NOISSUE Flatten gui and logic libraries into MultiMC

launcher/net/NetJob.cpp

@@ -0,0 +1,218 @@
+/* Copyright 2013-2021 MultiMC Contributors
+ *
+ * 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
+ *
+ *     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 "NetJob.h"
+#include "Download.h"
+
+#include <QDebug>
+
+void NetJob::partSucceeded(int index)
+{
+    // do progress. all slots are 1 in size at least
+    auto &slot = parts_progress[index];
+    partProgress(index, slot.total_progress, slot.total_progress);
+
+    m_doing.remove(index);
+    m_done.insert(index);
+    downloads[index].get()->disconnect(this);
+    startMoreParts();
+}
+
+void NetJob::partFailed(int index)
+{
+    m_doing.remove(index);
+    auto &slot = parts_progress[index];
+    if (slot.failures == 3)
+    {
+        m_failed.insert(index);
+    }
+    else
+    {
+        slot.failures++;
+        m_todo.enqueue(index);
+    }
+    downloads[index].get()->disconnect(this);
+    startMoreParts();
+}
+
+void NetJob::partAborted(int index)
+{
+    m_aborted = true;
+    m_doing.remove(index);
+    m_failed.insert(index);
+    downloads[index].get()->disconnect(this);
+    startMoreParts();
+}
+
+void NetJob::partProgress(int index, qint64 bytesReceived, qint64 bytesTotal)
+{
+    auto &slot = parts_progress[index];
+    slot.current_progress = bytesReceived;
+    slot.total_progress = bytesTotal;
+
+    int done = m_done.size();
+    int doing = m_doing.size();
+    int all = parts_progress.size();
+
+    qint64 bytesAll = 0;
+    qint64 bytesTotalAll = 0;
+    for(auto & partIdx: m_doing)
+    {
+        auto part = parts_progress[partIdx];
+        // do not count parts with unknown/nonsensical total size
+        if(part.total_progress <= 0)
+        {
+            continue;
+        }
+        bytesAll += part.current_progress;
+        bytesTotalAll += part.total_progress;
+    }
+
+    qint64 inprogress = (bytesTotalAll == 0) ? 0 : (bytesAll * 1000) / bytesTotalAll;
+    auto current = done * 1000 + doing * inprogress;
+    auto current_total = all * 1000;
+    // HACK: make sure it never jumps backwards.
+    // FAIL: This breaks if the size is not known (or is it something else?) and jumps to 1000, so if it is 1000 reset it to inprogress
+    if(m_current_progress == 1000) {
+        m_current_progress = inprogress;
+    }
+    if(m_current_progress > current)
+    {
+        current = m_current_progress;
+    }
+    m_current_progress = current;
+    setProgress(current, current_total);
+}
+
+void NetJob::executeTask()
+{
+    // hack that delays early failures so they can be caught easier
+    QMetaObject::invokeMethod(this, "startMoreParts", Qt::QueuedConnection);
+}
+
+void NetJob::startMoreParts()
+{
+    if(!isRunning())
+    {
+        // this actually makes sense. You can put running downloads into a NetJob and then not start it until much later.
+        return;
+    }
+    // OK. We are actively processing tasks, proceed.
+    // Check for final conditions if there's nothing in the queue.
+    if(!m_todo.size())
+    {
+        if(!m_doing.size())
+        {
+            if(!m_failed.size())
+            {
+                emitSucceeded();
+            }
+            else if(m_aborted)
+            {
+                emitAborted();
+            }
+            else
+            {
+                emitFailed(tr("Job '%1' failed to process:\n%2").arg(objectName()).arg(getFailedFiles().join("\n")));
+            }
+        }
+        return;
+    }
+    // There's work to do, try to start more parts.
+    while (m_doing.size() < 6)
+    {
+        if(!m_todo.size())
+            return;
+        int doThis = m_todo.dequeue();
+        m_doing.insert(doThis);
+        auto part = downloads[doThis];
+        // connect signals :D
+        connect(part.get(), SIGNAL(succeeded(int)), SLOT(partSucceeded(int)));
+        connect(part.get(), SIGNAL(failed(int)), SLOT(partFailed(int)));
+        connect(part.get(), SIGNAL(aborted(int)), SLOT(partAborted(int)));
+        connect(part.get(), SIGNAL(netActionProgress(int, qint64, qint64)),
+                SLOT(partProgress(int, qint64, qint64)));
+        part->start();
+    }
+}
+
+
+QStringList NetJob::getFailedFiles()
+{
+    QStringList failed;
+    for (auto index: m_failed)
+    {
+        failed.push_back(downloads[index]->url().toString());
+    }
+    failed.sort();
+    return failed;
+}
+
+bool NetJob::canAbort() const
+{
+    bool canFullyAbort = true;
+    // can abort the waiting?
+    for(auto index: m_todo)
+    {
+        auto part = downloads[index];
+        canFullyAbort &= part->canAbort();
+    }
+    // can abort the active?
+    for(auto index: m_doing)
+    {
+        auto part = downloads[index];
+        canFullyAbort &= part->canAbort();
+    }
+    return canFullyAbort;
+}
+
+bool NetJob::abort()
+{
+    bool fullyAborted = true;
+    // fail all waiting
+    m_failed.unite(m_todo.toSet());
+    m_todo.clear();
+    // abort active
+    auto toKill = m_doing.toList();
+    for(auto index: toKill)
+    {
+        auto part = downloads[index];
+        fullyAborted &= part->abort();
+    }
+    return fullyAborted;
+}
+
+bool NetJob::addNetAction(NetActionPtr action)
+{
+    action->m_index_within_job = downloads.size();
+    downloads.append(action);
+    part_info pi;
+    parts_progress.append(pi);
+    partProgress(parts_progress.count() - 1, action->currentProgress(), action->totalProgress());
+
+    if(action->isRunning())
+    {
+        connect(action.get(), SIGNAL(succeeded(int)), SLOT(partSucceeded(int)));
+        connect(action.get(), SIGNAL(failed(int)), SLOT(partFailed(int)));
+        connect(action.get(), SIGNAL(netActionProgress(int, qint64, qint64)), SLOT(partProgress(int, qint64, qint64)));
+    }
+    else
+    {
+        m_todo.append(parts_progress.size() - 1);
+    }
+    return true;
+}
+
+NetJob::~NetJob() = default;