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<!doctype html>
<html>
  <head>
    <title>dhcp leases</title>
    <meta charset="utf-8" />
    <script src="/lib/polymer/0.8/webcomponentsjs/webcomponents-lite.min.js"></script>
    <script src="/lib/underscore-1.5.2.min.js"></script>
    <script src="/lib/n3/0.4.2/n3-browser-drewp.js"></script>
    <link rel="import" href="/lib/polymer/0.8/iron-ajax/iron-ajax.html">
  </head>
  <body>

    <script>
     Polymer({
       is: "trig-store",
       prefixes: {
         room: 'http://projects.bigasterisk.com/room/',
         rdfs: 'http://www.w3.org/2000/01/rdf-schema#'
       },
       properties: {
         trigInput: {
           type: String,
           observer: 'trigInputChanged'
         },
         store: {
           // set to a new store each time trig is updated
           type: Object,
           default: N3.Store(),
           notify: true
         }
       },
       trigInputChanged: function(trig, _old) {
         var newStore = N3.Store();
         newStore.addPrefixes(this.prefixes);
         var parser = N3.Parser({format: 'TriG'});
         parser.parse(trig, function(error, triple, prefixes) {
           if (error !== null) {
             console.log(error);
             return;
           }
           newStore.addTriple(triple);
         }.bind(this));
         console.log("filled store with", newStore.size, "triples");
         this.store = newStore;

       }
     })
    </script>

    <h1>Active dhcp leases</h1>

    <dom-module id="dhcp-table">
      <template>
        <iron-ajax auto url="graph"
                   params='{"pruneExpired": "true"}'
                   handle-as="text"
                   last-response="{{ajaxResponse}}"></iron-ajax>
        <trig-store id="ts" trig-input="{{ajaxResponse}}"></trig-store>

        <table>
          <template is="x-repeat" items="{{devices}}">
            <tr><td>{{item.dhcpHostname}}</td> <td>{{item.ip}}</td></tr>
          </template>
        </table>
      </template>
    </dom-module>

    <script>
     Polymer({
       is: "dhcp-table",
       ready: function() {
         this.$.ts.addEventListener('store-changed', this.storeChanged.bind(this));
         this.devices = [];
       },
       storeChanged: function(ev) {
         var store = ev.detail.value;
         var find = function(s, p, o) { return store.findAllGraphs(s, p, o); };
         var findOne = function(s, p, o) {
           var rows = find(s, p, o);
           return rows[0];
         };

         this.devices = [];

         find(null, "room:dhcpHostname", null).forEach(function(row) {
           var out = {dhcpHostname: N3.Util.getLiteralValue(row.object)}
           var lease = findOne(null, "room:ethernetAddress",
                               row.subject).subject;
           var ip = findOne(lease, "room:assignedIp", null).object;
           out.ip = N3.Util.getLiteralValue(
             findOne(ip, "rdfs:label", null).object);
           this.devices.push(out);
         }.bind(this));
         this.devices = _.sortBy(this.devices, 'dhcpHostname');
       }
     });
    </script>
    <dhcp-table></dhcp-table>
  </body>
</html>
author	drewp <drewp@bigasterisk.com>
date	Sun, 30 Aug 2015 01:19:29 -0700
parents	76bb0bf74bd1
children	9ce1214e4534