99 lines
2.0 KiB
Go
99 lines
2.0 KiB
Go
package store
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const (
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Get = "get"
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Create = "create"
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Set = "set"
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Update = "update"
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Delete = "delete"
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CompareAndSwap = "compareAndSwap"
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CompareAndDelete = "compareAndDelete"
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Expire = "expire"
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)
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type Event struct {
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Action string `json:"action"`
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Node *NodeExtern `json:"node,omitempty"`
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PrevNode *NodeExtern `json:"prevNode,omitempty"`
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}
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func newEvent(action string, key string, modifiedIndex, createdIndex uint64) *Event {
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n := &NodeExtern{
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Key: key,
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ModifiedIndex: modifiedIndex,
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CreatedIndex: createdIndex,
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}
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return &Event{
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Action: action,
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Node: n,
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}
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}
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func (e *Event) IsCreated() bool {
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if e.Action == Create {
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return true
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}
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if e.Action == Set && e.PrevNode == nil {
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return true
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}
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return false
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}
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func (e *Event) Index() uint64 {
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return e.Node.ModifiedIndex
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}
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// Converts an event object into a response object.
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func (event *Event) Response(currentIndex uint64) interface{} {
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if !event.Node.Dir {
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response := &Response{
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Action: event.Action,
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Key: event.Node.Key,
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Value: event.Node.Value,
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Index: event.Node.ModifiedIndex,
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TTL: event.Node.TTL,
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Expiration: event.Node.Expiration,
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}
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if event.PrevNode != nil {
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response.PrevValue = event.PrevNode.Value
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}
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if currentIndex != 0 {
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response.Index = currentIndex
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}
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if response.Action == Set {
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if response.PrevValue == nil {
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response.NewKey = true
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}
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}
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if response.Action == CompareAndSwap || response.Action == Create {
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response.Action = "testAndSet"
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}
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return response
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} else {
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responses := make([]*Response, len(event.Node.Nodes))
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for i, node := range event.Node.Nodes {
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responses[i] = &Response{
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Action: event.Action,
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Key: node.Key,
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Value: node.Value,
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Dir: node.Dir,
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Index: node.ModifiedIndex,
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}
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if currentIndex != 0 {
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responses[i].Index = currentIndex
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}
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}
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return responses
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}
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}
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