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-rw-r--r--libraries/logic/net/HttpMetaCache.cpp273
1 files changed, 0 insertions, 273 deletions
diff --git a/libraries/logic/net/HttpMetaCache.cpp b/libraries/logic/net/HttpMetaCache.cpp
deleted file mode 100644
index ea3e2834..00000000
--- a/libraries/logic/net/HttpMetaCache.cpp
+++ /dev/null
@@ -1,273 +0,0 @@
-/* Copyright 2013-2015 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 "Env.h"
-#include "HttpMetaCache.h"
-#include "FileSystem.h"
-
-#include <QFileInfo>
-#include <QFile>
-#include <QDateTime>
-#include <QCryptographicHash>
-
-#include <QDebug>
-
-#include <QJsonDocument>
-#include <QJsonArray>
-#include <QJsonObject>
-
-QString MetaEntry::getFullPath()
-{
- // FIXME: make local?
- return FS::PathCombine(basePath, relativePath);
-}
-
-HttpMetaCache::HttpMetaCache(QString path) : QObject()
-{
- m_index_file = path;
- saveBatchingTimer.setSingleShot(true);
- saveBatchingTimer.setTimerType(Qt::VeryCoarseTimer);
- connect(&saveBatchingTimer, SIGNAL(timeout()), SLOT(SaveNow()));
-}
-
-HttpMetaCache::~HttpMetaCache()
-{
- saveBatchingTimer.stop();
- SaveNow();
-}
-
-MetaEntryPtr HttpMetaCache::getEntry(QString base, QString resource_path)
-{
- // no base. no base path. can't store
- if (!m_entries.contains(base))
- {
- // TODO: log problem
- return MetaEntryPtr();
- }
- EntryMap &map = m_entries[base];
- if (map.entry_list.contains(resource_path))
- {
- return map.entry_list[resource_path];
- }
- return MetaEntryPtr();
-}
-
-MetaEntryPtr HttpMetaCache::resolveEntry(QString base, QString resource_path, QString expected_etag)
-{
- auto entry = getEntry(base, resource_path);
- // it's not present? generate a default stale entry
- if (!entry)
- {
- return staleEntry(base, resource_path);
- }
-
- auto &selected_base = m_entries[base];
- QString real_path = FS::PathCombine(selected_base.base_path, resource_path);
- QFileInfo finfo(real_path);
-
- // is the file really there? if not -> stale
- if (!finfo.isFile() || !finfo.isReadable())
- {
- // if the file doesn't exist, we disown the entry
- selected_base.entry_list.remove(resource_path);
- return staleEntry(base, resource_path);
- }
-
- if (!expected_etag.isEmpty() && expected_etag != entry->etag)
- {
- // if the etag doesn't match expected, we disown the entry
- selected_base.entry_list.remove(resource_path);
- return staleEntry(base, resource_path);
- }
-
- // if the file changed, check md5sum
- qint64 file_last_changed = finfo.lastModified().toUTC().toMSecsSinceEpoch();
- if (file_last_changed != entry->local_changed_timestamp)
- {
- QFile input(real_path);
- input.open(QIODevice::ReadOnly);
- QString md5sum = QCryptographicHash::hash(input.readAll(), QCryptographicHash::Md5)
- .toHex()
- .constData();
- if (entry->md5sum != md5sum)
- {
- selected_base.entry_list.remove(resource_path);
- return staleEntry(base, resource_path);
- }
- // md5sums matched... keep entry and save the new state to file
- entry->local_changed_timestamp = file_last_changed;
- SaveEventually();
- }
-
- // entry passed all the checks we cared about.
- entry->basePath = getBasePath(base);
- return entry;
-}
-
-bool HttpMetaCache::updateEntry(MetaEntryPtr stale_entry)
-{
- if (!m_entries.contains(stale_entry->baseId))
- {
- qCritical() << "Cannot add entry with unknown base: "
- << stale_entry->baseId.toLocal8Bit();
- return false;
- }
- if (stale_entry->stale)
- {
- qCritical() << "Cannot add stale entry: " << stale_entry->getFullPath().toLocal8Bit();
- return false;
- }
- m_entries[stale_entry->baseId].entry_list[stale_entry->relativePath] = stale_entry;
- SaveEventually();
- return true;
-}
-
-bool HttpMetaCache::evictEntry(MetaEntryPtr entry)
-{
- if(entry)
- {
- entry->stale = true;
- SaveEventually();
- return true;
- }
- return false;
-}
-
-MetaEntryPtr HttpMetaCache::staleEntry(QString base, QString resource_path)
-{
- auto foo = new MetaEntry();
- foo->baseId = base;
- foo->basePath = getBasePath(base);
- foo->relativePath = resource_path;
- foo->stale = true;
- return MetaEntryPtr(foo);
-}
-
-void HttpMetaCache::addBase(QString base, QString base_root)
-{
- // TODO: report error
- if (m_entries.contains(base))
- return;
- // TODO: check if the base path is valid
- EntryMap foo;
- foo.base_path = base_root;
- m_entries[base] = foo;
-}
-
-QString HttpMetaCache::getBasePath(QString base)
-{
- if (m_entries.contains(base))
- {
- return m_entries[base].base_path;
- }
- return QString();
-}
-
-void HttpMetaCache::Load()
-{
- if(m_index_file.isNull())
- return;
-
- QFile index(m_index_file);
- if (!index.open(QIODevice::ReadOnly))
- return;
-
- QJsonDocument json = QJsonDocument::fromJson(index.readAll());
- if (!json.isObject())
- return;
- auto root = json.object();
- // check file version first
- auto version_val = root.value("version");
- if (!version_val.isString())
- return;
- if (version_val.toString() != "1")
- return;
-
- // read the entry array
- auto entries_val = root.value("entries");
- if (!entries_val.isArray())
- return;
- QJsonArray array = entries_val.toArray();
- for (auto element : array)
- {
- if (!element.isObject())
- return;
- auto element_obj = element.toObject();
- QString base = element_obj.value("base").toString();
- if (!m_entries.contains(base))
- continue;
- auto &entrymap = m_entries[base];
- auto foo = new MetaEntry();
- foo->baseId = base;
- QString path = foo->relativePath = element_obj.value("path").toString();
- foo->md5sum = element_obj.value("md5sum").toString();
- foo->etag = element_obj.value("etag").toString();
- foo->local_changed_timestamp = element_obj.value("last_changed_timestamp").toDouble();
- foo->remote_changed_timestamp =
- element_obj.value("remote_changed_timestamp").toString();
- // presumed innocent until closer examination
- foo->stale = false;
- entrymap.entry_list[path] = MetaEntryPtr(foo);
- }
-}
-
-void HttpMetaCache::SaveEventually()
-{
- // reset the save timer
- saveBatchingTimer.stop();
- saveBatchingTimer.start(30000);
-}
-
-void HttpMetaCache::SaveNow()
-{
- if(m_index_file.isNull())
- return;
- QJsonObject toplevel;
- toplevel.insert("version", QJsonValue(QString("1")));
- QJsonArray entriesArr;
- for (auto group : m_entries)
- {
- for (auto entry : group.entry_list)
- {
- // do not save stale entries. they are dead.
- if(entry->stale)
- {
- continue;
- }
- QJsonObject entryObj;
- entryObj.insert("base", QJsonValue(entry->baseId));
- entryObj.insert("path", QJsonValue(entry->relativePath));
- entryObj.insert("md5sum", QJsonValue(entry->md5sum));
- entryObj.insert("etag", QJsonValue(entry->etag));
- entryObj.insert("last_changed_timestamp",
- QJsonValue(double(entry->local_changed_timestamp)));
- if (!entry->remote_changed_timestamp.isEmpty())
- entryObj.insert("remote_changed_timestamp",
- QJsonValue(entry->remote_changed_timestamp));
- entriesArr.append(entryObj);
- }
- }
- toplevel.insert("entries", entriesArr);
-
- QJsonDocument doc(toplevel);
- try
- {
- FS::write(m_index_file, doc.toJson());
- }
- catch (Exception & e)
- {
- qWarning() << e.what();
- }
-}