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// -*- 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/EPeerUpdate.h"
#include "events/EOpen.h"
#include "events/ECommitted.h"
#include "events/EPurged.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_PEERUPDATE: return "PEERUPDATE";
case EVENT_OPEN: return "OPEN";
case EVENT_COMMITTED: return "COMMITTED";
case EVENT_PURGED: return "PURGED";
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},
{"PEERUPDATE", EVENT_PEERUPDATE},
{"OPEN", EVENT_OPEN},
{"COMMITTED", EVENT_COMMITTED},
{"PURGED", EVENT_PURGED},
{"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_PEERUPDATE:
le = std::make_unique<EPeerUpdate>();
break;
case EVENT_OPEN:
le = std::make_unique<EOpen>();
break;
case EVENT_COMMITTED:
le = std::make_unique<ECommitted>();
break;
case EVENT_PURGED:
le = std::make_unique<EPurged>();
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;
}
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