github.com/turtlemonvh/terraform@v0.6.9-0.20151204001754-8e40b6b855e8/terraform/hook_stop.go (about)

     1  package terraform
     2  
     3  import (
     4  	"sync/atomic"
     5  )
     6  
     7  // stopHook is a private Hook implementation that Terraform uses to
     8  // signal when to stop or cancel actions.
     9  type stopHook struct {
    10  	stop uint32
    11  }
    12  
    13  func (h *stopHook) PreApply(*InstanceInfo, *InstanceState, *InstanceDiff) (HookAction, error) {
    14  	return h.hook()
    15  }
    16  
    17  func (h *stopHook) PostApply(*InstanceInfo, *InstanceState, error) (HookAction, error) {
    18  	return h.hook()
    19  }
    20  
    21  func (h *stopHook) PreDiff(*InstanceInfo, *InstanceState) (HookAction, error) {
    22  	return h.hook()
    23  }
    24  
    25  func (h *stopHook) PostDiff(*InstanceInfo, *InstanceDiff) (HookAction, error) {
    26  	return h.hook()
    27  }
    28  
    29  func (h *stopHook) PreProvisionResource(*InstanceInfo, *InstanceState) (HookAction, error) {
    30  	return h.hook()
    31  }
    32  
    33  func (h *stopHook) PostProvisionResource(*InstanceInfo, *InstanceState) (HookAction, error) {
    34  	return h.hook()
    35  }
    36  
    37  func (h *stopHook) PreProvision(*InstanceInfo, string) (HookAction, error) {
    38  	return h.hook()
    39  }
    40  
    41  func (h *stopHook) PostProvision(*InstanceInfo, string) (HookAction, error) {
    42  	return h.hook()
    43  }
    44  
    45  func (h *stopHook) ProvisionOutput(*InstanceInfo, string, string) {
    46  }
    47  
    48  func (h *stopHook) PreRefresh(*InstanceInfo, *InstanceState) (HookAction, error) {
    49  	return h.hook()
    50  }
    51  
    52  func (h *stopHook) PostRefresh(*InstanceInfo, *InstanceState) (HookAction, error) {
    53  	return h.hook()
    54  }
    55  
    56  func (h *stopHook) PostStateUpdate(*State) (HookAction, error) {
    57  	return h.hook()
    58  }
    59  
    60  func (h *stopHook) hook() (HookAction, error) {
    61  	if h.Stopped() {
    62  		return HookActionHalt, nil
    63  	}
    64  
    65  	return HookActionContinue, nil
    66  }
    67  
    68  // reset should be called within the lock context
    69  func (h *stopHook) Reset() {
    70  	atomic.StoreUint32(&h.stop, 0)
    71  }
    72  
    73  func (h *stopHook) Stop() {
    74  	atomic.StoreUint32(&h.stop, 1)
    75  }
    76  
    77  func (h *stopHook) Stopped() bool {
    78  	return atomic.LoadUint32(&h.stop) == 1
    79  }