up: store outputs and merge in query

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

dagger/state.go

@@ -0,0 +1,56 @@
+package dagger
+
+// Contents of a deployment serialized to a file
+type DeploymentState struct {
+	// Globally unique deployment ID
+	ID string `json:"id,omitempty"`
+
+	// Human-friendly deployment name.
+	// A deployment may have more than one name.
+	// FIXME: store multiple names?
+	Name string `json:"name,omitempty"`
+
+	// Cue module containing the deployment plan
+	// The input's top-level artifact is used as a module directory.
+	PlanSource Input `json:"plan,omitempty"`
+
+	// User Inputs
+	Inputs []inputKV `json:"inputs,omitempty"`
+
+	// Computed values
+	Computed string `json:"output,omitempty"`
+}
+
+type inputKV struct {
+	Key   string `json:"key,omitempty"`
+	Value Input  `json:"value,omitempty"`
+}
+
+func (s *DeploymentState) SetInput(key string, value Input) error {
+	for i, inp := range s.Inputs {
+		if inp.Key != key {
+			continue
+		}
+		// Remove existing inputs with the same key
+		s.Inputs = append(s.Inputs[:i], s.Inputs[i+1:]...)
+	}
+
+	s.Inputs = append(s.Inputs, inputKV{Key: key, Value: value})
+	return nil
+}
+
+// Remove all inputs at the given key, including sub-keys.
+// For example RemoveInputs("foo.bar") will remove all inputs
+//   at foo.bar, foo.bar.baz, etc.
+func (s *DeploymentState) RemoveInputs(key string) error {
+	newInputs := make([]inputKV, 0, len(s.Inputs))
+	for _, i := range s.Inputs {
+		if i.Key == key {
+			continue
+		}
+		newInputs = append(newInputs, i)
+	}
+	s.Inputs = newInputs
+
+	return nil
+}