From 19fcec84d8d7d21e796c7624e521b60d28ee21ed Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:45:59 +0200 Subject: Adding upstream version 16.2.11+ds. Signed-off-by: Daniel Baumann --- src/librbd/cache/ParentCacheObjectDispatch.h | 161 +++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 src/librbd/cache/ParentCacheObjectDispatch.h (limited to 'src/librbd/cache/ParentCacheObjectDispatch.h') diff --git a/src/librbd/cache/ParentCacheObjectDispatch.h b/src/librbd/cache/ParentCacheObjectDispatch.h new file mode 100644 index 000000000..1cf9c73b0 --- /dev/null +++ b/src/librbd/cache/ParentCacheObjectDispatch.h @@ -0,0 +1,161 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#ifndef CEPH_LIBRBD_CACHE_PARENT_CACHER_OBJECT_DISPATCH_H +#define CEPH_LIBRBD_CACHE_PARENT_CACHER_OBJECT_DISPATCH_H + +#include "librbd/io/ObjectDispatchInterface.h" +#include "common/ceph_mutex.h" +#include "librbd/cache/TypeTraits.h" +#include "tools/immutable_object_cache/CacheClient.h" +#include "tools/immutable_object_cache/Types.h" + +namespace librbd { + +class ImageCtx; + +namespace plugin { template struct Api; } + +namespace cache { + +template +class ParentCacheObjectDispatch : public io::ObjectDispatchInterface { + // mock unit testing support + typedef cache::TypeTraits TypeTraits; + typedef typename TypeTraits::CacheClient CacheClient; + +public: + static ParentCacheObjectDispatch* create(ImageCtxT* image_ctx, + plugin::Api& plugin_api) { + return new ParentCacheObjectDispatch(image_ctx, plugin_api); + } + + ParentCacheObjectDispatch(ImageCtxT* image_ctx, + plugin::Api& plugin_api); + ~ParentCacheObjectDispatch() override; + + io::ObjectDispatchLayer get_dispatch_layer() const override { + return io::OBJECT_DISPATCH_LAYER_PARENT_CACHE; + } + + void init(Context* on_finish = nullptr); + void shut_down(Context* on_finish) { + m_image_ctx->op_work_queue->queue(on_finish, 0); + } + + bool read( + uint64_t object_no, io::ReadExtents* extents, IOContext io_context, + int op_flags, int read_flags, const ZTracer::Trace &parent_trace, + uint64_t* version, int* object_dispatch_flags, + io::DispatchResult* dispatch_result, Context** on_finish, + Context* on_dispatched) override; + + bool discard( + uint64_t object_no, uint64_t object_off, uint64_t object_len, + IOContext io_context, int discard_flags, + const ZTracer::Trace &parent_trace, int* object_dispatch_flags, + uint64_t* journal_tid, io::DispatchResult* dispatch_result, + Context** on_finish, Context* on_dispatched) { + return false; + } + + bool write( + uint64_t object_no, uint64_t object_off, ceph::bufferlist&& data, + IOContext io_context, int op_flags, int write_flags, + std::optional assert_version, + const ZTracer::Trace &parent_trace, int* object_dispatch_flags, + uint64_t* journal_tid, io::DispatchResult* dispatch_result, + Context** on_finish, Context* on_dispatched) { + return false; + } + + bool write_same( + uint64_t object_no, uint64_t object_off, uint64_t object_len, + io::LightweightBufferExtents&& buffer_extents, ceph::bufferlist&& data, + IOContext io_context, int op_flags, + const ZTracer::Trace &parent_trace, int* object_dispatch_flags, + uint64_t* journal_tid, io::DispatchResult* dispatch_result, + Context** on_finish, Context* on_dispatched) { + return false; + } + + bool compare_and_write( + uint64_t object_no, uint64_t object_off, ceph::bufferlist&& cmp_data, + ceph::bufferlist&& write_data, IOContext io_context, int op_flags, + const ZTracer::Trace &parent_trace, uint64_t* mismatch_offset, + int* object_dispatch_flags, uint64_t* journal_tid, + io::DispatchResult* dispatch_result, Context** on_finish, + Context* on_dispatched) { + return false; + } + + bool flush( + io::FlushSource flush_source, const ZTracer::Trace &parent_trace, + uint64_t* journal_id, io::DispatchResult* dispatch_result, + Context** on_finish, Context* on_dispatched) { + return false; + } + + bool list_snaps( + uint64_t object_no, io::Extents&& extents, io::SnapIds&& snap_ids, + int list_snap_flags, const ZTracer::Trace &parent_trace, + io::SnapshotDelta* snapshot_delta, int* object_dispatch_flags, + io::DispatchResult* dispatch_result, Context** on_finish, + Context* on_dispatched) override { + return false; + } + + bool invalidate_cache(Context* on_finish) { + return false; + } + + bool reset_existence_cache(Context* on_finish) { + return false; + } + + void extent_overwritten( + uint64_t object_no, uint64_t object_off, uint64_t object_len, + uint64_t journal_tid, uint64_t new_journal_tid) { + } + + int prepare_copyup( + uint64_t object_no, + io::SnapshotSparseBufferlist* snapshot_sparse_bufferlist) override { + return 0; + } + + ImageCtxT* get_image_ctx() { + return m_image_ctx; + } + + CacheClient* get_cache_client() { + return m_cache_client; + } + +private: + + int read_object(std::string file_path, ceph::bufferlist* read_data, + uint64_t offset, uint64_t length, Context *on_finish); + void handle_read_cache(ceph::immutable_obj_cache::ObjectCacheRequest* ack, + uint64_t object_no, io::ReadExtents* extents, + IOContext io_context, + const ZTracer::Trace &parent_trace, + io::DispatchResult* dispatch_result, + Context* on_dispatched); + int handle_register_client(bool reg); + void create_cache_session(Context* on_finish, bool is_reconnect); + + ImageCtxT* m_image_ctx; + plugin::Api& m_plugin_api; + + ceph::mutex m_lock; + CacheClient *m_cache_client = nullptr; + bool m_connecting = false; +}; + +} // namespace cache +} // namespace librbd + +extern template class librbd::cache::ParentCacheObjectDispatch; + +#endif // CEPH_LIBRBD_CACHE_PARENT_CACHER_OBJECT_DISPATCH_H -- cgit v1.2.3