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-rw-r--r--api/logic/net/HttpMetaCache.cpp366
1 files changed, 183 insertions, 183 deletions
diff --git a/api/logic/net/HttpMetaCache.cpp b/api/logic/net/HttpMetaCache.cpp
index 95906d2c..66325f71 100644
--- a/api/logic/net/HttpMetaCache.cpp
+++ b/api/logic/net/HttpMetaCache.cpp
@@ -30,244 +30,244 @@
QString MetaEntry::getFullPath()
{
- // FIXME: make local?
- return FS::PathCombine(basePath, relativePath);
+ // 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()));
+ m_index_file = path;
+ saveBatchingTimer.setSingleShot(true);
+ saveBatchingTimer.setTimerType(Qt::VeryCoarseTimer);
+ connect(&saveBatchingTimer, SIGNAL(timeout()), SLOT(SaveNow()));
}
HttpMetaCache::~HttpMetaCache()
{
- saveBatchingTimer.stop();
- SaveNow();
+ 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();
+ // 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 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);
+ 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);
- }
+ // 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 (!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();
- }
+ // 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;
+ // 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;
+ 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;
+ 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);
+ 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;
+ // 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();
+ if (m_entries.contains(base))
+ {
+ return m_entries[base].base_path;
+ }
+ return QString();
}
void HttpMetaCache::Load()
{
- if(m_index_file.isNull())
- return;
+ if(m_index_file.isNull())
+ return;
- QFile index(m_index_file);
- if (!index.open(QIODevice::ReadOnly))
- 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;
+ 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);
- }
+ // 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);
+ // 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);
+ 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 (const Exception &e)
- {
- qWarning() << e.what();
- }
+ QJsonDocument doc(toplevel);
+ try
+ {
+ FS::write(m_index_file, doc.toJson());
+ }
+ catch (const Exception &e)
+ {
+ qWarning() << e.what();
+ }
}