From 1cee0459cf7e059fd1c75b4287712036b3939691 Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <fabio@manganiello.tech>
Date: Tue, 18 Apr 2023 01:49:36 +0200
Subject: [PATCH] Added `CpuFrequency` entity to `system`.

---
 .../src/components/panels/Entities/Sensor.vue |  6 ++
 platypush/message/response/system/__init__.py | 19 ------
 platypush/plugins/system/__init__.py          | 63 +++++++++++--------
 platypush/schemas/system.py                   | 13 ++++
 4 files changed, 55 insertions(+), 46 deletions(-)

diff --git a/platypush/backend/http/webapp/src/components/panels/Entities/Sensor.vue b/platypush/backend/http/webapp/src/components/panels/Entities/Sensor.vue
index cec9a4de2a..3777ecbdef 100644
--- a/platypush/backend/http/webapp/src/components/panels/Entities/Sensor.vue
+++ b/platypush/backend/http/webapp/src/components/panels/Entities/Sensor.vue
@@ -44,6 +44,12 @@ export default {
 <style lang="scss" scoped>
 @import "common";
 
+.entity {
+  .icon {
+    margin-right: 1em;
+  }
+}
+
 .sensor-container {
   .head {
     .value {
diff --git a/platypush/message/response/system/__init__.py b/platypush/message/response/system/__init__.py
index ad499e4c77..45c7d51f52 100644
--- a/platypush/message/response/system/__init__.py
+++ b/platypush/message/response/system/__init__.py
@@ -28,20 +28,6 @@ class SensorResponse(SystemResponse):
     pass
 
 
-class CpuFrequencyResponse(CpuResponse):
-    # noinspection PyShadowingBuiltins
-    def __init__(self, min: int, max: int, current: int, *args, **kwargs):
-        super().__init__(
-            *args,
-            output={
-                'min': min,
-                'max': max,
-                'current': current,
-            },
-            **kwargs
-        )
-
-
 class VirtualMemoryUsageResponse(MemoryResponse):
     def __init__(
         self,
@@ -437,11 +423,6 @@ class SystemResponseList(SystemResponse):
         super().__init__(output=[r.output for r in responses], *args, **kwargs)
 
 
-class CpuResponseList(CpuResponse, SystemResponseList):
-    def __init__(self, responses: List[CpuResponse], *args, **kwargs):
-        super().__init__(responses=responses, *args, **kwargs)
-
-
 class DiskResponseList(DiskResponse, SystemResponseList):
     def __init__(self, responses: List[DiskResponse], *args, **kwargs):
         super().__init__(responses=responses, *args, **kwargs)
diff --git a/platypush/plugins/system/__init__.py b/platypush/plugins/system/__init__.py
index 8e3644c0c4..80bce33f90 100644
--- a/platypush/plugins/system/__init__.py
+++ b/platypush/plugins/system/__init__.py
@@ -14,8 +14,6 @@ from platypush.entities.system import (
     CpuTimes as CpuTimesModel,
 )
 from platypush.message.response.system import (
-    CpuResponseList,
-    CpuFrequencyResponse,
     VirtualMemoryUsageResponse,
     SwapMemoryUsageResponse,
     DiskResponseList,
@@ -39,6 +37,8 @@ from platypush.message.response.system import (
 from platypush.plugins import action
 from platypush.plugins.sensor import SensorPlugin
 from platypush.schemas.system import (
+    CpuFrequency,
+    CpuFrequencySchema,
     CpuInfo,
     CpuInfoSchema,
     CpuStats,
@@ -107,7 +107,7 @@ class SystemPlugin(SensorPlugin, EntityManager):
     @action
     def cpu_times(self, per_cpu=False, percent=True) -> Union[list, dict]:
         """
-        Get the CPU times stats.
+        Get the CPU times per status, either as absolute time or a percentage.
 
         :param per_cpu: Get per-CPU stats (default: False).
         :param percent: Get the stats in percentage (default: True).
@@ -161,37 +161,37 @@ class SystemPlugin(SensorPlugin, EntityManager):
         """
         return CpuStatsSchema().dump(self._cpu_stats())  # type: ignore
 
+    def _cpu_frequency_avg(self) -> CpuFrequency:
+        import psutil
+
+        freq = psutil.cpu_freq(percpu=False)
+        return CpuFrequencySchema().load(freq._asdict())  # type: ignore
+
+    def _cpu_frequency_per_cpu(self) -> List[CpuFrequency]:
+        import psutil
+
+        freq = psutil.cpu_freq(percpu=True)
+        return CpuFrequencySchema().load(freq._asdict(), many=True)  # type: ignore
+
     @action
     def cpu_frequency(
         self, per_cpu: bool = False
-    ) -> Union[CpuFrequencyResponse, CpuResponseList]:
+    ) -> Union[CpuFrequency, List[CpuFrequency]]:
         """
-        Get CPU stats.
+        Get the CPU frequency, in MHz.
 
         :param per_cpu: Get per-CPU stats (default: False).
-        :return: :class:`platypush.message.response.system.CpuFrequencyResponse`
+        :return: If ``per_cpu=False``:
+
+            .. schema:: system.CpuFrequencySchema
+
+        If ``per_cpu=True`` then a list will be returned, where each item
+        identifies the CPU times of a core:
+
+           .. schema:: system.CpuFrequencySchema(many=True)
+
         """
-        import psutil
-
-        freq = psutil.cpu_freq(percpu=per_cpu)
-
-        if per_cpu:
-            return CpuResponseList(
-                [
-                    CpuFrequencyResponse(
-                        min=f.min,
-                        max=f.max,
-                        current=f.current,
-                    )
-                    for f in freq
-                ]
-            )
-
-        return CpuFrequencyResponse(
-            min=freq.min,
-            max=freq.max,
-            current=freq.current,
-        )
+        return self._cpu_frequency_per_cpu() if per_cpu else self._cpu_frequency_avg()
 
     @action
     def load_avg(self) -> List[float]:
@@ -790,6 +790,7 @@ class SystemPlugin(SensorPlugin, EntityManager):
         ret = SystemInfoSchema().dump(
             {
                 'cpu': {
+                    'frequency': self._cpu_frequency_avg(),
                     'info': self._cpu_info,
                     'stats': self._cpu_stats(),
                     'times': self._cpu_times_avg(),
@@ -838,6 +839,14 @@ class SystemPlugin(SensorPlugin, EntityManager):
                             for key, time_percent in cpu['times'].items()
                         ],
                     ),
+                    NumericSensor(
+                        id='system:cpu:frequency',
+                        name='Frequency',
+                        value=round(cpu['frequency']['current'], 2),
+                        min=cpu['frequency']['min'],
+                        max=cpu['frequency']['max'],
+                        unit='MHz',
+                    ),
                     PercentSensor(
                         id='system:cpu:percent',
                         name='Percent',
diff --git a/platypush/schemas/system.py b/platypush/schemas/system.py
index 32014318c4..3f0855a8fd 100644
--- a/platypush/schemas/system.py
+++ b/platypush/schemas/system.py
@@ -201,6 +201,17 @@ class CpuStats:
     syscalls: int
 
 
+@dataclass
+class CpuFrequency:
+    """
+    CPU frequency data class.
+    """
+
+    current: float
+    min: float
+    max: float
+
+
 @dataclass
 class CpuData:
     """
@@ -209,6 +220,7 @@ class CpuData:
 
     info: CpuInfo
     times: CpuTimes
+    frequency: CpuFrequency
     stats: CpuStats
     percent: float = percent_field()
 
@@ -222,6 +234,7 @@ class SystemInfo:
     cpu: CpuData
 
 
+CpuFrequencySchema = class_schema(CpuFrequency, base_schema=DataClassSchema)
 CpuInfoSchema = class_schema(CpuInfo, base_schema=CpuInfoBaseSchema)
 CpuTimesSchema = class_schema(CpuTimes, base_schema=CpuTimesBaseSchema)
 CpuStatsSchema = class_schema(CpuStats, base_schema=DataClassSchema)