packer-cn/packer/plugin/builder.go
Adrien Delorme 9f82b75e57 Use the hashicorp/go-getter to download files
* removed packer.Cache and references since packer.Cache is never used except in the download step. The download step now uses the new func packer.CachePath(targetPath) for this, the behavior is the same.
* removed download code from packer that was reimplemented into the go-getter library: progress bar, http download restart, checksuming from file, skip already downloaded files, symlinking, make a download cancellable by context.
* on windows if packer is running without symlinking rights and we are getting a local file, the file will be copied instead to avoid errors.
* added unit tests for step_download that are now CI tested on windows, mac & linux.
* files are now downloaded under cache dir `sha1(filename + "?checksum=" + checksum) + file_extension`
* since the output dir is based on the source url and the checksum, when the checksum fails, the file is auto deleted.
* a download file is protected and locked by a file lock,
* updated docs
* updated go modules and vendors
2019-03-13 12:11:58 +01:00

48 lines
768 B
Go

package plugin
import (
"log"
"github.com/hashicorp/packer/packer"
)
type cmdBuilder struct {
builder packer.Builder
client *Client
}
func (b *cmdBuilder) Prepare(config ...interface{}) ([]string, error) {
defer func() {
r := recover()
b.checkExit(r, nil)
}()
return b.builder.Prepare(config...)
}
func (b *cmdBuilder) Run(ui packer.Ui, hook packer.Hook) (packer.Artifact, error) {
defer func() {
r := recover()
b.checkExit(r, nil)
}()
return b.builder.Run(ui, hook)
}
func (b *cmdBuilder) Cancel() {
defer func() {
r := recover()
b.checkExit(r, nil)
}()
b.builder.Cancel()
}
func (c *cmdBuilder) checkExit(p interface{}, cb func()) {
if c.client.Exited() && cb != nil {
cb()
} else if p != nil && !Killed {
log.Panic(p)
}
}