github.com/wallyworld/juju@v0.0.0-20161013125918-6cf1bc9d917a/worker/uniter/operation/skip.go (about)

     1  // Copyright 2014-2015 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package operation
     5  
     6  import (
     7  	"fmt"
     8  )
     9  
    10  type skipOperation struct {
    11  	Operation
    12  }
    13  
    14  // String is part of the Operation interface.
    15  func (op *skipOperation) String() string {
    16  	return fmt.Sprintf("skip %s", op.Operation)
    17  }
    18  
    19  // NeedsGlobalMachineLock is part of the Operation interface.
    20  func (op *skipOperation) NeedsGlobalMachineLock() bool {
    21  	return false
    22  }
    23  
    24  // Prepare is part of the Operation interface.
    25  func (op *skipOperation) Prepare(state State) (*State, error) {
    26  	return nil, ErrSkipExecute
    27  }
    28  
    29  // Execute is part of the Operation interface.
    30  func (op *skipOperation) Execute(state State) (*State, error) {
    31  	return nil, ErrSkipExecute
    32  }