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Cache the versions response in local storage to reduce network activity

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[ci-skip]
This commit is contained in:
Jose Diaz-Gonzalez
2016-03-08 21:35:56 -05:00
parent ec2a21c766
commit cf77ee1d2a
1 changed files with 48 additions and 23 deletions
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71
docs/template.html
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@@ -233,6 +233,21 @@
}
};
var ls2 = {
save : function(key, jsonData, expirationMS) {
if (typeof (Storage) == "undefined") { return false; }
var record = {value: JSON.stringify(jsonData), timestamp: new Date().getTime()/1000 + expirationMS}
localStorage.setItem(key, JSON.stringify(record));
return jsonData;
},
load : function(key) {
if (typeof (Storage) == "undefined") { return false; }
var record = JSON.parse(localStorage.getItem(key));
if (!record){return false;}
return (new Date().getTime()/1000 < record.timestamp && JSON.parse(record.value));
}
};
Array.prototype.forEach.call(blockquotes, function (el, i) {
if (el.innerHTML.indexOf('New as of') !== -1) {
addClass(el, 'new-as-of');
@@ -280,7 +295,6 @@
ref = 'dokku';
versionName = 'master';
}
console.log(currentVersion, versionName);
a.setAttribute('href', "/" + ref + "/" + localPath);
a.appendChild(document.createTextNode(versionName));
@@ -294,34 +308,45 @@
versionList.appendChild(dd);
};
var request = new XMLHttpRequest();
request.open('GET', '/dokku/assets/versions.json', true);
request.setRequestHeader("Cache-Control", "no-cache, no-store");
request.onload = function() {
if (request.status >= 200 && request.status < 400) {
versions = []
var data = JSON.parse(request.responseText);
for (var key in data['max-versions']) {
if (!data['max-versions'].hasOwnProperty(key)) {
continue;
}
versions = parseVersions(data['max-versions'][key], versions);
var processVersions = function(data) {
var versions = [];
for (var key in data['max-versions']) {
if (!data['max-versions'].hasOwnProperty(key)) {
continue;
}
addVersionLink('master');
Array.prototype.forEach.call(versions, function (version, i) {
addVersionLink(version);
});
versions = parseVersions(data['max-versions'][key], versions);
}
addVersionLink('master');
Array.prototype.forEach.call(versions, function (version, i) {
addVersionLink(version);
});
};
request.onerror = function() {
// There was a connection error of some sort
};
data = ls2.load('max-versions');
if (!data) {
var request = new XMLHttpRequest();
request.open('GET', '/dokku/assets/versions.json', true);
request.setRequestHeader("Cache-Control", "no-cache, no-store");
request.send();
request.onload = function() {
if (request.status >= 200 && request.status < 400) {
var data = JSON.parse(request.responseText);
// store for 1 day
ls2.save('max-versions', data, 86400);
processVersions(data);
}
};
request.onerror = function() {
// There was a connection error of some sort
};
request.send();
} else {
processVersions(data);
}
});
</script>
</body>