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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2014 David Zafman <dzafman@redhat.com> | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | #include <string> | |
15 | ||
16 | #ifndef CEPH_LIBRADOS_LISTOBJECTIMPL_H | |
17 | #define CEPH_LIBRADOS_LISTOBJECTIMPL_H | |
18 | ||
19 | #include <include/rados/librados.hpp> | |
20 | ||
21 | namespace librados { | |
22 | struct ListObjectImpl { | |
23 | std::string nspace; | |
24 | std::string oid; | |
25 | std::string locator; | |
26 | ||
27 | ListObjectImpl() {} | |
28 | ListObjectImpl(std::string n, std::string o, std::string l): | |
29 | nspace(n), oid(o), locator(l) {} | |
30 | ||
31 | const std::string& get_nspace() const { return nspace; } | |
32 | const std::string& get_oid() const { return oid; } | |
33 | const std::string& get_locator() const { return locator; } | |
34 | }; | |
35 | WRITE_EQ_OPERATORS_3(ListObjectImpl, nspace, oid, locator) | |
36 | WRITE_CMP_OPERATORS_3(ListObjectImpl, nspace, oid, locator) | |
37 | inline std::ostream& operator<<(std::ostream& out, const struct ListObjectImpl& lop) { | |
38 | out << (lop.nspace.size() ? lop.nspace + "/" : "") << lop.oid | |
39 | << (lop.locator.size() ? "@" + lop.locator : ""); | |
40 | return out; | |
41 | } | |
42 | ||
43 | struct ObjListCtx; | |
44 | ||
45 | class NObjectIteratorImpl { | |
46 | public: | |
47 | NObjectIteratorImpl() {} | |
48 | ~NObjectIteratorImpl(); | |
49 | NObjectIteratorImpl(const NObjectIteratorImpl &rhs); | |
50 | NObjectIteratorImpl& operator=(const NObjectIteratorImpl& rhs); | |
51 | ||
52 | bool operator==(const NObjectIteratorImpl& rhs) const; | |
53 | bool operator!=(const NObjectIteratorImpl& rhs) const; | |
54 | const ListObject& operator*() const; | |
55 | const ListObject* operator->() const; | |
56 | NObjectIteratorImpl &operator++(); // Preincrement | |
57 | NObjectIteratorImpl operator++(int); // Postincrement | |
58 | const ListObject *get_listobjectp() { return &cur_obj; } | |
59 | friend class IoCtx; | |
60 | friend struct ListObjectImpl; | |
61 | //friend class ListObject; | |
62 | friend class NObjectIterator; | |
63 | ||
64 | /// get current hash position of the iterator, rounded to the current pg | |
65 | uint32_t get_pg_hash_position() const; | |
66 | ||
67 | /// move the iterator to a given hash position. this may (will!) be rounded to the nearest pg. | |
68 | uint32_t seek(uint32_t pos); | |
69 | ||
70 | /// move the iterator to a given cursor position | |
71 | uint32_t seek(const librados::ObjectCursor& cursor); | |
72 | ||
73 | /// get current cursor position | |
74 | librados::ObjectCursor get_cursor(); | |
75 | ||
76 | void set_filter(const bufferlist &bl); | |
77 | ||
78 | private: | |
79 | NObjectIteratorImpl(ObjListCtx *ctx_); | |
80 | void get_next(); | |
81 | ceph::shared_ptr < ObjListCtx > ctx; | |
82 | ListObject cur_obj; | |
83 | }; | |
84 | ||
85 | } | |
86 | #endif |