pollymc/launcher/minecraft/MinecraftUpdate.cpp

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/* Copyright 2013-2021 MultiMC Contributors
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*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
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* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "MinecraftUpdate.h"
#include "MinecraftInstance.h"
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#include <QFile>
#include <QFileInfo>
#include <QTextStream>
#include <QDataStream>
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#include "BaseInstance.h"
#include "minecraft/PackProfile.h"
#include "minecraft/Library.h"
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#include <FileSystem.h>
#include "update/FoldersTask.h"
#include "update/LibrariesTask.h"
#include "update/FMLLibrariesTask.h"
#include "update/AssetUpdateTask.h"
#include <meta/Index.h>
#include <meta/Version.h>
MinecraftUpdate::MinecraftUpdate(MinecraftInstance *inst, QObject *parent) : Task(parent), m_inst(inst)
{
}
void MinecraftUpdate::executeTask()
{
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m_tasks.clear();
// create folders
{
m_tasks.append(new FoldersTask(m_inst));
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}
// add metadata update task if necessary
{
auto components = m_inst->getPackProfile();
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components->reload(Net::Mode::Online);
auto task = components->getCurrentTask();
if(task)
{
m_tasks.append(task);
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}
}
// libraries download
{
m_tasks.append(new LibrariesTask(m_inst));
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}
// FML libraries download and copy into the instance
{
m_tasks.append(new FMLLibrariesTask(m_inst));
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}
// assets update
{
m_tasks.append(new AssetUpdateTask(m_inst));
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}
if(!m_preFailure.isEmpty())
{
emitFailed(m_preFailure);
return;
}
next();
}
void MinecraftUpdate::next()
{
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if(m_abort)
{
emitFailed(tr("Aborted by user."));
return;
}
if(m_failed_out_of_order)
{
emitFailed(m_fail_reason);
return;
}
m_currentTask ++;
if(m_currentTask > 0)
{
auto task = m_tasks[m_currentTask - 1];
disconnect(task.get(), &Task::succeeded, this, &MinecraftUpdate::subtaskSucceeded);
disconnect(task.get(), &Task::failed, this, &MinecraftUpdate::subtaskFailed);
disconnect(task.get(), &Task::aborted, this, &Task::abort);
disconnect(task.get(), &Task::progress, this, &MinecraftUpdate::progress);
disconnect(task.get(), &Task::status, this, &MinecraftUpdate::setStatus);
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}
if(m_currentTask == m_tasks.size())
{
emitSucceeded();
return;
}
auto task = m_tasks[m_currentTask];
// if the task is already finished by the time we look at it, skip it
if(task->isFinished())
{
qCritical() << "MinecraftUpdate: Skipping finished subtask" << m_currentTask << ":" << task.get();
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next();
}
connect(task.get(), &Task::succeeded, this, &MinecraftUpdate::subtaskSucceeded);
connect(task.get(), &Task::failed, this, &MinecraftUpdate::subtaskFailed);
connect(task.get(), &Task::aborted, this, &Task::abort);
connect(task.get(), &Task::progress, this, &MinecraftUpdate::progress);
connect(task.get(), &Task::status, this, &MinecraftUpdate::setStatus);
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// if the task is already running, do not start it again
if(!task->isRunning())
{
task->start();
}
}
void MinecraftUpdate::subtaskSucceeded()
{
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if(isFinished())
{
qCritical() << "MinecraftUpdate: Subtask" << sender() << "succeeded, but work was already done!";
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return;
}
auto senderTask = QObject::sender();
auto currentTask = m_tasks[m_currentTask].get();
if(senderTask != currentTask)
{
qDebug() << "MinecraftUpdate: Subtask" << sender() << "succeeded out of order.";
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return;
}
next();
}
void MinecraftUpdate::subtaskFailed(QString error)
{
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if(isFinished())
{
qCritical() << "MinecraftUpdate: Subtask" << sender() << "failed, but work was already done!";
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return;
}
auto senderTask = QObject::sender();
auto currentTask = m_tasks[m_currentTask].get();
if(senderTask != currentTask)
{
qDebug() << "MinecraftUpdate: Subtask" << sender() << "failed out of order.";
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m_failed_out_of_order = true;
m_fail_reason = error;
return;
}
emitFailed(error);
}
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bool MinecraftUpdate::abort()
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{
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if(!m_abort)
{
m_abort = true;
auto task = m_tasks[m_currentTask];
if(task->canAbort())
{
return task->abort();
}
}
return true;
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}
bool MinecraftUpdate::canAbort() const
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{
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return true;
}