Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 209 insertions, 0 deletions

diff --git a/src/mds/LogEvent.cc b/src/mds/LogEvent.cc
new file mode 100644
index 00000000..3e321531
--- /dev/null
+++ b/src/mds/LogEvent.cc
@@ -0,0 +1,209 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software 
+ * Foundation.  See file COPYING.
+ * 
+ */
+
+#include "common/config.h"
+#include "LogEvent.h"
+
+#include "MDSRank.h"
+
+// events i know of
+#include "events/ESubtreeMap.h"
+#include "events/EExport.h"
+#include "events/EImportStart.h"
+#include "events/EImportFinish.h"
+#include "events/EFragment.h"
+
+#include "events/EResetJournal.h"
+#include "events/ESession.h"
+#include "events/ESessions.h"
+
+#include "events/EUpdate.h"
+#include "events/ESlaveUpdate.h"
+#include "events/EOpen.h"
+#include "events/ECommitted.h"
+
+#include "events/ETableClient.h"
+#include "events/ETableServer.h"
+
+#include "events/ENoOp.h"
+
+#define dout_context g_ceph_context
+
+
+std::unique_ptr<LogEvent> LogEvent::decode_event(bufferlist::const_iterator p)
+{
+  // parse type, length
+  EventType type;
+  std::unique_ptr<LogEvent> event;
+  using ceph::decode;
+  decode(type, p);
+
+  if (EVENT_NEW_ENCODING == type) {
+    try {
+      DECODE_START(1, p);
+      decode(type, p);
+      event = decode_event(p, type);
+      DECODE_FINISH(p);
+    }
+    catch (const buffer::error &e) {
+      generic_dout(0) << "failed to decode LogEvent (type maybe " << type << ")" << dendl;
+      return NULL;
+    }
+  } else { // we are using classic encoding
+    event = decode_event(p, type);
+  }
+  return event;
+}
+
+
+std::string_view LogEvent::get_type_str() const
+{
+  switch(_type) {
+  case EVENT_SUBTREEMAP: return "SUBTREEMAP";
+  case EVENT_SUBTREEMAP_TEST: return "SUBTREEMAP_TEST";
+  case EVENT_EXPORT: return "EXPORT";
+  case EVENT_IMPORTSTART: return "IMPORTSTART";
+  case EVENT_IMPORTFINISH: return "IMPORTFINISH";
+  case EVENT_FRAGMENT: return "FRAGMENT";
+  case EVENT_RESETJOURNAL: return "RESETJOURNAL";
+  case EVENT_SESSION: return "SESSION";
+  case EVENT_SESSIONS_OLD: return "SESSIONS_OLD";
+  case EVENT_SESSIONS: return "SESSIONS";
+  case EVENT_UPDATE: return "UPDATE";
+  case EVENT_SLAVEUPDATE: return "SLAVEUPDATE";
+  case EVENT_OPEN: return "OPEN";
+  case EVENT_COMMITTED: return "COMMITTED";
+  case EVENT_TABLECLIENT: return "TABLECLIENT";
+  case EVENT_TABLESERVER: return "TABLESERVER";
+  case EVENT_NOOP: return "NOOP";
+
+  default:
+    generic_dout(0) << "get_type_str: unknown type " << _type << dendl;
+    return "UNKNOWN";
+  }
+}
+
+const std::map<std::string, LogEvent::EventType> LogEvent::types = {
+  {"SUBTREEMAP", EVENT_SUBTREEMAP},
+  {"SUBTREEMAP_TEST", EVENT_SUBTREEMAP_TEST},
+  {"EXPORT", EVENT_EXPORT},
+  {"IMPORTSTART", EVENT_IMPORTSTART},
+  {"IMPORTFINISH", EVENT_IMPORTFINISH},
+  {"FRAGMENT", EVENT_FRAGMENT},
+  {"RESETJOURNAL", EVENT_RESETJOURNAL},
+  {"SESSION", EVENT_SESSION},
+  {"SESSIONS_OLD", EVENT_SESSIONS_OLD},
+  {"SESSIONS", EVENT_SESSIONS},
+  {"UPDATE", EVENT_UPDATE},
+  {"SLAVEUPDATE", EVENT_SLAVEUPDATE},
+  {"OPEN", EVENT_OPEN},
+  {"COMMITTED", EVENT_COMMITTED},
+  {"TABLECLIENT", EVENT_TABLECLIENT},
+  {"TABLESERVER", EVENT_TABLESERVER},
+  {"NOOP", EVENT_NOOP}
+};
+
+/*
+ * Resolve type string to type enum
+ *
+ * Return -1 if not found
+ */
+LogEvent::EventType LogEvent::str_to_type(std::string_view str)
+{
+  return LogEvent::types.at(std::string(str));
+}
+
+
+std::unique_ptr<LogEvent> LogEvent::decode_event(bufferlist::const_iterator& p, LogEvent::EventType type)
+{
+  const auto length = p.get_remaining();
+  generic_dout(15) << "decode_log_event type " << type << ", size " << length << dendl;
+  
+  // create event
+  std::unique_ptr<LogEvent> le;
+  switch (type) {
+  case EVENT_SUBTREEMAP:
+    le = std::make_unique<ESubtreeMap>();
+    break;
+  case EVENT_SUBTREEMAP_TEST: 
+    le = std::make_unique<ESubtreeMap>();
+    le->set_type(type);
+    break;
+  case EVENT_EXPORT:
+    le = std::make_unique<EExport>();
+    break;
+  case EVENT_IMPORTSTART:
+    le = std::make_unique<EImportStart>();
+    break;
+  case EVENT_IMPORTFINISH:
+    le = std::make_unique<EImportFinish>();
+    break;
+  case EVENT_FRAGMENT:
+    le = std::make_unique<EFragment>();
+    break;
+  case EVENT_RESETJOURNAL:
+    le = std::make_unique<EResetJournal>();
+    break;
+  case EVENT_SESSION:
+    le = std::make_unique<ESession>();
+    break;
+  case EVENT_SESSIONS_OLD:
+    {
+      auto e = std::make_unique<ESessions>();
+      e->mark_old_encoding();
+      le = std::move(e);
+    }
+    break;
+  case EVENT_SESSIONS:
+    le = std::make_unique<ESessions>();
+    break;
+  case EVENT_UPDATE:
+    le = std::make_unique<EUpdate>();
+    break;
+  case EVENT_SLAVEUPDATE:
+    le = std::make_unique<ESlaveUpdate>();
+    break;
+  case EVENT_OPEN:
+    le = std::make_unique<EOpen>();
+    break;
+  case EVENT_COMMITTED:
+    le = std::make_unique<ECommitted>();
+    break;
+  case EVENT_TABLECLIENT:
+    le = std::make_unique<ETableClient>();
+    break;
+  case EVENT_TABLESERVER:
+    le = std::make_unique<ETableServer>();
+    break;
+  case EVENT_NOOP:
+    le = std::make_unique<ENoOp>();
+    break;
+  default:
+    generic_dout(0) << "uh oh, unknown log event type " << type << " length " << length << dendl;
+    return nullptr;
+  }
+
+  // decode
+  try {
+    le->decode(p);
+  }
+  catch (const buffer::error &e) {
+    generic_dout(0) << "failed to decode LogEvent type " << type << dendl;
+    return nullptr;
+  }
+
+  ceph_assert(p.end());
+  return le;
+}
+