packer-cn/provisioner/file/provisioner.go
Mark Peek ed75091bd4 Log an upload error closer to when it occurs
When there is an error returned from the Upload it is propagated back
to the main loop and may have additional log messages before the actual
error is displayed. This displays a log message close to where the error
actually occurred.
2013-07-17 18:17:46 -07:00

88 lines
1.7 KiB
Go

package file
import (
"errors"
"fmt"
"github.com/mitchellh/mapstructure"
"github.com/mitchellh/packer/packer"
"os"
"sort"
"strings"
)
type config struct {
// The local path of the file to upload.
Source string
// The remote path where the local file will be uploaded to.
Destination string
}
type Provisioner struct {
config config
}
func (p *Provisioner) Prepare(raws ...interface{}) error {
var md mapstructure.Metadata
decoderConfig := &mapstructure.DecoderConfig{
Metadata: &md,
Result: &p.config,
}
decoder, err := mapstructure.NewDecoder(decoderConfig)
if err != nil {
return err
}
for _, raw := range raws {
err := decoder.Decode(raw)
if err != nil {
return err
}
}
// Accumulate any errors
errs := make([]error, 0)
// Unused keys are errors
if len(md.Unused) > 0 {
sort.Strings(md.Unused)
for _, unused := range md.Unused {
if unused != "type" && !strings.HasPrefix(unused, "packer_") {
errs = append(
errs, fmt.Errorf("Unknown configuration key: %s", unused))
}
}
}
if _, err := os.Stat(p.config.Source); err != nil {
errs = append(errs,
fmt.Errorf("Bad source '%s': %s", p.config.Source, err))
}
if p.config.Destination == "" {
errs = append(errs, errors.New("Destination must be specified."))
}
if len(errs) > 0 {
return &packer.MultiError{errs}
}
return nil
}
func (p *Provisioner) Provision(ui packer.Ui, comm packer.Communicator) error {
ui.Say(fmt.Sprintf("Uploading %s => %s", p.config.Source, p.config.Destination))
f, err := os.Open(p.config.Source)
if err != nil {
return err
}
defer f.Close()
err = comm.Upload(p.config.Destination, f)
if err != nil {
ui.Error(fmt.Sprintf("Upload failed: %s", err))
}
return err
}