ZWave: Add reset service to meters (#7676)

* Add reset service for command_class meters.

* Add reset service for command_class meters.

* cast index to const.py

homeassistant/components/zwave/__init__.py

@@ -95,6 +95,11 @@ REFRESH_ENTITY_SCHEMA = vol.Schema({
     vol.Required(ATTR_ENTITY_ID): cv.entity_id,
 })
 
+RESET_NODE_METERS_SCHEMA = vol.Schema({
+    vol.Required(const.ATTR_NODE_ID): vol.Coerce(int),
+    vol.Optional(const.ATTR_INSTANCE, default=1): vol.Coerce(int)
+})
+
 CHANGE_ASSOCIATION_SCHEMA = vol.Schema({
     vol.Required(const.ATTR_ASSOCIATION): cv.string,
     vol.Required(const.ATTR_NODE_ID): vol.Coerce(int),
@@ -499,6 +504,26 @@ def setup(hass, config):
         node = network.nodes[node_id]
         node.refresh_info()
 
+    def reset_node_meters(service):
+        """Reset meter counters of a node."""
+        node_id = service.data.get(const.ATTR_NODE_ID)
+        instance = service.data.get(const.ATTR_INSTANCE)
+        node = network.nodes[node_id]
+        for value in (
+                node.get_values(class_id=const.COMMAND_CLASS_METER)
+                .values()):
+            if value.index != const.METER_RESET_INDEX:
+                continue
+            if value.instance != instance:
+                continue
+            network.manager.pressButton(value.value_id)
+            network.manager.releaseButton(value.value_id)
+            _LOGGER.info("Resetting meters on node %s instance %s....",
+                         node_id, instance)
+            return
+        _LOGGER.info("Node %s on instance %s does not have resettable "
+                     "meters.", node_id, instance)
+
     def start_zwave(_service_or_event):
         """Startup Z-Wave network."""
         _LOGGER.info("Starting Z-Wave network...")
@@ -606,6 +631,11 @@ def setup(hass, config):
                                descriptions[
                                    const.SERVICE_REFRESH_NODE],
                                schema=NODE_SERVICE_SCHEMA)
+        hass.services.register(DOMAIN, const.SERVICE_RESET_NODE_METERS,
+                               reset_node_meters,
+                               descriptions[
+                                   const.SERVICE_RESET_NODE_METERS],
+                               schema=RESET_NODE_METERS_SCHEMA)
 
     # Setup autoheal
     if autoheal:

homeassistant/components/zwave/const.py

@@ -37,6 +37,7 @@ SERVICE_START_NETWORK = "start_network"
 SERVICE_RENAME_NODE = "rename_node"
 SERVICE_REFRESH_ENTITY = "refresh_entity"
 SERVICE_REFRESH_NODE = "refresh_node"
+SERVICE_RESET_NODE_METERS = "reset_node_meters"
 
 EVENT_SCENE_ACTIVATED = "zwave.scene_activated"
 EVENT_NODE_EVENT = "zwave.node_event"
@@ -329,3 +330,5 @@ DISC_SPECIFIC_DEVICE_CLASS = "specific_device_class"
 DISC_TYPE = "type"
 DISC_VALUES = "values"
 DISC_WRITEONLY = "writeonly"
+
+METER_RESET_INDEX = 33

homeassistant/components/zwave/services.yaml

@@ -108,3 +108,11 @@ rename_node:
     name:
       description: New Name
       example: 'kitchen'
+
+reset_node_meters:
+  description: Resets the meter counters of a node.
+  fields:
+    node_id:
+      description: Node id of the device to reset meters for. (integer)
+    instance:
+      description: (Optional) Instance of association. Defaults to instance 1.

tests/components/zwave/test_init.py

@@ -1015,6 +1015,46 @@ class TestZWaveServices(unittest.TestCase):
 
         assert value.data == 15
 
+    def test_reset_node_meters(self):
+        """Test zwave reset_node_meters service."""
+        value = MockValue(
+            instance=1,
+            index=8,
+            data=99.5,
+            command_class=const.COMMAND_CLASS_METER,
+        )
+        reset_value = MockValue(
+            instance=1,
+            index=33,
+            command_class=const.COMMAND_CLASS_METER,
+        )
+        node = MockNode(node_id=14)
+        node.values = {8: value, 33: reset_value}
+        node.get_values.return_value = node.values
+        self.zwave_network.nodes = {14: node}
+
+        self.hass.services.call('zwave', 'reset_node_meters', {
+            const.ATTR_NODE_ID: 14,
+            const.ATTR_INSTANCE: 2,
+        })
+        self.hass.block_till_done()
+
+        assert not self.zwave_network.manager.pressButton.called
+        assert not self.zwave_network.manager.releaseButton.called
+
+        self.hass.services.call('zwave', 'reset_node_meters', {
+            const.ATTR_NODE_ID: 14,
+        })
+        self.hass.block_till_done()
+
+        assert self.zwave_network.manager.pressButton.called
+        value_id, = self.zwave_network.manager.pressButton.mock_calls.pop(0)[1]
+        assert value_id == reset_value.value_id
+        assert self.zwave_network.manager.releaseButton.called
+        value_id, = (
+            self.zwave_network.manager.releaseButton.mock_calls.pop(0)[1])
+        assert value_id == reset_value.value_id
+
     def test_add_association(self):
         """Test zwave change_association service."""
         ZWaveGroup = self.mock_openzwave.group.ZWaveGroup