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comparison 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
parents
children 9612cfc6455a
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218:10f24c62b05b 219:d7a548ebcd58
1 var eventSource = new EventSource("/__piecrust_debug/pipeline_status");
2
3 //window.onbeforeunload = function(e) {
4 // console.log("Disconnecting SSE.", e);
5 // eventSource.close();
6 //};
7
8 eventSource.onerror = function(e) {
9 console.log("Error with SSE, closing.", e);
10 eventSource.close();
11 };
12
13 eventSource.addEventListener('pipeline_success', function(e) {
14 var placeholder = document.getElementById('piecrust-debug-info-pipeline-status');
15 //if (placeholder.firstChild !== null)
16 placeholder.removeChild(placeholder.firstChild);
17 });
18
19 eventSource.addEventListener('pipeline_error', function(e) {
20 var obj = JSON.parse(e.data);
21
22 var outer = document.createElement('div');
23 outer.style = 'padding: 1em;';
24 for (var i = 0; i < obj.assets.length; ++i) {
25 var item = obj.assets[i];
26 var markup = (
27 '<p>Error processing: <span style="font-family: monospace;">' +
28 item.path + '</span></p>\n' +
29 '<ul>');
30 for (var j = 0; j < item.errors.length; ++j) {
31 markup += (
32 '<li style="font-family: monospace;">' +
33 item.errors[j] +
34 '</li>\n');
35 }
36 markup += '</ul>\n';
37 var entry = document.createElement('div');
38 entry.innerHTML = markup;
39 outer.appendChild(entry);
40 }
41
42 var placeholder = document.getElementById('piecrust-debug-info-pipeline-status');
43 placeholder.appendChild(outer);
44 });
45