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// Copyright 2015 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package cloudsigma
import (
"github.com/juju/errors"
"github.com/juju/juju/constraints"
"github.com/juju/juju/environs/imagemetadata"
"github.com/juju/juju/environs/simplestreams"
"github.com/juju/juju/provider/common"
)
func (env *environ) SupportedArchitectures() ([]string, error) {
env.archMutex.Lock()
defer env.archMutex.Unlock()
if env.supportedArchitectures != nil {
return env.supportedArchitectures, nil
}
logger.Debugf("Getting supported architectures from simplestream.")
cloudSpec, err := env.Region()
if err != nil {
return nil, err
}
imageConstraint := imagemetadata.NewImageConstraint(simplestreams.LookupParams{
CloudSpec: cloudSpec,
Stream: env.Config().ImageStream(),
})
env.supportedArchitectures, err = common.SupportedArchitectures(env, imageConstraint)
logger.Debugf("Supported architectures: %v", env.supportedArchitectures)
return env.supportedArchitectures, err
}
var unsupportedConstraints = []string{
constraints.Container,
constraints.InstanceType,
constraints.Tags,
}
// ConstraintsValidator returns a Validator instance which
// is used to validate and merge constraints.
func (env *environ) ConstraintsValidator() (constraints.Validator, error) {
validator := constraints.NewValidator()
validator.RegisterUnsupported(unsupportedConstraints)
supportedArches, err := env.SupportedArchitectures()
if err != nil {
return nil, err
}
validator.RegisterVocabulary(constraints.Arch, supportedArches)
return validator, nil
}
// SupportNetworks returns whether the environment has support to
// specify networks for services and machines.
func (env *environ) SupportNetworks() bool {
return false
}
// SupportsUnitAssignment returns an error which, if non-nil, indicates
// that the environment does not support unit placement. If the environment
// does not support unit placement, then machines may not be created
// without units, and units cannot be placed explcitly.
func (env *environ) SupportsUnitPlacement() error {
return errors.NotImplementedf("SupportsUnitPlacement")
}
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