/
states.go
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/
states.go
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// Copyright 2018 Bull S.A.S. Atos Technologies - Bull, Rue Jean Jaures, B.P.68, 78340, Les Clayes-sous-Bois, France.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package tosca
import (
"fmt"
"strings"
"github.com/pkg/errors"
)
type customNodeStateError struct {
state string
}
func (cnse customNodeStateError) Error() string {
return fmt.Sprintf("State %q is not TOSCA normative", cnse.state)
}
// IsCustomNodeStateError checks if the given error is due to a conversion of an non-normative state and if so returns this state as string
func IsCustomNodeStateError(err error) (bool, string) {
if cnse, ok := errors.Cause(err).(customNodeStateError); ok {
return true, cnse.state
}
return false, ""
}
// NodeState represent the state of a node instance this part is normative
//
// We added a non-normative special step "deleted" in order to track deleted instances
type NodeState int
const (
// NodeStateInitial is a non-transitional state indicating that the node is not yet created. Node only exists as a template definition.
NodeStateInitial NodeState = iota
// NodeStateCreating is a transitional state indicating that the Node is transitioning from initial state to created state.
NodeStateCreating
// NodeStateCreated is a non-transitional state indicating that Node software has been installed.
NodeStateCreated
// NodeStateConfiguring is a transitional state indicating that Node is transitioning from created state to configured state.
NodeStateConfiguring
// NodeStateConfigured is a non-transitional state indicating that Node has been configured prior to being started.
NodeStateConfigured
// NodeStateStarting is a transitional state indicating that Node is transitioning from configured state to started state.
NodeStateStarting
// NodeStateStarted is a non-transitional state indicating that Node is started.
NodeStateStarted
// NodeStateStopping is a transitional state indicating that Node is transitioning from its current state to a configured state.
NodeStateStopping
// NodeStateDeleting is a transitional state indicating that Node is transitioning from its current state to one where it is deleted.
//
// We diverge here from the specification that states "and its state is no longer tracked by the instance model".
NodeStateDeleting
// NodeStateError is a non-transitional state indicating that the Node is in an error state.
NodeStateError
// NodeStateDeleted is a non-transitional state indicating that the Node is deleted.
NodeStateDeleted
)
const _NodeState_name = "initialcreatingcreatedconfiguringconfiguredstartingstartedstoppingdeletingerrordeleted"
var _NodeState_index = [...]uint8{0, 7, 15, 22, 33, 43, 51, 58, 66, 74, 79, 86}
func (i NodeState) String() string {
if i < 0 || i >= NodeState(len(_NodeState_index)-1) {
return fmt.Sprintf("State(%d)", i)
}
return _NodeState_name[_NodeState_index[i]:_NodeState_index[i+1]]
}
var _NodeStateNameToValue_map = map[string]NodeState{
_NodeState_name[0:7]: 0,
_NodeState_name[7:15]: 1,
_NodeState_name[15:22]: 2,
_NodeState_name[22:33]: 3,
_NodeState_name[33:43]: 4,
_NodeState_name[43:51]: 5,
_NodeState_name[51:58]: 6,
_NodeState_name[58:66]: 7,
_NodeState_name[66:74]: 8,
_NodeState_name[74:79]: 9,
_NodeState_name[79:86]: 10,
}
// NodeStateString returns the NodeState corresponding to the given string representation.
//
// The given string is lowercased before checking it against node states representations.
func NodeStateString(s string) (NodeState, error) {
s = strings.ToLower(s)
if val, ok := _NodeStateNameToValue_map[s]; ok {
return val, nil
}
return 0, errors.WithStack(customNodeStateError{s})
}