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rgw_replica_log.h
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rgw_replica_log.h
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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
*
* 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.
*/
#ifndef RGW_REPLICA_LOG_H_
#define RGW_REPLICA_LOG_H_
#include <string>
#include "cls/replica_log/cls_replica_log_types.h"
#include "include/types.h"
#include "include/utime.h"
#include "include/rados/librados.hpp"
#include "rgw_common.h"
class RGWRados;
class CephContext;
using namespace std;
#define META_REPLICA_LOG_OBJ_PREFIX "meta.replicalog."
#define DATA_REPLICA_LOG_OBJ_PREFIX "data.replicalog."
typedef cls_replica_log_item_marker RGWReplicaItemMarker;
typedef cls_replica_log_progress_marker RGWReplicaProgressMarker;
struct RGWReplicaBounds {
string marker;
utime_t oldest_time;
list<RGWReplicaProgressMarker> markers;
void dump(Formatter *f) const;
void decode_json(JSONObj *obj);
};
class RGWReplicaLogger {
protected:
CephContext *cct;
RGWRados *store;
int open_ioctx(librados::IoCtx& ctx, const string& pool);
RGWReplicaLogger(RGWRados *_store);
int update_bound(const string& oid, const string& pool,
const string& daemon_id, const string& marker,
const utime_t& time,
const list<RGWReplicaItemMarker> *entries,
bool need_to_exist);
int write_bounds(const string& oid, const string& pool,
RGWReplicaBounds& bounds);
int delete_bound(const string& oid, const string& pool,
const string& daemon_id, bool purge_all,
bool need_to_exist);
int get_bounds(const string& oid, const string& pool,
RGWReplicaBounds& bounds);
};
class RGWReplicaObjectLogger : private RGWReplicaLogger {
string pool;
string prefix;
void get_shard_oid(int id, string& oid) {
char buf[16];
snprintf(buf, sizeof(buf), "%d", id);
oid = prefix + buf;
}
public:
RGWReplicaObjectLogger(RGWRados *_store,
const string& _pool,
const string& _prefix);
int create_log_objects(int shards);
int update_bound(int shard, const string& daemon_id, const string& marker,
const utime_t& time,
const list<RGWReplicaItemMarker> *entries) {
string oid;
get_shard_oid(shard, oid);
return RGWReplicaLogger::update_bound(oid, pool,
daemon_id, marker, time, entries, false);
}
int delete_bound(int shard, const string& daemon_id, bool purge_all) {
string oid;
get_shard_oid(shard, oid);
return RGWReplicaLogger::delete_bound(oid, pool,
daemon_id, purge_all, false);
}
int get_bounds(int shard, RGWReplicaBounds& bounds) {
string oid;
get_shard_oid(shard, oid);
return RGWReplicaLogger::get_bounds(oid, pool, bounds);
}
};
class RGWReplicaBucketLogger : private RGWReplicaLogger {
string pool;
string prefix;
string obj_name(const rgw_bucket& bucket, int shard_id, bool index_by_instance);
public:
RGWReplicaBucketLogger(RGWRados *_store);
int update_bound(const rgw_bucket& bucket, int shard_id, const string& daemon_id,
const string& marker, const utime_t& time,
const list<RGWReplicaItemMarker> *entries);
int delete_bound(const rgw_bucket& bucket, int shard_id, const string& daemon_id, bool purge_all);
int get_bounds(const rgw_bucket& bucket, int shard_id, RGWReplicaBounds& bounds);
int convert_old_bounds(const rgw_bucket& bucket, int shard_id, RGWReplicaBounds& bounds);
};
#endif /* RGW_REPLICA_LOG_H_ */