1 files changed, 61 insertions, 0 deletions
diff --git a/src/librbd/cache/pwl/Builder.h b/src/librbd/cache/pwl/Builder.h
new file mode 100644
index 000000000..9db28ea68
--- /dev/null
+++ b/src/librbd/cache/pwl/Builder.h
@@ -0,0 +1,61 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_CACHE_PWL_BUILDER_H
+#define CEPH_LIBRBD_CACHE_PWL_BUILDER_H
+
+namespace librbd {
+namespace cache {
+namespace pwl {
+
+template <typename T>
+class Builder {
+public:
+  virtual ~Builder() {}
+  virtual std::shared_ptr<WriteLogEntry> create_write_log_entry(
+      uint64_t image_offset_bytes, uint64_t write_bytes) = 0;
+  virtual std::shared_ptr<WriteLogEntry> create_write_log_entry(
+      std::shared_ptr<SyncPointLogEntry> sync_point_entry,
+      uint64_t image_offset_bytes, uint64_t write_bytes) = 0;
+  virtual std::shared_ptr<WriteLogEntry> create_writesame_log_entry(
+      uint64_t image_offset_bytes, uint64_t write_bytes,
+      uint32_t data_length) = 0;
+  virtual std::shared_ptr<WriteLogEntry> create_writesame_log_entry(
+      std::shared_ptr<SyncPointLogEntry> sync_point_entry,
+      uint64_t image_offset_bytes, uint64_t write_bytes,
+      uint32_t data_length) = 0;
+  virtual C_WriteRequest<T> *create_write_request(
+      T &pwl, utime_t arrived, io::Extents &&image_extents,
+      bufferlist&& bl, const int fadvise_flags, ceph::mutex &lock,
+      PerfCounters *perfcounter, Context *user_req) = 0;
+  virtual C_WriteSameRequest<T> *create_writesame_request(
+      T &pwl, utime_t arrived, io::Extents &&image_extents,
+      bufferlist&& bl, const int fadvise_flags, ceph::mutex &lock,
+      PerfCounters *perfcounter, Context *user_req) = 0;
+  virtual C_WriteRequest<T> *create_comp_and_write_request(
+      T &pwl, utime_t arrived, io::Extents &&image_extents,
+      bufferlist&& cmp_bl, bufferlist&& bl, uint64_t *mismatch_offset,
+      const int fadvise_flags, ceph::mutex &lock,
+      PerfCounters *perfcounter, Context *user_req) = 0;
+  virtual std::shared_ptr<WriteLogOperation> create_write_log_operation(
+      WriteLogOperationSet &set, uint64_t image_offset_bytes,
+      uint64_t write_bytes, CephContext *cct,
+      std::shared_ptr<WriteLogEntry> write_log_entry) = 0;
+  virtual std::shared_ptr<WriteLogOperation> create_write_log_operation(
+      WriteLogOperationSet &set, uint64_t image_offset_bytes,
+      uint64_t write_bytes, uint32_t data_len, CephContext *cct,
+      std::shared_ptr<WriteLogEntry> writesame_log_entry) = 0;
+  virtual std::shared_ptr<pwl::DiscardLogOperation> create_discard_log_operation(
+      std::shared_ptr<SyncPoint> sync_point, uint64_t image_offset_bytes,
+      uint64_t write_bytes, uint32_t discard_granularity_bytes,
+      utime_t dispatch_time, PerfCounters *perfcounter, CephContext *cct) = 0;
+  virtual C_ReadRequest *create_read_request(CephContext *cct, utime_t arrived,
+      PerfCounters *perfcounter, ceph::bufferlist *bl, Context *on_finish) = 0;
+
+};
+
+} // namespace pwl
+} // namespace cache
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_CACHE_PWL_BUILDER_H