package plugin import ( "github.com/mitchellh/packer/packer" "log" ) type cmdPostProcessor struct { p packer.PostProcessor client *Client } func (c *cmdPostProcessor) Configure(config interface{}) error { defer func() { r := recover() c.checkExit(r, nil) }() return c.p.Configure(config) } func (c *cmdPostProcessor) PostProcess(ui packer.Ui, a packer.Artifact) (packer.Artifact, error) { defer func() { r := recover() c.checkExit(r, nil) }() return c.p.PostProcess(ui, a) } func (c *cmdPostProcessor) checkExit(p interface{}, cb func()) { if c.client.Exited() { cb() } else if p != nil { log.Panic(p) } }