github.com/phobos182/packer@v0.2.3-0.20130819023704-c84d2aeffc68/post-processor/vagrant/aws.go (about)

     1  package vagrant
     2  
     3  import (
     4  	"fmt"
     5  	"github.com/mitchellh/packer/common"
     6  	"github.com/mitchellh/packer/packer"
     7  	"io/ioutil"
     8  	"log"
     9  	"os"
    10  	"path/filepath"
    11  	"strings"
    12  )
    13  
    14  type AWSBoxConfig struct {
    15  	common.PackerConfig `mapstructure:",squash"`
    16  
    17  	OutputPath          string `mapstructure:"output"`
    18  	VagrantfileTemplate string `mapstructure:"vagrantfile_template"`
    19  
    20  	tpl *packer.ConfigTemplate
    21  }
    22  
    23  type AWSVagrantfileTemplate struct {
    24  	Images map[string]string
    25  }
    26  
    27  type AWSBoxPostProcessor struct {
    28  	config AWSBoxConfig
    29  }
    30  
    31  func (p *AWSBoxPostProcessor) Configure(raws ...interface{}) error {
    32  	md, err := common.DecodeConfig(&p.config, raws...)
    33  	if err != nil {
    34  		return err
    35  	}
    36  
    37  	p.config.tpl, err = packer.NewConfigTemplate()
    38  	if err != nil {
    39  		return err
    40  	}
    41  	p.config.tpl.UserVars = p.config.PackerUserVars
    42  
    43  	// Accumulate any errors
    44  	errs := common.CheckUnusedConfig(md)
    45  
    46  	validates := map[string]*string{
    47  		"output":               &p.config.OutputPath,
    48  		"vagrantfile_template": &p.config.VagrantfileTemplate,
    49  	}
    50  
    51  	for n, ptr := range validates {
    52  		if err := p.config.tpl.Validate(*ptr); err != nil {
    53  			errs = packer.MultiErrorAppend(
    54  				errs, fmt.Errorf("Error parsing %s: %s", n, err))
    55  		}
    56  	}
    57  
    58  	if errs != nil && len(errs.Errors) > 0 {
    59  		return errs
    60  	}
    61  
    62  	return nil
    63  }
    64  
    65  func (p *AWSBoxPostProcessor) PostProcess(ui packer.Ui, artifact packer.Artifact) (packer.Artifact, bool, error) {
    66  	// Determine the regions...
    67  	tplData := &AWSVagrantfileTemplate{
    68  		Images: make(map[string]string),
    69  	}
    70  
    71  	for _, regions := range strings.Split(artifact.Id(), ",") {
    72  		parts := strings.Split(regions, ":")
    73  		if len(parts) != 2 {
    74  			return nil, false, fmt.Errorf("Poorly formatted artifact ID: %s", artifact.Id())
    75  		}
    76  
    77  		tplData.Images[parts[0]] = parts[1]
    78  	}
    79  
    80  	// Compile the output path
    81  	outputPath, err := p.config.tpl.Process(p.config.OutputPath, &OutputPathTemplate{
    82  		ArtifactId: artifact.Id(),
    83  		BuildName:  p.config.PackerBuildName,
    84  		Provider:   "aws",
    85  	})
    86  	if err != nil {
    87  		return nil, false, err
    88  	}
    89  
    90  	// Create a temporary directory for us to build the contents of the box in
    91  	dir, err := ioutil.TempDir("", "packer")
    92  	if err != nil {
    93  		return nil, false, err
    94  	}
    95  	defer os.RemoveAll(dir)
    96  
    97  	// Create the Vagrantfile from the template
    98  	vf, err := os.Create(filepath.Join(dir, "Vagrantfile"))
    99  	if err != nil {
   100  		return nil, false, err
   101  	}
   102  	defer vf.Close()
   103  
   104  	vagrantfileContents := defaultAWSVagrantfile
   105  	if p.config.VagrantfileTemplate != "" {
   106  		log.Printf("Using vagrantfile template: %s", p.config.VagrantfileTemplate)
   107  		f, err := os.Open(p.config.VagrantfileTemplate)
   108  		if err != nil {
   109  			err = fmt.Errorf("error opening vagrantfile template: %s", err)
   110  			return nil, false, err
   111  		}
   112  		defer f.Close()
   113  
   114  		contents, err := ioutil.ReadAll(f)
   115  		if err != nil {
   116  			err = fmt.Errorf("error reading vagrantfile template: %s", err)
   117  			return nil, false, err
   118  		}
   119  
   120  		vagrantfileContents = string(contents)
   121  	}
   122  
   123  	vagrantfileContents, err = p.config.tpl.Process(vagrantfileContents, tplData)
   124  	if err != nil {
   125  		return nil, false, fmt.Errorf("Error writing Vagrantfile: %s", err)
   126  	}
   127  	vf.Write([]byte(vagrantfileContents))
   128  	vf.Close()
   129  
   130  	// Create the metadata
   131  	metadata := map[string]string{"provider": "aws"}
   132  	if err := WriteMetadata(dir, metadata); err != nil {
   133  		return nil, false, err
   134  	}
   135  
   136  	// Compress the directory to the given output path
   137  	if err := DirToBox(outputPath, dir); err != nil {
   138  		err = fmt.Errorf("error creating box: %s", err)
   139  		return nil, false, err
   140  	}
   141  
   142  	return NewArtifact("aws", outputPath), true, nil
   143  }
   144  
   145  var defaultAWSVagrantfile = `
   146  Vagrant.configure("2") do |config|
   147    config.vm.provider "aws" do |aws|
   148      {{ range $region, $ami := .Images }}
   149  	aws.region_config "{{ $region }}", ami: "{{ $ami }}"
   150  	{{ end }}
   151    end
   152  end
   153  `