90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
package vmware
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import (
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"crypto/md5"
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"encoding/hex"
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"fmt"
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"github.com/mitchellh/multistep"
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"github.com/mitchellh/packer/builder/common"
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"github.com/mitchellh/packer/packer"
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"log"
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"time"
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)
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// This step downloads the ISO specified.
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//
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// Uses:
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// cache packer.Cache
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// config *config
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// ui packer.Ui
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//
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// Produces:
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// iso_path string
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type stepDownloadISO struct{}
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func (s stepDownloadISO) Run(state map[string]interface{}) multistep.StepAction {
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cache := state["cache"].(packer.Cache)
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config := state["config"].(*config)
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ui := state["ui"].(packer.Ui)
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checksum, err := hex.DecodeString(config.ISOMD5)
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if err != nil {
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err := fmt.Errorf("Error parsing checksum: %s", err)
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state["error"] = err
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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log.Printf("Acquiring lock to download the ISO.")
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cachePath := cache.Lock(config.ISOUrl)
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defer cache.Unlock(config.ISOUrl)
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downloadConfig := &common.DownloadConfig{
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Url: config.ISOUrl,
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TargetPath: cachePath,
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CopyFile: false,
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Hash: md5.New(),
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Checksum: checksum,
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}
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download := common.NewDownloadClient(downloadConfig)
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downloadCompleteCh := make(chan error, 1)
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go func() {
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ui.Say("Copying or downloading ISO. Progress will be reported periodically.")
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cachePath, err = download.Get()
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downloadCompleteCh <- err
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}()
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progressTicker := time.NewTicker(5 * time.Second)
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defer progressTicker.Stop()
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DownloadWaitLoop:
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for {
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select {
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case err := <-downloadCompleteCh:
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if err != nil {
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err := fmt.Errorf("Error downloading ISO: %s", err)
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state["error"] = err
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ui.Error(err.Error())
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}
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break DownloadWaitLoop
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case <-progressTicker.C:
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ui.Say(fmt.Sprintf("Download progress: %d%%", download.PercentProgress()))
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case <-time.After(1 * time.Second):
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if _, ok := state[multistep.StateCancelled]; ok {
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ui.Say("Interrupt received. Cancelling download...")
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return multistep.ActionHalt
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}
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}
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}
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log.Printf("Path to ISO on disk: %s", cachePath)
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state["iso_path"] = cachePath
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return multistep.ActionContinue
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}
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func (stepDownloadISO) Cleanup(map[string]interface{}) {}
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