1 files changed, 93 insertions, 0 deletions
diff --git a/src/test/osdc/FakeWriteback.cc b/src/test/osdc/FakeWriteback.cc
new file mode 100644
index 000000000..2f58965cc
--- /dev/null
+++ b/src/test/osdc/FakeWriteback.cc
@@ -0,0 +1,93 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include <errno.h>
+#include <time.h>
+
+#include <thread>
+#include "common/debug.h"
+#include "common/Cond.h"
+#include "common/Finisher.h"
+#include "common/ceph_mutex.h"
+#include "include/ceph_assert.h"
+#include "common/ceph_time.h"
+
+#include "FakeWriteback.h"
+
+#define dout_subsys ceph_subsys_objectcacher
+#undef dout_prefix
+#define dout_prefix *_dout << "FakeWriteback(" << this << ") "
+
+class C_Delay : public Context {
+  CephContext *m_cct;
+  Context *m_con;
+  ceph::timespan m_delay;
+  ceph::mutex *m_lock;
+  bufferlist *m_bl;
+  uint64_t m_off;
+
+public:
+  C_Delay(CephContext *cct, Context *c, ceph::mutex *lock, uint64_t off,
+	  bufferlist *pbl, uint64_t delay_ns=0)
+    : m_cct(cct), m_con(c), m_delay(delay_ns * std::chrono::nanoseconds(1)),
+      m_lock(lock), m_bl(pbl), m_off(off) {}
+  void finish(int r) override {
+    std::this_thread::sleep_for(m_delay);
+    if (m_bl) {
+      buffer::ptr bp(r);
+      bp.zero();
+      m_bl->append(bp);
+      ldout(m_cct, 20) << "finished read " << m_off << "~" << r << dendl;
+    }
+    std::lock_guard locker{*m_lock};
+    m_con->complete(r);
+  }
+};
+
+FakeWriteback::FakeWriteback(CephContext *cct, ceph::mutex *lock, uint64_t delay_ns)
+  : m_cct(cct), m_lock(lock), m_delay_ns(delay_ns)
+{
+  m_finisher = new Finisher(cct);
+  m_finisher->start();
+}
+
+FakeWriteback::~FakeWriteback()
+{
+  m_finisher->stop();
+  delete m_finisher;
+}
+
+void FakeWriteback::read(const object_t& oid, uint64_t object_no,
+			 const object_locator_t& oloc,
+			 uint64_t off, uint64_t len, snapid_t snapid,
+			 bufferlist *pbl, uint64_t trunc_size,
+			 __u32 trunc_seq, int op_flags,
+                         const ZTracer::Trace &parent_trace,
+                         Context *onfinish)
+{
+  C_Delay *wrapper = new C_Delay(m_cct, onfinish, m_lock, off, pbl,
+				 m_delay_ns);
+  m_finisher->queue(wrapper, len);
+}
+
+ceph_tid_t FakeWriteback::write(const object_t& oid,
+				const object_locator_t& oloc,
+				uint64_t off, uint64_t len,
+				const SnapContext& snapc,
+				const bufferlist &bl, ceph::real_time mtime,
+				uint64_t trunc_size, __u32 trunc_seq,
+				ceph_tid_t journal_tid,
+                                const ZTracer::Trace &parent_trace,
+                                Context *oncommit)
+{
+  C_Delay *wrapper = new C_Delay(m_cct, oncommit, m_lock, off, NULL,
+				 m_delay_ns);
+  m_finisher->queue(wrapper, 0);
+  return ++m_tid;
+}
+
+bool FakeWriteback::may_copy_on_write(const object_t&, uint64_t, uint64_t,
+				      snapid_t)
+{
+  return false;
+}