@@ -0,0 +1,49 @@
+package bug
+
+import "github.com/MichaelMure/git-bug/util/git"
+
+var _ Operation = &NoOpOperation{}
+
+// NoOpOperation is an operation that does not change the bug state. It can
+// however be used to store arbitrary metadata in the bug history, for example
+// to support a bridge feature
+type NoOpOperation struct {
+ OpBase
+}
+
+func (op *NoOpOperation) base() *OpBase {
+ return &op.OpBase
+}
+
+func (op *NoOpOperation) Hash() (git.Hash, error) {
+ return hashOperation(op)
+}
+
+func (op *NoOpOperation) Apply(snapshot *Snapshot) {
+ // Nothing to do
+}
+
+func (op *NoOpOperation) Validate() error {
+ return opBaseValidate(op, NoOpOp)
+}
+
+func NewNoOpOp(author Person, unixTime int64) *NoOpOperation {
+ return &NoOpOperation{
+ OpBase: newOpBase(NoOpOp, author, unixTime),
+ }
+}
+
+// Convenience function to apply the operation
+func NoOp(b Interface, author Person, unixTime int64, metadata map[string]string) (*NoOpOperation, error) {
+ op := NewNoOpOp(author, unixTime)
+
+ for key, value := range metadata {
+ op.SetMetadata(key, value)
+ }
+
+ if err := op.Validate(); err != nil {
+ return nil, err
+ }
+ b.Append(op)
+ return op, nil
+}