705 lines
22 KiB
C++
705 lines
22 KiB
C++
#include "ComponentUpdateTask.h"
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#include "PackProfile_p.h"
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#include "PackProfile.h"
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#include "Component.h"
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#include <Env.h>
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#include <meta/Index.h>
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#include <meta/VersionList.h>
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#include <meta/Version.h>
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#include "ComponentUpdateTask_p.h"
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#include <cassert>
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#include <Version.h>
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#include "net/Mode.h"
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#include "OneSixVersionFormat.h"
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/*
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* This is responsible for loading the components of a component list AND resolving dependency issues between them
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*/
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/*
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* FIXME: the 'one shot async task' nature of this does not fit the intended usage
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* Really, it should be a reactor/state machine that receives input from the application
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* and dynamically adapts to changing requirements...
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*
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* The reactor should be the only entry into manipulating the PackProfile.
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* See: https://en.wikipedia.org/wiki/Reactor_pattern
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*/
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/*
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* Or make this operate on a snapshot of the PackProfile state, then merge results in as long as the snapshot and PackProfile didn't change?
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* If the component list changes, start over.
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*/
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ComponentUpdateTask::ComponentUpdateTask(Mode mode, Net::Mode netmode, PackProfile* list, QObject* parent)
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: Task(parent)
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{
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d.reset(new ComponentUpdateTaskData);
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d->m_list = list;
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d->mode = mode;
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d->netmode = netmode;
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}
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ComponentUpdateTask::~ComponentUpdateTask()
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{
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}
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void ComponentUpdateTask::executeTask()
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{
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qDebug() << "Loading components";
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loadComponents();
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}
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namespace
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{
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enum class LoadResult
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{
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LoadedLocal,
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RequiresRemote,
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Failed
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};
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LoadResult composeLoadResult(LoadResult a, LoadResult b)
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{
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if (a < b)
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{
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return b;
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}
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return a;
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}
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static LoadResult loadComponent(ComponentPtr component, shared_qobject_ptr<Task>& loadTask, Net::Mode netmode)
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{
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if(component->m_loaded)
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{
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qDebug() << component->getName() << "is already loaded";
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return LoadResult::LoadedLocal;
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}
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LoadResult result = LoadResult::Failed;
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auto customPatchFilename = component->getFilename();
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if(QFile::exists(customPatchFilename))
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{
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// if local file exists...
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// check for uid problems inside...
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bool fileChanged = false;
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auto file = ProfileUtils::parseJsonFile(QFileInfo(customPatchFilename), false);
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if(file->uid != component->m_uid)
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{
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file->uid = component->m_uid;
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fileChanged = true;
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}
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if(fileChanged)
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{
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// FIXME: @QUALITY do not ignore return value
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ProfileUtils::saveJsonFile(OneSixVersionFormat::versionFileToJson(file), customPatchFilename);
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}
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component->m_file = file;
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component->m_loaded = true;
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result = LoadResult::LoadedLocal;
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}
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else
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{
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auto metaVersion = ENV.metadataIndex()->get(component->m_uid, component->m_version);
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component->m_metaVersion = metaVersion;
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if(metaVersion->isLoaded())
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{
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component->m_loaded = true;
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result = LoadResult::LoadedLocal;
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}
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else
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{
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metaVersion->load(netmode);
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loadTask = metaVersion->getCurrentTask();
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if(loadTask)
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result = LoadResult::RequiresRemote;
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else if (metaVersion->isLoaded())
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result = LoadResult::LoadedLocal;
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else
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result = LoadResult::Failed;
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}
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}
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return result;
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}
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// FIXME: dead code. determine if this can still be useful?
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/*
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static LoadResult loadPackProfile(ComponentPtr component, shared_qobject_ptr<Task>& loadTask, Net::Mode netmode)
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{
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if(component->m_loaded)
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{
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qDebug() << component->getName() << "is already loaded";
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return LoadResult::LoadedLocal;
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}
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LoadResult result = LoadResult::Failed;
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auto metaList = ENV.metadataIndex()->get(component->m_uid);
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if(metaList->isLoaded())
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{
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component->m_loaded = true;
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result = LoadResult::LoadedLocal;
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}
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else
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{
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metaList->load(netmode);
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loadTask = metaList->getCurrentTask();
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result = LoadResult::RequiresRemote;
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}
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return result;
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}
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*/
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static LoadResult loadIndex(shared_qobject_ptr<Task>& loadTask, Net::Mode netmode)
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{
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// FIXME: DECIDE. do we want to run the update task anyway?
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if(ENV.metadataIndex()->isLoaded())
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{
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qDebug() << "Index is already loaded";
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return LoadResult::LoadedLocal;
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}
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ENV.metadataIndex()->load(netmode);
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loadTask = ENV.metadataIndex()->getCurrentTask();
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if(loadTask)
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{
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return LoadResult::RequiresRemote;
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}
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// FIXME: this is assuming the load succeeded... did it really?
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return LoadResult::LoadedLocal;
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}
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}
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void ComponentUpdateTask::loadComponents()
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{
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LoadResult result = LoadResult::LoadedLocal;
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size_t taskIndex = 0;
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size_t componentIndex = 0;
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d->remoteLoadSuccessful = true;
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// load the main index (it is needed to determine if components can revert)
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{
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// FIXME: tear out as a method? or lambda?
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shared_qobject_ptr<Task> indexLoadTask;
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auto singleResult = loadIndex(indexLoadTask, d->netmode);
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result = composeLoadResult(result, singleResult);
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if(indexLoadTask)
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{
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qDebug() << "Remote loading is being run for metadata index";
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RemoteLoadStatus status;
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status.type = RemoteLoadStatus::Type::Index;
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d->remoteLoadStatusList.append(status);
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connect(indexLoadTask.get(), &Task::succeeded, [=]()
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{
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remoteLoadSucceeded(taskIndex);
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});
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connect(indexLoadTask.get(), &Task::failed, [=](const QString & error)
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{
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remoteLoadFailed(taskIndex, error);
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});
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taskIndex++;
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}
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}
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// load all the components OR their lists...
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for (auto component: d->m_list->d->components)
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{
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shared_qobject_ptr<Task> loadTask;
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LoadResult singleResult;
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RemoteLoadStatus::Type loadType;
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// FIXME: to do this right, we need to load the lists and decide on which versions to use during dependency resolution. For now, ignore all that...
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#if 0
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switch(d->mode)
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{
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case Mode::Launch:
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{
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singleResult = loadComponent(component, loadTask, d->netmode);
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loadType = RemoteLoadStatus::Type::Version;
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break;
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}
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case Mode::Resolution:
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{
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singleResult = loadPackProfile(component, loadTask, d->netmode);
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loadType = RemoteLoadStatus::Type::List;
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break;
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}
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}
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#else
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singleResult = loadComponent(component, loadTask, d->netmode);
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loadType = RemoteLoadStatus::Type::Version;
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#endif
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if(singleResult == LoadResult::LoadedLocal)
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{
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component->updateCachedData();
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}
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result = composeLoadResult(result, singleResult);
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if (loadTask)
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{
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qDebug() << "Remote loading is being run for" << component->getName();
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connect(loadTask.get(), &Task::succeeded, [=]()
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{
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remoteLoadSucceeded(taskIndex);
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});
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connect(loadTask.get(), &Task::failed, [=](const QString & error)
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{
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remoteLoadFailed(taskIndex, error);
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});
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RemoteLoadStatus status;
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status.type = loadType;
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status.PackProfileIndex = componentIndex;
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d->remoteLoadStatusList.append(status);
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taskIndex++;
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}
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componentIndex++;
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}
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d->remoteTasksInProgress = taskIndex;
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switch(result)
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{
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case LoadResult::LoadedLocal:
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{
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// Everything got loaded. Advance to dependency resolution.
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resolveDependencies(d->mode == Mode::Launch || d->netmode == Net::Mode::Offline);
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break;
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}
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case LoadResult::RequiresRemote:
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{
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// we wait for signals.
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break;
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}
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case LoadResult::Failed:
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{
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emitFailed(tr("Some component metadata load tasks failed."));
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break;
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}
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}
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}
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namespace
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{
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struct RequireEx : public Meta::Require
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{
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size_t indexOfFirstDependee = 0;
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};
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struct RequireCompositionResult
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{
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bool ok;
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RequireEx outcome;
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};
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using RequireExSet = std::set<RequireEx>;
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}
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static RequireCompositionResult composeRequirement(const RequireEx & a, const RequireEx & b)
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{
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assert(a.uid == b.uid);
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RequireEx out;
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out.uid = a.uid;
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out.indexOfFirstDependee = std::min(a.indexOfFirstDependee, b.indexOfFirstDependee);
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if(a.equalsVersion.isEmpty())
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{
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out.equalsVersion = b.equalsVersion;
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}
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else if (b.equalsVersion.isEmpty())
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{
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out.equalsVersion = a.equalsVersion;
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}
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else if (a.equalsVersion == b.equalsVersion)
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{
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out.equalsVersion = a.equalsVersion;
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}
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else
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{
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// FIXME: mark error as explicit version conflict
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return {false, out};
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}
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if(a.suggests.isEmpty())
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{
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out.suggests = b.suggests;
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}
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else if (b.suggests.isEmpty())
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{
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out.suggests = a.suggests;
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}
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else
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{
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Version aVer(a.suggests);
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Version bVer(b.suggests);
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out.suggests = (aVer < bVer ? b.suggests : a.suggests);
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}
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return {true, out};
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}
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// gather the requirements from all components, finding any obvious conflicts
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static bool gatherRequirementsFromComponents(const ComponentContainer & input, RequireExSet & output)
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{
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bool succeeded = true;
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size_t componentNum = 0;
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for(auto component: input)
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{
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auto &componentRequires = component->m_cachedRequires;
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for(const auto & componentRequire: componentRequires)
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{
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auto found = std::find_if(output.cbegin(), output.cend(), [componentRequire](const Meta::Require & req){
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return req.uid == componentRequire.uid;
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});
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RequireEx componenRequireEx;
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componenRequireEx.uid = componentRequire.uid;
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componenRequireEx.suggests = componentRequire.suggests;
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componenRequireEx.equalsVersion = componentRequire.equalsVersion;
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componenRequireEx.indexOfFirstDependee = componentNum;
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if(found != output.cend())
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{
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// found... process it further
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auto result = composeRequirement(componenRequireEx, *found);
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if(result.ok)
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{
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output.erase(componenRequireEx);
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output.insert(result.outcome);
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}
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else
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{
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qCritical()
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<< "Conflicting requirements:"
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<< componentRequire.uid
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<< "versions:"
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<< componentRequire.equalsVersion
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<< ";"
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<< (*found).equalsVersion;
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}
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succeeded &= result.ok;
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}
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else
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{
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// not found, accumulate
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output.insert(componenRequireEx);
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}
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}
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componentNum++;
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}
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return succeeded;
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}
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/// Get list of uids that can be trivially removed because nothing is depending on them anymore (and they are installed as deps)
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static void getTrivialRemovals(const ComponentContainer & components, const RequireExSet & reqs, QStringList &toRemove)
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{
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for(const auto & component: components)
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{
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if(!component->m_dependencyOnly)
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continue;
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if(!component->m_cachedVolatile)
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continue;
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RequireEx reqNeedle;
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reqNeedle.uid = component->m_uid;
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const auto iter = reqs.find(reqNeedle);
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if(iter == reqs.cend())
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{
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toRemove.append(component->m_uid);
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}
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}
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}
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/**
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* handles:
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* - trivial addition (there is an unmet requirement and it can be trivially met by adding something)
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* - trivial version conflict of dependencies == explicit version required and installed is different
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*
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* toAdd - set of requirements than mean adding a new component
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* toChange - set of requirements that mean changing version of an existing component
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*/
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static bool getTrivialComponentChanges(const ComponentIndex & index, const RequireExSet & input, RequireExSet & toAdd, RequireExSet & toChange)
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{
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enum class Decision
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{
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Undetermined,
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Met,
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Missing,
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VersionNotSame,
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LockedVersionNotSame
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} decision = Decision::Undetermined;
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QString reqStr;
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bool succeeded = true;
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// list the composed requirements and say if they are met or unmet
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for(auto & req: input)
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{
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do
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{
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if(req.equalsVersion.isEmpty())
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{
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reqStr = QString("Req: %1").arg(req.uid);
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if(index.contains(req.uid))
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{
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decision = Decision::Met;
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}
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else
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{
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toAdd.insert(req);
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decision = Decision::Missing;
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}
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break;
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}
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else
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{
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reqStr = QString("Req: %1 == %2").arg(req.uid, req.equalsVersion);
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const auto & compIter = index.find(req.uid);
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if(compIter == index.cend())
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{
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toAdd.insert(req);
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decision = Decision::Missing;
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break;
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}
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auto & comp = (*compIter);
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if(comp->getVersion() != req.equalsVersion)
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{
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if(comp->isCustom()) {
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decision = Decision::LockedVersionNotSame;
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} else {
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if(comp->m_dependencyOnly)
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{
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decision = Decision::VersionNotSame;
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}
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else
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{
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decision = Decision::LockedVersionNotSame;
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}
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}
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break;
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}
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decision = Decision::Met;
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}
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} while(false);
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switch(decision)
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{
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case Decision::Undetermined:
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qCritical() << "No decision for" << reqStr;
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succeeded = false;
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break;
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case Decision::Met:
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qDebug() << reqStr << "Is met.";
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break;
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case Decision::Missing:
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qDebug() << reqStr << "Is missing and should be added at" << req.indexOfFirstDependee;
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toAdd.insert(req);
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break;
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case Decision::VersionNotSame:
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qDebug() << reqStr << "already has different version that can be changed.";
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toChange.insert(req);
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break;
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case Decision::LockedVersionNotSame:
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qDebug() << reqStr << "already has different version that cannot be changed.";
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succeeded = false;
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break;
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}
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}
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return succeeded;
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}
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// FIXME, TODO: decouple dependency resolution from loading
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// FIXME: This works directly with the PackProfile internals. It shouldn't! It needs richer data types than PackProfile uses.
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// FIXME: throw all this away and use a graph
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void ComponentUpdateTask::resolveDependencies(bool checkOnly)
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{
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qDebug() << "Resolving dependencies";
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/*
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* this is a naive dependency resolving algorithm. all it does is check for following conditions and react in simple ways:
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* 1. There are conflicting dependencies on the same uid with different exact version numbers
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* -> hard error
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* 2. A dependency has non-matching exact version number
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* -> hard error
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* 3. A dependency is entirely missing and needs to be injected before the dependee(s)
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* -> requirements are injected
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*
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* NOTE: this is a placeholder and should eventually be replaced with something 'serious'
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*/
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auto & components = d->m_list->d->components;
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auto & componentIndex = d->m_list->d->componentIndex;
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RequireExSet allRequires;
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QStringList toRemove;
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do
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{
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allRequires.clear();
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toRemove.clear();
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if(!gatherRequirementsFromComponents(components, allRequires))
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{
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emitFailed(tr("Conflicting requirements detected during dependency checking!"));
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return;
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}
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getTrivialRemovals(components, allRequires, toRemove);
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if(!toRemove.isEmpty())
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{
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qDebug() << "Removing obsolete components...";
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for(auto & remove : toRemove)
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{
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qDebug() << "Removing" << remove;
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d->m_list->remove(remove);
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}
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}
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} while (!toRemove.isEmpty());
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RequireExSet toAdd;
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RequireExSet toChange;
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bool succeeded = getTrivialComponentChanges(componentIndex, allRequires, toAdd, toChange);
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if(!succeeded)
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{
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emitFailed(tr("Instance has conflicting dependencies."));
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return;
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}
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if(checkOnly)
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{
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if(toAdd.size() || toChange.size())
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{
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emitFailed(tr("Instance has unresolved dependencies while loading/checking for launch."));
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}
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else
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{
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emitSucceeded();
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}
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return;
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}
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bool recursionNeeded = false;
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if(toAdd.size())
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{
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// add stuff...
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for(auto &add: toAdd)
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{
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ComponentPtr component = new Component(d->m_list, add.uid);
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if(!add.equalsVersion.isEmpty())
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{
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// exact version
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qDebug() << "Adding" << add.uid << "version" << add.equalsVersion << "at position" << add.indexOfFirstDependee;
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component->m_version = add.equalsVersion;
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}
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else
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{
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// version needs to be decided
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qDebug() << "Adding" << add.uid << "at position" << add.indexOfFirstDependee;
|
|
// ############################################################################################################
|
|
// HACK HACK HACK HACK FIXME: this is a placeholder for deciding what version to use. For now, it is hardcoded.
|
|
if(!add.suggests.isEmpty())
|
|
{
|
|
component->m_version = add.suggests;
|
|
}
|
|
else
|
|
{
|
|
if(add.uid == "org.lwjgl")
|
|
{
|
|
component->m_version = "2.9.1";
|
|
}
|
|
else if (add.uid == "org.lwjgl3")
|
|
{
|
|
component->m_version = "3.1.2";
|
|
}
|
|
else if (add.uid == "net.fabricmc.intermediary")
|
|
{
|
|
auto minecraft = std::find_if(components.begin(), components.end(), [](ComponentPtr & cmp){
|
|
return cmp->getID() == "net.minecraft";
|
|
});
|
|
if(minecraft != components.end()) {
|
|
component->m_version = (*minecraft)->getVersion();
|
|
}
|
|
}
|
|
}
|
|
// HACK HACK HACK HACK FIXME: this is a placeholder for deciding what version to use. For now, it is hardcoded.
|
|
// ############################################################################################################
|
|
}
|
|
component->m_dependencyOnly = true;
|
|
// FIXME: this should not work directly with the component list
|
|
d->m_list->insertComponent(add.indexOfFirstDependee, component);
|
|
componentIndex[add.uid] = component;
|
|
}
|
|
recursionNeeded = true;
|
|
}
|
|
if(toChange.size())
|
|
{
|
|
// change a version of something that exists
|
|
for(auto &change: toChange)
|
|
{
|
|
// FIXME: this should not work directly with the component list
|
|
qDebug() << "Setting version of " << change.uid << "to" << change.equalsVersion;
|
|
auto component = componentIndex[change.uid];
|
|
component->setVersion(change.equalsVersion);
|
|
}
|
|
recursionNeeded = true;
|
|
}
|
|
|
|
if(recursionNeeded)
|
|
{
|
|
loadComponents();
|
|
}
|
|
else
|
|
{
|
|
emitSucceeded();
|
|
}
|
|
}
|
|
|
|
void ComponentUpdateTask::remoteLoadSucceeded(size_t taskIndex)
|
|
{
|
|
auto &taskSlot = d->remoteLoadStatusList[taskIndex];
|
|
if(taskSlot.finished)
|
|
{
|
|
qWarning() << "Got multiple results from remote load task" << taskIndex;
|
|
return;
|
|
}
|
|
qDebug() << "Remote task" << taskIndex << "succeeded";
|
|
taskSlot.succeeded = false;
|
|
taskSlot.finished = true;
|
|
d->remoteTasksInProgress --;
|
|
// update the cached data of the component from the downloaded version file.
|
|
if (taskSlot.type == RemoteLoadStatus::Type::Version)
|
|
{
|
|
auto component = d->m_list->getComponent(taskSlot.PackProfileIndex);
|
|
component->m_loaded = true;
|
|
component->updateCachedData();
|
|
}
|
|
checkIfAllFinished();
|
|
}
|
|
|
|
|
|
void ComponentUpdateTask::remoteLoadFailed(size_t taskIndex, const QString& msg)
|
|
{
|
|
auto &taskSlot = d->remoteLoadStatusList[taskIndex];
|
|
if(taskSlot.finished)
|
|
{
|
|
qWarning() << "Got multiple results from remote load task" << taskIndex;
|
|
return;
|
|
}
|
|
qDebug() << "Remote task" << taskIndex << "failed: " << msg;
|
|
d->remoteLoadSuccessful = false;
|
|
taskSlot.succeeded = false;
|
|
taskSlot.finished = true;
|
|
taskSlot.error = msg;
|
|
d->remoteTasksInProgress --;
|
|
checkIfAllFinished();
|
|
}
|
|
|
|
void ComponentUpdateTask::checkIfAllFinished()
|
|
{
|
|
if(d->remoteTasksInProgress)
|
|
{
|
|
// not yet...
|
|
return;
|
|
}
|
|
if(d->remoteLoadSuccessful)
|
|
{
|
|
// nothing bad happened... clear the temp load status and proceed with looking at dependencies
|
|
d->remoteLoadStatusList.clear();
|
|
resolveDependencies(d->mode == Mode::Launch);
|
|
}
|
|
else
|
|
{
|
|
// remote load failed... report error and bail
|
|
QStringList allErrorsList;
|
|
for(auto & item: d->remoteLoadStatusList)
|
|
{
|
|
if(!item.succeeded)
|
|
{
|
|
allErrorsList.append(item.error);
|
|
}
|
|
}
|
|
auto allErrors = allErrorsList.join("\n");
|
|
emitFailed(tr("Component metadata update task failed while downloading from remote server:\n%1").arg(allErrors));
|
|
d->remoteLoadStatusList.clear();
|
|
}
|
|
}
|