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annotate piecrust/resources/server/piecrust-debug-info.js @ 219:d7a548ebcd58

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serve: Add server sent events for showing pipeline errors in the debug window. The server can now run an endpoint that streams pipeline status, including errors or "fixed" statuses. As a result, I had to investigate using event-loop based server alternatives, before I figured out the correct flag to set in Werkzeug. Support for Gunicorn is therefore now possible, although disabled by default. I will come in handy though when proper support for CMS-mode is enabled.
author Ludovic Chabant <ludovic@chabant.com>
date Mon, 02 Feb 2015 08:34:44 -0800
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children 9612cfc6455a
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d7a548ebcd58 serve: Add server sent events for showing pipeline errors in the debug window.
Ludovic Chabant <ludovic@chabant.com>
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1 var eventSource = new EventSource("/__piecrust_debug/pipeline_status");
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3 //window.onbeforeunload = function(e) {
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4 // console.log("Disconnecting SSE.", e);
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5 // eventSource.close();
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6 //};
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8 eventSource.onerror = function(e) {
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9 console.log("Error with SSE, closing.", e);
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10 eventSource.close();
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11 };
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13 eventSource.addEventListener('pipeline_success', function(e) {
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14 var placeholder = document.getElementById('piecrust-debug-info-pipeline-status');
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15 //if (placeholder.firstChild !== null)
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16 placeholder.removeChild(placeholder.firstChild);
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17 });
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19 eventSource.addEventListener('pipeline_error', function(e) {
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20 var obj = JSON.parse(e.data);
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21
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22 var outer = document.createElement('div');
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23 outer.style = 'padding: 1em;';
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24 for (var i = 0; i < obj.assets.length; ++i) {
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25 var item = obj.assets[i];
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26 var markup = (
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27 '<p>Error processing: <span style="font-family: monospace;">' +
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28 item.path + '</span></p>\n' +
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29 '<ul>');
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30 for (var j = 0; j < item.errors.length; ++j) {
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31 markup += (
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32 '<li style="font-family: monospace;">' +
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33 item.errors[j] +
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34 '</li>\n');
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35 }
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36 markup += '</ul>\n';
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37 var entry = document.createElement('div');
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38 entry.innerHTML = markup;
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39 outer.appendChild(entry);
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40 }
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41
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42 var placeholder = document.getElementById('piecrust-debug-info-pipeline-status');
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43 placeholder.appendChild(outer);
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44 });
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