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Viewing changes to environs/imagemetadata/boilerplate.go

  • Committer: Frank Mueller
  • Date: 2013-08-02 12:04:49 UTC
  • mfrom: (1567.1.18 juju-core)
  • Revision ID: frank.mueller@canonical.com-20130802120449-bdmjta1ppsgafwov
cmd/set: merged trunk

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environs/imagemetadata/boilerplate.go
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        "fmt"
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        "io/ioutil"
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        "launchpad.net/juju-core/environs/config"
 
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        "os"
 
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        "path/filepath"
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        "text/template"
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        "time"
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)
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const (
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        defaultIndexFileName = "index.json"
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        defaultImageFileName = "imagemetadata.json"
 
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        streamsDir           = "streams/v1"
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)
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// Boilerplate generates some basic simplestreams metadata using the specified cloud and image details.
 
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// If name is non-empty, it will be used as a prefix for the names of the generated index and image files.
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func Boilerplate(name, series string, im *ImageMetadata, cloudSpec *CloudSpec) ([]string, error) {
 
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        return MakeBoilerplate(name, series, im, cloudSpec, true)
 
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}
 
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// MakeBoilerplate exists so it can be called by tests. See Boilerplate above. It provides an option to retain
 
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// the streams directories when writing the generated metadata files.
 
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func MakeBoilerplate(name, series string, im *ImageMetadata, cloudSpec *CloudSpec, flattenPath bool) ([]string, error) {
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        indexFileName := defaultIndexFileName
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        imageFileName := defaultImageFileName
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        if name != "" {
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                Arch:          im.Arch,
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                Region:        cloudSpec.Region,
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                URL:           cloudSpec.Endpoint,
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                Path:          "streams/v1",
 
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                Path:          streamsDir,
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                ImageFileName: imageFileName,
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                Updated:       now.Format(time.RFC1123Z),
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                VersionKey:    now.Format("20060102"),
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                return nil, fmt.Errorf("invalid series %q", series)
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        }
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        if !flattenPath {
 
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                streamsPath := config.JujuHomePath(streamsDir)
 
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                if err = os.MkdirAll(streamsPath, 0755); err != nil {
 
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                        return nil, err
 
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                }
 
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                indexFileName = filepath.Join(streamsDir, indexFileName)
 
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                imageFileName = filepath.Join(streamsDir, imageFileName)
 
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        }
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        err = writeJsonFile(imparams, indexFileName, indexBoilerplate)
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        if err != nil {
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                return nil, err
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{
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 "index": {
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   "com.ubuntu.cloud:custom": {
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    "updated": "{{.Updated}}",
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    "clouds": [
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     {
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       "region": "{{.Region}}",
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       "endpoint": "{{.URL}}"
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     }
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    ],
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    "cloudname": "custom",
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    "datatype": "image-ids",
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    "format": "products:1.0",
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    "products": [
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      "com.ubuntu.cloud:server:{{.Version}}:{{.Arch}}"
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    ],
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    "path": "{{.Path}}/{{.ImageFileName}}"
 
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     "updated": "{{.Updated}}",
 
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     "clouds": [
 
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       {
 
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         "region": "{{.Region}}",
 
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         "endpoint": "{{.URL}}"
 
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       }
 
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     ],
 
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     "cloudname": "custom",
 
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     "datatype": "image-ids",
 
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     "format": "products:1.0",
 
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     "products": [
 
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       "com.ubuntu.cloud:server:{{.Version}}:{{.Arch}}"
 
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     ],
 
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     "path": "{{.Path}}/{{.ImageFileName}}"
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   }
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  },
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  "updated": "{{.Updated}}",
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  "format": "index:1.0"
 
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 },
 
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 "updated": "{{.Updated}}",
 
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 "format": "index:1.0"
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}
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`
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