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Viewing changes to src/github.com/juju/juju/api/common/cloudspec/cloudspec.go

  • Committer: Nicholas Skaggs
  • Date: 2016-10-24 20:56:05 UTC
  • Revision ID: nicholas.skaggs@canonical.com-20161024205605-z8lta0uvuhtxwzwl
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src/github.com/juju/juju/api/common/cloudspec/cloudspec.go
 
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// Copyright 2016 Canonical Ltd.
 
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// Licensed under the AGPLv3, see LICENCE file for details.
 
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package cloudspec
 
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import (
 
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        "github.com/juju/errors"
 
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        names "gopkg.in/juju/names.v2"
 
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        "github.com/juju/juju/api/base"
 
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        "github.com/juju/juju/apiserver/params"
 
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        "github.com/juju/juju/cloud"
 
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        "github.com/juju/juju/environs"
 
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)
 
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// CloudSpecAPI provides common client-side API functions
 
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// to call into apiserver/common/cloudspec.CloudSpec.
 
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type CloudSpecAPI struct {
 
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        facade base.FacadeCaller
 
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}
 
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// NewCloudSpecAPI creates a CloudSpecAPI using the provided
 
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// FacadeCaller.
 
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func NewCloudSpecAPI(facade base.FacadeCaller) *CloudSpecAPI {
 
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        return &CloudSpecAPI{facade}
 
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}
 
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// CloudSpec returns the cloud specification for the model
 
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// with the given tag.
 
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func (api *CloudSpecAPI) CloudSpec(tag names.ModelTag) (environs.CloudSpec, error) {
 
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        var results params.CloudSpecResults
 
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        args := params.Entities{Entities: []params.Entity{{tag.String()}}}
 
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        err := api.facade.FacadeCall("CloudSpec", args, &results)
 
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        if err != nil {
 
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                return environs.CloudSpec{}, err
 
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        }
 
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        if n := len(results.Results); n != 1 {
 
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                return environs.CloudSpec{}, errors.Errorf("expected 1 result, got %d", n)
 
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        }
 
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        result := results.Results[0]
 
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        if result.Error != nil {
 
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                return environs.CloudSpec{}, errors.Annotate(result.Error, "API request failed")
 
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        }
 
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        var credential *cloud.Credential
 
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        if result.Result.Credential != nil {
 
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                credentialValue := cloud.NewCredential(
 
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                        cloud.AuthType(result.Result.Credential.AuthType),
 
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                        result.Result.Credential.Attributes,
 
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                )
 
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                credential = &credentialValue
 
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        }
 
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        spec := environs.CloudSpec{
 
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                Type:            result.Result.Type,
 
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                Name:            result.Result.Name,
 
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                Region:          result.Result.Region,
 
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                Endpoint:        result.Result.Endpoint,
 
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                StorageEndpoint: result.Result.StorageEndpoint,
 
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                Credential:      credential,
 
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        }
 
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        if err := spec.Validate(); err != nil {
 
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                return environs.CloudSpec{}, errors.Annotate(err, "validating CloudSpec")
 
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        }
 
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        return spec, nil
 
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}