X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Fjournal%2FObjectRecorder.cc;fp=src%2Fceph%2Fsrc%2Fjournal%2FObjectRecorder.cc;h=0000000000000000000000000000000000000000;hb=7da45d65be36d36b880cc55c5036e96c24b53f00;hp=a87c31ddb29788d40060fdab17ce954807456220;hpb=691462d09d0987b47e112d6ee8740375df3c51b2;p=stor4nfv.git

diff --git a/src/ceph/src/journal/ObjectRecorder.cc b/src/ceph/src/journal/ObjectRecorder.cc
deleted file mode 100644
index a87c31d..0000000
--- a/src/ceph/src/journal/ObjectRecorder.cc
+++ /dev/null
@@ -1,429 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "journal/ObjectRecorder.h"
-#include "journal/Future.h"
-#include "journal/Utils.h"
-#include "include/assert.h"
-#include "common/Timer.h"
-#include "cls/journal/cls_journal_client.h"
-
-#define dout_subsys ceph_subsys_journaler
-#undef dout_prefix
-#define dout_prefix *_dout << "ObjectRecorder: " << this << " "
-
-using namespace cls::journal;
-using std::shared_ptr;
-
-namespace journal {
-
-ObjectRecorder::ObjectRecorder(librados::IoCtx &ioctx, const std::string &oid,
-                               uint64_t object_number, shared_ptr<Mutex> lock,
-                               ContextWQ *work_queue, SafeTimer &timer,
-                               Mutex &timer_lock, Handler *handler,
-                               uint8_t order, uint32_t flush_interval,
-                               uint64_t flush_bytes, double flush_age)
-  : RefCountedObject(NULL, 0), m_oid(oid), m_object_number(object_number),
-    m_cct(NULL), m_op_work_queue(work_queue), m_timer(timer),
-    m_timer_lock(timer_lock), m_handler(handler), m_order(order),
-    m_soft_max_size(1 << m_order), m_flush_interval(flush_interval),
-    m_flush_bytes(flush_bytes), m_flush_age(flush_age), m_flush_handler(this),
-    m_lock(lock), m_append_tid(0), m_pending_bytes(0),
-    m_size(0), m_overflowed(false), m_object_closed(false),
-    m_in_flight_flushes(false), m_aio_scheduled(false) {
-  m_ioctx.dup(ioctx);
-  m_cct = reinterpret_cast<CephContext*>(m_ioctx.cct());
-  assert(m_handler != NULL);
-}
-
-ObjectRecorder::~ObjectRecorder() {
-  assert(m_append_task == NULL);
-  assert(m_append_buffers.empty());
-  assert(m_in_flight_tids.empty());
-  assert(m_in_flight_appends.empty());
-  assert(!m_aio_scheduled);
-}
-
-bool ObjectRecorder::append_unlock(AppendBuffers &&append_buffers) {
-  assert(m_lock->is_locked());
-
-  FutureImplPtr last_flushed_future;
-  bool schedule_append = false;
-
-  if (m_overflowed) {
-    m_append_buffers.insert(m_append_buffers.end(),
-                            append_buffers.begin(), append_buffers.end());
-    m_lock->Unlock();
-    return false;
-  }
-
-  for (AppendBuffers::const_iterator iter = append_buffers.begin();
-       iter != append_buffers.end(); ++iter) {
-    if (append(*iter, &schedule_append)) {
-      last_flushed_future = iter->first;
-    }
-  }
-
-  if (last_flushed_future) {
-    flush(last_flushed_future);
-    m_lock->Unlock();
-  } else {
-    m_lock->Unlock();
-    if (schedule_append) {
-      schedule_append_task();
-    } else {
-      cancel_append_task();
-    }
-  }
-  return (!m_object_closed && !m_overflowed &&
-          m_size + m_pending_bytes >= m_soft_max_size);
-}
-
-void ObjectRecorder::flush(Context *on_safe) {
-  ldout(m_cct, 20) << __func__ << ": " << m_oid << dendl;
-
-  cancel_append_task();
-  Future future;
-  {
-    Mutex::Locker locker(*m_lock);
-
-    // if currently handling flush notifications, wait so that
-    // we notify in the correct order (since lock is dropped on
-    // callback)
-    if (m_in_flight_flushes) {
-      m_in_flight_flushes_cond.Wait(*(m_lock.get()));
-    }
-
-    // attach the flush to the most recent append
-    if (!m_append_buffers.empty()) {
-      future = Future(m_append_buffers.rbegin()->first);
-
-      flush_appends(true);
-    } else if (!m_in_flight_appends.empty()) {
-      AppendBuffers &append_buffers = m_in_flight_appends.rbegin()->second;
-      assert(!append_buffers.empty());
-      future = Future(append_buffers.rbegin()->first);
-    }
-  }
-
-  if (future.is_valid()) {
-    future.flush(on_safe);
-  } else {
-    on_safe->complete(0);
-  }
-}
-
-void ObjectRecorder::flush(const FutureImplPtr &future) {
-  ldout(m_cct, 20) << __func__ << ": " << m_oid << " flushing " << *future
-                   << dendl;
-
-  assert(m_lock->is_locked());
-
-  if (future->get_flush_handler().get() != &m_flush_handler) {
-    // if we don't own this future, re-issue the flush so that it hits the
-    // correct journal object owner
-    future->flush();
-    return;
-  } else if (future->is_flush_in_progress()) {
-    return;
-  }
-
-  if (m_object_closed || m_overflowed) {
-    return;
-  }
-
-  AppendBuffers::reverse_iterator r_it;
-  for (r_it = m_append_buffers.rbegin(); r_it != m_append_buffers.rend();
-       ++r_it) {
-    if (r_it->first == future) {
-      break;
-    }
-  }
-  assert(r_it != m_append_buffers.rend());
-
-  auto it = (++r_it).base();
-  assert(it != m_append_buffers.end());
-  ++it;
-
-  AppendBuffers flush_buffers;
-  flush_buffers.splice(flush_buffers.end(), m_append_buffers,
-                       m_append_buffers.begin(), it);
-  send_appends(&flush_buffers);
-}
-
-void ObjectRecorder::claim_append_buffers(AppendBuffers *append_buffers) {
-  ldout(m_cct, 20) << __func__ << ": " << m_oid << dendl;
-
-  assert(m_lock->is_locked());
-  assert(m_in_flight_tids.empty());
-  assert(m_in_flight_appends.empty());
-  assert(m_object_closed || m_overflowed);
-  append_buffers->splice(append_buffers->end(), m_append_buffers,
-                         m_append_buffers.begin(), m_append_buffers.end());
-}
-
-bool ObjectRecorder::close() {
-  assert (m_lock->is_locked());
-
-  ldout(m_cct, 20) << __func__ << ": " << m_oid << dendl;
-
-  cancel_append_task();
-
-  flush_appends(true);
-
-  assert(!m_object_closed);
-  m_object_closed = true;
-  return (m_in_flight_tids.empty() && !m_in_flight_flushes && !m_aio_scheduled);
-}
-
-void ObjectRecorder::handle_append_task() {
-  assert(m_timer_lock.is_locked());
-  m_append_task = NULL;
-
-  Mutex::Locker locker(*m_lock);
-  flush_appends(true);
-}
-
-void ObjectRecorder::cancel_append_task() {
-  Mutex::Locker locker(m_timer_lock);
-  if (m_append_task != NULL) {
-    m_timer.cancel_event(m_append_task);
-    m_append_task = NULL;
-  }
-}
-
-void ObjectRecorder::schedule_append_task() {
-  Mutex::Locker locker(m_timer_lock);
-  if (m_append_task == nullptr && m_flush_age > 0) {
-    m_append_task = m_timer.add_event_after(
-      m_flush_age, new FunctionContext([this](int) {
-	  handle_append_task();
-	}));
-  }
-}
-
-bool ObjectRecorder::append(const AppendBuffer &append_buffer,
-                            bool *schedule_append) {
-  assert(m_lock->is_locked());
-
-  bool flush_requested = false;
-  if (!m_object_closed && !m_overflowed) {
-    flush_requested = append_buffer.first->attach(&m_flush_handler);
-  }
-
-  m_append_buffers.push_back(append_buffer);
-  m_pending_bytes += append_buffer.second.length();
-
-  if (!flush_appends(false)) {
-    *schedule_append = true;
-  }
-  return flush_requested;
-}
-
-bool ObjectRecorder::flush_appends(bool force) {
-  assert(m_lock->is_locked());
-  if (m_object_closed || m_overflowed) {
-    return true;
-  }
-
-  if (m_append_buffers.empty() ||
-      (!force &&
-       m_size + m_pending_bytes < m_soft_max_size &&
-       (m_flush_interval > 0 && m_append_buffers.size() < m_flush_interval) &&
-       (m_flush_bytes > 0 && m_pending_bytes < m_flush_bytes))) {
-    return false;
-  }
-
-  m_pending_bytes = 0;
-  AppendBuffers append_buffers;
-  append_buffers.swap(m_append_buffers);
-  send_appends(&append_buffers);
-  return true;
-}
-
-void ObjectRecorder::handle_append_flushed(uint64_t tid, int r) {
-  ldout(m_cct, 10) << __func__ << ": " << m_oid << " tid=" << tid
-                   << ", r=" << r << dendl;
-
-  AppendBuffers append_buffers;
-  {
-    m_lock->Lock();
-    auto tid_iter = m_in_flight_tids.find(tid);
-    assert(tid_iter != m_in_flight_tids.end());
-    m_in_flight_tids.erase(tid_iter);
-
-    InFlightAppends::iterator iter = m_in_flight_appends.find(tid);
-    if (r == -EOVERFLOW || m_overflowed) {
-      if (iter != m_in_flight_appends.end()) {
-        m_overflowed = true;
-      } else {
-        // must have seen an overflow on a previous append op
-        assert(r == -EOVERFLOW && m_overflowed);
-      }
-
-      // notify of overflow once all in-flight ops are complete
-      if (m_in_flight_tids.empty() && !m_aio_scheduled) {
-        append_overflowed();
-        notify_handler_unlock();
-      } else {
-        m_lock->Unlock();
-      }
-      return;
-    }
-
-    assert(iter != m_in_flight_appends.end());
-    append_buffers.swap(iter->second);
-    assert(!append_buffers.empty());
-
-    m_in_flight_appends.erase(iter);
-    m_in_flight_flushes = true;
-    m_lock->Unlock();
-  }
-
-  // Flag the associated futures as complete.
-  for (AppendBuffers::iterator buf_it = append_buffers.begin();
-       buf_it != append_buffers.end(); ++buf_it) {
-    ldout(m_cct, 20) << __func__ << ": " << *buf_it->first << " marked safe"
-                     << dendl;
-    buf_it->first->safe(r);
-  }
-
-  // wake up any flush requests that raced with a RADOS callback
-  m_lock->Lock();
-  m_in_flight_flushes = false;
-  m_in_flight_flushes_cond.Signal();
-
-  if (m_in_flight_appends.empty() && !m_aio_scheduled && m_object_closed) {
-    // all remaining unsent appends should be redirected to new object
-    notify_handler_unlock();
-  } else {
-    m_lock->Unlock();
-  }
-}
-
-void ObjectRecorder::append_overflowed() {
-  ldout(m_cct, 10) << __func__ << ": " << m_oid << " append overflowed"
-                   << dendl;
-
-  assert(m_lock->is_locked());
-  assert(!m_in_flight_appends.empty());
-
-  cancel_append_task();
-
-  InFlightAppends in_flight_appends;
-  in_flight_appends.swap(m_in_flight_appends);
-
-  AppendBuffers restart_append_buffers;
-  for (InFlightAppends::iterator it = in_flight_appends.begin();
-       it != in_flight_appends.end(); ++it) {
-    restart_append_buffers.insert(restart_append_buffers.end(),
-                                  it->second.begin(), it->second.end());
-  }
-
-  restart_append_buffers.splice(restart_append_buffers.end(),
-                                m_append_buffers,
-                                m_append_buffers.begin(),
-                                m_append_buffers.end());
-  restart_append_buffers.swap(m_append_buffers);
-
-  for (AppendBuffers::const_iterator it = m_append_buffers.begin();
-       it != m_append_buffers.end(); ++it) {
-    ldout(m_cct, 20) << __func__ << ": overflowed " << *it->first
-                     << dendl;
-    it->first->detach();
-  }
-}
-
-void ObjectRecorder::send_appends(AppendBuffers *append_buffers) {
-  assert(m_lock->is_locked());
-  assert(!append_buffers->empty());
-
-  for (AppendBuffers::iterator it = append_buffers->begin();
-       it != append_buffers->end(); ++it) {
-    ldout(m_cct, 20) << __func__ << ": flushing " << *it->first
-                     << dendl;
-    it->first->set_flush_in_progress();
-    m_size += it->second.length();
-  }
-
-  m_pending_buffers.splice(m_pending_buffers.end(), *append_buffers,
-                           append_buffers->begin(), append_buffers->end());
-  if (!m_aio_scheduled) {
-    m_op_work_queue->queue(new FunctionContext([this] (int r) {
-        send_appends_aio();
-    }));
-    m_aio_scheduled = true;
-  }
-}
-
-void ObjectRecorder::send_appends_aio() {
-  AppendBuffers *append_buffers;
-  uint64_t append_tid;
-  {
-    Mutex::Locker locker(*m_lock);
-    append_tid = m_append_tid++;
-    m_in_flight_tids.insert(append_tid);
-
-    // safe to hold pointer outside lock until op is submitted
-    append_buffers = &m_in_flight_appends[append_tid];
-    append_buffers->swap(m_pending_buffers);
-  }
-
-  ldout(m_cct, 10) << __func__ << ": " << m_oid << " flushing journal tid="
-                   << append_tid << dendl;
-  C_AppendFlush *append_flush = new C_AppendFlush(this, append_tid);
-  C_Gather *gather_ctx = new C_Gather(m_cct, append_flush);
-
-  librados::ObjectWriteOperation op;
-  client::guard_append(&op, m_soft_max_size);
-  for (AppendBuffers::iterator it = append_buffers->begin();
-       it != append_buffers->end(); ++it) {
-    ldout(m_cct, 20) << __func__ << ": flushing " << *it->first
-                     << dendl;
-    op.append(it->second);
-    op.set_op_flags2(CEPH_OSD_OP_FLAG_FADVISE_DONTNEED);
-  }
-
-  librados::AioCompletion *rados_completion =
-    librados::Rados::aio_create_completion(gather_ctx->new_sub(), nullptr,
-                                           utils::rados_ctx_callback);
-  int r = m_ioctx.aio_operate(m_oid, rados_completion, &op);
-  assert(r == 0);
-  rados_completion->release();
-
-  {
-    m_lock->Lock();
-    if (m_pending_buffers.empty()) {
-      m_aio_scheduled = false;
-      if (m_in_flight_appends.empty() && m_object_closed) {
-        // all remaining unsent appends should be redirected to new object
-        notify_handler_unlock();
-      } else {
-        m_lock->Unlock();
-      }
-    } else {
-      // additional pending items -- reschedule
-      m_op_work_queue->queue(new FunctionContext([this] (int r) {
-          send_appends_aio();
-        }));
-      m_lock->Unlock();
-    }
-  }
-
-  // allow append op to complete
-  gather_ctx->activate();
-}
-
-void ObjectRecorder::notify_handler_unlock() {
-  assert(m_lock->is_locked());
-  if (m_object_closed) {
-    m_lock->Unlock();
-    m_handler->closed(this);
-  } else {
-    // TODO need to delay completion until after aio_notify completes
-    m_lock->Unlock();
-    m_handler->overflow(this);
-  }
-}
-
-} // namespace journal