning("A Worker was specified but no masters.")
return nil
}
return dbMachines
}
func newCluster(conn db.Conn, namespace string) *cluster {
clst := &cluster{
conn: conn,
trigger: conn.TriggerTick(30, db.ClusterTable, db.MachineTable),
fm: createForeman(conn),
namespace: namespace,
providers: make(map[db.Provider]provider.Provider),
}
for _, p := range allProviders {
inst := provider.New(p)
if err := inst.Connect(namespace); err == nil {
clst.providers[p] = inst
} else {
log.Debugf("Failed to connect to provider %s: %s", p, err)
}
}
return clst
}