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.
24 #include "ovsdb-error.h"
25 #include "ovsdb-parser.h"
26 #include "ovsdb-types.h"
30 add_column(struct ovsdb_table_schema *ts, struct ovsdb_column *column)
32 assert(!shash_find(&ts->columns, column->name));
33 column->index = shash_count(&ts->columns);
34 shash_add(&ts->columns, column->name, column);
37 struct ovsdb_table_schema *
38 ovsdb_table_schema_create(const char *name, bool mutable)
40 struct ovsdb_column *uuid, *version;
41 struct ovsdb_table_schema *ts;
43 ts = xzalloc(sizeof *ts);
44 ts->name = xstrdup(name);
45 ts->mutable = mutable;
46 shash_init(&ts->columns);
48 uuid = ovsdb_column_create("_uuid", false, true, &ovsdb_type_uuid);
50 assert(uuid->index == OVSDB_COL_UUID);
52 version = ovsdb_column_create("_version", false, false, &ovsdb_type_uuid);
53 add_column(ts, version);
54 assert(version->index == OVSDB_COL_VERSION);
59 struct ovsdb_table_schema *
60 ovsdb_table_schema_clone(const struct ovsdb_table_schema *old)
62 struct ovsdb_table_schema *new;
63 struct shash_node *node;
65 new = ovsdb_table_schema_create(old->name, old->mutable);
66 SHASH_FOR_EACH (node, &old->columns) {
67 const struct ovsdb_column *column = node->data;
69 if (column->name[0] == '_') {
70 /* Added automatically by ovsdb_table_schema_create(). */
74 add_column(new, ovsdb_column_clone(column));
80 ovsdb_table_schema_destroy(struct ovsdb_table_schema *ts)
82 struct shash_node *node;
84 SHASH_FOR_EACH (node, &ts->columns) {
85 ovsdb_column_destroy(node->data);
87 shash_destroy(&ts->columns);
93 ovsdb_table_schema_from_json(const struct json *json, const char *name,
94 struct ovsdb_table_schema **tsp)
96 struct ovsdb_table_schema *ts;
97 const struct json *columns, *mutable;
98 struct shash_node *node;
99 struct ovsdb_parser parser;
100 struct ovsdb_error *error;
104 ovsdb_parser_init(&parser, json, "table schema for table %s", name);
105 columns = ovsdb_parser_member(&parser, "columns", OP_OBJECT);
106 mutable = ovsdb_parser_member(&parser, "mutable",
107 OP_TRUE | OP_FALSE | OP_OPTIONAL);
108 error = ovsdb_parser_finish(&parser);
113 if (shash_is_empty(json_object(columns))) {
114 return ovsdb_syntax_error(json, NULL,
115 "table must have at least one column");
118 ts = ovsdb_table_schema_create(name,
119 mutable ? json_boolean(mutable) : true);
120 SHASH_FOR_EACH (node, json_object(columns)) {
121 struct ovsdb_column *column;
123 if (node->name[0] == '_') {
124 error = ovsdb_syntax_error(json, NULL, "names beginning with "
125 "\"_\" are reserved");
126 } else if (!ovsdb_parser_is_id(node->name)) {
127 error = ovsdb_syntax_error(json, NULL, "name must be a valid id");
129 error = ovsdb_column_from_json(node->data, node->name, &column);
132 ovsdb_table_schema_destroy(ts);
136 add_column(ts, column);
143 ovsdb_table_schema_to_json(const struct ovsdb_table_schema *ts)
145 struct json *json, *columns;
146 struct shash_node *node;
148 json = json_object_create();
150 json_object_put(json, "mutable", json_boolean_create(false));
153 columns = json_object_create();
155 SHASH_FOR_EACH (node, &ts->columns) {
156 const struct ovsdb_column *column = node->data;
157 if (node->name[0] != '_') {
158 json_object_put(columns, column->name,
159 ovsdb_column_to_json(column));
162 json_object_put(json, "columns", columns);
167 const struct ovsdb_column *
168 ovsdb_table_schema_get_column(const struct ovsdb_table_schema *ts,
171 return shash_find_data(&ts->columns, name);
175 ovsdb_table_create(struct ovsdb_table_schema *ts)
177 struct ovsdb_table *table;
179 table = xmalloc(sizeof *table);
181 table->txn_table = NULL;
182 hmap_init(&table->rows);
188 ovsdb_table_destroy(struct ovsdb_table *table)
191 struct ovsdb_row *row, *next;
193 HMAP_FOR_EACH_SAFE (row, next, struct ovsdb_row, hmap_node,
195 ovsdb_row_destroy(row);
197 hmap_destroy(&table->rows);
199 ovsdb_table_schema_destroy(table->schema);
204 const struct ovsdb_row *
205 ovsdb_table_get_row(const struct ovsdb_table *table, const struct uuid *uuid)
207 struct ovsdb_row *row;
209 HMAP_FOR_EACH_WITH_HASH (row, struct ovsdb_row, hmap_node, uuid_hash(uuid),
211 if (uuid_equals(ovsdb_row_get_uuid(row), uuid)) {
219 /* This is probably not the function you want. Use ovsdb_txn_row_modify()
222 ovsdb_table_put_row(struct ovsdb_table *table, struct ovsdb_row *row)
224 const struct uuid *uuid = ovsdb_row_get_uuid(row);
225 if (!ovsdb_table_get_row(table, uuid)) {
226 hmap_insert(&table->rows, &row->hmap_node, uuid_hash(uuid));