summaryrefslogtreecommitdiffstats
path: root/src/mds/LogEvent.cc
diff options
context:
space:
mode:
Diffstat (limited to 'src/mds/LogEvent.cc')
-rw-r--r--src/mds/LogEvent.cc209
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;
+}
+