1 /* Copyright (c) 2009, 2010 Nicira Networks.
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:
7 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 /* Open vSwitch Database Interface Definition Language (OVSDB IDL).
21 * The OVSDB IDL maintains an in-memory replica of a database. It issues RPC
22 * requests to an OVSDB database server and parses the responses, converting
23 * raw JSON into data structures that are easier for clients to digest. Most
24 * notably, references to rows via UUID become C pointers.
26 * The IDL also assists with issuing database transactions. The client creates
27 * a transaction, manipulates the IDL data structures, and commits or aborts
28 * the transaction. The IDL then composes and issues the necessary JSON-RPC
29 * requests and reports to the client whether the transaction completed
36 #include "ovsdb-types.h"
40 struct ovsdb_idl_class;
41 struct ovsdb_idl_column;
42 struct ovsdb_idl_table_class;
45 struct ovsdb_idl *ovsdb_idl_create(const char *remote,
46 const struct ovsdb_idl_class *);
47 void ovsdb_idl_destroy(struct ovsdb_idl *);
49 bool ovsdb_idl_run(struct ovsdb_idl *);
50 void ovsdb_idl_wait(struct ovsdb_idl *);
52 unsigned int ovsdb_idl_get_seqno(const struct ovsdb_idl *);
53 bool ovsdb_idl_has_ever_connected(const struct ovsdb_idl *);
54 void ovsdb_idl_force_reconnect(struct ovsdb_idl *);
56 void ovsdb_idl_set_write_only(struct ovsdb_idl *,
57 const struct ovsdb_idl_column *);
58 void ovsdb_idl_omit(struct ovsdb_idl *, const struct ovsdb_idl_column *);
60 const struct ovsdb_idl_row *ovsdb_idl_get_row_for_uuid(
61 const struct ovsdb_idl *, const struct ovsdb_idl_table_class *,
63 const struct ovsdb_idl_row *ovsdb_idl_first_row(
64 const struct ovsdb_idl *, const struct ovsdb_idl_table_class *);
65 const struct ovsdb_idl_row *ovsdb_idl_next_row(const struct ovsdb_idl_row *);
67 const struct ovsdb_datum *ovsdb_idl_read(const struct ovsdb_idl_row *,
68 const struct ovsdb_idl_column *);
69 const struct ovsdb_datum *ovsdb_idl_get(const struct ovsdb_idl_row *,
70 const struct ovsdb_idl_column *,
71 enum ovsdb_atomic_type key_type,
72 enum ovsdb_atomic_type value_type);
74 enum ovsdb_idl_txn_status {
75 TXN_UNCHANGED, /* Transaction didn't include any changes. */
76 TXN_INCOMPLETE, /* Commit in progress, please wait. */
77 TXN_ABORTED, /* ovsdb_idl_txn_abort() called. */
78 TXN_SUCCESS, /* Commit successful. */
79 TXN_TRY_AGAIN, /* Commit failed because a "verify" operation
80 * reported an inconsistency, due to a network
81 * problem, or other transient failure. */
82 TXN_ERROR /* Commit failed due to a hard error. */
85 const char *ovsdb_idl_txn_status_to_string(enum ovsdb_idl_txn_status);
87 struct ovsdb_idl_txn *ovsdb_idl_txn_create(struct ovsdb_idl *);
88 void ovsdb_idl_txn_add_comment(struct ovsdb_idl_txn *, const char *, ...)
90 void ovsdb_idl_txn_set_dry_run(struct ovsdb_idl_txn *);
91 void ovsdb_idl_txn_increment(struct ovsdb_idl_txn *, const char *table,
92 const char *column, const struct json *where);
93 void ovsdb_idl_txn_destroy(struct ovsdb_idl_txn *);
94 void ovsdb_idl_txn_wait(const struct ovsdb_idl_txn *);
95 enum ovsdb_idl_txn_status ovsdb_idl_txn_commit(struct ovsdb_idl_txn *);
96 enum ovsdb_idl_txn_status ovsdb_idl_txn_commit_block(struct ovsdb_idl_txn *);
97 void ovsdb_idl_txn_abort(struct ovsdb_idl_txn *);
99 const char *ovsdb_idl_txn_get_error(const struct ovsdb_idl_txn *);
101 int64_t ovsdb_idl_txn_get_increment_new_value(const struct ovsdb_idl_txn *);
102 const struct uuid *ovsdb_idl_txn_get_insert_uuid(const struct ovsdb_idl_txn *,
103 const struct uuid *);
105 void ovsdb_idl_txn_write(const struct ovsdb_idl_row *,
106 const struct ovsdb_idl_column *,
107 struct ovsdb_datum *);
108 void ovsdb_idl_txn_delete(const struct ovsdb_idl_row *);
109 const struct ovsdb_idl_row *ovsdb_idl_txn_insert(
110 struct ovsdb_idl_txn *, const struct ovsdb_idl_table_class *,
111 const struct uuid *);
113 struct ovsdb_idl *ovsdb_idl_txn_get_idl (struct ovsdb_idl_txn *);
115 #endif /* ovsdb-idl.h */