Modify the code to remove single drive class

Remove the class for single drive data fetching, and so we can modify
the monitor code to make sure we can handle multiple drives

monitor/oneUpMon.py

@@ -8,12 +8,12 @@ Requires: PyQt5 (including QtCharts)
 """
 
 import sys
-from systemsupport import systemData, CPULoad, multiDriveStat
+from systemsupport import CPUInfo, CPULoad, multiDriveStat
 
 # --------------------------
 # Globals
 # --------------------------
-sysdata = systemData()
+cpuinfo = CPUInfo()
 cpuload = CPULoad()
 multiDrive = multiDriveStat()
 
@@ -331,13 +331,13 @@ class MonitorWindow(QMainWindow):
             
         # Obtain the current fan speed
         try:
-            fan_speed = sysdata.fanSpeed
+            fan_speed = cpuinfo.CPUFanSpeed
         except Exception:
             fan_speed = None
 
         temperatures = []
         try:
-            temperatures.append( float(sysdata.CPUTemperature) )
+            temperatures.append( float(cpuinfo.temperature) )
         except Exception:
             temperatures.append( 0.0 )
             

monitor/systemsupport.py

@@ -123,32 +123,16 @@ class multiDriveStat():
     
     If there is a missing drive from the filter, that drive is eliminated.
     
-    Parameters:
-        driveList - if None, generate a list by asking the system
-                   - Otherwise remove all drives from the generated list that
-                     are not in the monitor list.
     '''
-    def __init__(self,driveList:list[str] | None  = None):
+    def __init__(self):
         #
         # Get all drives
         #
-        with os.popen( 'lsblk -o NAME,SIZE,TYPE | grep disk') as command:
+        self._drives = []
+        with os.popen( 'ls -1 /sys/block | grep -v -e loop -e ram') as command:
             lsblk_raw = command.read()
-            lsblk_out = [ l for l in lsblk_raw.split('\n') if l]
+            self._drives = [ l for l in lsblk_raw.split('\n') if l]
-            self._driveInfo = {}
+        self._stats = [ DriveStats(_) for _ in self._drives ]
-            for l in lsblk_out:
-                _item = l.split()
-                self._driveInfo[_item[0]] = _item[1]
-        # filter out drives
-        if driveList is not None:
-            _temp = {}
-            for _drive in driveList:
-                try:
-                    _temp[_drive] = self._driveInfo[_drive]
-                except:
-                    print( f"Filtering out drive {_drive}, not currently connected to system." )
-            self._driveInfo = _temp
-        self._stats = [ DriveStats(_) for _ in self._driveInfo ]
             
     @property
     def drives(self) -> list[str]:
@@ -158,8 +142,7 @@ class multiDriveStat():
         Returns:
             A list of drives
         '''
-        drives = [ _ for _ in self._driveInfo]
+        return self._drives
-        return drives
     
     def driveSize( self, _drive ) -> int:
         '''
@@ -172,22 +155,11 @@ class multiDriveStat():
             The size in bytes, or 0 if the drive does not exist
         '''
         try:
-            factor = self._driveInfo[_drive][-1:]
+            byteCount = 0
-            size   = float(self._driveInfo[_drive][:-1])
+            with os.popen(f'cat /sys/block/{_drive}/size') as command:
-            match factor:
+                sectorCount = command.read().strip()
-                case 'T':
+                byteCount = int(sectorCount) * 512
-                    size *= 1024 * 1024 * 1024 * 1024
+            return byteCount
-                case 'G':
-                    size *= 1024 * 1024 * 1024
-                case 'M':
-                    size *= 1024 * 1024
-                case 'K':
-                    size *= 1024
-                case _:
-                    pass
-            size = int(size/512)
-            size *= 512
-            return size
         except:
             return 0
         
@@ -211,7 +183,7 @@ class multiDriveStat():
                 if smartAttr == "Temperature:":
                     return float(parts[1])
                 else:
-                    return float(parts[0])
+                    return float(parts[9])
             except IndexError:
                 pass
         
@@ -240,19 +212,35 @@ class multiDriveStat():
         for _ in self._stats:
             curData[_.name] = _.readWriteBytes()
         return curData
-
+   
-class systemData:
+class CPUInfo:
-    def __init__( self, _drive : str = 'nvme0n1' ):
+    '''
-        self._drive   = _drive
+    This class deals with getting data about a Raspberry PI CPU
-        self._cpuTemp = CPUTemperature()
+    
-        self._stats   = DriveStats( self._drive )
+    '''
-
+    def __init__( self ):
+        self._cputemp = CPUTemperature()
+        
     @property
-    def CPUTemperature(self) -> int:
+    def temperature( self ) -> float:
-        return self._cpuTemp.temperature
+        '''
-
+        Obtain the temperature of the CPU.  This utilizes a GPIO call to obtain
+        the CPU temp, via the CPUTemperature object from gpiozero
+        
+        Returns:
+            A floating point number represetning the temperature in degrees C
+        '''
+        return self._cputemp.temperature
+    
     @property
-    def fanSpeed( self ) -> float:
+    def CPUFanSpeed( self ) -> float:
+        '''
+        Obtain the speed of the CPU fan.  This is based on monitoring the hardware
+        monitor, assuming that fan1_input is the fan connected to the CPU.
+        
+        Return:
+            The fanspeed as a floating point number
+        '''
         speed= 0
         try:
             command = os.popen( 'cat /sys/devices/platform/cooling_fan/hwmon/*/fan1_input' )
@@ -264,40 +252,6 @@ class systemData:
 
         return float(speed)
 
-    @property
-    def driveTemp(self) -> float:
-        smartOutRaw = ""
-        cmd = f'sudo smartctl -A /dev/{self._drive}'
-        try:
-            command = os.popen( cmd )
-            smartOutRaw = command.read()
-        except Exception as error:
-            print( f"Could not launch {cmd} error is {error}" )
-            return 0.0
-        finally:
-            command.close()
-        
-        smartOut = [ l for l in smartOutRaw.split('\n') if l]
-        for smartAttr in ["Temperature:","194","190"]:
-            try:
-                line = [l for l in smartOut if l.startswith(smartAttr)][0]
-                parts = [p for p in line.replace('\t',' ').split(' ') if p]
-                if smartAttr == "Temperature:":
-                    return float(parts[1])
-                else:
-                    return float(parts[0])
-            except IndexError:
-                pass
-        
-        return float(0.0)
-
-    @property
-    def driveStats(self) -> tuple[float,float]:
-        _data = self._stats.readWriteSectors()
-        readMB = (float(_data[0]) * 512.0)
-        writeMB = (float(_data[1]) * 512.0)
-        return (readMB, writeMB )
-
 class CPULoad:
     '''
     A class to help with obtaining the CPU load of the system. If there is more information
@@ -321,6 +275,8 @@ class CPULoad:
         #
         self._previousData : dict[str,tuple[int,int]] = self._getRawData()
         self._names : list[str] = []
+        self._cputemp : float = CPUTemperature()
+        
         #
         # For each CPU, reset the total and idle amount, and create the list
         # of names
@@ -402,22 +358,21 @@ class CPULoad:
 
     
 if __name__ == "__main__":
-    data = systemData()
-    print( f"CPU Temp : {data.CPUTemperature}" )
-    print( f"Fan Speed: {data.fanSpeed}" )
-    print( f"NVME Temp: {data.driveTemp}" )
-    print( f"Stats    : {data.driveStats}" )
     
     load = CPULoad()
     print( f"Number of CPU's = {len(load)}" )
-    for i in range(2):
+    for i in range(3):
         time.sleep( 1 )
         percentage : dict[str,float] = load.getPercentages()
         print( f"percentage: {percentage}" )
         for item in percentage:
             print( f"{item} : {percentage[item]:.02f}" )
     
-    test = multiDriveStat(["nvme0n1","sda","sdb"])
+    cpuinfo = CPUInfo()
+    print( f"CPU Temperature = {cpuinfo.temperature}" )
+    print( f"CPU Fan Speed  = {cpuinfo.CPUFanSpeed}" )
+    
+    test = multiDriveStat()
     print( test.drives )
     for drive in test.drives:
         print( f"Drive {drive} size is {test.driveSize( drive )}" )