github.com/mhilton/juju-juju@v0.0.0-20150901100907-a94dd2c73455/storage/provider/common.go (about)

     1  // Copyright 2015 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package provider
     5  
     6  import (
     7  	"github.com/juju/errors"
     8  
     9  	"github.com/juju/juju/storage"
    10  )
    11  
    12  var errNoMountPoint = errors.New("filesystem mount point not specified")
    13  
    14  // CommonProviders returns the storage providers used by all environments.
    15  func CommonProviders() map[storage.ProviderType]storage.Provider {
    16  	return map[storage.ProviderType]storage.Provider{
    17  		LoopProviderType:   &loopProvider{logAndExec},
    18  		RootfsProviderType: &rootfsProvider{logAndExec},
    19  		TmpfsProviderType:  &tmpfsProvider{logAndExec},
    20  	}
    21  }
    22  
    23  // ValidateConfig performs storage provider config validation, including
    24  // any common validation.
    25  func ValidateConfig(p storage.Provider, cfg *storage.Config) error {
    26  	if p.Scope() == storage.ScopeMachine && cfg.IsPersistent() {
    27  		return errors.Errorf("machine scoped storage provider %q does not support persistent storage", cfg.Name())
    28  	}
    29  	return p.ValidateConfig(cfg)
    30  }