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

cgi-bin/malp.rb

@@ -346,6 +346,56 @@ if cgi.params.key?("content")
       html << %(</div>)
     end
 
+    upses = info.select { |e| e["type"] == "ups" }
+    upses.each do |ups|
+      status = ups["status"].to_s
+      online = status.include?("ONLINE")
+      card_cls = online ? "ok" : "bad"
+
+      model = ups["model"] ? "APC " + CGI.escapeHTML(ups["model"]) : "UPS"
+
+      stats = []
+      stats << [online ? "ok" : "bad", CGI.escapeHTML(status)] unless status.empty?
+
+      if (charge = ups["charge"])
+        cls = charge >= 80 ? "ok" : charge >= 50 ? "warn" : "bad"
+        stats << [cls, "Charge #{charge.round}%"]
+      end
+      if (timeleft = ups["timeleft"])
+        cls = timeleft >= 10 ? "ok" : timeleft >= 5 ? "warn" : "bad"
+        stats << [cls, "#{timeleft.round(1)} min left"]
+      end
+      if (load = ups["load"])
+        cls = load >= 90 ? "bad" : load >= 70 ? "warn" : "ok"
+        stats << [cls, "Load #{load.round}%"]
+      end
+      if (lv = ups["line_voltage"])
+        stats << ["ok", "Line #{lv.round} V"]
+      end
+      if (bv = ups["battery_voltage"])
+        stats << ["ok", "Batt #{bv.round(1)} V"]
+      end
+
+      stats_html = stats.map { |c, txt|
+        %(<span class="stat #{c}">#{txt}</span>)
+      }.join
+      stats_block = stats.empty? ? "" :
+        %(<div class="drive-stats" style="margin-top:0.6rem;">#{stats_html}</div>)
+
+      html << %(<div>)
+      html << %(<div class="section-label">UPS</div>)
+      html << <<~HTML
+        <div class="card #{card_cls}">
+          <div class="card-header">
+            <span class="card-title">#{model}</span>
+            <span class="badge #{card_cls}">#{online ? "Online" : CGI.escapeHTML(status)}</span>
+          </div>
+          #{stats_block}
+        </div>
+      HTML
+      html << %(</div>)
+    end
+
     cgi.out("type" => "text/html", "charset" => "UTF-8") do
       html
     end