-/* Copyright (c) 2009, 2010 Nicira Networks
+/* Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "table.h"
-#include <assert.h>
+#include <limits.h>
#include "json.h"
#include "column.h"
static void
add_column(struct ovsdb_table_schema *ts, struct ovsdb_column *column)
{
- assert(!shash_find(&ts->columns, column->name));
+ ovs_assert(!shash_find(&ts->columns, column->name));
column->index = shash_count(&ts->columns);
shash_add(&ts->columns, column->name, column);
}
struct ovsdb_table_schema *
-ovsdb_table_schema_create(const char *name, const char *comment, bool mutable)
+ovsdb_table_schema_create(const char *name, bool mutable,
+ unsigned int max_rows, bool is_root)
{
struct ovsdb_column *uuid, *version;
struct ovsdb_table_schema *ts;
ts = xzalloc(sizeof *ts);
ts->name = xstrdup(name);
- ts->comment = comment ? xstrdup(comment) : NULL;
ts->mutable = mutable;
shash_init(&ts->columns);
+ ts->max_rows = max_rows;
+ ts->is_root = is_root;
- uuid = ovsdb_column_create(
- "_uuid", "Unique identifier for this row.",
- false, true, &ovsdb_type_uuid);
+ uuid = ovsdb_column_create("_uuid", false, true, &ovsdb_type_uuid);
add_column(ts, uuid);
- assert(uuid->index == OVSDB_COL_UUID);
+ ovs_assert(uuid->index == OVSDB_COL_UUID);
- version = ovsdb_column_create(
- "_version", "Unique identifier for this version of this row.",
- false, false, &ovsdb_type_uuid);
+ version = ovsdb_column_create("_version", false, false, &ovsdb_type_uuid);
add_column(ts, version);
- assert(version->index == OVSDB_COL_VERSION);
+ ovs_assert(version->index == OVSDB_COL_VERSION);
+
+ ts->n_indexes = 0;
+ ts->indexes = NULL;
return ts;
}
+struct ovsdb_table_schema *
+ovsdb_table_schema_clone(const struct ovsdb_table_schema *old)
+{
+ struct ovsdb_table_schema *new;
+ struct shash_node *node;
+ size_t i;
+
+ new = ovsdb_table_schema_create(old->name, old->mutable,
+ old->max_rows, old->is_root);
+ SHASH_FOR_EACH (node, &old->columns) {
+ const struct ovsdb_column *column = node->data;
+
+ if (column->name[0] == '_') {
+ /* Added automatically by ovsdb_table_schema_create(). */
+ continue;
+ }
+
+ add_column(new, ovsdb_column_clone(column));
+ }
+
+ new->n_indexes = old->n_indexes;
+ new->indexes = xmalloc(new->n_indexes * sizeof *new->indexes);
+ for (i = 0; i < new->n_indexes; i++) {
+ const struct ovsdb_column_set *old_index = &old->indexes[i];
+ struct ovsdb_column_set *new_index = &new->indexes[i];
+ size_t j;
+
+ ovsdb_column_set_init(new_index);
+ for (j = 0; j < old_index->n_columns; j++) {
+ const struct ovsdb_column *old_column = old_index->columns[j];
+ const struct ovsdb_column *new_column;
+
+ new_column = ovsdb_table_schema_get_column(new, old_column->name);
+ ovsdb_column_set_add(new_index, new_column);
+ }
+ }
+
+ return new;
+}
+
void
ovsdb_table_schema_destroy(struct ovsdb_table_schema *ts)
{
struct shash_node *node;
+ size_t i;
+
+ for (i = 0; i < ts->n_indexes; i++) {
+ ovsdb_column_set_destroy(&ts->indexes[i]);
+ }
+ free(ts->indexes);
SHASH_FOR_EACH (node, &ts->columns) {
ovsdb_column_destroy(node->data);
}
shash_destroy(&ts->columns);
- free(ts->comment);
free(ts->name);
free(ts);
}
struct ovsdb_table_schema **tsp)
{
struct ovsdb_table_schema *ts;
- const struct json *comment, *columns, *mutable;
+ const struct json *columns, *mutable, *max_rows, *is_root, *indexes;
struct shash_node *node;
struct ovsdb_parser parser;
struct ovsdb_error *error;
+ long long int n_max_rows;
*tsp = NULL;
ovsdb_parser_init(&parser, json, "table schema for table %s", name);
- comment = ovsdb_parser_member(&parser, "comment", OP_STRING | OP_OPTIONAL);
columns = ovsdb_parser_member(&parser, "columns", OP_OBJECT);
mutable = ovsdb_parser_member(&parser, "mutable",
OP_TRUE | OP_FALSE | OP_OPTIONAL);
+ max_rows = ovsdb_parser_member(&parser, "maxRows",
+ OP_INTEGER | OP_OPTIONAL);
+ is_root = ovsdb_parser_member(&parser, "isRoot", OP_BOOLEAN | OP_OPTIONAL);
+ indexes = ovsdb_parser_member(&parser, "indexes", OP_ARRAY | OP_OPTIONAL);
error = ovsdb_parser_finish(&parser);
if (error) {
return error;
}
+ if (max_rows) {
+ if (json_integer(max_rows) <= 0) {
+ return ovsdb_syntax_error(json, NULL,
+ "maxRows must be at least 1");
+ }
+ n_max_rows = max_rows->u.integer;
+ } else {
+ n_max_rows = UINT_MAX;
+ }
+
if (shash_is_empty(json_object(columns))) {
return ovsdb_syntax_error(json, NULL,
"table must have at least one column");
}
ts = ovsdb_table_schema_create(name,
- comment ? json_string(comment) : NULL,
- mutable ? json_boolean(mutable) : true);
+ mutable ? json_boolean(mutable) : true,
+ MIN(n_max_rows, UINT_MAX),
+ is_root ? json_boolean(is_root) : false);
SHASH_FOR_EACH (node, json_object(columns)) {
struct ovsdb_column *column;
error = ovsdb_column_from_json(node->data, node->name, &column);
}
if (error) {
- ovsdb_table_schema_destroy(ts);
- return error;
+ goto error;
}
add_column(ts, column);
}
+
+ if (indexes) {
+ size_t i;
+
+ ts->indexes = xmalloc(indexes->u.array.n * sizeof *ts->indexes);
+ for (i = 0; i < indexes->u.array.n; i++) {
+ struct ovsdb_column_set *index = &ts->indexes[i];
+ size_t j;
+
+ error = ovsdb_column_set_from_json(indexes->u.array.elems[i],
+ ts, index);
+ if (error) {
+ goto error;
+ }
+ if (index->n_columns == 0) {
+ error = ovsdb_syntax_error(json, NULL, "index must have "
+ "at least one column");
+ goto error;
+ }
+ ts->n_indexes++;
+
+ for (j = 0; j < index->n_columns; j++) {
+ const struct ovsdb_column *column = index->columns[j];
+
+ if (!column->persistent) {
+ error = ovsdb_syntax_error(json, NULL, "ephemeral columns "
+ "(such as %s) may not be "
+ "indexed", column->name);
+ goto error;
+ }
+ }
+ }
+ }
+
*tsp = ts;
- return 0;
+ return NULL;
+
+error:
+ ovsdb_table_schema_destroy(ts);
+ return error;
}
+/* Returns table schema 'ts' serialized into JSON.
+ *
+ * The "isRoot" member is included in the JSON only if its value would differ
+ * from 'default_is_root'. Ordinarily 'default_is_root' should be false,
+ * because ordinarily a table would be not be part of the root set if its
+ * "isRoot" member is omitted. However, garbage collection was not originally
+ * included in OVSDB, so in older schemas that do not include any "isRoot"
+ * members, every table is implicitly part of the root set. To serialize such
+ * a schema in a way that can be read by older OVSDB tools, specify
+ * 'default_is_root' as true. */
struct json *
-ovsdb_table_schema_to_json(const struct ovsdb_table_schema *ts)
+ovsdb_table_schema_to_json(const struct ovsdb_table_schema *ts,
+ bool default_is_root)
{
struct json *json, *columns;
struct shash_node *node;
json = json_object_create();
- if (ts->comment) {
- json_object_put_string(json, "comment", ts->comment);
- }
if (!ts->mutable) {
json_object_put(json, "mutable", json_boolean_create(false));
}
+ if (default_is_root != ts->is_root) {
+ json_object_put(json, "isRoot", json_boolean_create(ts->is_root));
+ }
columns = json_object_create();
}
}
json_object_put(json, "columns", columns);
+ if (ts->max_rows != UINT_MAX) {
+ json_object_put(json, "maxRows", json_integer_create(ts->max_rows));
+ }
+
+ if (ts->n_indexes) {
+ struct json **indexes;
+ size_t i;
+
+ indexes = xmalloc(ts->n_indexes * sizeof *indexes);
+ for (i = 0; i < ts->n_indexes; i++) {
+ indexes[i] = ovsdb_column_set_to_json(&ts->indexes[i]);
+ }
+ json_object_put(json, "indexes",
+ json_array_create(indexes, ts->n_indexes));
+ }
return json;
}
ovsdb_table_create(struct ovsdb_table_schema *ts)
{
struct ovsdb_table *table;
+ size_t i;
table = xmalloc(sizeof *table);
table->schema = ts;
table->txn_table = NULL;
+ table->indexes = xmalloc(ts->n_indexes * sizeof *table->indexes);
+ for (i = 0; i < ts->n_indexes; i++) {
+ hmap_init(&table->indexes[i]);
+ }
hmap_init(&table->rows);
return table;
{
if (table) {
struct ovsdb_row *row, *next;
+ size_t i;
- HMAP_FOR_EACH_SAFE (row, next, struct ovsdb_row, hmap_node,
- &table->rows) {
+ HMAP_FOR_EACH_SAFE (row, next, hmap_node, &table->rows) {
ovsdb_row_destroy(row);
}
hmap_destroy(&table->rows);
+ for (i = 0; i < table->schema->n_indexes; i++) {
+ hmap_destroy(&table->indexes[i]);
+ }
+ free(table->indexes);
+
ovsdb_table_schema_destroy(table->schema);
free(table);
}
{
struct ovsdb_row *row;
- HMAP_FOR_EACH_WITH_HASH (row, struct ovsdb_row, hmap_node, uuid_hash(uuid),
- &table->rows) {
+ HMAP_FOR_EACH_WITH_HASH (row, hmap_node, uuid_hash(uuid), &table->rows) {
if (uuid_equals(ovsdb_row_get_uuid(row), uuid)) {
return row;
}
return NULL;
}
-
-/* This is probably not the function you want. Use ovsdb_txn_row_modify()
- * instead. */
-bool
-ovsdb_table_put_row(struct ovsdb_table *table, struct ovsdb_row *row)
-{
- const struct uuid *uuid = ovsdb_row_get_uuid(row);
- if (!ovsdb_table_get_row(table, uuid)) {
- hmap_insert(&table->rows, &row->hmap_node, uuid_hash(uuid));
- return true;
- } else {
- return false;
- }
-}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff