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infrakit: Fix LogicalID handling in HyperKit plugin

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InfraKit may pass an optional LogicalID into an instance. It expects
this LogicalID to be returned via DescribeInstances(). If they don't
match, it assumes something is wrong.

Here, we use the LogicalID passed in (or construct one based on
the internal ID) and stash it in the state directory. It is retrieved
in DescribeInstances().

While at it, also improve logging.

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This commit is contained in:
Rolf Neugebauer
2017-04-05 14:50:37 +01:00
parent a6257844d1
commit ea3bfccf5e
1 changed files with 24 additions and 2 deletions
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26
src/cmd/infrakit-instance-hyperkit/instance.go
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@@ -68,6 +68,13 @@ func (p hyperkitPlugin) Provision(spec instance.Spec) (*instance.ID, error) {
return nil, err
}
id := instance.ID(path.Base(instanceDir))
log.Infof("[%s] New instance", id)
logicalID := string(id)
if spec.LogicalID != nil {
logicalID = string(*spec.LogicalID)
}
log.Infof("[%s] LogicalID: %s", id, logicalID)
// Start a HyperKit instance
h, err := hyperkit.New(p.HyperKit, instanceDir, p.VPNKitSock, "")
@@ -81,17 +88,25 @@ func (p hyperkitPlugin) Provision(spec instance.Spec) (*instance.ID, error) {
h.DiskSize = int(properties["Disk"].(float64))
h.UserData = spec.Init
h.Console = hyperkit.ConsoleFile
log.Infof("[%s] Booting: %s/%s", id, h.Kernel, h.Initrd)
log.Infof("[%s] %d CPUs, %dMB Memory, %dMB Disk", id, h.CPUs, h.Memory, h.DiskSize)
err = h.Start("console=ttyS0")
if err != nil {
return nil, err
}
log.Info("Started new VM: ", id)
log.Infof("[%s] Started", id)
if err := ioutil.WriteFile(path.Join(instanceDir, "logical.id"), []byte(logicalID), 0644); err != nil {
return nil, err
}
tagData, err := types.AnyValue(spec.Tags)
if err != nil {
return nil, err
}
log.Debugf("[%s] tags: %s", id, tagData)
if err := ioutil.WriteFile(path.Join(instanceDir, "tags"), tagData.Bytes(), 0644); err != nil {
return nil, err
}
@@ -206,7 +221,14 @@ func (p hyperkitPlugin) DescribeInstances(tags map[string]string, properties boo
p.Destroy(id)
continue
}
lid := instance.LogicalID(h.Pid)
lidData, err := ioutil.ReadFile(path.Join(instanceDir, "logical.id"))
if err != nil {
log.Warningln("Could not get logical ID. Id: ", id)
p.Destroy(id)
continue
}
lid := instance.LogicalID(lidData)
logicalID = &lid
descriptions = append(descriptions, instance.Description{