Add UPS status card

bin/malpd

@@ -166,6 +166,43 @@ def read_virtual_machines
   end
 end
 
+def read_ups
+  out = `apcaccess 2>/dev/null`
+  return nil unless $?.success? && !out.empty?
+
+  raw = {}
+  out.each_line do |line|
+    next unless line.include?(":")
+    key, value = line.split(":", 2).map(&:strip)
+    raw[key] = value
+  end
+
+  result = { "type" => "ups" }
+  result["model"] = raw["MODEL"] if raw["MODEL"]
+  result["status"] = raw["STATUS"] if raw["STATUS"]
+
+  if raw["BCHARGE"]
+    result["charge"] = raw["BCHARGE"].to_f
+  end
+  if raw["TIMELEFT"]
+    result["timeleft"] = raw["TIMELEFT"].to_f
+  end
+  if raw["LINEV"]
+    result["line_voltage"] = raw["LINEV"].to_f
+  end
+  if raw["LOADPCT"]
+    result["load"] = raw["LOADPCT"].to_f
+  end
+  if raw["NOMBATTV"]
+    result["battery_voltage_nom"] = raw["NOMBATTV"].to_f
+  end
+  if raw["BATTV"]
+    result["battery_voltage"] = raw["BATTV"].to_f
+  end
+
+  result
+end
+
 def handle_info(conn)
   info = []
 
@@ -195,6 +232,10 @@ def handle_info(conn)
   info.concat(read_filesystems)
   info.concat(read_virtual_machines)
 
+  if (ups = read_ups)
+    info << ups
+  end
+
   if conn
     conn.puts JSON.generate(info)
   else