// extractFilenames returns the filenames from a "list" operation on the
// MAAS API, sorted by name.
func (stor *maasStorage) extractFilenames(listResult gomaasapi.JSONObject) ([]string, error) {
list, err := listResult.GetArray()
if err != nil {
return nil, err
}
result := make([]string, len(list))
for index, entry := range list {
file, err := entry.GetMap()
if err != nil {
return nil, err
}
filename, err := file["filename"].GetString()
if err != nil {
return nil, err
}
result[index] = filename
}
sort.Strings(result)
return result, nil
}
// extractFilenames returns the filenames from a "list" operation on the
// MAAS API, sorted by name.
func (stor *maasStorage) extractFilenames(listResult gomaasapi.JSONObject) ([]string, error) {
privatePrefix := stor.prefixWithPrivateNamespace("")
list, err := listResult.GetArray()
if err != nil {
return nil, err
}
result := make([]string, len(list))
for index, entry := range list {
file, err := entry.GetMap()
if err != nil {
return nil, err
}
filename, err := file["filename"].GetString()
if err != nil {
return nil, err
}
// When listing files we need to return them without our special prefix.
result[index] = strings.TrimPrefix(filename, privatePrefix)
}
sort.Strings(result)
return result, nil
}
// acquireNode allocates a node from the MAAS.
func (environ *maasEnviron) acquireNode(cons constraints.Value, possibleTools tools.List) (gomaasapi.MAASObject, *state.Tools, error) {
constraintsParams := convertConstraints(cons)
var result gomaasapi.JSONObject
var err error
for a := shortAttempt.Start(); a.Next(); {
client := environ.getMAASClient().GetSubObject("nodes/")
result, err = client.CallPost("acquire", constraintsParams)
if err == nil {
break
}
}
if err != nil {
return gomaasapi.MAASObject{}, nil, err
}
node, err := result.GetMAASObject()
if err != nil {
msg := fmt.Errorf("unexpected result from 'acquire' on MAAS API: %v", err)
return gomaasapi.MAASObject{}, nil, msg
}
tools := possibleTools[0]
logger.Warningf("picked arbitrary tools %q", tools)
return node, tools, nil
}