packer-cn/packer/provisioner.go

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package packer
// A provisioner is responsible for installing and configuring software
// on a machine prior to building the actual image.
type Provisioner interface {
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// Prepare is called with a set of configurations to setup the
// internal state of the provisioner. The multiple configurations
// should be merged in some sane way.
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Prepare(...interface{}) error
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// Provision is called to actually provision the machine. A UI is
// given to communicate with the user, and a communicator is given that
// is guaranteed to be connected to some machine so that provisioning
// can be done.
Provision(Ui, Communicator) error
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}
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// A Hook implementation that runs the given provisioners.
type ProvisionHook struct {
// The provisioners to run as part of the hook. These should already
// be prepared (by calling Prepare) at some earlier stage.
Provisioners []Provisioner
}
// Runs the provisioners in order.
func (h *ProvisionHook) Run(name string, ui Ui, comm Communicator, data interface{}) error {
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for _, p := range h.Provisioners {
if err := p.Provision(ui, comm); err != nil {
return err
}
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}
return nil
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}