[core] restructure to allow PIP packaging

OK - so I have to admit I *hate* the fact that PIP seems to require a
subdirectory named like the library.

But since the PIP package is something really nifty to have (thanks to
@tony again!!!), I updated the codebase to hopefully conform with what
PIP expects. Testruns so far look promising...

bumblebee_status/modules/contrib/smartstatus.py

@@ -0,0 +1,127 @@
+# -*- coding: UTF-8 -*-
+
+# smart function inspired by py-SMART https://github.com/freenas/py-SMART
+# under Copyright (C) 2015 Marc Herndon and GPL2
+
+"""Displays HDD smart status of different drives or all drives
+
+Parameters:
+    * smartstatus.display: how to display (defaults to 'combined', other choices: 'seperate' or 'singles')
+    * smartstatus.drives: in the case of singles which drives to display, separated comma list value, multiple accepted (defaults to 'sda', example:'sda,sdc')
+    * smartstatus.show_names: boolean in the form of "True" or "False" to show the name of the drives in the form of sda, sbd, combined or none at all. 
+"""
+
+import os
+
+import shutil
+
+import core.module
+import core.decorators
+
+import util.cli
+import util.format
+
+
+class Module(core.module.Module):
+    @core.decorators.every(minutes=5)
+    def __init__(self, config, theme):
+        super().__init__(config, theme, [])
+
+        self.devices = self.list_devices()
+        self.display = self.parameter("display", "combined")
+        self.drives = self.parameter("drives", "sda")
+        self.show_names = util.format.asbool(self.parameter("show_names", True))
+        self.create_widgets()
+
+    def create_widgets(self):
+        if self.display == "combined":
+            widget = self.add_widget()
+            widget.set("device", "combined")
+            widget.set("assessment", self.combined())
+            self.output(widget)
+        else:
+            for device in self.devices:
+                if self.display == "singles" and device not in self.drives:
+                    continue
+                widget = self.add_widget()
+                widget.set("device", device)
+                widget.set("assessment", self.smart(device))
+                self.output(widget)
+
+    def update(self):
+        for widget in self.widgets():
+            device = widget.get("device")
+            if device == "combined":
+                widget.set("assessment", self.combined())
+                self.output(widget)
+            else:
+                widget.set("assessment", self.smart(device))
+                self.output(widget)
+
+    def output(self, widget):
+        device = widget.get("device")
+        assessment = widget.get("assessment")
+        if self.show_names:
+            widget.full_text("{}: {}".format(device, assessment))
+        else:
+            widget.full_text("{}".format(assessment))
+
+    def state(self, widget):
+        states = []
+        assessment = widget.get("assessment")
+        if assessment == "Pre-fail":
+            states.append("warning")
+        if assessment == "Fail":
+            states.append("critical")
+        return states
+
+    def combined(self):
+        for device in self.devices:
+            result = self.smart(device)
+            if result == "Fail":
+                return "Fail"
+            if result == "Pre-fail":
+                return "Pre-fail"
+        return "OK"
+
+    def list_devices(self):
+        for (root, folders, files) in os.walk("/dev"):
+            if root == "/dev":
+                devices = {
+                    "".join(filter(lambda i: i.isdigit() == False, file))
+                    for file in files
+                    if "sd" in file
+                }
+                nvme = {
+                    file for file in files if ("nvme0n" in file and "p" not in file)
+                }
+                devices.update(nvme)
+                return devices
+
+    def smart(self, disk_name):
+        smartctl = shutil.which("smartctl")
+        assessment = None
+
+        output = util.cli.execute(
+            "sudo {} --health {}".format(smartctl, os.path.join("/dev/", disk_name))
+        )
+        output = output.split("\n")
+        line = output[4]
+        if "SMART" in line:
+            if any([i in line for i in ["PASSED", "OK"]]):
+                assessment = "OK"
+            else:
+                assessment = "Fail"
+
+        if assessment == "OK":
+            output = util.cli.execute(
+                "sudo {} -A {}".format(smartctl, os.path.join("/dev/", disk_name))
+            )
+            output = output.split("\n")
+            for line in output:
+                if "Pre-fail" in line:
+                    assessment = "Pre-fail"
+        return assessment
+
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4