diff options
Diffstat (limited to 'logic/net/HttpMetaCache.h')
| -rw-r--r-- | logic/net/HttpMetaCache.h | 39 |
1 files changed, 32 insertions, 7 deletions
diff --git a/logic/net/HttpMetaCache.h b/logic/net/HttpMetaCache.h index 161483ad..557d9298 100644 --- a/logic/net/HttpMetaCache.h +++ b/logic/net/HttpMetaCache.h @@ -2,6 +2,7 @@ #include <QString> #include <QSharedPointer> #include <QMap> +#include <qtimer.h> struct MetaEntry { @@ -9,23 +10,46 @@ struct MetaEntry QString path; QString md5sum; QString etag; - quint64 last_changed_timestamp = 0; + qint64 local_changed_timestamp = 0; + QString remote_changed_timestamp; // QString for now, RFC 2822 encoded time + bool stale = true; + QString getFullPath(); }; -typedef QSharedPointer<MetaEntry> MetaEntryPtr; +typedef std::shared_ptr<MetaEntry> MetaEntryPtr; -class HttpMetaCache +class HttpMetaCache : public QObject { + Q_OBJECT public: // supply path to the cache index file HttpMetaCache(QString path); ~HttpMetaCache(); - MetaEntryPtr getEntryForResource(QString base, QString resource_path); - void addEntry(QString base, QString resource_path, QString etag); + + // get the entry solely from the cache + // you probably don't want this, unless you have some specific caching needs. + MetaEntryPtr getEntry(QString base, QString resource_path); + + // get the entry from cache and verify that it isn't stale (within reason) + MetaEntryPtr resolveEntry(QString base, QString resource_path, + QString expected_etag = QString()); + + // add a previously resolved stale entry + bool updateEntry(MetaEntryPtr stale_entry); + void addBase(QString base, QString base_root); -private: - void Save(); + + // (re)start a timer that calls SaveNow later. + void SaveEventually(); void Load(); + QString getBasePath(QString base); +public +slots: + void SaveNow(); + +private: + // create a new stale entry, given the parameters + MetaEntryPtr staleEntry(QString base, QString resource_path); struct EntryMap { QString base_path; @@ -33,4 +57,5 @@ private: }; QMap<QString, EntryMap> m_entries; QString m_index_file; + QTimer saveBatchingTimer; };
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