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logline output buffers rather than updating on every ws message

Browse source 
In builds with lots of output, trying to reload the page partway
through the build results in thousands of websocket messages (one
per line) that each update the DOM.  This can cause the browser to
freeze.  Instead, use requestAnimation frame to delay the DOM
updates.
This commit is contained in:
Michael Nutt 2014-03-01 19:51:14 -05:00
parent 77ff7971d3
commit 6e92e73a98
1 changed files with 30 additions and 7 deletions
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37
pkg/template/pages/repo_commit.html
View file

@ -133,16 +133,39 @@
outputWS.onopen = function () { console.log('output websocket open'); };
outputWS.onerror = function (e) { console.log('websocket error: ' + e); };
outputWS.onclose = function (e) { window.location.reload(); };
outputWS.onmessage = function (e) {
outputBox.innerHTML += formatLine(e.data);
if (window.autofollow) {
window.scrollTo(0, document.body.scrollHeight);
}
window.requestAnimationFrame = window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
function(callback, element) {
return window.setTimeout(function() {
callback(+new Date());
}, 1000 / 60);
};
var lineBuffer = "";
outputWS.onmessage = function (e) {
lineBuffer += formatLine(e.data);
};
{{ else }}
function updateScreen() {
if(lineBuffer.length > 0) {
outputBox.innerHTML += lineBuffer;
lineBuffer = '';
if (window.autofollow) {
window.scrollTo(0, document.body.scrollHeight);
}
}
requestAnimationFrame(updateScreen);
}
requestAnimationFrame(updateScreen);
{{ else }}
$.get("/{{ .Repo.Slug }}/commit/{{ .Commit.Hash }}/build/{{ .Build.Slug }}/out.txt", function( data ) {
$( "#stdout" ).html(formatLine(data));
});
{{ end }}
</script>
{{ end }}
{{ end }}