Saving Energy Strategy

Add strategy to trigger "power on" and "power off" actions in watcher.

Change-Id: I7ebcd2a0282e3cc7b9b01cf8c744468ce16c56bb
Implements: blueprint strategy-to-trigger-power-on-and-power-off-actions
Co-Authored-By: licanwei <li.canwei2@zte.com.cn>

watcher/decision_engine/goal/__init__.py

@@ -22,7 +22,8 @@ ThermalOptimization = goals.ThermalOptimization
 Unclassified = goals.Unclassified
 WorkloadBalancing = goals.WorkloadBalancing
 NoisyNeighbor = goals.NoisyNeighborOptimization
+SavingEnergy = goals.SavingEnergy
 
 __all__ = ("Dummy", "ServerConsolidation", "ThermalOptimization",
            "Unclassified", "WorkloadBalancing",
-           "NoisyNeighborOptimization",)
+           "NoisyNeighborOptimization", "SavingEnergy")

watcher/decision_engine/goal/goals.py

@@ -192,3 +192,27 @@ class NoisyNeighborOptimization(base.Goal):
     def get_efficacy_specification(cls):
         """The efficacy spec for the current goal"""
         return specs.Unclassified()
+
+
+class SavingEnergy(base.Goal):
+    """SavingEnergy
+
+    This goal is used to reduce power consumption within a data center.
+    """
+
+    @classmethod
+    def get_name(cls):
+        return "saving_energy"
+
+    @classmethod
+    def get_display_name(cls):
+        return _("Saving Energy")
+
+    @classmethod
+    def get_translatable_display_name(cls):
+        return "Saving Energy"
+
+    @classmethod
+    def get_efficacy_specification(cls):
+        """The efficacy spec for the current goal"""
+        return specs.Unclassified()