ctdb/common/common.h

   1 /*
   2    ctdb database library
   3
   4    Copyright (C) Amitay Isaacs  2015
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #ifndef __CTDB_COMMON_H__
  21 #define __CTDB_COMMON_H__
  22
  23 /* From common/ctdb_io.c */
  24
  25 int ctdb_queue_length(struct ctdb_queue *queue);
  26
  27 int ctdb_queue_send(struct ctdb_queue *queue, uint8_t *data, uint32_t length);
  28
  29 int ctdb_queue_set_fd(struct ctdb_queue *queue, int fd);
  30
  31 struct ctdb_queue *ctdb_queue_setup(struct ctdb_context *ctdb,
  32                                     TALLOC_CTX *mem_ctx, int fd, int alignment,
  33                                     ctdb_queue_cb_fn_t callback,
  34                                     void *private_data, const char *fmt, ...)
  35                                     PRINTF_ATTRIBUTE(7,8);
  36
  37 /* From common/ctdb_ltdb.c */
  38
  39 struct ctdb_db_context *ctdb_db_handle(struct ctdb_context *ctdb,
  40                                        const char *name);
  41
  42 uint32_t ctdb_lmaster(struct ctdb_context *ctdb, const TDB_DATA *key);
  43
  44 int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
  45                     TDB_DATA key, struct ctdb_ltdb_header *header,
  46                     TALLOC_CTX *mem_ctx, TDB_DATA *data);
  47
  48 int ctdb_ltdb_fetch_with_header(struct ctdb_db_context *ctdb_db,
  49                                 TDB_DATA key, struct ctdb_ltdb_header *header,
  50                                 TALLOC_CTX *mem_ctx, TDB_DATA *data);
  51
  52 int ctdb_ltdb_store(struct ctdb_db_context *ctdb_db, TDB_DATA key,
  53                     struct ctdb_ltdb_header *header, TDB_DATA data);
  54
  55 int ctdb_ltdb_lock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
  56
  57 int ctdb_ltdb_unlock(struct ctdb_db_context *ctdb_db, TDB_DATA key);
  58
  59 int ctdb_ltdb_delete(struct ctdb_db_context *ctdb_db, TDB_DATA key);
  60
  61 int ctdb_trackingdb_add_pnn(struct ctdb_context *ctdb, TDB_DATA *data, uint32_t pnn);
  62
  63 typedef void (*ctdb_trackingdb_cb)(struct ctdb_context *ctdb, uint32_t pnn,
  64                                    void *private_data);
  65
  66 void ctdb_trackingdb_traverse(struct ctdb_context *ctdb, TDB_DATA data,
  67                               ctdb_trackingdb_cb cb, void *private_data);
  68
  69 int ctdb_null_func(struct ctdb_call_info *call);
  70
  71 int ctdb_fetch_func(struct ctdb_call_info *call);
  72
  73 int ctdb_fetch_with_header_func(struct ctdb_call_info *call);
  74
  75 /* from common/ctdb_util.c */
  76
  77 const char *ctdb_errstr(struct ctdb_context *ctdb);
  78
  79 void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...);
  80
  81 void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
  82
  83 void ctdb_die(struct ctdb_context *ctdb, const char *msg);
  84
  85 bool ctdb_set_helper(const char *type, char *helper, size_t size,
  86                      const char *envvar,
  87                      const char *dir, const char *file);
  88
  89 void ctdb_external_trace(void);
  90
  91 int ctdb_parse_address(TALLOC_CTX *mem_ctx, const char *str,
  92                        ctdb_sock_addr *address);
  93
  94 bool ctdb_same_address(ctdb_sock_addr *a1, ctdb_sock_addr *a2);
  95
  96 uint32_t ctdb_hash(const TDB_DATA *key);
  97
  98 struct ctdb_rec_data_old *ctdb_marshall_record(TALLOC_CTX *mem_ctx,
  99                                                uint32_t reqid,
 100                                                TDB_DATA key,
 101                                                struct ctdb_ltdb_header *header,
 102                                                TDB_DATA data);
 103
 104 struct ctdb_marshall_buffer *ctdb_marshall_add(TALLOC_CTX *mem_ctx,
 105                                                struct ctdb_marshall_buffer *m,
 106                                                uint64_t db_id,
 107                                                uint32_t reqid,
 108                                                TDB_DATA key,
 109                                                struct ctdb_ltdb_header *header,
 110                                                TDB_DATA data);
 111
 112 TDB_DATA ctdb_marshall_finish(struct ctdb_marshall_buffer *m);
 113
 114 struct ctdb_rec_data_old *ctdb_marshall_loop_next(
 115                                         struct ctdb_marshall_buffer *m,
 116                                         struct ctdb_rec_data_old *r,
 117                                         uint32_t *reqid,
 118                                         struct ctdb_ltdb_header *header,
 119                                         TDB_DATA *key, TDB_DATA *data);
 120
 121 void ctdb_canonicalize_ip(const ctdb_sock_addr *ip, ctdb_sock_addr *cip);
 122
 123 bool ctdb_same_ip(const ctdb_sock_addr *tip1, const ctdb_sock_addr *tip2);
 124
 125 bool ctdb_same_sockaddr(const ctdb_sock_addr *ip1, const ctdb_sock_addr *ip2);
 126
 127 char *ctdb_addr_to_str(ctdb_sock_addr *addr);
 128
 129 unsigned ctdb_addr_to_port(ctdb_sock_addr *addr);
 130
 131 struct ctdb_node_map_old *ctdb_read_nodes_file(TALLOC_CTX *mem_ctx,
 132                                                const char *nlist);
 133
 134 struct ctdb_node_map_old *ctdb_node_list_to_map(struct ctdb_node **nodes,
 135                                                 uint32_t num_nodes,
 136                                                 TALLOC_CTX *mem_ctx);
 137
 138 const char *runstate_to_string(enum ctdb_runstate runstate);
 139
 140 enum ctdb_runstate runstate_from_string(const char *label);
 141
 142 void ctdb_set_runstate(struct ctdb_context *ctdb, enum ctdb_runstate runstate);
 143
 144 uint32_t *ctdb_key_to_idkey(TALLOC_CTX *mem_ctx, TDB_DATA key);
 145
 146 #endif /* __CTDB_COMMON_H__ */