Initial distributor implementation

common/api/dm/service/v1/execution_data.go

Index: common/api/dm/service/v1/execution_data.go
diff --git a/common/api/dm/service/v1/execution_data.go b/common/api/dm/service/v1/execution_data.go
new file mode 100644
index 0000000000000000000000000000000000000000..effb4467652636213737265e562d1c229855e481
--- /dev/null
+++ b/common/api/dm/service/v1/execution_data.go
@@ -0,0 +1,77 @@
+// Copyright 2016 The LUCI Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
+
+package dm
+
+import "errors"
+
+// NewExecutionScheduling creates an Execution in the SCHEDULING state.
+func NewExecutionScheduling() *Execution {
+	return &Execution{
+		Data: &Execution_Data{
+			ExecutionType: &Execution_Data_Scheduling_{
+				&Execution_Data_Scheduling{}}}}
+}
+
+// NewExecutionRunning creates an Execution in the RUNNING state.
+func NewExecutionRunning() *Execution {
+	return &Execution{
+		Data: &Execution_Data{
+			ExecutionType: &Execution_Data_Running_{
+				&Execution_Data_Running{}}}}
+}
+
+// NewExecutionStopping creates an Execution in the STOPPING state.
+func NewExecutionStopping() *Execution {
+	return &Execution{
+		Data: &Execution_Data{
+			ExecutionType: &Execution_Data_Stopping_{
+				&Execution_Data_Stopping{}}}}
+}
+
+// NewExecutionFinished creates an Execution in the FINISHED state.
+func NewExecutionFinished(state string) *Execution {
+	return &Execution{
+		Data: &Execution_Data{
+			ExecutionType: &Execution_Data_Finished_{
+				&Execution_Data_Finished{state}}}}
+}
+
+// NewExecutionAbnormalFinish creates an Execution in the ABNORMAL_FINISH state.
+func NewExecutionAbnormalFinish(af *AbnormalFinish) *Execution {
+	return &Execution{
+		Data: &Execution_Data{
+			ExecutionType: &Execution_Data_AbnormalFinish{af}}}
+}
+
+// State computes the Execution_State for the current Execution_Data
+func (d *Execution_Data) State() Execution_State {
+	if d != nil {
+		switch d.ExecutionType.(type) {
+		case *Execution_Data_Scheduling_:
+			return Execution_SCHEDULING
+		case *Execution_Data_Running_:
+			return Execution_RUNNING
+		case *Execution_Data_Stopping_:
+			return Execution_STOPPING
+		case *Execution_Data_Finished_:
+			return Execution_FINISHED
+		case *Execution_Data_AbnormalFinish:
+			return Execution_ABNORMAL_FINISHED
+		}
+	}
+	return Execution_SCHEDULING
+}
+
+// Normalize returns an error iff the Execution_Auth has invalid form (e.g.
+// contains nils).
+func (a *Execution_Auth) Normalize() error {
+	if a == nil {
+		return errors.New("Execution_Auth is nil")
+	}
+	if a.Id == nil {
+		return errors.New("Execution_Auth.Id is nil")
+	}
+	return nil
+}