ovsdb/ovsdb.h

   1 /* Copyright (c) 2009, 2010, 2011 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 "hmap.h"
  21 #include "list.h"
  22 #include "shash.h"
  23
  24 struct json;
  25 struct ovsdb_log;
  26 struct ovsdb_session;
  27 struct ovsdb_txn;
  28 struct uuid;
  29
  30 /* Database schema. */
  31 struct ovsdb_schema {
  32     char *name;
  33     char *version;
  34     char *cksum;
  35     struct shash tables;        /* Contains "struct ovsdb_table_schema *"s. */
  36 };
  37
  38 struct ovsdb_schema *ovsdb_schema_create(const char *name,
  39                                          const char *version,
  40                                          const char *cksum);
  41 struct ovsdb_schema *ovsdb_schema_clone(const struct ovsdb_schema *);
  42 void ovsdb_schema_destroy(struct ovsdb_schema *);
  43
  44 struct ovsdb_error *ovsdb_schema_from_file(const char *file_name,
  45                                            struct ovsdb_schema **)
  46     WARN_UNUSED_RESULT;
  47 struct ovsdb_error *ovsdb_schema_from_json(struct json *,
  48                                            struct ovsdb_schema **)
  49     WARN_UNUSED_RESULT;
  50 struct json *ovsdb_schema_to_json(const struct ovsdb_schema *);
  51
  52 bool ovsdb_schema_equal(const struct ovsdb_schema *,
  53                         const struct ovsdb_schema *);
  54 \f
  55 /* Database. */
  56 struct ovsdb {
  57     struct ovsdb_schema *schema;
  58     struct list replicas;       /* Contains "struct ovsdb_replica"s. */
  59     struct shash tables;        /* Contains "struct ovsdb_table *"s. */
  60
  61     /* Triggers. */
  62     struct list triggers;       /* Contains "struct ovsdb_trigger"s. */
  63     bool run_triggers;
  64 };
  65
  66 struct ovsdb *ovsdb_create(struct ovsdb_schema *);
  67 void ovsdb_destroy(struct ovsdb *);
  68
  69 struct ovsdb_error *ovsdb_from_json(const struct json *, struct ovsdb **)
  70     WARN_UNUSED_RESULT;
  71 struct json *ovsdb_to_json(const struct ovsdb *);
  72
  73 struct ovsdb_table *ovsdb_get_table(const struct ovsdb *, const char *);
  74
  75 struct json *ovsdb_execute(struct ovsdb *, const struct ovsdb_session *,
  76                            const struct json *params,
  77                            long long int elapsed_msec,
  78                            long long int *timeout_msec);
  79 \f
  80 /* Database replication. */
  81
  82 struct ovsdb_replica {
  83     struct list node;           /* Element in "struct ovsdb" replicas list. */
  84     const struct ovsdb_replica_class *class;
  85 };
  86
  87 struct ovsdb_replica_class {
  88     struct ovsdb_error *(*commit)(struct ovsdb_replica *,
  89                                   const struct ovsdb_txn *, bool durable);
  90     void (*destroy)(struct ovsdb_replica *);
  91 };
  92
  93 void ovsdb_replica_init(struct ovsdb_replica *,
  94                         const struct ovsdb_replica_class *);
  95
  96 void ovsdb_add_replica(struct ovsdb *, struct ovsdb_replica *);
  97 void ovsdb_remove_replica(struct ovsdb *, struct ovsdb_replica *);
  98
  99 #endif /* ovsdb/ovsdb.h */