X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Fos%2FObjectMap.h;fp=src%2Fceph%2Fsrc%2Fos%2FObjectMap.h;h=32b423c2861681ac41b179a527cd7d9c8c7fbbe9;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git diff --git a/src/ceph/src/os/ObjectMap.h b/src/ceph/src/os/ObjectMap.h new file mode 100644 index 0000000..32b423c --- /dev/null +++ b/src/ceph/src/os/ObjectMap.h @@ -0,0 +1,170 @@ +// -*- 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 + * + * 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 OS_KEYVALUESTORE_H +#define OS_KEYVALUESTORE_H + +#include +#include +#include "include/memory.h" +#include "kv/KeyValueDB.h" +#include "common/hobject.h" + +class SequencerPosition; + +/** + * Encapsulates the FileStore key value store + * + * Implementations of this interface will be used to implement TMAP + */ +class ObjectMap { +public: + CephContext* cct; + /// Set keys and values from specified map + virtual int set_keys( + const ghobject_t &oid, ///< [in] object containing map + const map &set, ///< [in] key to value map to set + const SequencerPosition *spos=0 ///< [in] sequencer position + ) = 0; + + /// Set header + virtual int set_header( + const ghobject_t &oid, ///< [in] object containing map + const bufferlist &bl, ///< [in] header to set + const SequencerPosition *spos=0 ///< [in] sequencer position + ) = 0; + + /// Retrieve header + virtual int get_header( + const ghobject_t &oid, ///< [in] object containing map + bufferlist *bl ///< [out] header to set + ) = 0; + + /// Clear all map keys and values from oid + virtual int clear( + const ghobject_t &oid, ///< [in] object containing map + const SequencerPosition *spos=0 ///< [in] sequencer position + ) = 0; + + /// Clear all map keys and values in to_clear from oid + virtual int rm_keys( + const ghobject_t &oid, ///< [in] object containing map + const set &to_clear, ///< [in] Keys to clear + const SequencerPosition *spos=0 ///< [in] sequencer position + ) = 0; + + /// Clear all omap keys and the header + virtual int clear_keys_header( + const ghobject_t &oid, ///< [in] oid to clear + const SequencerPosition *spos=0 ///< [in] sequencer position + ) = 0; + + /// Get all keys and values + virtual int get( + const ghobject_t &oid, ///< [in] object containing map + bufferlist *header, ///< [out] Returned Header + map *out ///< [out] Returned keys and values + ) = 0; + + /// Get values for supplied keys + virtual int get_keys( + const ghobject_t &oid, ///< [in] object containing map + set *keys ///< [out] Keys defined on oid + ) = 0; + + /// Get values for supplied keys + virtual int get_values( + const ghobject_t &oid, ///< [in] object containing map + const set &keys, ///< [in] Keys to get + map *out ///< [out] Returned keys and values + ) = 0; + + /// Check key existence + virtual int check_keys( + const ghobject_t &oid, ///< [in] object containing map + const set &keys, ///< [in] Keys to check + set *out ///< [out] Subset of keys defined on oid + ) = 0; + + /// Get xattrs + virtual int get_xattrs( + const ghobject_t &oid, ///< [in] object + const set &to_get, ///< [in] keys to get + map *out ///< [out] subset of attrs/vals defined + ) = 0; + + /// Get all xattrs + virtual int get_all_xattrs( + const ghobject_t &oid, ///< [in] object + set *out ///< [out] attrs and values + ) = 0; + + /// set xattrs in to_set + virtual int set_xattrs( + const ghobject_t &oid, ///< [in] object + const map &to_set,///< [in] attrs/values to set + const SequencerPosition *spos=0 ///< [in] sequencer position + ) = 0; + + /// remove xattrs in to_remove + virtual int remove_xattrs( + const ghobject_t &oid, ///< [in] object + const set &to_remove, ///< [in] attrs to remove + const SequencerPosition *spos=0 ///< [in] sequencer position + ) = 0; + + + /// Clone keys from oid map to target map + virtual int clone( + const ghobject_t &oid, ///< [in] object containing map + const ghobject_t &target, ///< [in] target of clone + const SequencerPosition *spos=0 ///< [in] sequencer position + ) { return 0; } + + /// Rename map because of name change + virtual int rename( + const ghobject_t &from, ///< [in] object containing map + const ghobject_t &to, ///< [in] new name + const SequencerPosition *spos=0 ///< [in] sequencer position + ) { return 0; } + + /// For testing clone keys from oid map to target map using faster but more complex method + virtual int legacy_clone( + const ghobject_t &oid, ///< [in] object containing map + const ghobject_t &target, ///< [in] target of clone + const SequencerPosition *spos=0 ///< [in] sequencer position + ) { return 0; } + + /// Ensure all previous writes are durable + virtual int sync( + const ghobject_t *oid=0, ///< [in] object + const SequencerPosition *spos=0 ///< [in] Sequencer + ) { return 0; } + + virtual int check(std::ostream &out, bool repair = false, bool force = false) { return 0; } + + virtual void compact() {} + + typedef KeyValueDB::GenericIteratorImpl ObjectMapIteratorImpl; + typedef ceph::shared_ptr ObjectMapIterator; + virtual ObjectMapIterator get_iterator(const ghobject_t &oid) { + return ObjectMapIterator(); + } + + + ObjectMap(CephContext* cct) : cct(cct) {} + virtual ~ObjectMap() {} +}; + +#endif