// startBootstrapInstance starts the bootstrap instance for this environment.
func (env *azureEnviron) startBootstrapInstance(cons constraints.Value) (instance.Instance, error) {
// The bootstrap instance gets machine id "0". This is not related to
// instance ids or anything in Azure. Juju assigns the machine ID.
const machineID = "0"
// Create an empty bootstrap state file so we can get its URL.
// It will be updated with the instance id and hardware characteristics
// after the bootstrap instance is started.
stateFileURL, err := environs.CreateStateFile(env.Storage())
if err != nil {
return nil, err
}
machineConfig := environs.NewBootstrapMachineConfig(machineID, stateFileURL)
logger.Debugf("bootstrapping environment %q", env.Name())
possibleTools, err := environs.FindBootstrapTools(env, cons)
if err != nil {
return nil, err
}
inst, err := env.internalStartInstance(cons, possibleTools, machineConfig)
if err != nil {
return nil, fmt.Errorf("cannot start bootstrap instance: %v", err)
}
return inst, nil
}
// TODO(bug 1199847): This work can be shared between providers.
func (e *environ) Bootstrap(cons constraints.Value) error {
// The bootstrap instance gets machine id "0". This is not related
// to instance ids. Juju assigns the machine ID.
const machineID = "0"
log.Infof("environs/openstack: bootstrapping environment %q", e.name)
if err := environs.VerifyBootstrapInit(e, shortAttempt); err != nil {
return err
}
possibleTools, err := environs.FindBootstrapTools(e, cons)
if err != nil {
return err
}
err = environs.CheckToolsSeries(possibleTools, e.Config().DefaultSeries())
if err != nil {
return err
}
// The client's authentication may have been reset by FindBootstrapTools() if the agent-version
// attribute was updated so we need to re-authenticate. This will be a no-op if already authenticated.
// An authenticated client is needed for the URL() call below.
err = e.client.Authenticate()
if err != nil {
return err
}
stateFileURL, err := environs.CreateStateFile(e.Storage())
if err != nil {
return err
}
machineConfig := environs.NewBootstrapMachineConfig(machineID, stateFileURL)
// TODO(wallyworld) - save bootstrap machine metadata
inst, characteristics, err := e.internalStartInstance(cons, possibleTools, machineConfig)
if err != nil {
return fmt.Errorf("cannot start bootstrap instance: %v", err)
}
err = environs.SaveState(e.Storage(), &environs.BootstrapState{
StateInstances: []instance.Id{inst.Id()},
Characteristics: []instance.HardwareCharacteristics{*characteristics},
})
if err != nil {
// ignore error on StopInstance because the previous error is
// more important.
e.StopInstances([]instance.Instance{inst})
return fmt.Errorf("cannot save state: %v", err)
}
// TODO make safe in the case of racing Bootstraps
// If two Bootstraps are called concurrently, there's
// no way to use Swift to make sure that only one succeeds.
// Perhaps consider using SimpleDB for state storage
// which would enable that possibility.
return nil
}
// TODO(bug 1199847): Much of this work can be shared between providers.
func (e *environ) Bootstrap(cons constraints.Value) error {
// The bootstrap instance gets machine id "0". This is not related to
// instance ids. Juju assigns the machine ID.
const machineID = "0"
log.Infof("environs/ec2: bootstrapping environment %q", e.name)
// If the state file exists, it might actually have just been
// removed by Destroy, and eventual consistency has not caught
// up yet, so we retry to verify if that is happening.
if err := environs.VerifyBootstrapInit(e, shortAttempt); err != nil {
return err
}
possibleTools, err := environs.FindBootstrapTools(e, cons)
if err != nil {
return err
}
err = environs.CheckToolsSeries(possibleTools, e.Config().DefaultSeries())
if err != nil {
return err
}
stateFileURL, err := environs.CreateStateFile(e.Storage())
if err != nil {
return err
}
machineConfig := environs.NewBootstrapMachineConfig(machineID, stateFileURL)
// TODO(wallyworld) - save bootstrap machine metadata
inst, characteristics, err := e.internalStartInstance(cons, possibleTools, machineConfig)
if err != nil {
return fmt.Errorf("cannot start bootstrap instance: %v", err)
}
err = environs.SaveState(e.Storage(), &environs.BootstrapState{
StateInstances: []instance.Id{inst.Id()},
Characteristics: []instance.HardwareCharacteristics{*characteristics},
})
if err != nil {
// ignore error on StopInstance because the previous error is
// more important.
e.StopInstances([]instance.Instance{inst})
return fmt.Errorf("cannot save state: %v", err)
}
// TODO make safe in the case of racing Bootstraps
// If two Bootstraps are called concurrently, there's
// no way to use S3 to make sure that only one succeeds.
// Perhaps consider using SimpleDB for state storage
// which would enable that possibility.
return nil
}
func (*StateSuite) TestCreateStateFileWritesEmptyStateFile(c *C) {
storage, cleanup := makeDummyStorage(c)
defer cleanup()
url, err := environs.CreateStateFile(storage)
c.Assert(err, IsNil)
reader, err := storage.Get(environs.StateFile)
c.Assert(err, IsNil)
data, err := ioutil.ReadAll(reader)
c.Assert(err, IsNil)
c.Check(string(data), Equals, "")
c.Assert(url, NotNil)
expectedURL, err := storage.URL(environs.StateFile)
c.Assert(err, IsNil)
c.Check(url, Equals, expectedURL)
}