implemented the smart plugin

Gemfile

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+source "https://rubygems.org"
+
+# Declare your gem's dependencies in #{yourplugin}.gemspec.
+# Bundler will treat runtime dependencies like base dependencies, and
+# development dependencies will be added by default to the :development group.
+gemspec
+
+# assume jquery-rails will be used
+gem "jquery-rails"
+

LICENSE

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+Your plugin license!
+
+Copyright 2013 Amahi, http://www.amahi.org
+
+This software is licensed under the AGPL v3
+https://www.gnu.org/licenses/agpl
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.rdoc

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+= Amahi plugin SMART Status
+
+SMART Status for the Amahi platform

Rakefile

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+#!/usr/bin/env rake
+begin
+  require 'bundler/setup'
+rescue LoadError
+  puts 'You must `gem install bundler` and `bundle install` to run rake tasks'
+end
+begin
+  require 'rdoc/task'
+rescue LoadError
+  require 'rdoc/rdoc'
+  require 'rake/rdoctask'
+  RDoc::Task = Rake::RDocTask
+end
+
+RDoc::Task.new(:rdoc) do |rdoc|
+  rdoc.rdoc_dir = 'rdoc'
+  rdoc.title    = 'Amahi Plugin'
+  rdoc.options << '--line-numbers'
+  rdoc.rdoc_files.include('README.rdoc')
+  rdoc.rdoc_files.include('lib/**/*.rb')
+end
+
+# APP_RAKEFILE = File.expand_path("../../../Rakefile", __FILE__)
+# load 'rails/tasks/engine.rake'
+
+Bundler::GemHelper.install_tasks
+
+require 'rake/testtask'
+
+Rake::TestTask.new(:test) do |t|
+  t.libs << 'lib'
+  t.libs << 'test'
+  t.pattern = 'test/**/*_test.rb'
+  t.verbose = false
+end
+
+
+task :default => :test

app/controllers/smart_statuses_controller.rb

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+require "smart_statuses/smart_test_util.rb"
+
+class SmartStatusesController < ApplicationController
+	before_action :admin_required
+
+	def index
+		@page_title = t('smart_status')
+		unless use_sample_data?
+			@tests = SmartTestUtil.stats
+		else
+			# NOTE: this is to get sample fake data in development
+			@tests = SmartTestUtil.sample_stats
+		end
+	end
+end

app/helpers/application_helper.rb

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+module ApplicationHelper
+end

app/views/smart_statuses/index.html.slim

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+- unless @tests.size>0
+	div.no-content
+	  strong
+	    | No devices found
+- else
+	.settings-table#tests-table
+	  table.settings.table
+	    thead
+	      tr
+	        th.settings-col1= t 'model'
+	        th= t 'device'
+	        th
+	          = t 'health_check'
+	    tbody class="#{@tests.size}"
+	      - @tests.each do | test |
+	        tr class=cycle("odd", "even")
+	          td.settings-col1 = test[:model]
+	          td = test[:device]
+	          td
+	            span[style="color: #{test[:color]}"]
+	              = test[:health_check]            

config/amahi-plugin.yml

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+# human readable name (no localization supported yet)
+name: SmartStatus
+# class to be mounted
+class: SmartStatuses
+# root url where this plugin will be mounted
+url: /tab/smart_statuses

config/initializers/plugin_init.rb

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+# plugin initialization
+t = Tab.new("smart_statuses", "smart_statuses", "/tab/smart_statuses")
+# add any subtabs with what you need. params are controller and the label, for example
+t.add("index", "details")

config/locales/en.yml

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+# Localization in English
+
+'en':
+  # put here your string symbols and translations
+  hello_world: Hello World! (yay for the Amahi plugins!)
+  smart_status: SMART Status
+  health_check: Basic Health Check

config/routes.rb

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+SmartStatuses::Engine.routes.draw do
+	# root of the plugin
+        root :to => 'smart_statuses#index'
+end

db/sample-data/smartctl-output-sample1.txt

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+smartctl 6.5 2016-05-07 r4318 [x86_64-linux-4.16.16-200.fc27.x86_64] (local build)
+Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
+=== START OF READ SMART DATA SECTION ===
+SMART overall-health self-assessment test result: PASSED

db/sample-data/smartctl-output-sample2.txt

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+smartctl 6.5 2016-05-07 r4318 [x86_64-linux-4.16.16-200.fc27.x86_64] (local build)
+Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
+=== START OF READ SMART DATA SECTION ===
+SMART overall-health self-assessment test result: FAILED!
+Drive failure expected in less than 24 hours. SAVE ALL DATA.
+Failed Attributes:
+ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
+  3 Spin_Up_Time            0x0007   001   001   011    Pre-fail  Always   FAILING_NOW 60340

lib/smart_statuses.rb

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+require "smart_statuses/version"
+require "smart_statuses/engine"
+
+module SmartStatus
+	class Lib
+		# the code for your plugin library here
+		# or inside lib/smart_statuses/whatever.rb and required here
+	end
+end

lib/smart_statuses/engine.rb

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+module SmartStatuses
+	class Engine < ::Rails::Engine
+		# NOTE: do not isolate the namespace unless you really really
+		# want to adjust all your controllers views, etc., making Amahi's
+		# platform hard to reach from here
+		# isolate_namespace SmartStatus
+	end
+end

lib/smart_statuses/smart_test_util.rb

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+class SmartTestUtil
+	class << self
+		def stats
+			@disks = DiskUtils.stats
+			response = []
+			@disks.each_with_index do |disk, index|
+				status = read_smart_status(create_file_and_get_path(disk[:device]))
+				color = (status=="PASSED")? "green": "red";
+				response << { model: disk[:model], device: disk[:device], 
+					health_check: status, color: color }
+			end
+			return response
+		end
+
+		def create_file_and_get_path(device)
+			# create the status file and return file path
+			# need to implement for production
+			get_sample_file_path(rand(2))
+		end
+
+		def sample_stats
+			@disks = SampleData.load('disks')
+			response = []
+			@disks.each_with_index do |disk, index|
+				status = read_smart_status(get_sample_file_path(index))
+				color = (status=="PASSED")? "green": "red";
+				response << { model: disk[:model], device: disk[:device], 
+					health_check: status, color: color }
+			end
+			return response
+		end
+
+		def get_sample_file_path(index)
+			if index.blank? or index%2 == 0
+				Rails.root+Dir["plugins/*smart_statuses/db/sample-data/smartctl-output-sample1.txt"][0]
+			else
+				Rails.root+Dir["plugins/*smart_statuses/db/sample-data/smartctl-output-sample2.txt"][0]
+			end
+		end
+
+		def read_smart_status(filepath)			
+			return nil unless File.exists?(filepath)
+			IO.readlines(filepath)[3][50..-1]
+		end
+	end
+end

lib/smart_statuses/version.rb

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+module SmartStatus
+	VERSION = "0.0.1"
+end

lib/tasks/smart_statuses.rake

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+# desc "Explaining what the task does"
+# task :smart_statuses do
+#   # Task goes here
+# end

script/rails

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+#!/usr/bin/env ruby
+
+ENGINE_ROOT = File.expand_path('../..', __FILE__)
+ENGINE_PATH = File.expand_path('../../lib/smart_statuses/engine', __FILE__)
+require 'rails/all'
+require 'rails/engine/commands'

smart_statuses.gemspec

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+$:.push File.expand_path("../lib", __FILE__)
+
+# Maintain your gem's version:
+require "smart_statuses/version"
+
+# Describe your gem and declare its dependencies:
+Gem::Specification.new do |s|
+  s.name        = "smart_statuses"
+  s.version     = SmartStatus::VERSION
+  s.authors     = "Sukhbir Singh"
+  s.email       = ["[email protected]"]
+  s.homepage    = "https://www.amahi.org/apps/smart-status"
+  s.license     = "AGPLv3"
+  s.summary     = %{Monitor the S.M.A.R.T. status of your drives with this Amahi plugin.}
+  s.description = %{This is an Amahi 11 platform plugin that uses S.M.A.R.T. tools to monitor the status of all drives in an Amahi server.}
+
+  s.files = Dir["{app,config,db,lib}/**/*"] + ["LICENSE", "Rakefile", "README.rdoc"]
+  s.test_files = Dir["test/**/*"]
+
+  s.add_dependency "rails", "~> 3.2.12"
+  s.add_dependency "jquery-rails"
+
+  s.add_development_dependency "sqlite3"
+end
+