package bug import ( "encoding/json" "github.com/MichaelMure/git-bug/identity" "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) } // Workaround to avoid the inner OpBase.MarshalJSON overriding the outer op // MarshalJSON func (op *NoOpOperation) MarshalJSON() ([]byte, error) { base, err := json.Marshal(op.OpBase) if err != nil { return nil, err } // revert back to a flat map to be able to add our own fields var data map[string]interface{} if err := json.Unmarshal(base, &data); err != nil { return nil, err } return json.Marshal(data) } // Workaround to avoid the inner OpBase.MarshalJSON overriding the outer op // MarshalJSON func (op *NoOpOperation) UnmarshalJSON(data []byte) error { // Unmarshal OpBase and the op separately base := OpBase{} err := json.Unmarshal(data, &base) if err != nil { return err } aux := struct{}{} err = json.Unmarshal(data, &aux) if err != nil { return err } op.OpBase = base return nil } // Sign post method for gqlgen func (op *NoOpOperation) IsAuthored() {} func NewNoOpOp(author identity.Interface, unixTime int64) *NoOpOperation { return &NoOpOperation{ OpBase: newOpBase(NoOpOp, author, unixTime), } } // Convenience function to apply the operation func NoOp(b Interface, author identity.Interface, 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 }