Add Server Info card

bin/malpd

@@ -166,6 +166,52 @@ def read_virtual_machines
   end
 end
 
+def read_server_info
+  info = { "type" => "server" }
+
+  if File.exist?("/etc/os-release")
+    File.readlines("/etc/os-release").each do |line|
+      if line =~ /^PRETTY_NAME="(.+)"$/
+        info["os_name"] = $1
+        break
+      end
+    end
+  end
+
+  out = `stat -c %W / 2>/dev/null`.strip
+  if out =~ /^\d+$/ && out.to_i > 0
+    info["install_date"] = Time.at(out.to_i).strftime("%Y-%m-%d")
+  elsif File.exist?("/etc/machine-id")
+    info["install_date"] = File.mtime("/etc/machine-id").strftime("%Y-%m-%d")
+  end
+
+  if File.exist?("/proc/cpuinfo")
+    cpuinfo = File.read("/proc/cpuinfo")
+    if cpuinfo =~ /^model name\s*:\s*(.+)$/
+      info["cpu_model"] = $1.strip
+    end
+    cores = cpuinfo.scan(/^processor\s*:/).size
+    info["cpu_cores"] = cores if cores > 0
+  end
+
+  if File.exist?("/proc/meminfo")
+    mem = {}
+    File.read("/proc/meminfo").each_line do |line|
+      if line =~ /^(\w+):\s+(\d+)/
+        mem[$1] = $2.to_i * 1024
+      end
+    end
+    if (total = mem["MemTotal"])
+      available = mem["MemAvailable"] ||
+        (mem["MemFree"].to_i + mem["Buffers"].to_i + mem["Cached"].to_i)
+      info["mem_total"] = total
+      info["mem_used"]  = total - available
+    end
+  end
+
+  info
+end
+
 def read_ups
   out = `apcaccess 2>/dev/null`
   return nil unless $?.success? && !out.empty?
@@ -232,6 +278,8 @@ def handle_info(conn)
   info.concat(read_filesystems)
   info.concat(read_virtual_machines)
 
+  info << read_server_info
+
   if (ups = read_ups)
     info << ups
   end

cgi-bin/malp.rb

@@ -112,9 +112,67 @@ if cgi.params.key?("content")
     drives = info.select { |e| e["type"] == "drive" }
     filesystems = info.select { |e| e["type"] == "filesystem" }
     vms = info.select { |e| e["type"] == "vm" }
+    server = info.find { |e| e["type"] == "server" }
 
     html << %(<div class="span-3">)
 
+    if server
+      html << %(<div class="section-label">Server</div>)
+      html << %(<div class="card ok"><div class="card-header"><span class="card-title">Server Info</span></div><div class="subitems">)
+
+      if server["os_name"]
+        html << <<~HTML
+          <div class="subitem">
+            <div class="subitem-left"><div class="dot ok"></div><span class="subitem-name">OS</span></div>
+            <span class="subitem-value ok">#{CGI.escapeHTML(server["os_name"])}</span>
+          </div>
+        HTML
+      end
+
+      if server["install_date"]
+        html << <<~HTML
+          <div class="subitem">
+            <div class="subitem-left"><div class="dot ok"></div><span class="subitem-name">Installed</span></div>
+            <span class="subitem-value ok">#{CGI.escapeHTML(server["install_date"])}</span>
+          </div>
+        HTML
+      end
+
+      cpu_model = server["cpu_model"]
+      cpu_cores = server["cpu_cores"]
+      if cpu_model || cpu_cores
+        cpu_text = [
+          cpu_model,
+          cpu_cores ? "#{cpu_cores} thread#{cpu_cores == 1 ? "" : "s"}" : nil
+        ].compact.join(" · ")
+        html << <<~HTML
+          <div class="subitem">
+            <div class="subitem-left"><div class="dot ok"></div><span class="subitem-name">CPU</span></div>
+            <span class="subitem-value ok">#{CGI.escapeHTML(cpu_text)}</span>
+          </div>
+        HTML
+      end
+
+      mem_total = server["mem_total"].to_i
+      mem_used  = server["mem_used"].to_i
+      if mem_total > 0
+        mem_pct_f = mem_used * 100.0 / mem_total
+        mem_pct   = mem_pct_f.round
+        mem_cls   = mem_pct_f >= 90 ? "bad" : mem_pct_f >= 75 ? "warn" : "ok"
+        html << <<~HTML
+          <div class="subitem" style="flex-direction:column;align-items:stretch;gap:0.35rem;">
+            <div style="display:flex;justify-content:space-between;align-items:center;">
+              <div class="subitem-left"><div class="dot #{mem_cls}"></div><span class="subitem-name">Memory</span></div>
+              <span class="subitem-value #{mem_cls}">#{mem_pct}% · #{CGI.escapeHTML(human_capacity(mem_used))} / #{CGI.escapeHTML(human_capacity(mem_total))}</span>
+            </div>
+            <div class="bar-track"><div class="bar-fill #{mem_cls}" style="width:#{mem_pct}%"></div></div>
+          </div>
+        HTML
+      end
+
+      html << %(</div></div>)
+    end
+
     if vms.any?
       running = vms.count { |v| v["state"].to_s == "running" }
       total = vms.size