package plugin import ( "github.com/mitchellh/packer/packer" "log" ) 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, cache packer.Cache) (packer.Artifact, error) { defer func() { r := recover() b.checkExit(r, nil) }() return b.builder.Run(ui, hook, cache) } 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) } }