ovsdb/ovsdb.h

   1 /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2017 Nicira, Inc.
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #ifndef OVSDB_OVSDB_H
  17 #define OVSDB_OVSDB_H 1
  18
  19 #include "compiler.h"
  20 #include "openvswitch/hmap.h"
  21 #include "openvswitch/list.h"
  22 #include "openvswitch/shash.h"
  23 #include "openvswitch/uuid.h"
  24
  25 struct json;
  26 struct ovsdb_log;
  27 struct ovsdb_session;
  28 struct ovsdb_txn;
  29 struct simap;
  30
  31 /* Database schema. */
  32 struct ovsdb_schema {
  33     char *name;
  34     char *version;
  35     char *cksum;
  36     struct shash tables;        /* Contains "struct ovsdb_table_schema *"s. */
  37 };
  38
  39 struct ovsdb_schema *ovsdb_schema_create(const char *name,
  40                                          const char *version,
  41                                          const char *cksum);
  42 struct ovsdb_schema *ovsdb_schema_clone(const struct ovsdb_schema *);
  43 void ovsdb_schema_destroy(struct ovsdb_schema *);
  44
  45 struct ovsdb_error *ovsdb_schema_from_file(const char *file_name,
  46                                            struct ovsdb_schema **)
  47     OVS_WARN_UNUSED_RESULT;
  48 struct ovsdb_error *ovsdb_schema_from_json(const struct json *,
  49                                            struct ovsdb_schema **)
  50     OVS_WARN_UNUSED_RESULT;
  51 struct json *ovsdb_schema_to_json(const struct ovsdb_schema *);
  52
  53 bool ovsdb_schema_equal(const struct ovsdb_schema *,
  54                         const struct ovsdb_schema *);
  55
  56 struct ovsdb_error *ovsdb_schema_check_for_ephemeral_columns(
  57     const struct ovsdb_schema *) OVS_WARN_UNUSED_RESULT;
  58 void ovsdb_schema_persist_ephemeral_columns(struct ovsdb_schema *,
  59                                             const char *filename);
  60
  61 struct ovsdb_version {
  62     unsigned int x;
  63     unsigned int y;
  64     unsigned int z;
  65 };
  66 bool ovsdb_parse_version(const char *, struct ovsdb_version *);
  67 bool ovsdb_is_valid_version(const char *);
  68 \f
  69 /* Database. */
  70 struct ovsdb_txn_history_node {
  71     struct ovs_list node; /* Element in struct ovsdb's txn_history list */
  72     struct ovsdb_txn *txn;
  73 };
  74
  75 struct ovsdb {
  76     char *name;
  77     struct ovsdb_schema *schema;
  78     struct ovsdb_storage *storage; /* If nonnull, log for transactions. */
  79     struct uuid prereq;
  80     struct ovs_list monitors;   /* Contains "struct ovsdb_monitor"s. */
  81     struct shash tables;        /* Contains "struct ovsdb_table *"s. */
  82
  83     /* Triggers. */
  84     struct ovs_list triggers;   /* Contains "struct ovsdb_trigger"s. */
  85     bool run_triggers;
  86     bool run_triggers_now;
  87
  88     struct ovsdb_table *rbac_role;
  89
  90     /* History trasanctions for incremental monitor transfer. */
  91     bool need_txn_history;     /* Need to maintain history of transactions. */
  92     unsigned int n_txn_history; /* Current number of history transactions. */
  93     struct ovs_list txn_history; /* Contains "struct ovsdb_txn_history_node. */
  94 };
  95
  96 struct ovsdb *ovsdb_create(struct ovsdb_schema *, struct ovsdb_storage *);
  97 void ovsdb_destroy(struct ovsdb *);
  98
  99 void ovsdb_get_memory_usage(const struct ovsdb *, struct simap *usage);
 100
 101 struct ovsdb_table *ovsdb_get_table(const struct ovsdb *, const char *);
 102
 103 struct ovsdb_txn *ovsdb_execute_compose(
 104     struct ovsdb *, const struct ovsdb_session *, const struct json *params,
 105     bool read_only, const char *role, const char *id,
 106     long long int elapsed_msec, long long int *timeout_msec,
 107     bool *durable, struct json **);
 108
 109 struct json *ovsdb_execute(struct ovsdb *, const struct ovsdb_session *,
 110                            const struct json *params, bool read_only,
 111                            const char *role, const char *id,
 112                            long long int elapsed_msec,
 113                            long long int *timeout_msec);
 114
 115 struct ovsdb_error *ovsdb_snapshot(struct ovsdb *) OVS_WARN_UNUSED_RESULT;
 116
 117 void ovsdb_replace(struct ovsdb *dst, struct ovsdb *src);
 118
 119 #endif /* ovsdb/ovsdb.h */