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79 lines
2.8 KiB
C++
79 lines
2.8 KiB
C++
//
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// ScriptCache.cpp
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// libraries/script-engine/src
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//
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// Created by Brad Hefta-Gaub on 2015-03-30
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// Copyright 2015 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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#include <QCoreApplication>
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#include <QEventLoop>
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#include <QNetworkAccessManager>
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#include <QNetworkConfiguration>
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#include <QNetworkReply>
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#include <QObject>
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#include <NetworkAccessManager.h>
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#include <SharedUtil.h>
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#include "ScriptEngineLogging.h"
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#include "ScriptCache.h"
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ScriptCache::ScriptCache(QObject* parent) {
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// nothing to do here...
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}
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QString ScriptCache::getScript(const QUrl& url, ScriptUser* scriptUser, bool& isPending) {
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QString scriptContents;
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if (_scriptCache.contains(url)) {
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qCDebug(scriptengine) << "Found script in cache:" << url.toString();
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scriptContents = _scriptCache[url];
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scriptUser->scriptContentsAvailable(url, scriptContents);
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isPending = false;
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} else {
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isPending = true;
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bool alreadyWaiting = _scriptUsers.contains(url);
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_scriptUsers.insert(url, scriptUser);
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if (alreadyWaiting) {
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qCDebug(scriptengine) << "Already downloading script at:" << url.toString();
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} else {
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QNetworkAccessManager& networkAccessManager = NetworkAccessManager::getInstance();
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QNetworkRequest networkRequest = QNetworkRequest(url);
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networkRequest.setHeader(QNetworkRequest::UserAgentHeader, HIGH_FIDELITY_USER_AGENT);
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qCDebug(scriptengine) << "Downloading script at" << url.toString();
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QNetworkReply* reply = networkAccessManager.get(networkRequest);
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connect(reply, &QNetworkReply::finished, this, &ScriptCache::scriptDownloaded);
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}
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}
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return scriptContents;
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}
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void ScriptCache::scriptDownloaded() {
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QNetworkReply* reply = qobject_cast<QNetworkReply*>(sender());
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QUrl url = reply->url();
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QList<ScriptUser*> scriptUsers = _scriptUsers.values(url);
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_scriptUsers.remove(url);
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if (reply->error() == QNetworkReply::NoError && reply->attribute(QNetworkRequest::HttpStatusCodeAttribute) == 200) {
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_scriptCache[url] = reply->readAll();
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qCDebug(scriptengine) << "Done downloading script at:" << url.toString();
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foreach(ScriptUser* user, scriptUsers) {
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user->scriptContentsAvailable(url, _scriptCache[url]);
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}
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} else {
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qCWarning(scriptengine) << "Error loading script from URL " << reply->url().toString()
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<< "- HTTP status code is" << reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt()
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<< "and error from QNetworkReply is" << reply->errorString();
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foreach(ScriptUser* user, scriptUsers) {
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user->errorInLoadingScript(url);
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}
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}
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reply->deleteLater();
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}
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