2 This file is part of GNUnet
3 (C) 2004, 2005, 2006, 2007, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file datastore/datastore.hc
23 * @brief structs for communication between datastore service and API
24 * @author Christian Grothoff
30 #define DEBUG_DATASTORE GNUNET_YES
32 #include "gnunet_util_lib.h"
35 * Message from datastore service informing client about
36 * the current size of the datastore.
41 * Type is GNUNET_MESSAGE_TYPE_DATASTORE_RESERVE.
43 struct GNUNET_MessageHeader header;
48 uint32_t reserved GNUNET_PACKED;
51 * Number of bytes to reserve.
53 uint64_t amount GNUNET_PACKED;
56 * Number of items to reserve.
58 uint64_t entries GNUNET_PACKED;
63 * Message from datastore service informing client about
64 * the success or failure of a requested operation.
65 * This header is optionally followed by a variable-size,
66 * 0-terminated error message.
71 * Type is GNUNET_MESSAGE_TYPE_DATASTORE_STATUS.
73 struct GNUNET_MessageHeader header;
76 * Status code, -1 for errors.
78 int32_t status GNUNET_PACKED;
84 * Message from datastore client informing service that
85 * the remainder of the reserved bytes can now be released
88 struct ReleaseReserveMessage
91 * Type is GNUNET_MESSAGE_TYPE_DATASTORE_RELEASE_RESERVE.
93 struct GNUNET_MessageHeader header;
98 int32_t rid GNUNET_PACKED;
104 * Message to the datastore service asking about specific
110 * Type is GNUNET_MESSAGE_TYPE_DATASTORE_GET. Size
111 * can either be "sizeof(struct GetMessage)" or
112 * "sizeof(struct GetMessage) - sizeof(GNUNET_HashCode)"!
114 struct GNUNET_MessageHeader header;
117 * Desired content type.
119 uint32_t type GNUNET_PACKED;
122 * Desired key (optional). Check the "size" of the
123 * header to see if the key is actually present.
125 GNUNET_HashCode key GNUNET_PACKED;
131 * Message to the datastore service requesting an update
132 * to the priority or expiration for some content.
137 * Type is GNUNET_MESSAGE_TYPE_DATASTORE_UPDATE.
139 struct GNUNET_MessageHeader header;
142 * Desired priority increase.
144 int32_t priority GNUNET_PACKED;
147 * Desired new expiration time.
149 struct GNUNET_TIME_AbsoluteNBO expiration;
152 * Unique ID for the content.
160 * Message transmitting content from or to the datastore
166 * Type is either GNUNET_MESSAGE_TYPE_DATASTORE_PUT,
167 * GNUNET_MESSAGE_TYPE_DATASTORE_REMOVE or
168 * GNUNET_MESSAGE_TYPE_DATASTORE_DATA. Depending on the message
169 * type, some fields may simply have values of zero.
171 struct GNUNET_MessageHeader header;
174 * Reservation ID to use; use zero for none.
176 uint32_t rid GNUNET_PACKED;
179 * Number of bytes in the item (NBO).
181 uint32_t size GNUNET_PACKED;
184 * Type of the item (NBO), zero for remove.
186 uint32_t type GNUNET_PACKED;
189 * Priority of the item (NBO), zero for remove.
191 uint32_t priority GNUNET_PACKED;
194 * Desired anonymity level (NBO), zero for remove.
196 uint32_t anonymity GNUNET_PACKED;
199 * Unique ID for the content (can be used for UPDATE);
200 * can be zero for remove (which indicates that
201 * the datastore should use whatever UID matches
202 * the key and content).
207 * Expiration time (NBO); zero for remove.
209 struct GNUNET_TIME_AbsoluteNBO expiration;
212 * Key under which the item can be found.
214 GNUNET_HashCode key GNUNET_PACKED;