github.com/axw/juju@v0.0.0-20161005053422-4bd6544d08d4/provider/vsphere/provider.go (about)

     1  // Copyright 2015 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  // +build !gccgo
     5  
     6  package vsphere
     7  
     8  import (
     9  	"github.com/juju/errors"
    10  	"github.com/juju/loggo"
    11  
    12  	"github.com/juju/juju/cloud"
    13  	"github.com/juju/juju/environs"
    14  	"github.com/juju/juju/environs/config"
    15  )
    16  
    17  type environProvider struct {
    18  	environProviderCredentials
    19  }
    20  
    21  var providerInstance = environProvider{}
    22  var _ environs.EnvironProvider = providerInstance
    23  
    24  var logger = loggo.GetLogger("juju.provider.vmware")
    25  
    26  // Open implements environs.EnvironProvider.
    27  func (environProvider) Open(args environs.OpenParams) (environs.Environ, error) {
    28  	if err := validateCloudSpec(args.Cloud); err != nil {
    29  		return nil, errors.Annotate(err, "validating cloud spec")
    30  	}
    31  	env, err := newEnviron(args.Cloud, args.Config)
    32  	return env, errors.Trace(err)
    33  }
    34  
    35  // PrepareConfig implements environs.EnvironProvider.
    36  func (p environProvider) PrepareConfig(args environs.PrepareConfigParams) (*config.Config, error) {
    37  	if err := validateCloudSpec(args.Cloud); err != nil {
    38  		return nil, errors.Annotate(err, "validating cloud spec")
    39  	}
    40  	return args.Config, nil
    41  }
    42  
    43  // Validate implements environs.EnvironProvider.
    44  func (environProvider) Validate(cfg, old *config.Config) (valid *config.Config, err error) {
    45  	if old == nil {
    46  		ecfg, err := newValidConfig(cfg, configDefaults)
    47  		if err != nil {
    48  			return nil, errors.Annotate(err, "invalid config")
    49  		}
    50  		return ecfg.Config, nil
    51  	}
    52  
    53  	// The defaults should be set already, so we pass nil.
    54  	ecfg, err := newValidConfig(old, nil)
    55  	if err != nil {
    56  		return nil, errors.Annotate(err, "invalid base config")
    57  	}
    58  
    59  	if err := ecfg.update(cfg); err != nil {
    60  		return nil, errors.Annotate(err, "invalid config change")
    61  	}
    62  
    63  	return ecfg.Config, nil
    64  }
    65  
    66  func validateCloudSpec(spec environs.CloudSpec) error {
    67  	if err := spec.Validate(); err != nil {
    68  		return errors.Trace(err)
    69  	}
    70  	// TODO(axw) add validation of endpoint/region.
    71  	if spec.Credential == nil {
    72  		return errors.NotValidf("missing credential")
    73  	}
    74  	if authType := spec.Credential.AuthType(); authType != cloud.UserPassAuthType {
    75  		return errors.NotSupportedf("%q auth-type", authType)
    76  	}
    77  	return nil
    78  }